UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-K

FORM 10-K

(Mark One)

ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the Fiscal Year Ended December 31, 20172021

Or

TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Commission File Number: 001-35798

Commission File Number: 001-35798
HUMANIGEN, INC.
(Exact name of registrant as specified in its charter)

HUMANIGEN, INC.

(Exact name of registrant as specified in its charter)

Delaware

77-0557236

(State or other jurisdiction of

incorporation or organization)

2834
(Primary Standard Industrial
Classification Code Number)

77-0557236

(I.R.S. Employer

Identification No.)

830 Morris Turnpike, 4th Floor

Short Hills, NJ07078

(Address of Principal Executive Offices) (Zip Code)

(973) 200-3100

(Registrant’s Telephone Number, Including Area Code)

Securities registered pursuant to Section 12(b) of the Act:

Title of each class

Trading Symbol(s)

Name of each exchange on which registered

Common Stock

HGEN

The Nasdaq Stock Market LLC

1000 Marina Boulevard, Ste. 250
Brisbane, CA 94005
(Address of Principal Executive Offices) (Zip Code)
(650) 243-3100
(Registrant’s Telephone Number, Including Area Code)
Securities registered pursuant to Section 12(b) of the Act:
None.

Securities registered pursuant to Section 12(g) of the Act:

Common Stock, $0.001 par value.
None

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes ☐ No ☒

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes ☐ No ☒

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☒ No ☐

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes ☒ No ☐

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Annual Report on Form 10-K or any amendment to this Annual Report on Form 10-K. ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company, or an emerging growth company. See definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and “emerging growth company" in Rule 12b-2 of the Exchange Act.

Large accelerated filer

Accelerated filer ☐

Non-accelerated filer (Do
not check if a smaller
reporting company)

Smaller reporting company

Emerging growth company

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report. Yes ☒ No ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act). Yes ☐ No ☒

Indicate by check mark whether the registrant has filed all documents and reports required to be filed by Section 12, 13 or 15(d) of the Securities Exchange Act of 1934 subsequent to the distribution of securities under a plan confirmed by a court. Yes ☒  No ☐

The aggregate market value of the registrant’s voting stock held by non-affiliates as of June 30, 2017,2021, was approximately $11,552,504$710,884,199 based on the closing price of $1.90$17.38 of the Common Stock of the registrant as reported on the OTCQB VentureNasdaq Capital Market operated by OTC Markets Group, Inc. on such date. Shares of common stock held by each executive officer and director and by each other person who may be deemed to be an affiliate of the Registrant have been excluded from this computation. The determination of affiliate status for this purpose is not necessarily a conclusive determination for other purposes. As of March 23, 2018,February 16, 2022, there were 109,207,78665,329,177 shares of the registrant’s Common Stock, par value $0.001 per share, outstanding.

DOCUMENTS INCORPORATED BY REFERENCE

The definitive proxy statement relating to the registrant’s Annual Meeting of Stockholders to be held on June 9, 2022, is incorporated by reference in Part III to the extent described therein.





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TABLE OF CONTENTS

Unless the context indicates otherwise, the terms “Humanigen,” “we,” “us” and “our” refer to Humanigen, Inc.

Form 10-K
Index
Page
Part I 5
Item 1. 5
Item 1A. 24
Item 1B. 51
Item 2. 51
Item 3. 51
Item 4. 53
Part II 54
Item 5. 54
Item 6. 54
Item 7. 55
Item 7A. 69
Item 8. 69
Item 9. 69
Item 9A. 69
Item 9B. 70
Part III71
Item 10. 71
Item 11. 74
Item 12. 78
Item 13. 80
Item 14. 80
Part IV 82
Item 15. 82
Item 16. 82
their respective owners.

SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS

This Annual Report on Form 10-K contains statements that discuss future events or expectations, projections of results of operations or financial condition, trends in our business, business prospects and strategies and other “forward-looking” information. In some cases, you can identify “forward-looking statements” by words like “may,” “will,” “should,” “expects,” “plans,” “anticipates,” “believes,” “estimates,” “predicts,” “intends,” “potential”“potential,” “alignment” or “continue” or the negative of those words and other comparable words. These forward-looking statements are not guarantees of future performance or development and involve known and unknown risks, uncertainties and other factors that are in some cases beyond our control. These forward-looking statements may relate to, among other things, our expectations regardingregarding: our beliefs as to the scope, progress, expansion,potential benefits of lenzilumab as a treatment for hospitalized COVID-19 patients; the timeline for announcement of release of topline results from the ACTIV-5/BET-B study being conducted by the National Institutes of Health; our efforts and costspotential timeline to make future regulatory submissions in respect of researching, developingpotential emergency use authorization or other marketing authorization or approval from applicable regulatory agencies in the United States, United Kingdom, European Union and commercializingother foreign jurisdictions for commercial use of lenzilumab in COVID-19 patients; our other plans to initiate or participate in planned clinical trials and otherwise explore the effectiveness of lenzilumab and our other product candidates;candidates in our development portfolio as therapies for other inflammation and immune-oncology indications our opportunity to benefit from various regulatory incentives; expectations for our financial results, revenue, operating expenses and other financial measures in future periods; and the availability and adequacy of our sources of liquidity to satisfy our working capital needs, capital expenditures, and other liquidity requirements. Actual eventsrequirements and continue as a going concern. Forward-looking statements are subject to a number of risks and uncertainties including, but not limited to, the risks inherent in our lack of profitability and need for additional capital to conduct our business; our dependence on partners to further the development of our product candidates; the uncertainties inherent in the development, attainment of the requisite regulatory authorizations and approvals (including EUA in the United States and CMA in the United Kingdom and European Union) and launch of any new pharmaceutical product; challenges associated with manufacturing and commercializing a biologic such as lenzilumab; and the outcome of pending or results may differ materially duefuture litigation or arbitrations to known and unknown risks, uncertainties and other factors such as:

·our lack of revenues, history of operating losses, bankruptcy, limited cash reserves and ability to obtain additional capital to develop and commercialize our product candidates, including the additional capital which will be necessary to complete the clinical trials that we have initiated or plan to initiate, and continue as a going concern;
·the effect on our stock price and the significant dilution to the share ownership of our existing stockholders that has resulted from conversion of the term loans into equity of the company or that may result in the future upon additional issuances of our equity securities;
·our ability to execute our new strategy and business plan focused on developing our proprietary monoclonal antibody portfolio;
·our ability to list our common stock on a national securities exchange, whether through a new listing or by completing a reverse merger or other strategic transaction;
·the success, progress, timing and costs of our efforts to evaluate or consummate various strategic alternatives if in the best interests of our stockholders;
·the potential timing and outcomes of clinical studies of lenzilumab, ifabotuzumab or any other product candidates and the uncertainties inherent in clinical testing;
·our ability to timely source adequate supply of our development products from third-party manufacturers on which we depend;
·the potential, if any, for future development of any of our present or future products;
·our ability to successfully progress, partner or complete further development of our programs;
·our ability to identify and develop additional products;
·our ability to attain market exclusivity or to protect our intellectual property;
·our ability to reach agreement with a partner to effect a successful commercialization of any of our product candidates;
·the outcome of pending or future litigation;
·the ability of the Black Horse Entities (as defined below) to exert control over all matters of the Company, including their ability to control elections of directors, amendments of our organizational documents, or approval of any merger, sale of assets, or other major corporate transaction;
·competition; and
·changes in the regulatory landscape that may prevent us from pursuing or realizing any of the expected benefits from the various regulatory incentives, or the imposition of regulations that affect our products.
which we are a party. These are only some of the factors that may affect the forward-looking statements contained in this annual report.Annual Report on Form 10-K. For a discussion identifying additional important factors that could cause actual results to vary materially from those anticipated in the forward-looking statements, see “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and “Risk Factors” in this Annual Report on Form 10-K. You should review these risk factors for a more complete understanding of the risks associated with an investment in our securities. However, we operate in a competitive and rapidly changing environment and new risks and uncertainties emerge, are identified or become apparent from time to time. It is not possible for us to predict all risks and uncertainties that could have an impact on the forward-looking statements contained in this annual report.Annual Report on Form 10-K. You should be aware that the forward-looking statements contained in this annual reportAnnual Report on Form 10-K are based on our current views and assumptions. We undertake no obligation to revise or update any forward-looking statements made in this annual reportAnnual Report on Form 10-K to reflect events or circumstances after the date hereof or to reflect new information or the occurrence of unanticipated events, except as required by law. The forward-looking statements

TABLE OF CONTENTS

Humanigen, Inc.

Form 10-K

Index

Page
Summary of Principal Risk Factors
Part I 
Item 1. Business5
Item 1A. Risk Factors28
Item 1B. Unresolved Staff Comments52
Item 2. Properties52
Item 3. Legal Proceedings52
Item 4. Mine Safety Disclosures52
Part II 
Item 5. Market for the Company’s Common Equity, Related Stockholder Matters and Issuer
Purchases of Equity Securities
53
Item 6. Reserved53
Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations53
Item 7A. Quantitative and Qualitative Disclosures About Market Risk63
Item 8. Financial Statements and Supplementary Data63
Item 9. Changes in and Disagreements with Accountants on Accounting and Financial Disclosure63
Item 9A. Controls and Procedures63
Item 9B. Other Information64

Item 9C. 

Disclosure Regarding Foreign Jurisdictions that Prevent Inspections64
Part III
Item 10. Directors, Executive Officers and Corporate Governance65
Item 11. Executive Compensation65
Item 12. Security Ownership of Certain Beneficial Owners and Management and Related
Stockholder Matters
65
Item 13. Certain Relationships and Related Transactions, and Director Independence65
Item 14. Principal Accountant Fees and Services65
Part IV 
Item 15. Exhibits and Financial Statement Schedules66
Item 16.Form 10-K Summary69
Signatures69

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SUMMARY OF PRINCIPAL RISK FACTORS

This summary briefly states the principal risks and uncertainties facing our business that could affect our common stock, which are only a select portion of those risks. A more complete statement of those risks and uncertainties is set forth in “Part I, Item 1A - Risk Factors” of this annual report are intended to be subject to protection affordedreport. This summary is qualified in its entirety by that more complete statement. You should carefully read the safe harbor for forward-looking statements containedentire statement and “Risk Factors” when considering the risks and uncertainties as part of your evaluation of an investment in the Private Securities Litigation Reform Act of 1995.our common stock.

·The U.S. Food and Drug Administration (“FDA”) declined our initial request for Emergency Use Authorization (“EUA”) for lenzilumab as a therapy for hospitalized patients with COVID-19. The Medicines and Healthcare Products Regulatory Agency (“MHRA”) also has not approved our application for marketing authorization of lenzilumab in this indication. We are continuing to pursue an authorization or approval for lenzilumab’s use in hospitalized patients with COVID-19 in the United States (“U.S.”), United Kingdom (“UK”) and European Union (“EU”) but may not obtain one.
·Results from the ACTIV-5/BET-B (as defined below) trial will be critically important for the future viability of our development program of lenzilumab as a therapy for hospitalized patients with COVID-19. If the results from such trial are not confirmatory of the findings of the C-reactive protein level (“CRP”) subgroup from the LIVE-AIR study (as defined below), we would either conduct a new clinical trial of our own or abandon this development program altogether. Even if the results of such trial are favorable and are included in an amendment to our initial EUA application, there can be no assurance that FDA will agree with our efficacy claim or that we will obtain EUA.
·We need to obtain additional financing to fund our operations and, if we are unable to obtain such financing, we may be unable to continue as a going concern. We expect the results of the ACTIV-5/BET-B (as defined below) trial to be important to investors in evaluating future financings we may undertake. If the results from such trial are not confirmatory of the findings of the CRP subgroup from the LIVE-AIR study (as defined below), our ability to obtain financing may be further impaired.
·Our commercial opportunity in COVID-19 or other indications may be reduced or eliminated if competing products for the same segment of patients that lenzilumab targets are authorized or approved.
·Manufacturing efforts in respect of lenzilumab have been extremely costly and inefficient in producing treatments for use in our clinical development program or potential sale. We are subject to a multitude of manufacturing risks and rely completely on third parties to manufacture drug product and supply drug substance. We may not be able to obtain materials or supplies necessary to conduct clinical trials or, following requisite regulatory authorizations or approvals, to manufacture and sell our products.
·Interim, top-line or preliminary data from our clinical trials that we announce may change as more patient data become available and are subject to audit and verification procedures that could result in material changes in the final data. Disclosure of such data by us, including data from the ACTIV-5/BET-B (as defined below) trial, or by our competitors could result in volatility in the price of shares of our common stock and dramatic spikes in trading volume.
·If an authorization or approval is granted for lenzilumab, we may be unable to accurately predict demand for lenzilumab or to produce sufficient quantities on a timely basis to meet demand.
·There can be no assurance that lenzilumab, even if approved or authorized, would ever become profitable, due to government or healthcare provider or payer interest and public perception regarding vaccines and treatments for COVID-19 related complications.
·We currently have no internal sales and marketing capabilities and will rely on third parties to market and sell lenzilumab if we attain authorization or approval for its commercialization, and any product candidates we may successfully develop. We or they may not be able to effectively market and sell any such product candidates.
·We have a history of operating losses and we may never become profitable.
·The adoption of chimeric antigen receptor T-cell (“CAR-T”) therapies as the potential standard of care for treatment of certain cancers is uncertain, and dependent on the efforts of a limited number of market entrants, and if not adopted as anticipated, the market for lenzilumab or next-generation gene-edited CAR-T therapies may be limited or not develop. 
·Our business could target benefits from various regulatory incentives, such as orphan drug exclusivity, breakthrough therapy designation, fast track designation, and priority review, but we may not ultimately qualify for or benefit from these incentives.
·There is a limited amount of information about us upon which investors can evaluate our product candidates and business.
·If our current and any future collaborators cease development efforts under our collaboration agreements, or if any of those agreements are terminated, these collaborations may fail to lead to commercial products, and we may never receive milestone payments or future royalties under these agreements.
·We may experience delays in commencing or conducting our planned or contemplated clinical trials, which may render us unable to complete the development and commercialization of our product candidates.

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·Our product candidates are subject to extensive regulation, compliance with which is costly and time consuming, may cause unanticipated delays, and may prevent the receipt of the required approvals to commercialize our product candidates.
·If we fail to attract and retain key management and clinical development personnel, or if the attention of such personnel is diverted, we may be unable to successfully manage our business.
·We may encounter difficulties in managing our growth and expanding our operations successfully, including internationally if lenzilumab is authorized or approved in any foreign country or market.
·Currently pending, threatened or future litigation, arbitration, governmental proceedings or inquiries could result in material adverse consequences, including judgments or settlements.
·We may not be able to obtain, maintain, enforce or protect our intellectual property rights in the U.S. and throughout the world.
·Our insurance policies are expensive and protect us only from some business risks, which leaves us exposed to significant uninsured liabilities.
·Our executive officers, directors and principal stockholders, if they choose to act together, will continue to have the ability to significantly influence all matters submitted to stockholders for approval.
·Raising additional funds by issuing equity securities will cause dilution to our existing stockholders.

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PART I

ITEM 1.  BUSINESS

Overview


We are a clinical stage biopharmaceutical company, pursuing cutting-edge sciencedeveloping our portfolio of proprietary Humaneered® anti-inflammatory immunology and immuno-oncology monoclonal antibodies. Our proprietary, patented Humaneered technology platform is a method for converting existing antibodies (typically murine) into engineered, high-affinity human antibodies designed for therapeutic use, particularly with acute and chronic conditions. We have developed or in-licensed targets or research antibodies, typically from academic institutions, and then applied our Humaneered technology to develop our proprietary monoclonal antibodies for immunotherapy and oncology treatments.optimize them. Our lead product candidate, lenzilumab, and our other two product candidates, ifabotuzumab (“iFab”) and HGEN005, are Humaneered monoclonal antibodies. Our Humaneered antibodies are closer to human antibodies than chimeric or conventionally humanized antibodies and have a high affinity for their target. In addition, we believe our Humaneered antibodies offer further important advantages, such as high potency, a slow off-rate and a lower likelihood to induce an inappropriate immune response or infusion related reaction.

We are focusing our efforts on the development of our lead product candidate, lenzilumab. Lenzilumab is lenzilumab (formerly known as KB003).  We have begun work with leading key opinion leadersa monoclonal antibody that has been demonstrated to neutralize human granulocyte-macrophage colony-stimulating factor (“GM-CSF”), a cytokine that we believe is of critical importance in the hyperinflammatory cascade, sometimes referred to as cytokine release syndrome (“CRS”) or cytokine storm, associated with COVID-19, chimeric antigen receptor T-cell (“CAR-T”) therapy and acute Graft versus Host Disease (“aGvHD”) associated with bone marrow transplants.

Our Pipeline

Our product candidates are in the clinical stage of development and require substantial time, resources, research and development, and regulatory approval prior to commercialization. Our current pipeline is depicted below:

 

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Lenzilumab

We are developing lenzilumab for potential commercial use in several indications:

as a therapeutic for patients newly hospitalized with COVID-19;
as a prophylactic companion for certain chimeric antigen receptor therapy (“CAR-T”) programs;
for the prevention and/or treatment of acute graft versus host disease (“aGvHD”) associated with bone marrow transfers; and
as a therapeutic for chronic myelomonocytic leukemia (“CMML”).

Our development programs in COVID-19, CAR-T and aGvHD are complementary in that all are focused on preventing or reducing cytokine storm in those disease states. It is possible that results observed from the Phase 3 trials in COVID-19 described below may be predictive of results in these other settings, which are also characterized by cytokine storm.

Lenzilumab in COVID-19

Scientific Rationale

Following the emergence of the SARS-CoV-2 virus that leads to the condition referred to as COVID-19, scientific literature suggested that GM-CSF is critical for the initiation of the hyperinflammatory cascade experienced by many hospitalized patients characterized in the later and sometimes fatal stages by lung dysfunction and, in many patients, multi-organ impairment. Multiple publications have pointed to GM-CSF as being a signature cytokine in this process, with elevated GM-CSF levels correlated to poorer outcomes, including ventilator use, Intensive Care Unit (“ICU”) admission, and mortality.

The severe clinical features associated with some COVID-19 infections result from an inflammation-induced lung injury which may require supplemental oxygen through a nasal cannula, non-invasive or invasive mechanical ventilation or Extra Corporeal Mechanical Oxygenation (“ECMO”) and sometimes ICU care. This lung injury is a result of a hyperinflammatory dysregulation of the immune system and associated with cytokine storm. The lung injury that leads to death is not directly related to the virus but appears to be a result of a hyper-reactive immune response to the virus triggering a cytokine storm that can continue even after viral titers remain stable or even begin to fall. 

CRS is characterized by an elevation of inflammatory cytokines resulting in fever, hypotension, capillary leak syndrome, pulmonary edema, disseminated intravascular coagulation, respiratory failure, and Acute Respiratory Distress Syndrome (“ARDS”). The development of CRS as a direct result of immune hyper-stimulation has been previously described in patients with autoimmune and lymphoproliferative diseases, as well as in patients with B-cell malignancies receiving CAR-T therapy. Over the last several years, preclinical studies and correlative science from clinical trials in CAR-T therapy fieldhave shed light on the pathophysiology, development, characterization, and management of CRS.

CRS is also characterized by activation of myeloid cells and release of inflammatory cytokines, including GM-CSF, monocyte chemoattractant protein-1 (MCP-1), macrophage inflammatory protein 1α (MIP-1α), interferon gamma-induced protein 10 (IP-10), interleukin-6 (IL-6), and interleukin-1 (IL-1). The cascade, once initiated, can quickly evolve into a cytokine storm, resulting in further activation, expansion and trafficking of myeloid cells, leading to advanceabnormal endothelial activation, increased vascular permeability, and disseminated intravascular coagulation.

Data from National Scientific Review (2020, Vol. 7, No. 6) titled “Pathogenic T-cells and inflammatory monocytes incite inflammatory storms in severe COVID-19 patients”, supports the hypothesis that GM-CSF induced cytokine storm immune mechanisms have contributed to patient mortality with the current pandemic strain. We believe that there is increasing acceptance that this pathophysiology may be responsible for worsening of clinical status and poor outcomes. The authors noted that steroid treatment in such cases has been disappointing in terms of outcome but suggested that a monoclonal antibody that targets GM-CSF may prevent or curb the hyper-active immune response caused by COVID-19 in this setting. Several publications point to GM-CSF as a so-called ‘signature cytokine’ including the largest inflammatory marker study in over 600 patients from a multicenter study in the UK. (Uncontrolled Innate and Impaired Adaptive Immune Responses in Patients with COVID-19 ARDS, deProst et al, AJRCCM Articles in Press., American Thoracic Society, August 31, 2020, 10.1164/rccm.202005-1885OC) (The dysregulated innate immune response in severe COVID-19 pneumonia that could drive poorer outcome, Blot et al. J Transl Med (2020) 18:457) (Elevated antiviral, myeloid and endothelial inflammatory markers in severe COVID-19, Openshaw et al, MedRxIV, doi). In March 2021, Thwaites RS et al and several, ISARIC4C (Coronavirus Clinical Characterisation Consortium)investigators published “Inflammatory profiles across the spectrum of disease reveal a distinct role for GM-CSF in severe COVID-19”, in Science Immunology, further confirming elevated GM-CSF levels are correlated with COVID-19 mortality (doi: 10.1126/sciimmunol.abg9873. PMID: 33692097; PMCID: PMC8128298).

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Our Development Program

In response to the scientific literature, we designed and conducted a Phase 3 clinical trial of lenzilumab into phase 1b/in newly hospitalized COVID-19 patients, which we refer to as the “LIVE-AIR” study, to examine whether lenzilumab’s neutralization of human GM-CSF could prevent or reduce poor outcomes associated with COVID-19.

The LIVE-AIR study enrolled 520 patients in 35 sites in the U.S. and Brazil who were at least 18 years of age; experienced blood oxygen saturation (“SpO2 trials”) of less than or equal to 94%; or required low-flow supplemental oxygen, or high-flow oxygen support, or non-invasive positive pressure ventilation; and were hospitalized but did not require invasive mechanical ventilation (“IMV”). Following enrollment, subjects were randomized to receive three infusions of either lenzilumab or placebo, with each infusion separated by eight hours over a 24-hour period. The primary objective was to assess whether lenzilumab, in addition to standard of care, which included dexamethasone (or other steroids) and/or remdesivir, could prevent or alleviate the immune-mediated cytokine storm and improve survival without ventilation (“SWOV”) (sometimes referred to as “ventilator-free survival”). SWOV is a composite endpoint of time to death and time to IMV and SWOV is an important composite clinical endpoint that measures mortality, mechanical ventilation.

The LIVE-AIR Phase 3 randomized, double-blind, placebo-controlled trial investigated the efficacy and safety of lenzilumab to assess the potential for lenzilumab to improve the likelihood of SWOV, beyond standard supportive care, in hospitalized subjects with severe COVID-19. Subjects with COVID-19 (n=520), >18 years, and ≤94% oxygen saturation on room air and/or requiring supplemental oxygen, but not invasive mechanical ventilation, were randomized to receive lenzilumab (600 mg, n=261) or placebo (n=259) via three intravenous infusions administered 8 hours apart. Subjects were followed through Day 28 following treatment.

In March 2021, we announced results from our LIVE-AIR study. Baseline demographics were comparable between the two modified intention-to-treat (“mITT”) populations: male, 65%; mean age, 61 years; mean BMI, 33 kg/m2; median CRP, 79 mg/L; CRP was <150 mg/L in 77.9% of subjects. The most common comorbidities were hypertension (66%), obesity (55%), diabetes (53%), chronic kidney disease (14%), and coronary artery disease (14%). Subjects received steroids (94%), remdesivir (72%), or both (69%). Lenzilumab improved the likelihood of SWOV by 54% in the mITT population (HR: 1.54; 95%CI: 1.02-2.32, p=0.040) compared to placebo. SWOV also relatively improved by 82% in subjects who received both corticosteroids and remdesivir (1.82; 1.16-2.86, nominal p=0.0092); by 3.04-fold in subjects with CRP<150 mg/L and age <85 years (3.04; 1.68–5.51, nominal p=0.0003). Survival was improved by 2.22-fold in subjects with CRP<150 mg/L and age <85 years (2.22; 1.07-4.67, nominal p=0.034).

Lenzilumab improved SWOV in hospitalized, hypoxic subjects with COVID-19 pneumonia over and above treatment with remdesivir and/or corticosteroids. Subjects with C-reactive protein level (“CRP”)<150 mg/L and age <85 years demonstrated an improvement in survival and had the greatest benefit from lenzilumab.

Following completion of the LIVE-AIR study, we commenced a series of efforts to attain authorization to commercialize lenzilumab for use in hospitalized COVID-19 patients in the United States and other territories. We filed an application for Emergency Use Authorization (“EUA”) with U.S. Food and Drug Administration (“FDA”) at the end of May 2021. We also submitted an application for marketing authorization of lenzilumab in hospitalized COVID-19 patients to Medicines and Healthcare products Regulatory Agency (“MHRA”) of the United Kingdom and conducted a series of exploratory discussions with representatives of European Medicines Agency (“EMA”) regarding our potential submission of lenzilumab for marketing authorization in the European Union. In addition, we commenced significant manufacturing efforts in support of potential commercialization, as described below under “—Manufacturing and Raw Materials.”

On September 8, 2021, FDA declined our EUA request, stating in its letter that it was unable to conclude that the known and potential benefits of lenzilumab outweigh the known and potential risks of its use as a treatment for COVID-19. In addition to raising similar concerns around efficacy, MHRA requested further information related to clinical, manufacturing and quality processes.

The results from the LIVE-AIR study were published in the peer-reviewed journal, The Lancet Respiratory Medicine (“The Lancet”), on December 1, 2021. Per the Lancet paper, the implication from all the available evidence is that “Lenzilumab significantly improved survival without invasive mechanical ventilation in hospitalized patients with COVID-19 who were treated concurrently with other available therapies”. The Lancet paper concluded that “LIVE-AIR showed that lenzilumab treatment of hospitalized patients with COVID-19 can improve the likelihood of survival without the need for mechanical ventilation, with a safety profile similar to that of placebo”. As a result, we continue to believe in the potential therapeutic benefits of lenzilumab and remain committed to our efforts to develop lenzilumab for patients hospitalized with COVID-19.

The next anticipated step in our development program for lenzilumab in COVID-19 is the release of results from the Accelerating COVID-19 Therapeutic Interventions and Vaccines-5 (“ACTIV-5”) and Big Effect Trial, in the “B” arm of the trial (“BET-B”), referred to as the ACTIV-5/BET-B trial, which is sponsored and funded by the National Institutes of Health (“NIH”). This study is evaluating lenzilumab in combination with remdesivir, compared to placebo and remdesivir, in hospitalized COVID-19 patients as described more fully below. We provided lenzilumab for the study.

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A retrospective analysis of the LIVE-AIR study suggested that patients under the age of 85 and with a baseline CRP below 150 mg/L (the “CRP subgroup”) appeared to derive the greatest benefit from lenzilumab, therefore, the ACTIV-5/BET-B study protocol was modified to include baseline CRP below 150 mg/L as the primary analysis population. The ACTIV-5/BET-B study has reached its target enrollment with over 400 patients enrolled that met this criterion. Topline results from ACTIV-5/BET-B are expected to be released late in the first quarter or early in the second quarter of 2022. If confirmatory of the results of the findings of the CRP subgroup from the LIVE-AIR study, we plan to include the results from ACTIV-5/BET-B in an amendment to our EUA submission, and to include these results in a responsive submission to MHRA along with certain performance process qualification (“PPQ”) data around drug product batches, in the second quarter of 2022. In addition, as a result of feedback received from representatives of EMA, if the ACTIV-5/BET-B data are confirmatory of the results of the findings of the CRP subgroup from the LIVE-AIR study, we intend to submit a Conditional Marketing Authorization (“CMA”) for lenzilumab with an Accelerated Approval request to EMA later in 2022.

Through partners in Australia, we have also initiated a study of lenzilumab in cancer patients with COVID-19. The trial, known as C-SMART (“COVID-19 Prevention and Treatment in Cancer; a Sequential Multiple Assignment Randomized Trial”), is a multi-center, four arm trial, which aims to evaluate several different immune modulating drugs for prevention and treatment of neurotoxicityCOVID-19 in the cancer population. C-SMART will include 2,282 cancer patients at risk of, or known positive for, COVID-19 infection. The study contemplates prophylaxis of 957 patients with IFN-alpha, 957 patients on placebo; post-exposure prophylaxis of 85 patients with IFN-alpha, 85 patients on placebo; 63 COVID-19 hospitalized patients on selinexor, 85 patients on placebo; 36 COVID-19 hospitalized pneumonia on lenzilumab and 36 patients on placebo. The C-SMART study is led by the National Centre for Infections in Cancer at the Peter MacCallum Cancer Centre and will be conducted at five Australian sites in Melbourne and Sydney. The study is supported by a grant from the Australian Government's Medical Research Future Fund.

In addition, our partners in South Korea are conducting a Phase 1 bridging study in 20 healthy volunteers. This Phase 1 clinical study is being conducted to explore the safety, tolerability, and pharmacokinetic (“PK”) properties of lenzilumab and compare it between Koreans and Caucasians.

Our Commercial Opportunity

If an EUA in the U.S. or equivalent marketing authorization in the EU or UK were granted, we intend to commercialize lenzilumab for COVID-19. Our goal would be to position lenzilumab as a front-line therapeutic for use in hypoxic COVID-19 patients.

Lenzilumab is intended to be used in patients hospitalized for COVID-19 with oxygen saturation levels below 94%. Since the beginning of the pandemic through January 31, 2022 over 4.3 million patients have been hospitalized and the current number of hospitalized patients is estimated by the CDC to be over 120,000. As of the end of January 2022, the vaccination rate in the United States is over 80%; however, given the emergence of new variants, waning protection from vaccinations and boosters, lack of efficacy from neutralizing monoclonals primarily due to emerging variants and potential limited efficacy of some oral anti-virals, and the 20% of people that remain unvaccinated, we believe patients infected with COVID-19 will continue to be admitted to the hospital for treatment, particularly immunocompromised populations. Scientists and experts have stated beliefs that the COVID-19 pandemic will become endemic. Hospitalization rates due to influenza over the past decade have ranged from 140,000 to 800,000 per year. We believe the commercial opportunity to treat COVID-19 hospitalized patients with lenzilumab will continue to exceed 100,000 patients in the U.S. on an annual basis in the future.

Lenzilumab in CAR-T

Scientific Rationale

FDA-approved CAR-T therapies have demonstrated the effectiveness of using targeted immuno-cellular engineering to cause a patient’s own T-cells to fight certain cancers that have not responded to standard therapies. T-cells are often called the “workhorses” of the immune system because of their role in coordinating the immune response and killing cells infected by pathogens and cancer cells. As depicted below, each of the FDA-approved CAR-T therapies are currently a one-time treatment that involves multiple steps:

Harvesting white blood cells from the patient’s blood, also known as apheresis; 
Engineering T-cells within this population to express cancer-specific receptors; 
Increasing and purifying the number of genetically re-engineered T-cells; and
Infusing the functional cancer-specific T-cells back into the patient to allow for expansion and targeting the cancer cells. 

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As of the date of this filing, five CAR-T therapies have been approved by FDA: Gilead/Kite’s Yescarta, and Tecartus, Novartis’s Kymriah, Bristol Myers Squibb’s Breyanzi  and Abecma, which seek to treat forms of B-cell cancers such as various types of NHL, including DLBCL, Follicular Lymphoma (“FL”) Mantle Cell Lymphoma (“MCL”) and adult acute lymphoblastic leukemia (“ALL”) that are refractory or in second or later stage relapse. Although patients suffering from these aggressive cancers frequently undergo multiple treatments, including chemotherapy, radiation and targeted therapy including stem cell transplants, the five-year survival rate has been severely limited and patients who do not respond to, or have relapsed following at least two courses of standard treatment, have no other treatment options and a very poor outcome. According to U.S. governmental sources, including the Surveillance, Epidemiology, and End Results (“SEER”) program of the National Cancer Institute, which is a source of epidemiologic information on the incidence and survival rates of cancer in the U.S., based on incidence data, we estimate that there are 21,000 patients per year in the U.S. with B-cell DLBCL and FL (Yescarta) and 7,000 with MCL and ALL (Tecartus). The number of patients eligible for Yescarta and Tecartus will be lower than the incidence rate as only patients who have failed at least two prior systemic therapies are currently eligible for CAR-T therapy. In addition, both Yescarta and Breyanzi have reported positive data in second line therapy for (r/r) B-cell NHL. If CAR-T therapy is approved as a second line option versus stem cell transplantation, additional patients may be eligible for treatment. Moreover, there are multiple B-cell maturation antigen (“BCMA”) targeted CAR-T therapies in Phase 2 development for relapsed or refractory multiple myeloma and several other novel CAR-T therapies targeting various antigens and neo-antigens in development for a number of hematologic and solid cancers.

The five FDA-approved CAR-T therapies have significant limitations. Despite the exciting prospects for treating patients with limited options, significant and potentially cytokine release syndrome, or CRS,life-threatening side-effects are associated with CAR-T therapy.  therapy, including Immune Effector Cell Associated Neurotoxicity (“ICANS”) and CRS. While there may be individual differences between CAR-T therapy products, the overall toxicity profile is generally consistent with that reported for Yescarta and Tescartus, and it is known that various development-stage BCMA and other CAR-T therapies are hampered by the emergence of cytokine storm, ICANS and other serious and potentially fatal side-effects.

Both CRS and ICANS are caused by a large-scale release of pro-inflammatory cytokines and chemokines induced by the CAR-T therapy and remain significant unmet needs that must be addressed. Because ICANS and CRS can be life-threatening and have proven fatal in many instances, and because each product bears a “Boxed Warning” from FDA (the strictest FDA warning label intended to alert patients and providers about serious and life-threatening risks associated with a particular drug), patients seeking to benefit from Yescarta and Tescartus, generally may only do so if the treatment center is in compliance with the Risk Evaluation and Mitigation Strategy (“REMS”) program required by FDA.

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REMS is a drug safety program that FDA requires certain medications with serious safety concerns to adhere to strict on-going monitoring and reporting and is intended to assist and train certified treatment centers on the management of these serious side-effects. For example, each hospital and its associated clinics are required to have a minimum of two doses of tocilizumab available on-site for each patient for the potential treatment of moderate to severe cases of CRS. We believe the REMS requirement may have adversely impacted both market uptake and usage to date.

According to the original package inserts for Yescarta and Tecartus, 81% (NHL), 81% (MCL), 87% (ALL) of patients treated in the clinical trial setting experienced ICANS (with up to 35% of cases being severe, or grade >3). The package insert for Yescarta was recently updated to include the use of prophylactic corticosteroids across all approved indications. The update was based on the safety update from Cohort 6 of the ZUMA-1 study which showed that in 39 patients, prophylactic or early use of corticosteroids resulted in neurological events (Grade ≥3) in 13% or patients and 0% of the patients had CRS. These original rates may be more prevalent in practice, despite the availability and utilization of tocilizumab and corticosteroids. Moreover, based on feedback from leading treatment centers in the U.S., approximately 30% to 60% of patients receiving CAR-T therapy require admission to the ICU and in some cases require an extended stay, with multiple interventions, including ventilator support and other supportive measures, to be urgently administered to manage these side-effects. Some patients can suffer seizures, coma, brain swelling, heart arrhythmias, organ failure and serious and life-threatening clotting disorders, not only causing more complex and potentially fatal medical consequences, but significantly adding to cost of patient care. These can be particularly challenging and concerning issues, especially in younger and pediatric patients.

Our Development Program

There are currently no FDA-approved products for the prevention or treatment of neurotoxicity or prevention of CRS associated with CAR-T therapy.  Additionally, lenzilumab is currently in a phase 1 trialtherapy-related side effects, nor are there any approved therapies for the treatment of chronic myelomonocytic leukemia, or CMML, and potentially subsequent trialsCAR-T therapy related ICANS. Tocilizumab, among other indications, is approved for the treatment of juvenile myelomonocytic leukemia,CAR-T induced severe CRS. We believe lenzilumab has the potential to improve the efficacy and safety of CAR-T therapy and that the use of lenzilumab may minimize or JMML, botheradicate the incidence, frequency, duration and/or severity of whichICANS and/or CRS that frequently appear in CAR-T patients.

Accordingly, we are rare hematologic cancers with high unmet medical need. We are exploring partnering opportunities to enable development of ifabotuzumab (another of our proprietary monoclonal antibodies, formerly known as KB004),developing lenzilumab as a potential CAR constructtreatment for cytokine storm associated with ICANS and for the potential treatment ofCRS in certain rare solidCD19-targeted CAR-T cell therapies. Further, GM-CSF neutralization may enhance CAR-T proliferation and hematologic cancers and other serious diseases.  With a focus on preventing seriouseffector functions and potentially life-threatening side-effects associatedconfer additional benefits in terms of durable efficacy and healthcare resource utilization. Preclinical data generated in collaboration with the Mayo Clinic, which was published in Blood, a premier journal in hematology, indicates that the use of lenzilumab in combination with CAR-T therapy may also enhance the proliferation and improve the efficacy of CAR-T therapy. This may also result in durable, or longer term, responses in CAR-T therapies.

Lenzilumab has been studied in a multi-center Phase 1b trial as a sequenced therapy with Yescarta to prevent CRS and ICANS in patients with relapsed or refractory diffuse large B-cell lymphoma (“DLBCL”) (NCT04314843), for which we announced positive results in April 2021. We intend to initiate a randomized, placebo-controlled, double-blind, registrational, Phase 3 study to evaluate the efficacy and safety of lenzilumab combined with Yescarta and Tecartus CAR-T therapies in non-Hodgkin lymphoma in 2022. This study is known as SHIELD (Study on How to Improve Efficacy and toxicity with Lenzilumab in DLBCL and other high-unmet-need conditionsNHL patients treated with CAR-T therapy). We have alignment with FDA on the design of the Phase 3 study. Following a dose run-in period in approximately 25 patients, we currently plan to enroll more than 150 patients in the study. SHIELD will study lenzilumab for which there are no FDA-approvedthe prevention of CAR-T therapy-related toxicities including ICANS and CRS.

Our Commercial Opportunity

Revenues from the sales of the five approved CAR-T therapies we alsoexceeded $1.7 billion in 2021. We estimate that over 3,000 patients were treated with CAR-T therapy in 2021. Analysts predict that Yescarta only will reach peak sales in excess of $1.5 billion as additional patients become eligible for treatment. We believe we have the opportunityability to benefit from various regulatory incentives, such as orphan drug exclusivity, breakthrough therapy designation, fast track designation and accelerated approval.


We were incorporated on March 15, 2000 in California and reincorporated as a Delaware corporation in September 2001 under the name KaloBios Pharmaceuticals, Inc. We completed our initial public offering in January 2013. Effective August 7, 2017, we changed our legal name to Humanigen, Inc.

We have undergone a significant transformation since December 2015. As a result of challenges facing us at the time, on December 29, 2015, we filed a voluntary petition for bankruptcy protection under Chapter 11 of Title 11 of the U.S. Bankruptcy Code. On June 30, 2016, our Second Amended Plan of Reorganization, dated May 9, 2016, as amended (the “Plan”), became effective and we emerged from our Chapter 11 bankruptcy proceedings. For further information on our bankruptcy and emergence from bankruptcy, see “Bankruptcy.”

From the time of our emergence from bankruptcy to August 29, 2017, our lead product candidate was benznidazole for the treatment of Chagas disease, a parasitic illness that can lead to serious and potentially life-threatening long-term heart, intestinal and neurological problems. On June 30, 2016, we acquired certain worldwide rights to benznidazole from Savant Neglected Diseases, LLC, or Savant, and until August 29, 2017, we were primarily focused on the development necessary to seek and obtain approval by the United States Food and Drug Administration, or FDA, for benznidazole and the subsequent commercialization, if approved.  According to FDA-issued guidance, benznidazole is eligible for review pursuant to a 505(b)(2) regulatory pathway as a potential treatment for Chagas disease and, if it became the first FDA-approved treatment for Chagas disease, we would have been eligible to receive a Priority Review Voucher, or PRV.

However, on August 29, 2017, the FDA announced it had granted accelerated and conditional approval of a benznidazole therapy manufactured by Chemo Research, S.L., or Chemo, for the treatment of Chagas disease and had awarded that manufacturer a neglected tropical disease PRV. Chemo’s benznidazole also received Orphan Drug designation. As a result of FDA’s actions and because we no longer expected to be eligible to receive a PRV with our own benznidazole candidate for the treatment of Chagas disease, we immediately ceased development for benznidazole and began assessing a full range of options with respect to our benznidazole assets and development program. We also began an accelerated scientific assessment of emerging new possibilities for our monoclonal antibody assets and development programs, including potential prophylaxis of CAR-T-related toxicities as the first CAR-T products began receiving approval for marketing in the US.

On December 21, 2017, we reached an agreement with our Term Loan Lenders (as defined below) on a series of transactions, including the transfer and assignment of all of our assets related to benznidazole to an affiliate of one of the Term Loan Lenders, providing for, among other things, the satisfaction and extinguishment of our outstanding obligations under our Term Loan Credit Agreement (as defined below). We refer to these transactions herein as the “Restructuring Transactions.” On February 27, 2018, we completed the Restructuring Transactions. For further information regarding the Restructuring Transactions, see “The Restructuring Transactions.”

Since the FDA’s August 29, 2017 announcement relating to benznidazole, we have shifted our primary focus toward developing our proprietary monoclonal antibody portfolio, which comprises lenzilumab and ifabotuzumab, for use in addressing serious and potentially life-threatening unmet needs in oncology. Both of these product candidates are in the early stage of development and will require substantial time, expenses, clinical development, testing, and regulatory approval prior to commercialization. Furthermore, neither of these product candidates has advanced into a pivotal registration study and it may be years before such a study is initiated, if at all.

Lenzilumab is a recombinant monoclonal antibody, or mAb, that neutralizes soluble granulocyte-macrophage colony-stimulating factor, or GM-CSF, a critical cytokine in the inflammatory cascade associated with CAR-T-related side effects and in the growth of certain hematologic malignancies, solid tumors and other serious conditions. We expect to study lenzilumab’s potential in reducing adverse events associated with CAR-T therapy. We have begun to explore lenzilumab’s effectiveness in preventing or ameliorating neurotoxicity associated withtransform CAR-T therapy and potentially a broad range of other T-cell engaging therapies, including both autologous and allogeneic cell transplantation. There is a direct correlation between the efficacy of CAR-T therapy and the incidence of life-threatening toxicities, including ICANS and CRS.

We believe that our GM-CSF pathway science, assets and expertise create two technology platforms to assist in the development of next-generation CAR-T therapies:

Lenzilumab has the potential to be used in combination with any FDA-approved or development stage T-cell therapy, including CAR-T therapy, as well as in combination with other cell therapies such as allogeneic HSCT such as bone marrow transplants, to make these treatments safer and more effective.
In addition, our GM-CSF knockout gene-editing CAR-T platform has the potential to create next-generation CAR-T therapies that may inherently avoid any efficacy/toxicity linkage, thereby potentially preserving the benefits of the CAR-T therapy while reducing or altogether avoiding its serious and potentially life-threatening side-effects.

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Lenzilumab in Acute GvHD

Scientific Rationale

Allogeneic hematopoietic stem cell therapy (“HSCT”), a potentially curative therapy for patients with hematological cancers, involves transferring stem cells from a healthy donor to the patient. HSCT has demonstrated effectiveness in treating these cancers. As depicted below, allogeneic HSCT involves multiple steps:

Collecting blood from a healthy donor; 
Processing the donor’s blood to remove the stem cells before returning the rest of the donor’s blood back to the donor; 
Pre-conditioning the patient with high-dose chemotherapy and/or radiation; and 
Infusing the donor’s stem cells into the patient to allow for the production of new blood cells.

 

Although a potentially life-saving treatment for patients suffering from hematological cancers, between 40-60% of patients receiving HSCT treatments experience acute or chronic aGvHD, which together carries a 50% mortality rate. After being transplanted into the patient, donor-derived T cells are responsible for mediating the beneficial graft versus leukemia (“GvL”) effect. In addition, we continue dosingmany cases, however, donor-derived T cells that remain within the graft itself have also been linked to destruction of healthy tissue in the patient (the host), with particular risk of destroying cells in the patient’s skin, gut, and liver, resulting in aGvHD. Although depleting donor grafts of T cells can prevent or reduce the risk of aGvHD, this results in a Phase 1 clinical trialreduced GvL effect, thereby having a detrimental impact on the efficacy of the allogeneic HSCT treatment itself and leading to increased relapse rates.

Despite new therapies, there remains a significant unmet medical need for an agent that can uncouple the beneficial GvL effect from harmful aGvHD. The FDA has recently approved Orencia (abatacept) from Bristol Myers Squibb for the prevention of aGvHD and in 2019 Jakafi (ruxolitinib) from Incyte Corporation was approved for steroid-refractory aGvHD. Other treatments include pre-conditioning regimens for HSCT treatments that can vary significantly by treatment centers, including by unapproved, or “off-label,” use of agents that have been approved by FDA for other uses only.

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We believe that cytokine storm may be responsible, at least in part, for the emergence of GvHD in this setting. We believe that GM-CSF neutralization with lenzilumab has the potential to prevent or treat GvHD without compromising, and potentially improving, the beneficial GvL effect in patients undergoing allogeneic HSCT, thereby making allogeneic HSCT safer. The technology was featured in a November 2018 research article published in Science Translational Medicine, where the authors demonstrated in a murine model of GvHD, that donor T cell-derived GM-CSF drives GvHD through activation, expansion, and trafficking of myeloid cells but has no effect on the GvL response. Neutralization of GM-CSF (either using a neutralizing antibody or through GM-CSF gene knock-out) was able to uncouple the myeloid-mediated immunopathology resulting in GvHD from the T cell-mediated control of leukemic cells. This discovery provides a mechanistic proof-of-concept for neutralizing GM-CSF to prevent GvHD without compromising, and potentially improving, the GvL effect in patients undergoing allogeneic HSCT. Corroborating data related to the critical effect GM-CSF has on GvHD development in HSCT was published in blood advances in October 2019 by Gartlan et al.

Our Development Program

We believe that GM-CSF neutralization using lenzilumab has the potential to make allogeneic HSCT safer and more effective. Similar to GM-CSF neutralization with CMMLlenzilumab breaking the efficacy/toxicity linkage with CAR-T therapy, GM-CSF neutralization has demonstrated potential to identifyattenuate acute GvHD while maintaining the maximum tolerated dose,beneficial GvL effect in patients undergoing allogeneic HSCT. Accordingly, we aim to position lenzilumab as a “must have” companion product to any allogeneic HSCT and as a part of the standard pre-conditioning that all patients receiving allogeneic HSCT should receive or MTD,as an early treatment option in patients identified as high risk for GvHD. We believe lenzilumab has potential to prevent or recommendedreduce aGvHD in allogeneic HSCT, thereby making allogeneic HSCT safer as a potentially curative therapy for patients with hematological cancers.

We plan to study lenzilumab as a companion to allogeneic HSCT for patients with hematological cancers. We plan to commence a Phase 2 dose2/3 potentially registrational trial for lenzilumab to treat patients who have undergone allogeneic HSCT who are at high and intermediate risk for aGvHD, known as the RATinG study. The study will be conducted by the IMPACT Partnership, a collection of lenzilumab and to assess lenzilumab’s safety, pharmacokinetics, and clinical activity.  We have fully enrolled the total 12 patients22 stem cell transplant centers located in the 200, 400United Kingdom and 600 mg dose cohorts of our CMML trial, and are currently evaluating subjects in the highest dose cohort of 600 mg for continuing accrual. We also planis expected to review preliminary safety and efficacy results and anticipate completion of the ad hoc interim analysisbegin enrollment in the first half of 2018.2022. We may also usewill provide lenzilumab for the interim data fromstudy including the lenzilumab CMML Phase 1cost of import, labeling and distribution of the study drug, and support certain laboratory tests related to the study, but the majority of the study costs will be borne by the IMPACT Partnership. The goal of the trial, as it is currently contemplated, would be to determine the feasibilityefficacy and safety of rapidly commencing a Phase 1 studylenzilumab in JMML patients, orreducing non-relapse mortality at six months.

Our Commercial Opportunity

The overall number of allogeneic HSCT treatments continues to explore progressing the CMML development program. JMML is a rare pediatric cancer, is associated with poor outcomes and a very high unmet medical need for which there are no FDA-approved therapies.


Ifabotuzumab is an anti-Ephrin Type-A receptor 3, or EphA3, mAb that has the potential to offer a novel approach to treating solid tumors and hematologic malignancies, serious pulmonary conditions and as a CAR construct. Ifabotuzumab, to our knowledge, is the only anti-EphA3 compound in development.  EphA3 is aberrantly expressed on the surface of tumor cells and stroma cells in certain cancers. We have completed the Phase 1 dose escalation portion of a Phase 1/2 clinical trial in ifabotuzumab in multiple hematologic malignancies for which the preliminary results were publishedincrease annually in the journal LeukemiaU.S. and abroad. According to the Center for International Blood & Bone Marrow Transplant Research (“CIBMTR”), in 2016.  An investigator-sponsored Phase 0/1 radiolabeled imaging trial of ifabotuzumab in glioblastoma multiforme, a particularly aggressive and deadly form of brain cancer, has begun at the Olivia-Newton John Cancer Institute in Melbourne, Australia.   We are currently exploring partnering opportunities2019, approximately 10,000 allogeneic HSCT treatments were expected to enable further development of ifabotuzumab.

Lenzilumab and ifabotuzumab were each developed with our proprietary, patent-protected Humaneered® technology, which consists of methods for converting antibodies (typically murine) into engineered, high-affinity antibodies designed for human therapeutic use, typically for chronic conditions.

Our Strategy
We are a biopharmaceutical company pursuing cutting-edge science to develop our proprietary monoclonal antibodies for immunotherapy and oncology treatments.  We plan to achieve our objectives through the following strategies, which we believe reflect an innovative and responsible business model:
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Develop lenzilumab for the prevention and treatment of serious and potentially life-threatening CAR-T-related side effects.  Lenzilumab is a Humaneered recombinant monoclonal antibody that neutralizes soluble GM-CSF, a critical cytokine involved in the development of serious side-effects associated with CAR-T therapy. GM-CSF is an upstream driver in the paths of multiple diseases. Recent science shows that GM-CSF is the key initiator of inflammatory side-effects, neurotoxicity and CRS, associated with groundbreaking CAR-T cancer therapy. Lenzilumab has shown a favorable safety profile to date and has been studied in more than 100 human subjects in clinical studies - one Phase 1 and two Phase 2 clinical trials - in either healthy adults or adults with various diseases. We also have completed Phase 1 and Phase 1/2 clinical trials in 76 patients with lenzilumab’s chimeric precursor, KB002. The lenzilumab Phase 2 studies included patients with severe asthma and the run‑in safety portion of a clinical trial in patients with rheumatoid arthritis. The severe asthma study demonstrated efficacy in patients with eosinophilic asthma, but we did not continue the programs due to strategic considerations and decisions. Pre-clinical animal model work assessing lenzilumab in CAR-T toxicities is being completed. We, in conjunction with leading key opinion leaders are designing a Phase 1b/2 study to explore lenzilumab as a prophylactic treatment to minimize neurotoxicity associated with CAR-T therapy.
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Development of lenzilumab for the treatment of CMML and JMML. In July 2016, we initiated dosing in a Phase 1 clinical trial in patients with CMML to identify the maximum tolerated dose (“MTD”) or recommended Phase 2 dose of lenzilumab and to assess lenzilumab’s safety, pharmacokinetics, and clinical activity. Further, we may initiate a study of lenzilumab in JMML, a rare pediatric form of leukemia, where the primary treatment alternative, in patients who would qualify, would be a bone marrow stem cell transplant. We believe that both CMML and JMML would qualify as orphan conditions, and we intend to seek orphan designation for lenzilumab for both of these conditions. The mechanism of action of lenzilumab may also prove to be of value in multiple other autoimmune rare and orphan conditions. If FDA agrees that JMML is a rare pediatric disease and qualifies for priority review, we may receive a PRV if lenzilumab is approved by FDA for use in JMML. In addition, we may seek breakthrough therapy status which, if granted, would confer various benefits, including a fast track pathway, or separately we may submit for a fast track pathway if breakthrough therapy status is not granted.
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Partner ifabotuzumab for the treatment of rare adult and pediatric solid tumors and hematologic cancers and serious pulmonary conditions and as a CAR construct. Consistent with our strategic focus, we are now evaluating opportunities to partner ifabotuzumab in rare solid tumors like glioblastoma, pediatric cancers and certain rare hematologic cancer indications. Serious pulmonary conditions also could be a target, according to early data. We believe that some of these conditions would qualify for orphan designation, and ifabotuzumab may receive orphan designation for these conditions. In addition, we are exploring various other opportunities in the oncology field that would utilize ifabotuzumab as the basis of the therapy. These include developing a CAR construct, which could be used as a therapeutic CAR-T therapy; developing bi-specific antibody constructs including ifabotuzumab; utilizing ifabotuzumab as part of a radiopharmaceuticals therapeutic approach; and utilizing ifabotuzumab as part of an Antibody Drug Conjugate, or ADC. We are in discussions with various parties related to these additional opportunities which leverage ifabotuzumab as a platform monoclonal antibody.

Lenzilumab

Overview and Mechanism of Action

Lenzilumab, previously referred to as KB003, is a recombinant antibody designed to target and neutralize human GM‑CSF, a central actor in leukocyte differentiation, autoimmunity and inflammation. We used our proprietary and patented Humaneered antibody development platform to develop lenzilumab. There is extensive evidence linking GM-CSF expression to serious and potentially life-threatening side-effects in CAR-T therapy. Our primary focus for lenzilumab is exploring its potential to prevent and ameliorate CAR-T-related neurotoxicity and CRS. We are also developing lenzilumab for use in patients with CMML and are assessing plans to investigate its potential use in patients with JMML. In CAR-T related side effects, GM-CSF initiates a signaling cascade of inflammation that resultsbe performed in the traffickingU.S., with similar trends expected in Europe (Phelan, et al Current use and recruitmentoutcome of myeloid cells to the tumor site. These myeloid cells produce the cytokines observedhematopoietic stem cell transplantation: CIBMTR US summary slides 2020).

Lenzilumab in neurotoxicity and CRS, perpetuating the inflammatory cascade. Peer-reviewed publications in leading journals by well-recognized clinical experts have shown that GM-CSF is a biomarker present in patients who suffer serious neurotoxicity as a side-effect of CAR-T therapy. The GM-CSF receptor is expressed on myeloblasts and other progenitor cells, and binding results in differentiation and maturation into monocytes. GM‑CSF is an important part of an inflammatory cascade that stimulates white blood cells (granulocytes, including eosinophils, neutrophils, and macrophages) and maintains them in an active state during infection. However, excessive GM‑CSF may be involved in tissue damage associated with inflammatory diseases. The results of anti‑GM‑CSF in ex-vivo studies suggest lenzilumab has potential in preventing neurotoxicity associated with CAR-T therapy and certain oncology conditions, including CMML and JMML, as well as asthma, RA and other arthritides.


Lenzilumab is a Humaneered version of KB002, a low picomolar affinity, novel chimeric mAb that we licensed from Ludwig Institute for Cancer Research, or LICR. Data from our single‑dose, Phase 1 and Phase 1/2 clinical trials with KB002 supported our clinical trials with lenzilumab. In these studies, KB002 appeared to be well tolerated. Lenzilumab targets the same binding site as KB002 and has been shown to be functionally similar and appeared generally safe in previous clinical trials. See “Intellectual Property” Ludwig Institute for Cancer Research for further information on our license with LICR.

Development Program

Scientific Rationale

We believe that a strong scientific rationale exists for lenzilumab to play an important rolealso holds promise in making CAR-T therapy safer, more effective and more routine.  CAR-T cell therapy is currently limited by the risk of life-threatening neurotoxicity and CRS. Both Kymriah® and Yescarta® carry black box warnings in their labels for neurotoxicity and CRS. In the case of more severe neurotoxicity and/or CRS, patients may need to be treated on the Intensive Care Unit, or ICU, in the hospital. Because of the seriousness of these cases, which can affect between approximately 30 – 50 percent of patients receiving CAR-T, physicians planning to administer CAR-T may have to reserve an ICU bed for patients prior to treatment. This can create a significant bottleneck in relation to the hospital’s ability to administer CAR-T. Side effects associated with CAR-T may limit the number of patients that can be treated with CAR-T and also the dosage that can be safely administered affecting efficacy.  We believe higher doses of CAR-T may be more efficacious but can also be associated with a greater risk of side-effects.


Actemra (tocilizumab) is an IL-6 receptor antagonist that was recently approved by the FDA for the treatment of severe life-threatening CRS based on a retrospective analysis of pooled outcome data from CAR-T clinical trials of 45 pediatric and adult patients treated with Actemra with or without high-dose corticosteroids. There were no prospective, randomized controlled trials conducted to evaluate the safety and efficacy of tocilizumab for the treatment of severe CRS. Moreover, clinical experience has proven that tocilizumab is not effective for the treatment of neurotoxicity and cases of CRS refractory to tocilizumab have been reported underscoring the need for additional, more effective management strategies to prevent the onset of CAR-T induced neurotoxicity and CRS. It is important to note that tocilizumab is not approved for the prevention of CRS nor for the prevention or treatment of neurotoxicity. Studies have shown that administering tocilizumab prophylactically increases the number of patients who suffer serious neurotoxicity compared with those patients not receiving tocilizumab prophylactically. Further, tocilizumab is not approved for the treatment of mild or moderate cases of CRS.
Lenzilumab is in development to specifically address this unmet need and robust scientific rationale exists to support GM-CSF neutralization as a validated target in this setting. In December 2017, we held a scientific advisory board with leading key opinion leaders in the CAR-T field to validate the scientific rationale of studying lenzilumab’s anti-GM-CSF mechanism to stop CAR-T-related toxicity.  Based on feedback received from the advisory board, we created our lenzilumab development plan to study prevention of the onset of CAR-T-induced neurotoxicity while maintaining or improving CAR-T expansion, persistence and anti-tumor response and potentially reducing the need or duration for ICU stay. To that end, we started preclinical work using validated CRS animal models at the Mayo Clinic. In addition we have begun work with leading key opinion leaders, including MD Anderson Cancer Center, to advance lenzilumab into phase 1b/2 trials for the prevention of neurotoxicity and potentially CRS associated with CAR-T therapy. We expect this trial to start in the summer of 2018. We have benchmarked the studies undertaken in the CAR-T space and regulatory strategies employed and intend to leverage this knowledge in our clinical development and regulatory plans.
We also believe lenzilumab has potential as a therapy for CMML, a rare form of hematologic cancer with no FDA-approved treatment options and a three-year overall survival rate of 20% and median overall survival of 20 months, and JMML, a rare pediatric form of leukemia.months. CMML is a clonal stem cell disorder of which monocytosis is a key feature. Approximately 40% of CMML patients carry NRAS/KRAS/CBL mutations which are associated with GM-CSF hypersensitivity. CMML has features of MDS,myelodysplastic syndrome (“MDS”), including abnormal, dysplastic bone marrow cells; cytopenia; transfusion dependence; and of myeloproliferative neoplasms, including overproduction of white blood cells, organomegaly such as(e.g., splenomegaly and hepatomegalyhepatomegaly) and extramedullary disease. Approximately 15%About 15 to 20% of CMML cases progress to acute myeloid leukemia, or AML. According to the American Cancer Society, approximately 1,100 individuals in the USUnited States are newly diagnosed annually with CMML, with the majority of these new patients being age 60 or older. These patients are typically unsuitable for stem cell transplants. Preclinical studies have shown

Our Development Program

In a Phase 1 study, 3 of 6 patients with NRAS/KRAS/CBL mutations demonstrated a clinical response to lenzilumab can cause apoptosis in CMML cells by depriving them of GM-CSF. In July 2016, we initiated dosing in athe MDS/MPN International Working Group criteria. The Phase 1 clinical trial in patients with CMML to identifyidentified the MTDMaximum Tolerated Dose (“MTD”) or recommended Phase 2 dose of lenzilumab, and to assessassessed lenzilumab’s safety, pharmacokinetics, and clinical activity. Final results of this study were presented at the 2019 ASH Annual Meeting and published in blood. Building on this successful Phase 1 study in CMML, we are running a Phase 2 study in combination with azacitidine in newly diagnosed CMML patients who express NRAS/KRAS/CBL mutations which are known to be hypersensitive to GM-CSF and therefore may lend themselves to responsiveness to lenzilumab treatment. The Phase 2 study, known as “PREcision Approach to Chronic Myelomonocytic Leukemia” or “PREACH-M”, is being conducted in partnership with the South Australian Health & Medical Research Institute (“SAHMRI”) and the University of Adelaide. The study has fully enrolled 12 patients. Depending onbegun enrollment at five sites in Australia and the resultsfirst patient has been dosed. We will provide lenzilumab for this study and the majority of the CMML study we also intendcosts will be borne by the partner and funded by a grant from the Medical Research Futures Fund, a research fund set up by the Australian Government. 

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Given our interest in developing lenzilumab to investigateprevent CRS/cytokine storm in COVID-19 as well as in the potential treatment of JMML, a rarer disease, with lenzilumab.  There are approximately 420 new cases of JMML annually in the USrare cancers and the disease mostly affects children aged fourother orphan conditions such as aGvHD and younger. WeCMML, we believe that lenzilumab may be eligible for a rare pediatric diseasewe have the opportunity to benefit from various regulatory and commercial incentives, such as orphan drug exclusivity, breakthrough therapy designation, fast track designation, priority review voucher if approved for JMML. We also believe lenzilumab in CMML or JMML could qualify for orphan drug designation and potentially several other FDA incentives.

An IND for a Phase 1/2 CMML monotherapy study of lenzilumab is in effect. In July 2016, we began to enroll patients in a multicenter, open-label, repeat-dose, Phase 1 study consisting of a dose escalation phase and a dose expansion phase to evaluate the safety, pharmacokinetics, and clinical activity of lenzilumab in patients with previously-treated CMML who are no longer responsive to previous treatment.  The primary endpoint of this study is the safety of lenzilumab, as measured by the number of participants with adverse events, at various doses in order to determine a recommended Phase 2 dose. The secondary endpoint is the clinical activity of lenzilumab, as measured by changes in spleen size, blood and bone marrow measurements of disease, clinical symptoms and other measures.

Previous clinical studies of lenzilumab include a repeat‑dose, Phase 2 clinical trial of lenzilumab in RA with the inclusion of a safety run‑in portion. On completing the safety run-in portion of this trial, which showed lenzilumab to be well tolerated with no clinically significant adverse events, we reassessed the increasingly competitive RA market and chose to redirect our study of lenzilumab to severe asthma patients inadequately controlled by corticosteroids. Results from a subsequent randomized, double‑blinded, placebo‑controlled, repeat dose, intravenous Phase 2 clinical trial of asthma, revealed that the primary endpoint was not met, although a significant effect was shown in certain pre‑specified subgroups, such as those with eosinophilic asthma. As a result of a strategic shift by the company, we terminated development of lenzilumab in severe asthma.

accelerated approval.

Ifabotuzumab


Ifabotuzumab is a Humaneered mAbmonoclonal antibody, formerly referred to as KB004, which targets the EphA3 receptor, and in which the antibody carbohydrate chains lack fucose, thereby enhancing the targeted cell-killing activity of the antibody. We believe that ifabotuzumab as part of an antibody drug conjugate has the potential for treating solid tumors. In 2006, we entered into a license agreement with LICRLudwig Institute of Cancer Research (“LICR”) pursuant to which LICR granted to us certain exclusive rights to the ifabotuzumab prototype and(referred to as IIIA4) as well as EphA3 intellectual property.


Ifabotuzumab binds to the EphA3, receptor, which plays an important role in cell positioning and tissue organization during fetal development but is not thought to be expressed nor play a significant role in healthy adults. EphA3 is a tyrosine kinase receptor, aberrantly expressed on the tumor cell surfacevasculature and tumor stroma in a number of hematologic malignancies andseveral solid tumors and is also expressed on the stem cell compartment. This compartment includes malignant stem cells, the vasculature that feeds them, and the stromal cells that protect them. EphA3 expression has been documented in a number of tumor types, including AML, chronic myelogenous leukemia, chronic lymphocytic leukemia, MDS, myelofibrosis, multiple myeloma, melanoma, breast cancer, small and non-small cell lung cancer (“SCLC” and “NSCLC”), colorectal cancer, gastric cancer, renal cancer, glioblastoma multiforme (“GBM”), and prostate cancer.cancer, making it an attractive target for a range of cancers. Publications related to certain cancers have indicated that EphA3 tumor cell expression correlates with cancer growth and a poor prognosis. EphA3 is overexpressed in GBM and, in particular, in the most aggressive mesenchymal subtype.  Importantly, EphA3 is highly expressed on the tumor-initiating cell population in glioma and appears to be critically involved in maintaining tumor cells in a less differentiated state by modulating mitogen-activated protein kinase signaling. EphA3 knockdown or depletion of EphA3-positive tumor cells may reduce tumorigenic potential to a degree comparable to treatment with a therapeutic radiolabelledradiolabeled EphA3-specific monoclonal antibody. Thus,We believe EphA3 may emerge asis a functional, targetable receptor in GBM as well as certain lymphomassolid tumors. A study published in December 2018 in ‘Cancers’ showed that an antibody drug conjugate (“ADC”) comprising IIIA4 (a predecessor monoclonal antibody and leukemias.


prototype for ifabotuzumab) showed significant survival benefit in mice with GBM.

Anti-EphA3 treatment has shown encouraging preclinical results in multiple experiment types, including patient primary tumor cell assays, colony forming assays, and xenograft mouse models. Upon binding to EphA3, ifabotuzumab causes cell killing to occur either through antibody-dependent, cell-mediated cytotoxicity or ADCC, or through direct apoptosis, and in the case of tumor neovasculature, through cell rounding and blood vessel disruption. Given the differential expression pattern of EphA3 in multiple tumor types, ifabotuzumab may have the potential to kill cancer cells and the tumor stem cell microenvironment, providing for long-term responses while sparing normal cells. By developing

On April 10, 2021, we presented top-line results from the Phase 1 safety and bioimaging trial of ifabotuzumab in patients with GBM at the American Association for Cancer Research 2021 Annual Meeting. The Phase 1 study primarily sought to determine the safety and recommended Phase 2 dose of ifabotuzumab in patients with GBM, the most frequent and lethal primary brain neoplasm, with 5-year survival rates of 10%. There were no dose-limiting toxicities observed and all adverse events were readily manageable. Additional studies are being planned to evaluate ifabotuzumab as an ADC in patients with solid tumors, such as, colon, breast, prostate, and pancreatic cancer. These studies include the Olivia Newton-John Cancer Research Institute which plans to conduct a Phase 1b dose-escalation and imaging study in non-CNS solid tumors that is scheduled to begin in 2022.

HGEN005

HGEN005 is a Humaneered monoclonal antibody, formerly referred to as KB005, which selectively targets the eosinophil receptor EMR1. HGEN005 is being explored as a potential treatment for a range of eosinophilic diseases including eosinophilic leukemia both as an optimized naked antibody and as the backbone for a next generation CAR construct, wenovel CAR-T construct.

A major limitation of current eosinophil-targeted therapies is incomplete depletion of tissue eosinophils and/or lack of cell selectivity. Eosinophils are a type of white blood cell. If too many eosinophils are produced in the body, chronic inflammation and tissue and organ damage may haveresult. The origin and development of eosinophilic disorders is mostly due to eosinophils infiltrating tissue. EMR1 is expressed exclusively on eosinophils, making it an ideal target for the abilitytreatment of eosinophilic disorders. Regardless of the eosinophilic disorder, mature eosinophils express EMR1 in tissue, blood and bone marrow in patients with eosinophilia. We believe that because of its high selectivity, HGEN005 has significant potential to target both the tumortreat serious eosinophil diseases.

In preclinical work, HGEN005’s anti-EMR1 activity resulted in dramatically enhanced Natural Killer (“NK”) of eosinophils from normal and tumor vasculatureeosinophilic donors and also induced a rapid and sustained depletion of eosinophils in a novel mannernon-human primate model without any clinically significant adverse events. The development of HGEN005 is on hold while we focus on lenzilumab and buildifabotuzumab.

Intellectual Property

Intellectual property is an important part of our strategy and has been a key focus area for Humanigen. We have and continue to file aggressively on the experience with current second generation CD19 CAR-T cell therapies.  An investigator-sponsored Phase 0/1 radiolabeled imaging trial of ifabotuzumab in glioblastoma multiforme,our own inventions and in-license intellectual property and technology as it relates to our therapeutic interests. We believe that we are a particularly aggressive and deadly form of brain cancer, has begun at the Olivia-Newton John Cancer Institute in Melbourne, Australia. On December 5, 2017, the first patient received ifabotuzumab in a trial that, according to the investigators, will seek to confirm the safety of ifabotuzumab and potentially determine the best dose to effectively penetrate brain tumors. Currently, three patients have received ifabotuzumab in this study and the investigators expect approximately 12 patients to participateleader in the trial, for which eligibility criteria are recurrent GBMfield of GM-CSF neutralization to ameliorate cytokine storm as it relates to COVID-19, CAR-T and receipt of only one type of chemotherapy for disease recurrence. Consistent with our new strategic focus, we are now evaluating wider opportunities to partner ifabotuzumab. We are in early discussions with separate and various parties to leverage the unique features of ifabotuzumab to:


GvHD. 

·13Construct a CAR product to potentially be used as CAR-T therapy;
·Develop bi-specific antibodies; andTable of Contents
·Form part of a radiopharmaceutical therapeutic.

Prior to our bankruptcy, we were conducting a Phase 1/2 trial of ifabotuzumab in multiple hematologic malignancies.  The most common adverse event attributed to ifabotuzumab in our previous trial was infusion reactions (chills, fever, nausea, hypertension, and rapid heart rate) which is an expected safety finding based on the mechanism of action. The majority of infusion reactions were mild-to-moderate in severity and resolved with temporary stoppage of infusion and/or use of medications to treat symptoms. In 2014, we completed the Phase 1 dose escalation portion of our study, primarily treating patients with AML as well as patients with MDS and myelofibrosis.  We suspended enrollment in that study due to the bankruptcy filing in December 2015.

Our Humaneered Technology
Our proprietary and patented Humaneered technology platform is a method for converting existing antibodies (typically murine) into engineered, high‑affinity human antibodies designed for therapeutic use, particularly for chronic conditions.  We have developed or in‑licensed targets or research (mouse) antibodies, typically from academic institutions, and then applied our Humaneered technology to them. Lenzilumab and ifabotuzumab are both Humaneered antibodies or antibody fragments. Together, our Humaneered antibodies have been tested clinically in more than 200 patients with no evidence of serious immunogenicity. We believe our Humaneered antibodies are closer to human antibodies than chimeric or conventionally humanized antibodies, are prone to being rejected less and may bind better to the target. Specifically, our Humaneered technology generates an antibody from an existing antibody with the required specificity as a starting point and, we believe, provides the following:
·retention of identical target epitope specificity of the starting antibody and frequent generation of higher affinity antibodies;
·very-near-to-human germ line sequence, which we believe means our Humaneered antibodies are less likely to induce an inappropriate immune response in broad patient populations when used chronically than chimeric or conventionally humanized antibodies, which has proven to be the case in clinical studies;
·antibodies with physiochemical properties that facilitate process development and formulation (lack of aggregation at high concentration);
·high solubility;
·high antibody expression yields; and
·an optimized antibody processing time of three to six months.

In March 2007, we granted Novartis a non-exclusive license to our proprietary Humaneered technology after applying this technology to several antibodies for them. Under the license agreement, Novartis is able to develop antibodies to create its own therapeutics. In each case, we demonstrated the robustness and versatility of the technology by creating Humaneered antibodies with increased affinity. As we are focused on progressing our current portfolio of antibodies through clinical development and out-licensing, we are not currently dedicating additional resources to the research of additional Humaneered antibodies.

Intellectual Property

Licensing and Collaborations


Savant Agreement

The Mayo Foundation for Medical Education and Research

On June 30, 2016,19, 2019, we entered into the Mayo Agreement with the Mayo Foundation. Under the Mayo Agreement, we have in-licensed certain technologies that we believe may be used to create CAR-T cells lacking GM-CSF expression through various gene-editing tools including CRISPR-Cas9. The license covers various patent applications and know-how developed by Mayo Foundation in collaboration with us. These licensed technologies complement and broaden our position in the GM-CSF neutralization space and expand our discovery platform aimed at improving CAR-T to include gene-edited CAR-T cells. The Mayo Agreement requires the payment of milestones and royalties upon the achievement of certain regulatory and commercialization milestones.

The term of the Mayo Agreement runs from May 29, 2019 until the later of: (i) the expiration date of the last to expire of the patent rights granted; or (ii) the conclusion of a period of ten (10) years from the date of the first commercial sale, subject to termination rights specified in the agreement.

The University of Zurich

On July 19, 2019, we entered into an exclusive worldwide license agreement (the “Zurich Agreement”) with the University of Zurich (“UZH”). Under the Zurich Agreement, forwe have in-licensed certain technologies that we believe may be used to prevent GvHD through GM-CSF neutralization. The Zurich Agreement covers various patent applications filed by UZH which complement and broaden our position in the Manufacture, Developmentapplication of GM-CSF neutralization and Commercializationexpands our development platform to include improving allogeneic HSCT.

The Zurich Agreement required an initial one-time payment of Benznidazole for Human Use, or the MDC Agreement, with Savant, pursuant to$100,000, which we acquired certain worldwide rights relatingpaid to benznidazole, includingUZH on July 29, 2019. The Zurich Agreement also requires the payment of annual license maintenance fees, as well as milestones and royalties upon the achievement of certain regulatory and non-intellectual property assets related to benznidazole , any product containing benznidazole and an exclusive license for certain intellectual property assets, including know-how and processes, relating to benznidazole. Savant retains the right to use the licensed intellectual property for veterinary uses. commercialization milestones.

The MDC Agreement provides that we may jointly conduct development activities with Savant with respect to any product containing benznidazole, while we will be solely responsible for commercializing the product. As described above, we are no longer performing any work in respect of benznidazole.


As required by the MDC Agreement, we made payments to Savant totaling $2.7 million, consistingterm of the remaining portionZurich Agreement runs from July 19, 2019 until the expiration date of an initial payment (excluding a previously paid deposit of $0.5 million)the longest-lived patent right, subject to termination rights specified in the amountagreement.

Clinical Trial Agreement with the National Institute of $2.5 million, an initial monthly joint development program cost paymentAllergy and Infectious Diseases

On July 24, 2020, we entered into a clinical trial agreement (the “Clinical Trial Agreement”) with NIAID, part of $0.1 million, and reimbursementthe National Institutes of $0.1 millionHealth, which is part of Savant’s legal fees. The MDC Agreement provided for regulatory and other milestone payments of up to $21 million if we received approval from FDA and from other non-US regulatory agencies and certain other contingent payments.  Additionally, we would pay Savant royalties in the mid-teens on any net sales of any benznidazole product on a product-by-product and country-by-country basis, which royalty will be reduced to the high single digits in the United States if a PRV was not granted subsequentGovernment Department of Health and Human Services, as represented by the Division of Microbiology and Infectious Diseases. Pursuant to regulatory approval of any benznidazole product.  The MDCthe Clinical Trial Agreement, also provided that Savantlenzilumab is entitled to a portion of the amount we would receive upon the sale, if any, of a PRV regarding any benznidazole product. In addition, we also entered into a security agreement pursuant to which we granted Savant a continuing senior security interestbeing evaluated in the assetsNIAID-sponsored ACTIV-5/ BET in hospitalized patients with COVID-19. The ACTIV-5/BET-B study protocol was modified to include baseline CRP below 150 mg/L (the CRP subgroup) as the primary analysis population. The ACTIV-5/BET-B study has reached its target enrollment with over 400 patients enrolled that met this criterion and rights acquired by us pursuantwe anticipate top-line data in late first quarter or early second quarter of 2022.

 Pursuant to the MDCClinical Trial Agreement, NIAID serves as sponsor and certain future assets developed from those acquired assets.  On August 29, 2017 we ceased developmentis responsible for benznidazolesupervising and do not anticipate further obligations under the MDC.


In July 2017, we commenced litigation against Savant alleging that Savant breached the MDC Agreementoverseeing ACTIV-5/BET-B. We provided lenzilumab to NIAID without charge and seekingin quantities to ensure a declaratory judgement.  Savant has asserted counterclaims for breachessufficient supply of contract under the MDC Agreement and the Security Agreement.  The dispute primarily concerns our right under the MDC Agreement to offset certain costs incurred by us in excess of the agreed upon budget against payments due Savant.  The aggregate cost overages as of December 31, 2017 that we assert are Savant’s responsibility total approximately $3.4 million, net of a $0.5 million deductible.  We assert that we are entitled to offset $2 million in milestone payments due Savant against the cost overages, such that as of December 31, 2017, Savant owed us approximately $1.4 million in cost overages.

lenzilumab.

The Ludwig Institute for Cancer Research


In May 2004, we entered into a license agreement with the Ludwig Institute for Cancer Research or LICR,(“LICR”) pursuant to which LICR granted to us an exclusive license underfor intellectual property rights and materials related to chimeric anti-GM-CSF antibodies that formed the basis for the lenzilumab development program.lenzilumab. Under the agreement, we were granted an exclusive license to develop antibodies related to LICR’s antibodies against GM-CSF. We are responsible for using commercially reasonable efforts to research, develop, and sell lenzilumab. We pay LICR a quarterly license fee and are obligated to pay to LICR a royalty from 1.5% to 3% of net sales of licensed products, subject to certain potential offsets and deductions. Our royalty obligation applies on a country-by-country and licensed product-by-licensed product basis, and will begin on the first commercial sale of a licensed product in a given country and end on the later of the expiration of the last to expire patent covering a licensed product in a given country (which in the United States,U.S. is currently expected in 2024)2029 for the composition of matter and 2038 for methods of use in CAR-T) or 10 years from first commercial sale of such licensed product in the country. We must also pay to LICR a certain percentage of sublicensing revenue received by us. Aggregate paymentsPayments made to LICR under this license throughfor each of the twelve months ended December 31, 2017 amounted to $1.72021 and 2020 were $0.1 million.

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Other Material License Agreements


Novartis

In April 2007, we entered into an agreement with Novartis granting a non-exclusive license to our proprietary Humaneered technology for use at Novartis’ research sites to develop human antibodies for therapeutic indications. Under the agreement, Novartis was excluded from using the technology against certain targets until March 2012. In accordance with the terms of the agreement, Novartis paid us $30 million and we transferred the know‑how related to making Humaneered antibodies to enable Novartis to internally make its own antibodies. This agreement will remain in effect until the expiration of the last to expire licensed patent, which is currently expected to expire in 2025 in the United States.

LICR and ifabotuzumab


In 2006, we entered into a license agreement with LICR pursuant to which LICR granted to us certain exclusive rights to the ifabotuzumab prototype (IIIA4) which targets EphA3 and EphA3-related intellectual property. Under the agreement, we obtained rights to develop and commercialize products made through use of licensed patents and any improvements thereto, including human or Humaneered antibodies that bind to or modulate EphA3. We paid LICR an upfront option fee of $0.05 million and a further $0.05 million upon our exercise of the option for the exclusive license outlined above. We are responsible for contingent milestone payments of less than $2.5 million and royalties of 3% of net sales subject to certain potential offsets and deductions. In addition, we are obligated to pay to LICR a percentage of certain payments we receive from any sublicensee in consideration for a sublicense. Our royalty obligation exists on a country‑by‑countrycountry-by-country and licensed product‑by‑licensedproduct-by-licensed product basis, which will begin on the first commercial sale and end on the later of the expiration of the last to expire patent covering such licensed product in such country, which in the United StatesU.S. is currently expected in 2031, or 10 years from first commercial sale of such licensed product in such country. Aggregate payments made to LICR under this license through December 31, 2017 amounted to $0.6 million.


BioWa and Lonza


In October 2010, we entered into a license agreement with BioWa, Inc. (“BioWa”), or BioWa, and Lonza Sales AG or Lonza,(“Lonza”) pursuant to which BioWa and Lonza granted us a non-exclusive, royalty-bearing, sub-licensable license under certain know-how and patents related to antibody expression and antibody-dependent cellular cytotoxicity enhancing technology using BioWa and Lonza’s Potelligent® CHOK1SV technology. This technology is used to enhance the cell killing capabilities of antibodies and is currently used by us in connection with our development of ifabotuzumab. Under this agreement, we owe annual license fees, milestone payments in connection with certain regulatory and sales milestones and royalties in the low single digits on net sales of products developed under the agreement. The agreement expires upon the expiration of royalty payment obligations under the agreement, is terminable at will by us upon written notice, is terminable by BioWa and Lonza if we challenge or otherwise oppose any licensed patents under the agreement and is terminable by either party upon the occurrence of an uncured material breach or insolvency. Three of the United States patents that we license from BioWa, Inc. are the subject of ongoing litigation in U.S. District Court for the Northern District of California, in which BioWa alleges infringement of its patents.  The defendant in that case has asserted, among its counterclaims, that the patents are invalid. The defendants also petitioned the United States Patent and Trademark Office for inter partes review on the validity of the same three patents, but that request has been denied. The litigation continues with a trial set to begin in June 2018.


Patents and Trade Secrets


We use a combination of patent, trade secret and other intellectual property protections to protect our product candidates.candidates and platforms. We will be able to protect our product candidates from unauthorized use by third parties only to the extent they are covered by valid and enforceable patents or to the extent our technology is effectively maintained as trade secrets. Patent and trade secrets areIntellectual property is an important elementpart of our business.strategy. We have and continue to file aggressively on our own inventions and in-license intellectual property and technology as it relates to our therapeutic interests. Our success will depend in part on our ability to obtain, maintain, defend and enforce patent rights for and to extend the life of patents covering lenzilumab, and ifabotuzumab, HGEN005, our Humaneered technology, and our Humaneered technology,GM-CSF gene-editing CAR-T platform technologies, to preserve trade secrets and proprietary know how, and to operate without infringing the patents and proprietary rights of third parties. We actively seek patent protection, if available, in the United StatesU.S. and select foreign countries for the technology we develop. We have 60131 registered patents, including 1816 registered in the U.S. and 42115 registered in foreign countries. Of the 60131 registered patents, 41107 are owned by us, 59 are owned jointly with a third party and 1715 are exclusively licensed from a third party. We also have 1779 patent applications pending globally.


globally, of which 33 are owned by us, 20 are owned jointly with a third party and 26 are exclusively licensed from a third party. 

Using our Humaneered technology, we have developed and own atwo composition of matter patentU.S. patents covering lenzilumab and related anti-GM CSFanti-GM-CSF antibodies that provide patent protection through April 2029, a granted composition of matter patent in 15 European countries and certain foreign countries, and have four U.S. patents and nine additional pending patentspatent applications in the United StatesU.S., 21 foreign patent applications, and a number of foreign countriesone PCT international patent application covering various methods of treatment, including in the CAR-T space.space covering a broad and comprehensive range of approaches to neutralizing GM-CSF, including the use of GM-CSF k/o CAR-T cells, which, if granted, are expected to confer protection to at least September 2039. We also have current andone currently pending foreign patent applications in the United States and selected foreign countriesapplication that is jointly owned with a third party for anti-EphA3 antibodies and their use, and we developed and own an issued U.S. composition of matter patent covering ifabotuzumab and related anti-EphA3 antibodies, which is currently expected to expire in 2030.2031, and own 22 foreign patents to anti-EphA3 antibodies and therapeutic uses, in addition to owning four U.S. patents to therapeutic methods using anti-EphA3 antibodies, one European patent to be validated in 19 countries, and seven foreign patents owned jointly with a third party covering methods of treatment with anti-EphA3 antibodies. The two U.S. and 45 foreign patents to our Humaneered technology cover methods of producing human antibodies that are very specific for target antigens using only a small region from mouse antibodies.


We cannot be certain that any of our pending patent applications, or those of our licensors, will result in issued patents. In addition, because the patent positions of biopharmaceutical companies are highly uncertain

Manufacturing and involve complex legal and factual questions, the patents we own and license, or any further patents we may own or license, may not prevent other companies from developing similar or therapeutically equivalent products.  Patents also will not protect our products if competitors devise ways of making or using these products without legally infringing our patents.  In recent years, several companies have been extremely aggressive in challenging patents covering pharmaceutical products, and the challenges have often been successful. We cannot be assured that our patents will not be challenged by third parties or that we will be successful in any defense we undertake. Failure to successfully defend a patent challenge could materially and adversely affect our business.


In addition, changes in patent laws, rules or regulations or in their interpretations by the courts may materially diminish the value of our intellectual property or narrow the scope of our patent protection, which could have a material adverse effect on our business and financial condition.

We also rely on trade secrets, technical know-how and continuing innovation to develop and maintain our competitive position. We seek to protect our proprietary information by requiring our employees, consultants, contractors, outside scientific collaborators and other advisors to execute non-disclosure and confidentiality agreements and our employees to execute assignment of invention agreements to us on commencement of their employment. Agreements with our employees also prevent them from bringing any proprietary rights of third parties to us. We also require confidentiality or material transfer agreements from third parties that receive our confidential data or materials.

Research and Development

We have previously dedicated a significant portion of our resources to our efforts to develop our product candidates, particularly lenzilumab and our former lead product candidate, benznidazole.  We incurred research and development expenses of $11.2 million and $10.4 million during the years ended December 31, 2017 and 2016, respectively.  We anticipate that a significant portion of our operating expenses will continue to be related to clinical development in 2018 as we focus on the development of lenzilumab and ifabotuzumab. We do not currently plan to devote significant or any resources to pure research activities.

Manufacturing

Raw Materials

We outsource basicall development activities, including the development of formulation prototypes, andprototypes. We do not have, nor do we plan to have, any manufacturing facilities. Instead, we have adopted a manufacturing strategy of contracting with third partiesparty contract manufacturing organizations (“CMOs”) for the manufacture of bulk drug substance (“BDS”) and product. Additional contract manufacturers are used to fill, label, package,finish, labeling, packaging and distribute investigational drug products. Thisdistribution work for our product candidates. We believe our outsourcing approach allows us to maintain a leaner staff and a more flexible infrastructure, while focusingallowing us to focus our expertise on developing our products.

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The successful execution of our manufacturing strategy is a key component of our overall business strategy, as we believe that our ability to obtain regulatory approval for lenzilumab to be used commercially depends at least in part on our ability to demonstrate to regulators that we will be able to scale the manufacturing to produce a sufficient quantity of dosages to address the potential demand for the product. Our experience has been that the overall time to manufacture a 2-to-4-thousand-liter batch of lenzilumab BDS at an existing CMO and to complete the fill, finish, labeling and packaging of the vials is approximately 6 to 9 months. Accordingly, our reliance on CMOs requires us to carefully plan the availability of manufacturing slots and the availability of drug for investigation in preclinical and clinical trials and, potential commercialization. Further, our current agreements with CMOs represent large financial commitments, including upfront amounts prior to commencement of manufacturing and progress payments through the course of the manufacturing process and include payments for the initial technology transfer, which takes several months in advance of any manufacturing taking place. For a description of risks related to our manufacturing strategy, including our complete reliance on CMOs, see “Item 1A. Risk Factors.”

In 2020 and the first half of 2021, we were aggressive in pursuing manufacturing slots for lenzilumab in contemplation of its potential commercialization under an EUA in the U.S. or an equivalent authorization in the UK and EU. Please refer to “Part II, Item 7. Management’s Discussion and Analysis” for a further discussion of the costs we incurred in these efforts. Our production efforts were less successful than we had anticipated, as we experienced shortages of raw materials and critical components necessary for our manufacturing processes, delays in production and availability of manufacturing slots and failures in production at the BDS and DP level resulting in lower than anticipated yields. Further, certain of our CMOs had difficulties in producing BDS within specifications or were unable to produce BDS on a timely basis due to challenges in the supply of materials used in the production process.

In addition, MHRA in the UK has advised us that it requires certain validation work to be conducted related to production of lenzilumab prior to potential approval for sale. Guidance from FDA is that validation is not required for materials produced for sale under EUA, that validation could be completed and submitted as part of the subsequent regulatory process and that lenzilumab made prior to validation may be available for sale under an EUA, if FDA were to grant such an authorization. For lenzilumab for which no validation is planned, FDA would rely on a comparability report to ensure lenzilumab would be available for sale under an EUA. As of February 15, 2022, lenzilumab treatments for approximately 67,000 patients were in various stages of the validation process and another approximately 24,000 lenzilumab treatments had been produced, or were in process of being produced, for which we do not plan to complete validation. Another 41,000 treatments are in production at one of our CMOs for which material has not yet been released, and which may require reprocessing prior to release. At this time, it is not possible to predict if these 41,000 treatments would be released and available for sale if authorization or approval for lenzilumab were to be attained.

We have sought to mitigate our financial commitments while continuing to position lenzilumab for a future authorization or approval in the U.S., EU and UK. Our mitigation efforts included the amendment or in some cases cancelation of certain of our agreements with CMOs for future manufacturing work, some of which were contingent on EUA, in an effort to reduce our future spending. We incurred cancellation fees for several of these modifications. We also have disputed several invoices for cancellation fees and for production batches for lenzilumab that had been submitted by CMOs that failed to produce BDS within our stated release specifications, but our mitigation efforts may not be successful to recoup any such loss of lenzilumab BDS or DP. See Item 3. To this Annual Report on Form 10-K and Note 11 to the Consolidated Financial Statements included in this Annual Report on Form 10-K for more information on these disputes. In the event of authorization by MHRA, EMA, or FDA, we anticipate that the demand for commercial product could exceed the in process and planned production of lenzilumab through 2022. We intend to seek additional manufacturing capacity if authorization is obtained. We expect to use a portion of the revenues generated from commercial sale of lenzilumab following receipt of a regulatory authorization to support our efforts to expand production capacity in 2023 and beyond.

Sales and Marketing

We do not currently have theintend to outsource our sales and marketing infrastructure in place that would be necessary to market and sell and market products.our products, if authorized or approved. As our drug candidates progress, while we may build the infrastructure that would be needed to successfully market and sell any successful drug candidate on our own, we currently anticipate seekingalso seek strategic alliances and partnerships with third parties.  The establishment of a salesparties including those with existing infrastructure and marketing operation can be expensive, complicated and time consuming and could delay any product candidate launch.

with government bodies.

Competition


We compete in an industry characterized by rapidly advancing technologies, intense competition, a changing regulatory and legislative landscape and a strong emphasis on the benefits of intellectual property protection and regulatory exclusivities. Our competitors include pharmaceutical companies, other biotechnology companies, academic institutions, government agencies and other private and public research organizations. We compete with these parties to develop potential biologic therapies to treat COVID-19, to make CAR-T therapy and allogeneic HSCT safer and more effective and to develop a potential treatment for therapies for neglected and rare diseases andhematologic cancers, in addition to recruiting highly qualified personnel. Our product candidates, if successfully developed and approved, may compete with established therapies, with new treatments that may be introduced by our competitors, including competitors relying to a large extent on our drug approvals or on our biologics approvals, or with generic copies of our product approved by FDA, under an abbreviated new drug application, or ANDA,as bio-similars, referencing our drug products. Many of our potential competitors have substantially greater scientific, research, and product development capabilities, as well as greater financial, marketing, sales and human resources capabilities than we do.


In addition, many specialized biotechnology firms have formed collaborations with large, established companies to support the research, development and commercialization of products that may be competitive with ours. Accordingly, our competitors

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The current standard of care for aGvHD is daily systemic steroids, with a patient response rate of approximately 50%. CMML is currently treated via stem cell transplant, surgery or chemotherapy, typically azacytidine or decitabine. Competition for the treatment of solid tumors varies by tumor type. Surgery and/or radiation treatment is typically the first-line therapy, followed by chemotherapy. Chemotherapy may be more successful with respect to their products than weused as front-line treatment in the case of inoperable tumors and targeted therapies may be in developing, commercializing,used as second-line therapy for specific solid tumors that exhibit certain mutations. There are currently no known therapies that target EpAh3 antigen. 

Lenzilumab and achieving widespread market acceptanceCOVID-19 competition

There are currently no FDA-approved immunomodulators for our products.  In addition, our competitors’ products may be more effective or more effectively marketedthe prevention of the hyperinflammatory state associated with COVID-19; however, Emergency Use Authorization has been granted to tocilizumab and sold than anybaricitinib, two compounds that are approved for certain inflammatory conditions. The NIH treatment we or our development partners may commercialize and may render our product candidates obsolete or non-competitive before we can recover the expenses related to developing and supporting the commercializationguidelines for therapeutic management of anyhospitalized adults with COVID-19 (as of our product candidates.  Developments by competitors may render our product candidates obsolete or noncompetitive. After one of our product candidates is approved, FDA may also approve a generic version with the same dosage form, safety, strength, route of administration, quality, performance characteristics and intended use as our product. These generic equivalents would be less costly to bring to market and could generally be offered at lower prices, thereby limiting our ability to gain or retain market share.December 2021) are shown below:

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The acquisition or licensing of pharmaceutical products is also very competitive, and a number of more established companies, which have acknowledged strategies to in-license or acquire products, may have competitive advantages as may other emerging companies taking similar or different approaches to product acquisitions.  The more established companies may have a competitive advantage over us due to their size, cash flows, institutional experience and historical corporate reputation.

 

Lenzilumab and CAR-T-related toxicities competition

Two significant ongoing concerns for clinicians and FDA regarding CAR-T therapy are neurologic toxicity (NT) and CRS. Both Kymriah and Yescarta carry black box warnings in their labels for NT and CRS.

There are currently no approved therapies for the prevention of CAR-T-induced NT and CRS. The CAR-T-cell-therapy-associated TOXicity (CARTOX) Working Group of the FDA currently recommends intensive monitoring, accurate grading and aggressive supportive care, with anti-IL-6 therapy (Genentech’s Actemra, tocilizumab, IL-6-receptor monoclonal antibody that blocks IL-6) and/or corticosteroids. These treatments are reserved for severe cases of CRS to reduce the morbidity and mortality associated with CAR-T cell therapy.  Since corticosteroids suppress T-cell function and/or induce T-cell apoptosis, they limit the effectiveness of CAR-T cell therapy; thus use of corticosteroids is limited to only severe cases of CRS refractory to Actemra and severe cases of NT without concurrent CRS. Actemra has been found to be not effective in the prevention or management of CAR-T-induced NT.  In fact, serum IL-6 levels have been shown to increase shortly after administration of Actemra which may increase passive diffusion of IL-6 into the CNS and thereby may increase the risk of NT.

FDA approval of Actemra, with or without high dose corticosteroids, for the management of severe cases of CRS was announced in conjunction with approval of Kymriah solely as part of its Risk Evaluation and Mitigation Strategy (REMS) program based on a retrospective analysis of 45 patients across CAR-T clinical trials despite the lack of an IND, NDA or conduct of a prospective trial of Actemra in this setting. Tocilizumab is not approved for the prevention of CRS norFDA-approved products for the prevention or treatment of NT.ICANS or for the prevention of CRS associated with CAR-T therapy. Medicines used to manage ICANS and CRS, such as tocilizumab and corticosteroids, have not adequately controlled the side-effects, and steroids may have a detrimental impact on the efficacy of the CAR-T therapy itself while tocilizumab may increase the risk of CAR-T therapy induced ICANS and is correlated with an increased risk of infections, including severe infections. Further, these medicines have not undergone prospective clinical trials for use in this patient population. Tocilizumab is also notonly approved for the treatment of mild or moderatesevere cases of CRS.
There are no alternative options, to our knowledge, in clinical stage development at this timeCRS, but is not approved for theprevention of CRS, nor is it approved for either prevention or managementtreatment of these CAR-T-induced toxicities.  SeveralICANS.

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Other experimental approaches are inbeing explored include development in an effort to bring forwardof next-generation, potentially safer CARCAR-T constructs, including introducing suicide genes into CAR-T cells using herpes simplex virus thymidine kinase (HSV-TK)(“HSV-TK”) or inducible caspase-9 (iCasp9)(“iCasp9”) genes with “ON“on / OFF”off” switches, incorporating a co-stimulatory molecule into T-cells, using RNA-guided DNA targeting technology such as CRISPR/Cas9 system or other epitope-based / gene-editing technology. However,While it is possible that some of these are all stillapproaches could result in early stage development.


Lenzilumab and CMML/JMML Competition
Stem cell transplant is the only current way to treat and potentially cure patients with CMML lower rates of ICANS and/or JMML. Typically, adult patients with CMML who are unsuitable for stem cell transplants are frequently treated with injectable formulations of Celgene’s Vidaza® (azacitidine) or Otsuka America Pharmaceutical’s Dacogen® (decitabine), both of which are available as generic formulations.  Given the potential of lenzilumab to also improve constitutional symptoms of patients with CMML or JMML, combination therapy with azacitidine or decitabine may be warranted.  Some patients with high white blood cell counts are treated with hydroxyurea, which was introducedCRS, preliminary data suggests that improvements in the 1960ssafety profile are associated with lower rates of efficacy and durable response. This is available in generic formulationsnot surprising given the linkage that has been shown to exist between CAR-T cell expansion, efficacy and under the brand names Droxia® and Hydrea®.toxicity. There are also several other anti-GM-CSF compounds that are in various stages of development, forhowever the treatment of CMML alone or in combination with azacitidine or decitabine, including Celgene’s CC-486 (oral azacitidine) and Revlimid® (lenalidomide), Novartis and Glaxosmithkline’s Promacta® (eltrombopag), Novartis’ Farydak® (panobinostat), Astex Pharmaceutical’s ASTX727, Incyte Corporation and Novartis’ Jafaki® (ruxolitinib), Millenium Pharmaceuticals’s pevonedistat, Stemline Therapeutics’ SL-401 and Kura Oncology’s tipifarnib, amongst others.
Ifabotuzumab Competition
Glioblastoma (GBM) is the most common primary brain cancer.  Standard treatment involves surgical resection, followed by radiation and temozolomide chemotherapy. Avastin®, lomustine and carmustine are also used to treat recurrent brain cancer. Numerous drugs are under development for GBM and other brain tumors. Therapy is rarely curative due to the infiltrative naturefocus of these tumorscompounds appears to be in chronic autoimmune disorders such as rheumatoid arthritis, ankylosing spondylitis, giant cell arteritis and their resistance to radiation and chemotherapy. Immunotherapy with genetically modified T cells expressing chimeric antigen receptors (CARs) targeting interleukin IL-13Rα2, epidermal growth factor receptor variant III (EGFRvIII), or human epidermal growth factor receptor 2 (HER2) has shown promise for the treatment of gliomas in preclinical models. But targeting IL-13Rα2 and EGFRvIII is associated with the development of antigen loss variants.

related disorders.

Government Regulation


Drug Development and Approval in the U.S.


As a biopharmaceutical company operating in the United States,U.S., we are subject to extensive regulation by FDA and by other federal, state, and local regulatory agencies. FDA regulates biological products such as our productsproduct candidates under the United StatesU.S. Federal Food and Cosmetic Act or FDCA,(“FDCA”), the Public Health Service Act or the PHSA,(“PHSA”) and their implementing regulations. Under the FDCA, new drugs marketed in the United States generally must be FDA-approved under an NDA. Under the PHSA, an FDA-approved BLA is required to market a biological product, or biologic, in the United States. These laws and regulations set forth, among other things, requirements for preclinical and clinical testing, development, approval, labeling, manufacture, storage, record keeping, reporting, distribution, import, export, advertising, and promotion of our products and product candidates. Under the PHSA, in most circumstances an FDA-approved BLA is required to market a biological product, or biologic, in the U.S. Biologics receive 12 years market exclusivity from first licensure. During the COVID-19 public health emergency, however, FDA has certain authority, under the FDCA and The Pandemic and All Hazards Preparedness Reauthorization Act of 2013, to bypass the BLA pathway and issue an EUA for certain medical products, including biologics, intended for use during the emergency. An EUA, once issued for a biologic, lasts only for a limited amount of time, after which a BLA will be required for continued marketing.

Emergency Use Authorization

FDA’s EUA authority allows the agency to facilitate greater availability and use of medical countermeasures, including biologics, when the Secretary of Health and Human Services (“HHS”) has declared that circumstances exist that justify such authorization. Under such circumstances, companies may request an EUA to permit the marketing and use of a product before that product has received FDA approval, or to permit the otherwise unapproved use of an approved product. FDA may only issue an EUA if it concludes that: the chemical, biological, radiological or nuclear agent referred to in the HHS Secretary’s public health emergency declaration is capable of causing a serious or life-threatening disease; the product at issue “may be effective” to prevent, diagnose, or treat serious or life-threatening diseases or conditions that can be caused by that agent or to mitigate a disease or condition caused by an FDA-regulated product used to diagnose, treat, or prevent a disease or condition caused by that agent; and that there are no adequate, approved, and available alternatives.

The EUA “may be effective” standard requires a lower level of evidence than the “effectiveness” standard required for a BLA. FDA assesses the potential effectiveness of a possible EUA product on a case-by-case basis using a risk-benefit analysis. In deciding whether to authorize emergency use, FDA will evaluate whether the known and potential benefits of the product outweigh the known and potential risks, taking into account the totality of the scientific evidence. Such evidence may include clinical trial data, in vivo efficacy data from animal models, and in vitro data. Even where a product “may be effective,” FDA may only issue an EUA if there is no adequate, approved, and available alternative to the candidate product, either because there is no alternative product at all or because of, for example, an insufficient supply of an approved alternative to meet the emergency need; contraindications for use of an approved product in certain populations or circumstances; or the agent at issue in the public health emergency is resistant to approved and available products.

When an EUA is issued, FDA will typically limit or restrict the amount of promotional activity that may be conducted for the medical product granted an EUA and may reissue an EUA to change the terms based on a change in circumstances, such as the emergence of new clinical trial data that change the risk-versus-benefit analysis.

An EUA is not a permanent marketing authorization. Rather, an EUA may be terminated once the Secretary of HHS declares that the public health emergency is terminated; when a product that is marketed under an EUA obtains full marketing approval (for example, under a BLA); or when circumstances change (such as, for example, new data emerge that change the risk-benefit calculation). As a practical matter, where the HHS Secretary declares an end to the public health emergency that gave rise to FDA’s EUA authority, the Secretary must provide advance notice that allows for disposition of an unapproved product.

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Applications Relying on the Applicant’s Clinical Data


The approval process for a full NDA under Section 505(b)(1) of the FDCA, containing full reports of investigations of safety and effectiveness for the product, and BLAsBLA under the PHSA requirerequires the conduct of extensive studies and the submission of large amounts of data by the applicant. The drugbiologic development process for these applications will generally include the following phases:


Preclinical Testing. Before testing any compoundnew biologic in human subjects in the United States,U.S., a company must generate extensive preclinical data. Preclinical testing generally includes laboratory evaluation of product chemistry and formulation, as well as toxicological and pharmacological studies in several animal species to assess the quality and safety of the product. Animal studies must be performed in compliance with FDA’s Good Laboratory Practice or GLP,(“GLP”) regulations and the United StatesU.S. Department of Agriculture’s Animal Welfare Act.


IND Application. Human clinical trials in the United StatesU.S. cannot commence until an IND application is submitted and becomes effective. A company must submit preclinical testing results to FDA as part of the IND application, and FDA must evaluate whether there is an adequate basis for testing the drugproduct in initial clinical studies in human volunteers. Unless FDA raises concerns, the IND application becomes effective 30 days following its receipt by FDA. Once human clinical trials have commenced, FDA may stop the clinical trials by placing them on “clinical hold” because of concerns about the safety of the product being tested, or for other reasons.


Clinical Trials. Clinical trials involve the administration of the drugproduct to healthy human volunteers or to patients, under the supervision of a qualified investigator. The conduct of clinical trials is subject to extensive regulation, including compliance with FDA’s bioresearch monitoring regulations and Good Clinical Practice or GCP,(“GCP”) requirements, which establish standards for conducting, recording data from, and reporting the results of clinical trials. GCP requirements are intended to assure that the data and reported results are credible and accurate, and that the rights, safety, and well-being of study participants are protected.

Clinical trials must be conducted under protocols that detail the study objectives, parameters for monitoring safety, and the efficacy criteria, if any, to be evaluated. Each protocol is submitted to FDA as part of the IND.IND application. In addition, each clinical trial must be reviewed, approved, and conducted under the auspices of an Institutional Review Board or IRB,(“IRB”), at the institution conducting the clinical trial. Companies sponsoring the clinical trials, investigators, and IRBs also must comply with regulations and guidelines for obtaining informed consent from the study subjects, complying with the protocol and investigational plan, adequately monitoring the clinical trial, and timely reporting of adverse events. Foreign studies conducted under an IND application must meet the same requirements that apply to studies being conducted in the United States.U.S. Data from a foreign study not conducted under an IND application may be submitted in support of an NDA ora BLA if the study was conducted in accordance with GCP and FDA is able to validate the data. A study sponsor is required to publicly post certain details about active clinical trials and clinical trial results on the government website clinicaltrials.gov.


Human clinical trials are typically conducted in three sequential phases, although the phases may overlap with one another:


another and, notably, in the CAR-T setting, FDA has granted approval to all five currently marketed CAR-T therapies (Gilead/Kite’s Yescarta, and Tecartus, Novartis’s Kymriah and Bristol Myers Squibb’s Breyanzi and Abecma) based on Phase 2 data and to tocilizumab without any prospective data in the CAR-T setting:

·Phase 1 clinical trials include the initial administration of the investigational drugproduct to humans, typically to a small group of healthy human subjects, but occasionally to a group of patients with the targeted disease or disorder. Phase 1I clinical trials generally are intended to determine the metabolism and pharmacologic actions of the drug,product, the side effectsside-effects associated with increasing doses, and, if possible, to gain early evidence of effectiveness.

·Phase 2 clinical trials generally are controlled studies that involve a relatively small sample of the intended patient population and are designed to develop data regarding the product’s effectiveness, to determine dose response and the optimal dose range, and to gather additional information relating to safety and potential adverse effects.

·Phase 3 clinical trials are conducted after preliminary evidence of effectiveness has been obtained and are intended to gather additional information about safety and effectiveness necessary to evaluate the drug’sproduct’s overall risk-benefit profile, and to provide a basis for physician labeling. Generally, Phase 3 clinical development programs consist of expanded, large-scale studies of patients with the target disease or disorder to obtain statistical evidence of the efficacy and safety of the drug at the proposed dosing regimen, or with the safety, purity, and potency of a biological product.

FDA does not always require every approved therapy to complete Phase 1 through 3 studies to secure approval. Approval through expedited routes is at the discretion of FDA.

The sponsoring company, FDA, or the IRB may suspend or terminate a clinical trial at any time on various grounds, including a finding that the subjects are being exposed to an unacceptable health risk. Further, success in early-stage clinical trials does not assure success in later-stage clinical trials. Data obtained from clinical activities are not always conclusive and may be subject to alternative interpretations that could delay, limit, or prevent regulatory approval.

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NDA/

BLA Submission and Review


After completing clinical testing of an investigational drug or biologic product, a sponsor must prepare and submit an NDA ora BLA for review and approval by FDA. NDAs and BLAs areA BLA is a comprehensive, multi-volume applicationsapplication that must include, among other things, sufficient data establishing the resultssafety, purity and potency of the proposed biological product for its intended indication. The application includes all relevant data available from pertinent preclinical and clinical studies,trials, including negative or ambiguous results as well as positive findings, together with detailed information aboutrelating to the product’s composition,chemistry, manufacturing, controls and the sponsor’s plans for manufacturing, packaging, and labeling the product.proposed labeling. When an NDA ora BLA is submitted, FDA conducts a preliminary review to determine whether the application is sufficiently complete to be accepted for filing. If it is not, FDA may refuse to fileaccept the application for filing and may request additional information, in which case the application must be resubmitted with the supplemental information and review of the application is delayed.


FDA performance goals, which are target dates and other aspirational measures of agency performance to which the agency, Congressional representatives, and industry agree through negotiations that occur every five years, generally provide for action on NDA and BLA applications within 10 months of submission or 10 months from acceptance for filing for an NDA involving a new molecular entity or for an original BLA. FDA is not expected to meet those target dates for all applications, however, and the deadline may be extended in certain circumstances, such as when the applicant submits new data late in the review period. In practice, the review process is often significantly extended by FDA requests for additional information or clarification. In some circumstances, FDA can expedite the review of new drugs and biologics deemed to qualify for priority review, such as those intended to treat serious or life threateninglife-threatening conditions that demonstrate the potential to address unmet medical needs. In those cases, the targeted action date is six months from submission, or for drugs constituting new molecular entities and biologics constituting original biological products, six months from the date that FDA accepts the application for filing.


As part of its review, FDA may refer an NDA ora BLA to an advisory committee for evaluation and a recommendation as to whether the application should be approved. Although FDA is not bound by the recommendation of an advisory committee, the agency usually has followed such recommendations. FDA may also determine that a Risk Evaluation and Mitigation Strategy, or REMS program is necessary to ensure that the benefits of a new product outweigh its risks, and that the product can therefore be approved. A REMS program may include various elements, ranging from a medication guide or patient package insert to limitations on who may prescribe or dispense the drug,product, depending on what FDA considers necessary for the safe use of the drug.product. Under the Pediatric Research Equity Act, NDAs and BLAsa BLA must include an assessment, generally based on clinical study data, of the safety and effectiveness of the subject drug or biological product in relevant pediatric populations, unless the requirement is waived or deferred. Receiving orphan drug designation from FDA is one situation where such a requirement may be waived.


After review of an NDA ora BLA, FDA may determine that the product cannot be approved, or may determine that it can only be approved if the applicant cures deficiencies in the application, in which case the agency endeavors to provide the applicant with a complete list of the deficiencies in correspondence known as a Complete Response Letter or CRL.(“CRL”). A CRL may request additional information, including additional preclinical or clinical data. Even if such additional information and data are submitted, FDA may decide that the NDABLA still does not meet the standards for approval. Data from clinical trials are not always conclusive and FDA may interpret data differently than the sponsor interprets them. Additionally, as a condition of approval, FDA may impose restrictions that could affect the commercial success of a drug or require post-approval commitments, including the completion within a specified time period of additional clinical studies, which often are referred to as “Phase 4”IV” studies or “post-marketing requirements.” Obtaining regulatory approval often takes a number ofseveral years, involves the expenditure of substantial resources, and depends on a number of factors, including the severity of the disease in question, the availability of alternative treatments, and the risks and benefits demonstrated in clinical trials.


Post-approval modifications to the drug or biologic product, such as changes in indications, labeling, or manufacturing processes or facilities, may require a sponsor to develop additional data or conduct additional preclinical or clinical trials. The proposed changes would need to be submitted in a new or supplemental NDA or BLA, which would then require FDA approval.


Regulatory Exclusivities


Biologics Price Competition and Innovation Act


In 2010, the Biologics Price Competition and Innovation Act or BPCIA, (“BPCIA”) was enacted, creating an abbreviated approval pathway for biologic products that are biosimilar to, and possibly interchangeable with, reference biological products licensed under a BLA. The BPCIA also provides innovator manufacturers of original reference biological products 12 years of exclusive use from first licensure before biosimilar versions can be licensed in the United States.U.S. This means that FDA may not approve an application for a biosimilar version of a reference biological product until 12 years after the date of approvalfirst licensure of the reference biological product (with a potential six-month extension of exclusivity if certain pediatric studies are conducted and the results reported to FDA), although a biosimilar application may be submitted four years after the date of first licensure of the reference biological product. Additionally, the BPCIA establishes procedures by which the biosimilar applicant must provide information about its application and product to the reference product sponsor, and by which information about potentially relevant patents is shared and litigation over patents may proceed in advance of approval of the biosimilar product, although the interpretation of those procedures has been subject to litigation and appears to continue to evolve. The BPCIA also provides a period of exclusivity for the first biosimilar to be determined by FDA to be interchangeable with the reference product.

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FDA approved the first biosimilar product under the BPCIA in 2015, and the agency continues to refine the procedures and standards it will apply in implementing this approval pathway. FDA has released guidance documents interpreting specific aspects of the BPCIA in the years since. We would expect lenzilumab, ifabotuzumab and HGEN005, as biologics, to each receive at least 12 years exclusivity from first licensure if they are approved.

Pediatric Studies and Exclusivity

Under the Pediatric Research Equity Act, a BLA must contain data adequate to assess the safety and effectiveness of the last four years.


the proposed pediatric study or studies the applicant plans to conduct, including study objectives and design, any deferral or waiver requests and other information required by regulation. The applicant, FDA, and FDA’s internal review committee must then review the information submitted, consult with each other and agree upon a final plan. FDA or the applicant may request an amendment to the plan at any time.

For products intended to treat a serious or life-threatening disease or condition, FDA must, upon the request of an applicant, meet to discuss preparation of the initial pediatric study plan or to discuss deferral or waiver of pediatric assessments. In addition, FDA will meet early in the development process to discuss pediatric study plans with sponsors and FDA must meet with sponsors by no later than the end-of-Phase I meeting for serious or life-threatening diseases and by no later than ninety (90) days after FDA’s receipt of the study plan.

FDA may, on its own initiative or at the request of the applicant, grant deferrals for submission of some or all pediatric data until after licensing of the product for use in adults, or full or partial waivers from the pediatric data requirements. Additional requirements and procedures relating to deferral requests and requests for extension of deferrals are contained in Food and Drug Administration Safety and Innovation Act (“FDASIA”). Unless otherwise required by regulation, the pediatric data requirements do not apply to products with orphan designation.

The FDA Reauthorization Act of 2017 established new requirements to govern certain molecularly targeted cancer indications. Any company that submits a BLA three years after the date of enactment of that statute must submit pediatric assessments with the BLA if the biologic is intended for the treatment of an adult cancer and is directed at a molecular target that FDA determines to be substantially relevant to the growth or progression of a pediatric cancer. The investigation must be designed to yield clinically meaningful pediatric study data regarding the dosing, safety and preliminary potency to inform pediatric labeling for the product. Deferrals and waivers as described above are also available.

Pediatric exclusivity is another type of exclusivity in the U.S. and, if granted, provides for the attachment of an additional six months of marketing protection to the term of any existing regulatory exclusivity, including the non-patent and orphan exclusivity. This six-month exclusivity may be granted if a BLA sponsor submits pediatric data that fairly respond to a written request from FDA for such data. The data do not need to show the product to be effective in the pediatric population studied; rather, if the clinical trial is deemed to fairly respond to FDA’s request, the additional protection is granted. If reports of requested pediatric studies are submitted to and accepted by FDA within the statutory time limits, whatever statutory or regulatory periods of exclusivity or patent protection cover the product are extended by a further six months. This is not a patent term extension, but it effectively extends the regulatory period during which FDA cannot license another application.

Orphan Drug Designation


The Orphan Drug Act provides incentives for the development of drugs and biologicaltherapeutic products intended to treat rare diseases or conditions. Rare diseases and conditions generally are those affecting less than 200,000 individuals in the United States,U.S., but also include diseases or conditions affecting more than 200,000 individuals in the United StatesU.S. if there is no reasonable expectation that the cost of developing and making available in the United StatesU.S. a drug for such disease or condition will be recovered from sales in the United StatesU.S. of such drug.


product.

If a sponsor demonstrates that a drug,therapeutic product, including a biological product, is intended to treat a rare disease or condition, and meets certain other criteria, FDA grants orphan drug designation to the drugproduct for that use. FDA may grant multiple orphan designations forto different companies developing the same drugproduct for the same indication, being developed by multiple different companies, until the one company is the first to be able to secure successful approval for that drug is approved.product. The first drugproduct approved with an orphan drug designated indication is granted seven years of orphan drug exclusivity from the date of approval for that indication. During that period, FDA generally may not approve any other application for the same drugproduct for the same indication, although there are exceptions, most notably when the later product is shown to be clinically superior to the product with exclusivity. FDA can also revoke a product’s orphan drug exclusivity under certain circumstances, including when the holder of the approved orphan drug application is unable to assure the availability of sufficient quantities of the drugproduct to meet patient needs.

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A sponsor of a product application that has received an orphan drug designation is also granted tax incentives for clinical research undertaken to support the application. In addition, FDA will typically coordinate with the sponsor on research study design for an orphan drug and may exercise its discretion to grant marketing approval based on the basis of more limited product safety and efficacy data than would ordinarily be required, based on the limited size of the applicable patient population.


Expedited Programs for Serious Conditions


FDA has implemented a number of expedited programs to help ensure that therapies for serious or life-threatening conditions, and for which there is unmet medical need, are approved and available to patients as soon as it can be concluded that the therapies’ benefits justify their risks. Among these programs are the following:


Fast Track Designation


FDA may designate a product for fast trackfast-track review if it is intended, whether alone or in combination with one or more other drugs,products, for the treatment of a serious or life-threatening disease or condition and where non-clinical or clinical data demonstrates the potential to address unmet medical need for such a disease or condition. A product can also receive fast track review if it is designated as a Qualified Infectious Disease Product, or QIDP, or receives breakthrough therapy designation.


For fast trackfast-track products, sponsors may have greater interactions with FDA and FDA may initiate review of sections of a fast trackfast-track product’s NDAapplication before the application is complete, also referred to as a ‘rolling review’. This rolling review may be available if FDA determines, after preliminary evaluation of clinical data submitted by the sponsor, that a fast trackfast-track product may be effective. The sponsor must also provide, and FDA must approve, a schedule for the submission of the remaining information and the sponsor must pay applicable user fees. Furthermore, FDA’s time period goal for reviewing a fast trackfast-track application does not begin until the last section of the complete NDAapplication is submitted. Finally, the fast trackfast-track designation may be withdrawn by FDA if FDA believes that the designation is no longer supported by data emerging in the clinical trial process.

Breakthrough Therapy Designation

A product may be designated as a breakthrough therapy if it is intended, either alone or in combination with one or more other drugs,products, to treat a serious or life-threatening disease or condition and preliminary clinical evidence indicates that the product may demonstrate substantial improvement over existing therapies on one or more clinically significant endpoints, such as substantial treatment effects observed early in clinical development. The designation includes all of the features of fast trackfast-track designation, as well as more intensive FDA interaction and guidance. FDA may take certain actions with respect to breakthrough therapies, including holding meetings with the sponsor throughout the development process; providing timely advice to the product sponsor regarding development and approval; involving more senior staff in the review process; assigning a cross-disciplinary project lead for the review team; and taking other steps to design efficient clinical trials.


Accelerated Approval


Under the accelerated approval pathway, FDA may approve a drug or biologic based on a surrogate endpoint that is reasonably likely to predict clinical benefit; qualifying products must target a serious or life-threatening illness and provide meaningful therapeutic benefit to patients over existing treatments. In clinical trials, a surrogate endpoint is a measurement of laboratory or clinical signs of a disease or condition that substitutes for a direct measurement of how a patient feels, functions, or survives. Surrogate endpoints can often be measured more easily or more rapidly than clinical endpoints. A product candidate approved on this basis is subject to rigorous post-marketing compliance requirements, including the completion of Phase 4 or post-approval clinical trials to confirm the effect on the clinical endpoint. Failure to conduct required post-approval studies, or to confirm a clinical benefit during post-marketing studies, would allow FDA to withdraw the drugproduct from the market on an expedited basis. All promotional materials for drugproduct candidates approved under accelerated regulations are subject to prior review by FDA.


Priority Review


FDA may designate a product for priority review if it is a drugproduct that treats a serious condition and, if approved, would provide a significant improvement in safety or effectiveness. FDA generally determines, on a case-by-case basis, whether the proposed drugproduct represents a significant improvement in safety and effectiveness when compared with other available therapies. Significant improvement may be illustrated by evidence of increased effectiveness in the treatment of a condition, elimination or substantial reduction of a treatment-limiting drugproduct reaction, documented enhancement of patient compliance that may lead to improvement in serious outcomes, and evidence of safety and effectiveness in a new subpopulation. A priority designation is intended to direct overall attention and resources to the evaluation of such applications and will shorten FDA’s goal for taking actionacting on a marketing application from the standard targeted ten months to a target of an accelerated six months.months review.

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Created in 2012 under the Food and Drug Administration Safety and Innovation Act, or FDASIA and extended with the 21st Century Cures Act in 2016, FDA is authorized under section 529 of the FDCA to grant a PRV to NDA or BLA sponsors who receivereceiving FDA approval for a product to treat a rare pediatric disease, defined as a disease that affects fewer than 200,000 individuals in the U.S., and where more than 50% of the patients affected are aged from birth to 18 years. We believe that lenzilumabour product candidates which may assist with the treatment of rare pediatric cancers or other future product candidates that we may develop or acquirerare pediatric diseases may qualify for a PRV under this program.


program, depending on the indication.

The PRV program allows the voucher holder to obtain priority review for a product application that would otherwise not receive priority review, shortening FDA’s target review period to a targeted six months following acceptance of filing of thean NDA or BLA, or four months shorter than the standard review period. The voucher may be used by the sponsor who receives it, or it may be sold to another sponsor for use in that sponsor’s own marketing application. The sponsor who uses the voucher is required to pay additional user fees on top of the standard user fee for reviewing an NDA or BLA.

We anticipate submitting applications for one or more of these expedited programs and the targeted therapeutic indications.

Regenerative Medicine Advanced Therapy Designation

Recently, through the 21st Century Cures Act or Cures Act,(the “Cures Act”), Congress also established another expedited program, called a Regenerative Medicine Advanced Therapy, or RMAT designation. The Cures Act directs the FDA to facilitate an efficient development program for and expedite review of RMATs. To qualify for this program, the product must be a cell therapy, therapeutic tissue engineering product, human cell and tissue product, or a combination of such products, and not a product solely regulated as a human cell and tissue product. The product must be intended to treat, modify, reverse, or cure a serious or life-threatening disease or condition, and preliminary clinical evidence must indicate that the product has the potential to address an unmet need for such disease or condition. Advantages of the RMAT designation include all the benefits of the Fast Trackfast track and breakthrough therapy designation programs, including early interactions with the FDA. These early interactions may be used to discuss potential surrogate or intermediate endpoints to support accelerated approval.

Post-Licensing Regulation

Once a BLA is approved and a product marketed, a sponsor will be required to comply with all regular post-licensing regulatory requirements as well as any post-licensing requirements that FDA may have imposed as part of the licensing process. The sponsor will be required to report, among other things, certain adverse reactions and manufacturing problems to FDA, provide updated safety and potency or efficacy information and comply with requirements concerning advertising and promotional labeling requirements. Manufacturers and certain of their subcontractors are required to register their establishments with FDA and certain state agencies and are subject to periodic unannounced inspections by FDA and certain state agencies for compliance with ongoing regulatory requirements, including cGMP regulations, which impose certain procedural and documentation requirements upon manufacturers. Changes to the manufacturing processes are strictly regulated and often require prior FDA approval before being implemented. Accordingly, the sponsor and its third-party manufacturers must continue to expend time, money, and effort in the areas of production and quality control to maintain compliance with cGMP regulations and other regulatory requirements.

In addition, the distribution of prescription pharmaceutical products is subject to the Prescription Drug Marketing Act (“PDMA”) and its implementing regulations, as well as the Drug Supply Chain Security Act (“DSCA”), which regulate the distribution and tracing of prescription drug samples at the federal level and set minimum standards for the regulation of distributors by the states. The PDMA, its implementing regulations and state laws limit the distribution of prescription pharmaceutical product samples, and the DSCA imposes requirements to ensure accountability in distribution and to identify and remove counterfeit and other illegitimate products from the market.

Drug Development and Approval in the European Union and United Kingdom

In order to market a drug product outside of the United States, a company must comply with a variety of foreign regulatory requirements governing clinical studies, product approval, and commercial sale and distribution of the product. Regardless of whether a company obtains FDA approval for the product, it must obtain any necessary approvals from foreign regulatory authorities prior to commencing clinical trials or marketing the product in the relevant countries. The approval process and regulatory requirements vary significantly across jurisdictions, and the time to approval and marketing may be longer or shorter than that required for FDA approval.

European Union

The process governing approval of medicinal products in the European Union generally follows the same lines as in the United States. It entails satisfactory completion of preclinical studies and adequate and well-controlled clinical trials to establish the safety and efficacy of the product for each proposed indication. It also requires the submission to the relevant competent authorities of a marketing authorization application, or MAA, and granting of a marketing authorization by these authorities before the product can be marketed and sold in the EU. As in the United States, the EU also has a standard marketing authorization approval process and a conditional authorization process that can be used to bring medicine to the market more quickly during a public health emergency.

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The EU’s Clinical Trials Regulation (“CTR”) went into effect on January 31, 2022. The CTR repeals the Clinical Trials Directive (“CTD”) and national implementing legislation in EU Member States, which previously regulated clinical trials in the EU. The evaluation, authorization, and supervision of clinical trials are the responsibilities of EU Member States and European Economic Area (EEA) countries. Prior to the CTR, clinical trial sponsors had to submit clinical trial applications separately to regulatory authorities in each country to gain regulatory approval to conduct clinical trials. The new CTR aims to harmonize the process for assessment and supervision of clinical trials by enabling sponsors to submit a single online application for approval to run a clinical trial in several European countries, making it more efficient to carry out such multinational trials. A three-year phased-in transition period has been established.

Traditional marketing authorization in the EU may be obtained under a centralized procedure, a decentralized procedure, or a mutual recognition procedure. The data requirements and standards governing drug authorization are the same in the EU regardless of the authorization route.

The centralized procedure provides for a grant of a single marketing authorization that is valid for all EU Member States. Under the centralized procedure, drug companies submit a single marketing authorization application to European Medicines Agency (“EMA”). EMA’s Committee for Medicinal Products for Human Use (“CMPH”) will carry out a scientific assessment of the application and recommend whether or not the drug should be marketed. The European Commission will then make a legally binding decision based on the CMPH recommendation. Once granted by the European Commission, the centralized marketing authorization is valid in all EU Member States and in European Economic Area countries, although decisions about pricing and reimbursement will take place at the national and regional level before a medicine will be made available in a particular EU country. The centralized procedure is mandatory for drugs that contain a new active substance to treat certain condition (such as cancer); drugs derived from biotechnology processes, such as genetic engineering; advanced-therapy medicines, such as gene-therapy; orphan medicines for rare diseases; and some veterinary medicines. It is optional for other drugs.

The decentralized procedure allows an applicant to apply for simultaneous authorization by more than one EU Member State where a drug product has not yet been authorized by any EU Member State and does not fall within the mandatory scope of the centralized procedure. Under the decentralized procedure, one of the proposed EU Member States is asked by the applicant to act as a Reference Member State (“RMS”). The RMS conducts the initial evaluation of the product and issues a draft assessment report and related materials. The assessment report is submitted to the other “Concerned Member States” (“CMS”) who must decide whether to approve the report and related materials or to ask further questions and/or raise objections. If all issues are resolved and the application is successful, each Member State will then issue a Marketing Authorization for the product permitting it to be marketed in their country. If a CMS cannot approve the assessment report and related materials due to concerns regarding potential serious risk to public health, disputed elements may be referred to the European Commission, whose decision is binding on all Member States.

Finally, the Mutual Recognition Procedure must be used when a product has already been authorized in at least one Member State on a national basis and the Marketing Authorization Holder wishes to obtain a marketing authorization for the same product in at least one other Member State. The Member State that has already authorized the product (known as the RMS) submits its evaluation of the product to one or more other Concerned Member States, which are then asked to mutually recognize the marketing authorization of the RMS. If the application it successful, the Concerned Member State(s) will then issue a marketing authorization permitting the marketing of the product in their country.

As in the U.S., companies may apply for designation of a product as an orphan drug for the treatment of a specific indication in the EU before the application for marketing authorization is made. Orphan drugs in Europe enjoy economic and marketing benefits, including up to 11 years of exclusivity for the approved indication unless another applicant can show that its product is safer, more effective or otherwise clinically superior to the orphan-designated product.

In the EU, companies developing a new medicinal product must agree to a Pediatric Investigation Plan (“PIP”) with EMA and must conduct pediatric clinical trials in accordance with that PIP, unless a deferral or waiver applies, (e.g., because the relevant disease or condition occurs only in adults). The marketing authorization application for the product must include the results of pediatric clinical trials conducted in accordance with the PIP, unless a waiver applies, or a deferral has been granted, in which case the pediatric clinical trials must be completed at a later date. Products that are granted a marketing authorization on the basis of the pediatric clinical trials conducted in accordance with the PIP are eligible for a six-month extension of the protection under a supplementary protection certificate (if any is in effect at the time of approval) or, in the case of orphan medicinal products, a two-year extension of the orphan market exclusivity. This pediatric reward is subject to specific conditions and is not automatically available when data in compliance with the PIP are developed and submitted.

European Union – Conditional Marketing Authorization

The EMA may grant a conditional marketing authorization for medicines that address unmet needs, on the basis of less comprehensive clinical data than normally required, where the benefit of immediate availability of the medicine outweighs the risk inherent in the fact that additional data are still required. Drugs for human use, including orphan drugs, are eligible for conditional marketing authorization if they are intended to treat, prevent, or diagnose serious debilitating or life-threatening diseases, if: (1) the risk-benefit balance of the product is positive; (2) it is likely that the applicant will be in a position to provide the required comprehensive clinical study data; (3) unmet medical needs will be fulfilled; and (4) the benefit to the public health of the immediate availability on the market of the product outweighs the risk inherent in the need for additional data. Conditional marketing authorization, which may specify additional requirements regarding completion of ongoing or new studies and collection of pharmacovigilance data, is valid for one year, and may be renewed annually if the risk-benefit balance remains positive, and after assessment of the need for additional or modified conditions.

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During the COVID-19 pandemic, EMA is using the conditional marketing authorization procedure to expedite the approval of safe and effective COVID-19 treatments and vaccines in the EU. In a public health emergency such as the pandemic, the conditional marketing authorization procedure can be combined with a rolling review of data during the development of a promising medication to further expedite evaluation.

The United Kingdom

Since the exit of the UK from the European Union, Great Britain (England, Scotland, and Wales) is no longer covered by EU procedures for the grant of marketing authorizations and a separate marketing authorization will be required to market drugs (Northern Ireland is covered by the centralized authorization procedure and can be covered under the decentralized or mutual recognition procedures). It will be necessary for applicants to make a separate application to the UK Medicines and Healthcare products Regulatory Agency ("MHRA") for a UK marketing authorization. For a period of two years from January 1, 2021, MHRA may rely on a decision taken by the European Commission on the approval of a new marketing authorization in the centralized procedure, in order to more quickly grant a new Great Britain marketing authorization. A separate application, however, is still required. There is currently no procedure for mutual EU/UK recognition of new medicinal products.

MHRA has introduced a national conditional marketing authorization scheme for new drugs in Great Britain. This scheme has the same eligibility criteria as the EU scheme and is intended for drugs that fulfill an unmet medical need, such as drugs for serious and life-threatening diseases where no satisfactory treatment methods are available or where the product offers a major therapeutic advantage. MHRA may grant a conditional marketing authorization where comprehensive clinical data is not yet complete, but it is judged that such data will become available soon. The marketing authorization application must still contain adequate evidence of safety and efficacy to enable MHRA to conclude that the risk-benefit balance of the drug is positive. MHRA may take into account the designation by EMA (or another jurisdiction) of a drug as eligible for conditional marketing authorization, but MHRA will make the final decision on eligibility of the product under the Great Britain framework. Conditional marketing authorizations will be valid for one year and will be renewable annually.

With the exit of the UK from the European Union, the UK will not be implementing the CTR and the UK provisions implementing the current law as set out in the CTD will continue to apply until amended by the UK.

Data exclusivity periods in the United Kingdom are currently in line with those in the European Union; however, the Trade and Cooperation Agreement that outlines the future trading relationship between the UK and EU provides that the periods for both data and market exclusivity are to be determined by domestic law; therefore, exclusivity periods in the two jurisdictions could diverge in the future.

Gaining orphan drug designation in Great Britain following Brexit is based on the prevalence of the condition in Great Britain (rather than in the EU). It is, therefore, possible that conditions that are currently designated as orphan conditions in Great Britain will no longer be and that conditions that are not currently designated as orphan conditions in the EU will be designated as such in Great Britain. Unlike in the EU, applications for orphan drug designation in Great Britain are reviewed in parallel with the corresponding marketing authorization application.

Employees


and Human Capital Resources

As of December 31, 2017,2021, we had approximately 6 full time equivalents performingemployed 11 full-time employees, and no part-time employees, the majority of whom work remotely in various functions, including 4 full time employees,locations throughout the United States and the world. In addition, we contract with the remainder consisting ofseveral part-time independent consultants performing mainlymanufacturing, supply chain, quality assurance and control, regulatory and clinical development, intellectual property, public relations, investor relations, commercial, and finance and accounting functions. None of our employees are represented by labor unions or covered bysubject to a collective bargaining agreements.agreement. We consider our relationship with our employees to be good.


Bankruptcy

In January 2015, shortly after announcing that

Information about our Phase 2 clinical trial of a former drug candidate had not met its primary or secondary endpoints, we implemented a cost reduction plan that primarily consisted of workforce reductions. On November 5, 2015, as part of a further effort to reduce operating costs, we announced a restructuring plan that would reduce our workforceExecutive Officers

The following sets forth the names, ages and change the focuscurrent positions of our development programs. The restructuring plan provided that we would pursue strategic alternatives, suchexecutive officers as of February 16, 2022.

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Cameron Durrant, M.D., MBA, age 61, has served as our potential sale or a saleChairman of our assets or further restructuring efforts. On November 13, 2015, we announced that after discussions of various strategic alternatives, we concluded that it was unlikely that a viable transaction could be reached within the timeframe allowed by our then-limited cash resources.


On November 18, 2015, an outside investor group acquired a majority of our outstanding sharesBoard since January 2016, and one of the investors was appointed our Chief Executive Officer and Chairman. In December 2015, we issued and sold shares of common stock to investors in a private placement, whom we refer to as the PIPE Investors. Shortly thereafter, on December 17, 2015, our then-Chief Executive Officer and Chairman was arrested on charges of securities fraud, securities fraud conspiracy and wire fraud conspiracy, unrelated to our Company. This individual was immediately terminated as our Chief Executive Officer and resigned from our board of directors. Three other directors andsince March 2016. In addition, Dr. Durrant served as our Interim Chief Financial Officer resigned between December 17from July 1, 2019 to July 31, 2020. From May 2014 to January 2016, Dr. Durrant served as Founder and December 28, 2015. Our independent registered accounting firm also resignedDirector of Taran Pharma Limited, a private semi-virtual specialty pharma company developing and registering treatments in Europe for orphan conditions. Dr. Durrant served as President and Chief Executive Officer of ECR Pharmaceuticals Co., Inc., a subsidiary of Hi-Tech Pharmacal Co., Inc., from September 2012 to April 2014 until its acquisition by Akorn. He previously has been a senior executive at Johnson and Johnson, Pharmacia Corporation, GSK and Merck. Dr. Durrant was a director of Immune Pharmaceuticals Inc. from July 2014 to September 2018 and serves on December 8, 2015. Finally, in December 2015, three putative class action lawsuits were filed against usthe boards of directors of two privately held healthcare companies. Dr. Durrant earned his medical degree from the Welsh National School of Medicine, Cardiff, UK, his DRCOG from the Royal College of Obstetricians and certainGynecologists, London, UK, his MRCGP from the Royal College of the PIPE Investors threatened litigation against us for return of the funds they paid in the private placement.

As a result of these eventsGeneral Practitioners, London, UK, and other challenges facing us at the time,his MBA from Henley Management College, Oxford, UK.

Timothy Morris, CPA, age 60, joined Humanigen as Chief Operating and Financial Officer on December 29, 2015, we filed a voluntary petition for bankruptcy protection under Chapter 11 of the U.S. Bankruptcy Code. The filing was made in the United States Bankruptcy Court for the District of Delaware, or the Bankruptcy Court (Case No. 15-12628 (LSS)). During the pendency of our bankruptcy proceedings, we entered into a Debtor-in-Possession Credit and Security Agreement, or the Credit Agreement, with a group of lenders, or the DIP Lenders, pursuantAugust 1, 2020. Prior to which we received $3 million for working capital, bankruptcy-related costs, costs related to our plan of reorganization, payment of certain fees to the lenders and other costs associated with the ordinary course of business. On April 1, 2016, we also entered into a Securities Purchase Agreement, or the SPA, with the DIP Lenders. The SPA provided for the sale of our common stock, with share amounts subject to calculation as provided in the SPA, in respect of exit financing in the amount of $11 million to be received upon the Effective Date of the Plan, as defined below. These transactions were approved by the Bankruptcy Court.


On May 9, 2016, we filed with the Bankruptcy Court a Second Amended Plan of Reorganization, or the Plan, and related amended disclosure statement pursuant to Chapter 11 of the Bankruptcy Code. On June 16, 2016, the Bankruptcy Court entered an order confirming the Plan.

On June 30, 2016 (the “Effective Date”), the Plan became effective and we emerged from our Chapter 11 bankruptcy proceedings. In connection with the emergence, we entered into the MDC Agreement with Savant, pursuant to which we acquired certain worldwide rights relating to benznidazole. On the Effective Date, pursuant to the SPA and in repayment of our obligations under the Credit Agreement, we issued an aggregate of 9,497,515 shares of our common stock to the DIP Lenders. In accordance with the Plan, we also distributed cash payments and issued, or became obligated to issue, promissory notes and shares of our common stock to certain other parties.

Restructuring Transactions

On December 1, 2017, our obligations matured under the Credit and Security Agreement dated December 21, 2016, as amended on March 21, 2017 and on July 8, 2017 (the “Term Loan Credit Agreement”) with Black Horse Capital Master Fund Ltd., as administrative agent and lender (“BHCMF”), Black Horse Capital LP,assuming his position as a lender (“BHC”), Cheval Holdings, Ltd.,Humanigen officer, Mr. Morris served as a lender (“Cheval” and collectively with BHCMF and BHC, the “Black Horse Entities”) and Nomis Bay LTD, as a lender (“Nomis” and, together with the Black Horse Entities, the “Term Loan Lenders”).

On December 21, 2017, we entered into a Securities Purchase and Loan Satisfaction Agreement (the “Purchase Agreement”) and a Forbearance and Loan Modification Agreement (the “Forbearance Agreement” and, together with the Purchase Agreement, the “Restructuring Agreements”), each with the Term Loan Lenders, in connection with a series of transactions providing for, among other things, the satisfaction and extinguishment of our outstanding obligations under the Term Loan Credit Agreement and the infusion of $3.0 million of new capital. As of February 27, 2018, the date the Restructuring Transactions were completed, the aggregate amount of our obligations under the Term Loan Credit Agreement, including the Bridge Loan, the Claims Advances extended by Nomis Bay (each as discussed below) and all accrued interest and fees, approximated $18.4 million (the “Term Loans”).

On February 27, 2018 (the “Restructuring Effective Date”), the Restructuring Transactions were completed in accordance with the Restructuring Agreements. As a result, on the Restructuring Effective Date, we: (i) in exchange for the satisfaction and extinguishment of the entire $18.4 million balance of the Term Loans, including the Bridge Loan, the Claims Advances extended by Nomis Bay (each as discussed below) and all accrued interest and fees, (a) issued to the Term Loan Lenders an aggregate of 59,786,848 shares of our common stock (the “New Lender Shares”), and (b) transferred and assigned to an entity owned 70% by Nomis Bay and 30% by us (the “JV Entity”), all of our assets related to benznidazole (the “Benz Assets”), our former drug candidate, capable of being so assigned; and (ii) issued to Cheval an aggregate of 32,028,669 shares of our common stock (the “New Black Horse Shares” and, collectively with the New Lender Shares, the “New Common Shares”) for total consideration of $3.0 million (collectively, the “Restructuring Transactions”), $1.5 million of which we received on December 22, 2017 in the form of a bridge loan (the “Bridge Loan”).
On the Restructuring Effective Date, the aggregate amount of the Term Loans that were deemed to be satisfied and extinguished (i) previously owed to the Black Horse Entities, including the Bridge Loan and all accrued interest and fees, approximated $9.9 million, and (ii) previously owed to Nomis Bay, including certain advances previously extended to us by Nomis Bay totaling $0.1 million (the “Claims Advances”) and all accrued interest and fees, approximated $8.5 million. In addition, on the Restructuring Effective Date, (i) each of the Term Loan Credit Agreement, all promissory notes issued thereunder and the Intellectual Property Security Agreement, dated as of December 21, 2016, by and between us and the Term Loan Lenders, were terminated and are of no further force or effect, and (ii) and all security interests of the Black Horse Entities and Nomis Bay in our assets were released. Although the Term Loans were satisfied and extinguished, if the JV Entity (at the election of Nomis Bay) elects to keep the Benz Assets after the Restructuring Effective Date, Nomis Bay will be obligated to pay or cause the JV Entity to pay $0.3 million in legal fees and expenses owed by us to our litigation counsel, which remain unpaid in our Accounts payable.
Upon completion of the Restructuring Transactions, Nomis Bay held 33,573,530 of our common stock, or approximately 31.4% of our outstanding common stock, and the Black Horse Entities collectively held 66,870,851 shares of our common stock, or approximately 62.6% of our outstanding common stock.  Accordingly, the completion of the Restructuring Transactions on the Restructuring Effective Date resulted in a change in control of our company, as the Black Horse Entities and their affiliates owning more than a majority of our outstanding common stock. Dr. Dale Chappell, a member of our boardBoard since June 2016. Mr. Morris served as the Chief Financial Officer of directorsIovance Biotherapeutics, Inc., a biopharmaceutical company, from August 2017 until June 2020. From March 2014 to June 2017, Mr. Morris served as Chief Financial Officer and Head of Business Development of AcelRx Pharmaceuticals, Inc., a specialty pharmaceutical company. From November 2004 to December 2013, Mr. Morris served as Senior Vice President Finance and Global Corporate Development, Chief Financial Officer of VIVUS, Inc. a biopharmaceutical company. Mr. Morris received his BS in Business with an emphasis in Accounting from California State University, Chico, and is a Certified Public Accountant (Inactive).

Dale Chappell, M.D., MBA, age 51, was appointed as our Chief Scientific Officer on July 6, 2020. Dr. Chappell is the managing member of BH Management, a private investment manager that specializes in biopharmaceuticals and a significant stockholder, a position he has held since 2002. Since April 2015, Dr. Chappell has served as CEO, President and CFO of Cheval U.S. Holdings, Inc., a private investment company with holdings in the hospitality industry. Previously, Dr. Chappell was an associate with Chilton Investment Company, covering healthcare, and an analyst at W.P. Carey & Company. Dr. Chappell, who received his MD from Dartmouth Medical School and his MBA from Harvard Business School, began his career as a Howard Hughes Medical Institute fellow at the National Cancer Institute where he studied tumor immunology, worked as a researcher in the labs of Dr. Steven A. Rosenberg (widely thought of as one of the pioneers in CAR-T therapy) and Dr. Nicholas P. Restifo (a leading researcher in the field of immunology) and is published in the field of GM-CSF. Dr. Chappell served as a member of the Board from June 30,2016 to November 2017. Prior to joining Humanigen in a full-time role as our Chief Scientific Officer, Dr. Chappell advised and consulted with management as our ex-officio chief scientific officer.

Edward P. Jordan, MBA, age 54, was appointed as our Chief Commercial Officer on August 24, 2020. Mr. Jordan has more than two decades of commercial operations experience at leading biotechnology and pharmaceutical companies, having launched over a dozen products and developed new therapeutic markets in the U.S. and abroad. From 2016 until November 10,joining Humanigen, Mr. Jordan served as Senior Vice President of DBV Technologies, where he built the North American commercial organization in preparation for the launch of a lifesaving pediatric biologic. Prior to DBV Technologies, from January 2014 to July 2015, Mr. Jordan was the Senior Vice President, Hematology and Oncology Sales and Marketing at AMAG Pharmaceuticals. Prior to AMAG Pharmaceuticals, Mr. Jordan served in executive roles at Teva Pharmaceuticals. Mr. Jordan began his career at Schering-Plough, prior to the acquisition by Merck, and spent 18 years in sales and marketing leadership positions. Mr. Jordan received dual undergraduate degrees from The University of Rhode Island and an MBA from Southern New Hampshire University.

Adrian Kilcoyne, MD, MBA, MPH, age 51, was appointed as our Chief Medical Officer on April 21, 2021. Dr. Kilcoyne has significant global pharmaceutical and biotechnology industry experience and an extensive clinical background. From June 2019 until joining Humanigen, Dr. Kilcoyne served as Vice President of Oncology Global Medical Affairs, AstraZeneca most recently as Head of Evidence Generation and External Alliances, where he oversaw the global evidence strategy across the company’s entire oncology portfolio. Previously, Dr. Kilcoyne held several leadership positions at Celgene Corporation including Executive Medical Director, Global Lymphoma Program Lead, Clinical Research and Development, overseeing the development of lenalidomide in DLBCL and worked closely on the development of Breyanzi. Dr. Kilcoyne graduated from Trinity College, Dublin and holds a MSc in Public Health from the London School of Hygiene and Tropical Medicine, along with a MSc in Business Administration from the Warwick Business School.

Available Information

We were incorporated on March 15, 2000 in California and reincorporated as a Delaware corporation in September 2001. Effective August 7, 2017, controls the Black Horse Entities and accordingly, will be ablewe changed our legal name to exert control over matters of our company and will be able to determine all matters of our company requiring stockholder approval.


Available Information
Humanigen, Inc. Our principal executive offices are located at 1000 Marina Boulevard, Suite 250, Brisbane, CA  94005-1878,830 Morris Turnpike, 4th Floor, Short Hills, NJ 07078 and our telephone number is (650) 243‑3100.(973) 200-3010. Our website address is www. humanigen.com.www.humanigen.com. Our common stock is currently tradedlisted on the OTCQB Venture Market.Nasdaq Capital Market under the symbol HGEN. We operate in a single segment.

Our website and the information contained on, or that can be accessed through, the website will not be deemed to be incorporated by reference in, and are not considered part of, this Annual Report on Form 10-K. Our Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K and amendments to reports filed or furnished pursuant to Sections 13(a) and 15(d) of the Securities Exchange Act of 1934, as amended, are available free of charge on the Investor Relations portion of our web site at www.humanigen.comwebsite as soon as reasonably practicable after we electronically file such material with, or furnish it to, the SEC. In addition, the SEC maintains an internet site that contains the reports, proxy and information statements, and other information we electronically file with or furnish to the SEC, located at www.sec.gov.

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ITEM 1A.  RISK FACTORS

Our business faces significant risks and uncertainties. Certain factors may have a material adverse effect on our business prospects, financial condition and results of operations, and you should carefully consider them. Accordingly, in evaluating our business, we encourage you to consider the following discussion of risk factors, in its entirety, in addition to other information contained in or incorporated by reference into this Annual Report on Form 10-K and our other public filings with the SEC. Other events that we do not currently anticipate or that we currently deem immaterial may also affect our business, prospects, financial condition and results of operations.

Risks Related to Our Business and Industry

Risks Related to Our Efforts to Develop Lenzilumab for COVID-19

FDA declined our initial request for emergency use authorization for lenzilumab as a therapy for hospitalized patients with COVID-19. The MHRA also has not approved our application for marketing authorization of lenzilumab in this indication. We are continuing to pursue an authorization or approval for lenzilumab’s use in hospitalized patients with COVID-19 in the U.S., UK and EU, but may not obtain one.

On September 8, 2021, FDA informed us that it had declined to issue an EUA for lenzilumab for patients hospitalized with COVID-19. FDA has advised us that we will need to submit further safety and efficacy data in an amended application for EUA. Likewise, MHRA raised a number of questions in its review of our application for marketing authorization, including around efficacy, to which we need to respond. It is possible, but not assured, that the results from the Accelerating COVID-19 Therapeutic Interventions and Vaccines-5 (“ACTIV-5”) and Big Effect Trial, in the “B” arm of the trial (“BET-B”), referred to as the ACTIV-5/BET-B trial, being conducted by NIH, if confirmatory of the findings of the CRP subgroup from the LIVE-AIR study, may support our efficacy claim in such a way as to support an amendment to the EUA application and our response to MHRA. In addition, if the results from ACTIV-5/BET-B are not confirmatory of the results of the findings of the CRP subgroup from the LIVE-AIR study, we would either conduct a new clinical trial of our own or abandon this development program altogether. Unfavorable results likely would have a material and adverse impact on our stock price and ability to obtain future financing needed to continue as a going concern, as well.

If ACTIV-5/BET-B results confirm our findings from the CRP subgroup from the LIVE-AIR study, we may be required to obtain and submit additional information related to the Chemistry Manufacturing and Control (“CMC”) aspects of lenzilumab production before we attain EUA or any other authorization or approval. We are in the process of obtaining additional CMC information but there is no assurance as to exactly when or if we will generate sufficient information to satisfy regulatory requirements.

More broadly, in the context of EUA or any other request for a conditional marketing authorization or approval, there is no requirement that FDA or any regulatory body reach a favorable conclusion about our submissions. A myriad of factors, including the regulator’s assessment of the urgency of the need for a therapeutic such as lenzilumab; the efficacy of lenzilumab in new or different variants that have emerged or may evolve; and other factors such as the development of more efficacious vaccines or therapies, may influence a regulator’s decision on any submissions we may make.

Furthermore, if an EUA is granted to permit lenzilumab to be commercialized for use in the treatment of COVID-19, the authorization would only remain in effect while a “Public Health Emergency” is underway and might be expressly conditioned or limited by FDA. An EUA, if granted, could also be terminated if, in the future, there are changes in available data that bear on the risk-benefit analysis, or if alternative approved products become available.

Accordingly, it is possible that FDA and other regulatory authorities may not authorize or approve lenzilumab for the treatment of COVID-19, or that any such authorization or approval, if granted, may have significant limitations on its use or subsequently be rescinded or terminated. We may never successfully commercialize lenzilumab for use in COVID-19 patients or realize a return on our significant investment in the development, supply, and commercialization of lenzilumab for this purpose.

We need to obtain additional financing to fund our operations and, if we are unable to obtain such financing, we may be unable to continue to operate as a going concern.

During 2021, we incurred significant costs associated with our development program for lenzilumab in COVID-19 without attaining a regulatory authorization or approval to commercialize it. Our liquidity position is highly constrained as a result. We need to obtain additional financing to pursue the development of lenzilumab and our other product candidates pending our ability to commence commercialization and begin generating revenues from product sales if lenzilumab were to be authorized or approved by a regulatory agency.

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Until we can generate a sufficient amount of revenue, we intend to attempt to finance future cash needs through our at-the-market offering program or other public or private equity offerings, license agreements, grant financing and support from governmental agencies, convertible debt, other debt financings, collaborations, strategic alliances, extending and managing amounts owed to vendors and marketing, supply, distribution or licensing arrangements. Additional funds may not be available when we need them on terms that are acceptable to us, or at all. We expect that the results of the ACTIV-5/BET-B trial will be important to potential investors in evaluating an investment in our company. Accordingly, our ability to raise capital on favorable terms in the future is linked closely to the success of that trial, which we cannot assure. Unfavorable results likely would have a material and adverse impact on our stock price and ability to obtain future financing.

If we are unsuccessful in efforts to raise additional capital, based on our current levels of operating expenses, our current capital is not expected to be sufficient to fund our operations for the next twelve months. These conditions raise substantial doubt about our ability to continue as a going concern.

The consolidated financial statements for the year ended December 31, 2021 were prepared on the basis of a going concern, which contemplates that we will be able to realize our assets and discharge liabilities in the normal course of business. The financial statements do not include any adjustments that might be necessary if we are unable to continue as a going concern.

In addition, the presence of the explanatory paragraph about our ability to continue as a going concern in our financial statements, could also make it more difficult to raise the capital necessary to address our current needs.

Our commercial opportunity in COVID-19 may be reduced or eliminated if competing products for the same segment of patients that lenzilumab targets are authorized or approved.

We may not be successful in attaining any authorization or approval for lenzilumab in hospitalized COVID-19 patients before competitors receive authorization or approval of competitive therapeutics. In addition, vaccines, neutralizing antibodies, and oral antivirals which have been granted EUA and/or FDA approval to prevent COVID-19 may indirectly compete for the same patients by preventing hospitalization. As discussed in greater detail under “Item 1. Business—–Lenzilumab and COVID-19 Competition,” several neutralizing antibodies have been approved to prevent progression in the early stages of infection, multiple vaccines and boosters have been authorized by FDA and other regulatory agencies, and there are numerous other companies working on therapies and/or vaccines to treat COVID-19. If additional competing therapies and/or vaccines are approved, such approval could have a material adverse impact on our ability to attain regulatory approvals needed to commercialize lenzilumab as a therapy for COVID-19.

Manufacturing efforts relating to our lenzilumab program in COVID-19 have been extremely costly and inefficient in producing treatments for use in our clinical development program or potential sale.

Our complete reliance on third-party manufacturers to produce lenzilumab subjects us to a number of risks, as described in more detail under “—Other Risks Related to Our Business and Industry” below. We believe that our ability to obtain the requisite regulatory authorizations or approvals to permit lenzilumab to be used commercially for hospitalized patients with COVID-19 depends at least in part on our ability to demonstrate that we will be able to scale the manufacturing to produce a sufficient quantity of treatments, satisfying all applicable process performance qualification (“PPQ”) requirements, to address the potential demand for the product. Our efforts to develop that manufacturing scale have been impaired by the following:

·We have experienced and expect to continue to experience shortages of raw materials and critical components necessary for our manufacturing processes.
·We struggled to reserve manufacturing slots at our CMOs. During the latter half of 2020, and continuing into 2021, it was and continues to be more challenging and expensive to obtain these slots due to increased demand for production at our CMOs, many of which also manufacture vaccines and other therapeutics.
·Even after being reserved and paid for, the manufacturing slots for which we contracted were in some cases displaced as mandated from Rated Orders issued under the U.S Defense Production Act (“DPA”). This displacement risk has caused us to expend significant efforts to manage our supply chain and add additional CMOs.
·Some of our CMOs struggled or outright failed to produce lenzilumab meeting our specifications. The process of manufacturing biologics is extremely susceptible to product loss due to contamination, equipment failure or improper installation or operation of equipment, or vendor or operator error. Even minor deviations from normal manufacturing processes could result in reduced production yields, product defects and other supply disruptions. If microbial, viral, foreign substances or other contaminations are discovered in our products or in the manufacturing facilities in which our products are made, such manufacturing facilities may need to be closed for an extended period of time to investigate and remedy the contamination. We lost batches of lenzilumab BDS to several of these disruptive errors, which has limited the number of potential treatments on hand. In addition, two of our CMOs have denied responsibility for the challenges they experienced and are demanding payment despite not delivering usable BDS; these payment demands, if resolved adversely to us, would further impair our liquidity.

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·Subsequent to FDA’s declination to grant EUA following our initial request, we took action to cancel future manufacturing slots. While some in-process work is continuing, we do not yet have any capacity reserved for lenzilumab production beyond 2022, nor do we have agreements in place for the commercial production of lenzilumab. Accordingly, our ability to scale our manufacturing could be delayed if we were to attain a regulatory authorization or approval to commercialize lenzilumab in hospitalized COVID-19 patients later in 2022.

Interim, top-line, ad-hoc, retrospective, exploratory or preliminary data from our clinical trials that we announce or publish from time-to-time may change as more patient data become available and are subject to audit and verification procedures that could result in material changes in the final data.

From time-to-time, we may publicly disclose preliminary, “top-line” or other data from clinical trials, which is based on a preliminary analysis of then-available data, and the results and related findings and conclusions are subject to change following a full analysis of all data related to the particular trial. We may also seek to publish additional ad-hoc, retrospective or exploratory data, including results from patients with baseline CRP levels <150 mg/L. We also make assumptions, estimations, calculations and conclusions as part of our analyses of data, and we may not have received or had the opportunity to fully and carefully evaluate all data. As a result, such results that we report may differ from future results of the same trials, or different conclusions or considerations may qualify such results once additional data have been received and fully evaluated. Such data also remain subject to audit and verification procedures that may result in the final data being materially different from the preliminary data we previously published. As a result, interim, top-line, or preliminary data should be viewed with caution until the final data are available. Such data from clinical trials are subject to the risk that one or more of the clinical outcomes may materially change as patient enrollment continues and more patient data become available. Adverse differences between such data and final data could significantly harm our business prospects. Further, disclosure of interim, top-line or preliminary data by us or by our competitors could result in volatility in the price of shares of our common stock and dramatic spikes in trading volume, as we experienced following our announcement of top-line data from the LIVE-AIR study in March 2021.

In addition, others, including regulatory agencies, may not accept or agree with our assumptions, estimates, calculations, conclusions or analyses or may interpret or weigh the importance of data differently, which could impact the value of the particular program, the approvability or commercialization of the particular product candidate or product, and our business in general. FDA’s action to decline our initial request for EUA represents a dramatic manifestation of this risk. In addition, the information we choose to publicly disclose or to publish via a preprint publication regarding a particular study or clinical trial is based on what is typically extensive information, and you or others may not agree with what we determine is the material or otherwise appropriate information to include in our disclosure, and any information we determine not to disclose may ultimately be deemed significant with respect to future decisions, conclusions, views, activities or otherwise regarding a particular drug, product candidate, or our business. If the top-line data that we report differ from actual results, or if others, including regulatory authorities, disagree with the conclusions reached, our ability to obtain approval for and commercialize our current or any our future product candidate, our business, operating results, prospects or financial condition may be harmed.

Target enrollment in the ACTIV-5/BET-B study has been reached in the primary analysis group (CRP<150 mg/L < 85 years old). Analysis of data can begin once the database lock has occurred. The NIH controls the data analysis and we may be unable to influence the timeline for completion. The primary endpoint is based on an assessment 29 days after treatment, and accordingly we believe top-line data from this study could be available in late first quarter or early in the second quarter of 2022, but the NIH may choose to wait until day 60 to complete their analysis. In addition, the COVID-19 pandemic, and in particular the widespread transmission of the omicron variant even among vaccinated people, has had a significant negative impact on worker productivity. It is possible that, due to COVID-19 or other reasons, the timeline to collect and analyze the data from ACTIV-5/BET-B may be delayed, causing the anticipated timeline to slip. There can be no assurance that we will be able to report top-line results within the timeline established by our guidance or that the top-line results will be consistent with the final results as reported after Day 60.

We cannot predict public reaction or the impact on the market price of our common stock once further announcements regarding lenzilumab or developments from ACTIV-5/BET-B are announced. Given the attention being paid to the COVID-19 pandemic and the public scrutiny of COVID-19 development announcements and data releases to date, any public announcements we make in the coming months regarding the ongoing development and regulatory process for lenzilumab may attract significant attention and scrutiny and as a result, the price of our common stock may be volatile during this time. 

If an authorization or approval were granted for lenzilumab, we may be unable to accurately predict demand for lenzilumab or to produce sufficient quantities on a timely basis to meet demand.

If lenzilumab were authorized or approved for commercial use, we may be unsuccessful in estimating user demand and may not be effective in matching inventory levels and locations to actual end user demand, in particular if the COVID-19 pandemic, including emerging variants, is effectively contained or the risk of patients being hospitalized as a result of coronavirus infection is significantly diminished. In addition, adverse changes in economic conditions, increased competition, including through approved/authorized vaccines or other therapeutics (including neutralizing antibodies and oral antivirals), or other factors may cause hospitals or other users or distributors of lenzilumab to reduce inventories of our products, which would reduce their orders for lenzilumab, even if end user demand has not changed. As a result, our revenues could be difficult to predict and vulnerable to extreme fluctuations.

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There can be no assurance that lenzilumab, even if approved, would ever become profitable, due to government or healthcare provider or payer interest and public perception regarding vaccines and treatments for COVID-19 related complications.

As a result of the emergency situations in many countries, there is a heightened risk that a COVID-19 therapy or other treatments for COVID-19 symptoms may be subject to adverse governmental actions in certain countries, including intellectual property expropriation, compulsory licenses, strict price controls or other actions. Additionally, we may need, or we may be required by governmental or non-governmental authorities, to set aside specific quantities of doses of lenzilumab for designated purposes or geographic areas. We may face challenges related to the allocation of supply of lenzilumab, particularly with respect to geographic distribution. Thus, even if lenzilumab is approved, such governmental actions may limit our ability to recoup our current and future expenses incurred to develop and commercialize lenzilumab.

Furthermore, public sentiment regarding commercialization of a COVID-19 therapy or other treatment may limit or negate our ability to generate revenues from sales of lenzilumab. If authorized or approved, we may face significant public attention and scrutiny over any future business models and pricing decisions with respect to lenzilumab. If we are unable to successfully manage these risks, we could face significant reputational harm, which could negatively affect the price of our common stock.

We currently have no internal sales and marketing capabilities and will rely on third parties to market and sell lenzilumab if we attain an EUA or other regulatory approval for its commercialization, and any product candidates we may successfully develop. We or they may not be able to effectively market and sell any such product candidates.

We currently do not have internal sales and marketing infrastructure in place that would be necessary to sell and market products and we may choose to not build this capability in-house. As is the case with many, if not most, small companies seeking to commercialize their products and who have not yet partnered with a larger biotech or pharmaceutical company, we have entered into an arrangement to outsource logistics and distribution services as described under “Item 1. Business—Sales and Marketing.” There can be no assurance that our partner will be effective in distributing lenzilumab.

If we or any of our potential partners fail to hire, train, retain and manage qualified sales personnel, market our product successfully or on a cost-effective basis, our ability to generate revenue will be limited and we will need to identify and retain an alternative third-party, or develop our own sales and marketing capability. The establishment of an in-house sales and marketing operation can be expensive and time consuming and could delay any product candidate launch.

Other Risks Related to Our Business and Industry

We have a history of operating losses, we expect to continue to incur losses, and we may never become profitable.

We have incurred net losses eachin nearly every year since our inception except forinception. For the year ended December 31, 2007. For the fiscal year ended December 31, 20172021, we incurred a net loss of $21.9$236.6 million, and we have an accumulated deficit of $262.5$611.1 million as of December 31, 2017. Furthermore, on December 29, 2015, we filed a voluntary petition for bankruptcy protection under the Bankruptcy Code. On June 30, 2016, our Second Amended Plan of Reorganization, or the Plan, dated May 9, 2016, as amended, became effective and we emerged from our Chapter 11 bankruptcy proceedings. See “Bankruptcy” in Item 1 of this Annual Report and see “Risks Related to Our Bankruptcy” below for further information on our bankruptcy and emergence from bankruptcy.

To date,2021. Since inception, we have only recognized a nominal amount of revenue from payments for funded research and development and for license or collaboration fees.fees, $3.6 million of which was recognized in the year ended December 31, 2021. We expect to make substantial expenditures and incur additional operating losses in the future to further develop and commercialize our product candidates. Our accumulated deficit is expected to increase significantly as we continue our development and clinical trial efforts. Our ability to achieve and sustain profitability depends on obtaining regulatory approvals for and successfully commercializing our product candidates, either alone or with third parties. We do not currently have the required approvals to market any of our product candidates and we may never receive them. We may not be profitable even if we or any future development partners succeed in commercializing any of our product candidates. Because of the numerous risks and uncertainties associated with developing and commercializing our product candidates, we are unable to predict the extent of any future losses or when we will become profitable, if at all.
We will need substantial additional capital to develop and commercialize our product candidates and to continue as a going concern, and our access to capital funding is uncertain.
Despite completing the Restructuring Transactions, we will require substantial additional capital to continue as a going concern and to support our business efforts, including obtaining regulatory approvals for lenzilumab or other product candidates, clinical trials and other studies, and, if approved, the commercialization of our product candidates. The amount of capital we will require and the timing of our need for additional capital will depend on many factors, including:
the type, number, timing, progress, costs, and results of the product candidate development programs that we are pursuing or may choose to pursue in the future;
the scope, progress, expansion, costs, and results of our pre-clinical and clinical trials;
the timing of and costs involved in obtaining regulatory approvals;
our ability to re-list our common stock on a national securities exchange, whether through a new listing or by completing a strategic transaction;
our ability to establish and maintain development partnering arrangements and any associated funding;
the emergence of competing products or technologies and other adverse market developments;
the costs of maintaining, expanding, and protecting our intellectual property portfolio, including potential litigation costs and liabilities;
the resources we devote to marketing, and, if approved, commercializing our product candidates;
the scope, progress, expansion and costs of manufacturing our product candidates; and
the costs associated with being a public company.
We will need to seek additional financing from a number of sources, including, but not limited to, the sale of equity or debt securities, strategic collaborations, and licensing of our product candidates. Additional funding may not be available to us on a timely basis or at acceptable terms, if at all. Our ability to access capital when needed is not assured and, if not achieved on a timely basis, would materially harm our business, financial condition and results of operations. If adequate funds are not available, we may be required to delay, reduce the scope of, or eliminate one or more of our development programs. We may also be required to sell or license to others our technologies, product candidates, or development programs that we would have preferred to develop and commercialize ourselves and on less than favorable terms, if at all. If in the best interests of our stockholders, we may also find it appropriate to enter into a strategic transaction that could result in, among other things, a sale, merger, consolidation or business combination.
If management is unsuccessful in efforts to raise additional capital, based on our current levels of operating expenses, our current capital is not expected to be sufficient to fund our operations for the next twelve months.  These conditions raise substantial doubt about our ability to continue as a going concern.
Our auditor has expressed substantial doubt about our ability to continue as a going concern and absent additional financing we may be unable to remain a going concern.
If we are unsuccessful in our efforts to raise additional capital, including in the immediate future, based on our current levels of operating expenses, our current capital is not expected to be sufficient to fund our operations for the next twelve months.  These conditions raise substantial doubt about our ability to continue as a going concern. The Report of Independent Registered Public Accounting Firm at the beginning of the Consolidated Financial Statements included in Part II, Item 8, “Financial Statements and Supplementary Data” of this Annual Report on Form 10-K includes an explanatory paragraph about our ability to continue as a going concern.
The Consolidated Financial Statements for the year ended December 31, 2017 were prepared on the basis of a going concern, which contemplates that we will be able to realize our assets and discharge liabilities in the normal course of business.  Our ability to meet our liabilities and to continue as a going concern is dependent upon the availability of future funding.  The financial statements do not include any adjustments that might be necessary if we are unable to continue as a going concern.
In addition, our current financial situation, and the presence of the explanatory paragraph about our ability to continue as a going concern, could also make it more difficult to raise the capital necessary to address our current needs.
We are exploring strategic alternatives, but there can be no assurance that we will be successful in identifying or completing any strategic alternative or that any such strategic alternative will yield additional value for our stockholders. 

We have an ongoing review of strategic alternatives to ensure our current structure optimizes our ability to execute our strategic plan and to maximize stockholder value. The review of strategic alternatives could result in, among other things, a sale, merger, consolidation or business combination, asset divestiture, partnering, licensing or other collaboration agreements, or potential acquisitions or recapitalizations, in one or more transactions, or continuing to operate with our current business plan and strategy. There can be no assurance that the exploration of strategic alternatives will result in the identification or consummation of any transaction.
In addition, we may incur substantial expenses associated with identifying and evaluating potential strategic alternatives. The process of exploring strategic alternatives may be time consuming and disruptive to our business operations and if we are unable to effectively manage the process, our business, financial condition and results of operations could be adversely affected. We also cannot assure that any potential transaction or other strategic alternative, if identified, evaluated and consummated, will provide greater value to our stockholders than that reflected in our current stock price. Any potential transaction would be dependent upon a number of factors that may be beyond our control, including, among other factors, market conditions, industry trends, the interest of third parties in our business and the availability of financing to potential buyers on reasonable terms.

Our business is solely dependentdepends on the success of our current product candidates, lenzilumab and ifabotuzumab.candidates. We cannot be certain that we will be able to obtain regulatory approval for, or successfully commercialize, any of our product candidates.

We have a limited pipeline of product candidates and arewe do not conductingplan to conduct active research at this time for discovery of new molecules or antibodies. We are currently dependentdepend on the successful continued development and attainment of regulatory authorization or approval of our current product candidates for our future business success. Since the FDA’s August 29, 2017 announcement relating to benznidazole, our primary focus has shifted to investing our time and financial resources in the development of lenzilumab and ifabotuzumab.  We will need to successfully enroll and complete clinical trials of lenzilumab and ifabotuzumab, and potentially obtain regulatory approval to market these products. The future clinical, regulatory and commercial success of our product candidates is subject to a number of risks, including the following:

·we may not be able to enroll adequate numbers of eligible patients in the clinical trials we propose to conduct;conduct, whether alone or through collaborations;

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·we may not have sufficient financial and other resources to complete thefund our clinical trials;trials or collaborations;
·we may not be able to provide acceptable evidence of safety and efficacy for our product candidates;
·the results of our clinical trials or collaborations may not meet the level of statistical or clinical significance, or product safety, required by FDA forto move to the next stage of development or, ultimately, obtain marketing approval;approval from FDA;
·we may not be able to obtain, maintain and enforce our patents and other intellectual property rights; and
·we may not be able to obtain and maintain commercial manufacturing arrangements with third-party manufacturers or establish commercial-scale manufacturing capabilities.
Furthermore, even if we do receive

In addition, the fluid and unpredictable nature of the COVID-19 pandemic may affect our ability to conduct our ongoing clinical trials, delay the initiation of planned and future clinical trials, cause interruptions in the supply of raw materials or products, delay the collection of clinical trial data, and disrupt regulatory approval to market any of our product candidates, any such approval may be subject to limitations on the indicated uses for which we may market the product. If any of our product candidates are unsuccessful, that could have a substantial negative impact on our business.

activities. Accordingly, even if we are able to obtain the requisite financing to continue to fund our development programs, we cannot assure you that our product candidates will be successfully developed or commercialized. If we or any future development partners are unable to develop, or obtain regulatory approval for or, if approved, successfully commercialize one or more of our product candidates, we may not be able to generate sufficient revenue to continue our business.
Our

Furthermore, even if we do receive regulatory approval to market any of our product candidates, any such approval may be subject to limitations on the indicated uses for which we may market the product. If any of our product candidates are at an early stageunsuccessful, that could have a substantial negative impact on our business. 

The adoption of CAR-T therapies as the potential standard of care for treatment of certain cancers is uncertain, and dependent on the efforts of a limited number of market entrants, and if not adopted as anticipated, the market for lenzilumab or next-generation gene-edited CAR-T therapies may be limited or not develop.

We are seeking to advance the development of lenzilumab to address, among other things, the serious and potentially fatal side effects, specifically ICANS and CRS associated with CAR-T therapies and to improve the efficacy of these treatments. We, through our collaboration with Mayo Clinic, are also working to create next-generation gene-edited CAR-T therapies using GM-CSF gene knockout technologies. Although five CAR-T therapies have been approved by FDA to date, the use of engineered T cells as a potential cancer treatment is a recent development and may not be successfully developedbroadly accepted by physicians, patients, hospitals, cancer treatment centers, payers and others in the medical community.

If the medical and payer community is not sufficiently persuaded of the safety, efficacy and cost-effectiveness of CAR-T therapy and the potential advantages of using lenzilumab compared to existing and future therapeutics, and there is not significant market acceptance of CAR-T therapy as the standard of care for treatment of certain cancers, the market for lenzilumab or commercialized.

Our product candidatesnext-generation gene-edited CAR-T therapies may be limited or not develop, and our stock price could be adversely affected.

CAR-T therapies currently in early development purport to incorporate technology that may minimize or eliminate the adverse side-effects, namely ICANS and CRS, and improve on efficacy, that we believe have impaired the uptake of the approved CAR-T therapies. If these developing therapies are proven safer and equally or more efficacious in their proposed indications and approved for use by FDA and other regulatory agencies, the market growth for the currently approved CAR-T therapies may be limited, impairing demand for lenzilumab.

In recent years, several biotechnology companies describing business plans focusing on development of CAR-T therapies have completed or announced they are pursuing initial public offerings (“IPOs”). Several of these companies have described their belief that their therapies will not result in the same level of ICANS or CRS as has been experienced in use of previously FDA-approved CAR-T therapies. While these products are in early-stage development, the early stagedata is limited and these products have not yet been approved for use by FDA, if new CAR-T therapies with lower occurrences of developmentCRS and will require substantial clinical development, testing, and regulatory approval prior to commercialization. None of our product candidates have advanced into a pivotal study and itICANS are approved, the market for lenzilumab in conjunction with CAR-T therapy may be years beforediminished. Any such failure of a study is initiated, if at all. Of the large number of drugs in development, only a small percentage successfully complete FDA regulatory approval process and are commercialized. We have discontinued the development of prior product candidates after they failed to meet clinical endpoints in non-pivotal trials. Accordingly, even if we are able to obtain the requisite financing to continue to fund our development programs, we cannot assure you that our product candidates will be successfully developed or commercialized. If we or any future development partners are unablemarket for lenzilumab to develop could adversely affect our stock price. In addition, if new CAR-T therapies that offer improved efficacy, either with or obtain regulatory approvalwithout improved safety, are approved, the market for or,lenzilumab which is used in conjunction with CAR-T therapy may be diminished if approved, successfully commercialize, one orsuch CAR-T therapy is used in preference to existing CAR-T therapy. For more of our product candidates, we may not be able to generate sufficient revenue to continue our business.

information regarding FDA-approved CAR-T therapies, see “Item 1. Business—Lenzilumab in CAR-T.”

Our business could target benefits from various regulatory incentives, such as orphan drug exclusivity, breakthrough therapy designation, fast track designation, and priority review, but we may not ultimately qualify for or benefit from these arrangements.

incentives.

We may seek various regulatory incentives, such as orphan drug exclusivity, breakthrough therapy designation, fast track designation, accelerated approval, priority review and PRVs,Priority Review Vouchers (“PRVs”), where available, that provide for certain periods of exclusivity, expedited review and/or other benefits, and we may also seek similar designations elsewhere in the world. Often, regulatory agencies have broad discretion in determining whether or not products qualify for such regulatory incentives and benefits. We cannot guarantee that we will be able to receive orphan drug or NCE status from FDA or equivalent regulatory designations elsewhere. We also cannot guarantee that we will obtain breakthrough therapy or fast track designation, which may provide certain potential benefits such as more frequent meetings with FDA to discuss the development plan, intensive guidance on an efficient drug development program, and potential eligibility for rolling review or priority review. Legislative developments in the U.S., including recent proposed legislation that would restrict eligibility for PRVs, may affect our ability to qualify for these programs in the future.

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Even if we are successful in obtaining beneficial regulatory designations by FDA or other regulatory agency for our product candidates, such designations may not lead to faster development or regulatory review or approval and it does not increase the likelihood that our product candidates will receive marketing approval. We may not be able to obtain or maintain such designations for our product candidates, and our competitors may obtain these designations for their product candidates, which could impact our ability to develop and commercialize our product candidates or compete with such competitors, which would adversely impact our business, financial condition or results of operations.

There is a limited amount of information about us upon which investors can evaluate our product candidates and business prospects, including because we have a limited operating history developing product candidates, and we have not yet successfully commercialized any products, and have changed our strategy and oura relatively small management team, and emerged from bankruptcy.

On August 29, 2017, we shifted ourteam.

Our primary focus towardis developing our proprietary monoclonal antibody portfolio, which comprisesprimarily lenzilumab and ifabotuzumab, for use in addressing significant unmet needs in oncology and CAR-T therapy.iFab. Our relatively new team, new strategic business focus and limited operating history developing clinical-stage product candidates may make it more difficult for us to succeed or for investors to be able to evaluate our business and prospects. In addition, as an early-stage clinical development company, we have limited experience in development activities, including conducting clinical trials, or seeking and obtaining regulatory approvals.approvals, even though our executives have had relevant experience at other companies. We currently have ten full-time employees and therefore are also heavily dependent at this time on external consultants and expert vendors for scientific, clinical, scientific, contract manufacturing and regulatory expertise. We have not yet demonstrated an ability to successfully overcome many of the risks and uncertainties frequently encountered by companies in the biopharmaceutical area. For example, toTo execute our business plan, we will need to successfully:

execute our product candidate development activities, including successfully completing our clinical trial programs;
obtain required regulatory approvals for the development and commercialization of our product candidates;
manage our spending as costs and expenses increase due to clinical trials, regulatory approvals, manufacturing and commercialization;
secure substantial additional funding;
develop and maintain successful strategic relationships;
build and maintain a strong intellectual property portfolio;
build and maintain appropriate clinical, sales, manufacturing, distribution, and marketing capabilities on our own or through third parties; and
gain market acceptance and favorable reimbursement status for our product candidates.

·execute our product candidate development activities, including successfully completing our clinical trial programs, including those conducted under our collaborations and partnerships;
·obtain required regulatory approvals or authorizations for the development and commercialization of our product candidates;
·manage our costs and expenses related to clinical trials, regulatory approvals, manufacturing and commercialization;
·secure substantial additional funding;
·develop and maintain successful strategic relationships;
·build and maintain a strong intellectual property portfolio;
·build and maintain appropriate clinical, sales, manufacturing, distribution, and marketing capabilities on our own or through third parties; and
·gain market acceptance and favorable reimbursement status for our product candidates.

If we are unsuccessful in accomplishing these objectives, we may not be able to develop product candidates, raise capital, expand our business, or continue our operations.

In addition to our collaborations with the NIH, Mayo Clinic, IMPACT Partnership, SAHMRI and the University of Adelaide, and the Olivia Newton-John Cancer Research Centre, we may, in the future, seek to enter into collaborations with other third parties for the discovery, development and commercialization of our product candidates. If our collaborators cease development efforts under our collaboration agreements, or if any of those agreements are terminated, these collaborations may fail to lead to commercial products, and we may never receive milestone payments or future royalties under these agreements.

We may in the future seek to enter into agreements with other third-party collaborators for research, development and commercialization of other therapeutic technologies or product candidates. Biopharmaceutical companies are our likely future collaborators for any marketing, distribution, development, licensing, or broader collaboration arrangements. If we fail to enter into future collaborations on commercially reasonable terms, or at all, or such collaborations are not successful, we may not be able to execute our strategy to develop our product candidates or therapies that we believe could benefit from the resources of either larger biopharmaceutical companies or those specialized in a particular area of relevance.

With respect to our existing collaboration agreements, we have limited control over the amount and timing of resources that our collaborators dedicate to the development or commercialization of our product candidates. Moreover, our ability to generate revenues from these arrangements will depend on our collaborators’ abilities to successfully perform the functions assigned to them in these arrangements.

Collaborations involving our product candidates pose the following risks to us, among others:

·collaborators have significant discretion in determining the efforts and resources that they will apply to these collaborations;
·collaborators may not pursue development and commercialization of our product candidates or may elect not to continue or renew development or commercialization programs based on preclinical studies or clinical trial results, changes in the collaborators’ strategic focus or available funding, or external factors such as an acquisition that diverts resources or creates competing priorities;

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·collaborators may delay clinical trials, provide insufficient funding for a clinical trial program, stop a clinical trial or abandon a product candidate, repeat or conduct new clinical trials or require a new formulation of a product candidate for clinical testing; 
·collaborators could independently develop, or develop with third parties, products that compete directly or indirectly with our product candidates if the collaborators believe that competitive products are more likely to be successfully developed or can be commercialized under terms that are more economically attractive than ours;
·collaborators with marketing and distribution rights to one or more products may not commit sufficient resources to the marketing and distribution of such product or products;
·collaborators may not properly maintain or defend our intellectual property rights or may use our proprietary information in such a way as to invite litigation that could jeopardize or invalidate our intellectual property or proprietary information or expose us to litigation or potential liability;
·collaborators may infringe the intellectual property rights of third parties, which may expose us to litigation and potential liability;
·disputes may arise between the collaborators and us that result in the delay or termination of the research, development or commercialization of our product candidates or that result in costly litigation or arbitration that diverts management attention and resources; and
·collaborations may be terminated and, if terminated, may result in a need for additional capital to pursue further development or commercialization of the applicable product candidates.

As a result of the foregoing, our current and any future collaboration agreements may not lead to development or commercialization of our product candidates in the most efficient manner or at all. Any failure to successfully develop or commercialize our product candidates pursuant to our current or any future collaboration agreements could have a material and adverse effect on our business, financial condition, results of operations and prospects.

Moreover, to the extent that any of our existing or future collaborators were to terminate a collaboration agreement, we may be forced to independently develop these product candidates, including funding preclinical studies or clinical trials, assuming marketing and distribution costs and defending intellectual property rights, or, in certain instances, abandon product candidates altogether, any of which could result in a change to our business plan and have a material adverse effect on our business, financial condition, results of operations and prospects.

We have relied and may continuein the future rely on third parties to conduct Investigator Sponsored Trials (“ISTs”) of our products, which is cost-effective for us but affords the investigators the ability to retain significant control over the design and conduct of the trials, as well as the use of the data generated from their efforts.

We have relied and may in the future rely on third parties to conduct and sponsor clinical trials relating to lenzilumab, our GM-CSF gene knockout platform and our other immunotherapy product candidates, iFab and HGEN005. Such ISTs may provide us with valuable clinical data that can inform our future development strategy in a cost-efficient manner, but we do not control the design or conduct of the ISTs, and it is possible that FDA or non-U.S. regulatory authorities will not view these ISTs as providing adequate support for future clinical trials, whether controlled by us or third parties, for any one or more reasons, including elements of the design or execution of the trials or safety concerns or other trial results.

These arrangements provide us limited information rights with respect to the ISTs, including access to and the ability to use and reference the data, including for our own regulatory filings, resulting from the ISTs. However, we would not have control over the timing and reporting of the data from ISTs, nor would we own the data from the ISTs. If we are unable to confirm or replicate the results from the ISTs or if negative results are obtained, we would likely be further delayed or prevented from advancing further clinical development. Further, if investigators or institutions breach their obligations with respect to the clinical development of our product candidates, or if the data proves to be inadequate compared to the first-hand knowledge, we might have gained had the ISTs been sponsored and conducted by us, then our ability to design and conduct any future clinical trials ourselves may be adversely affected.

If the third parties conducting our clinical trials do not conduct the trials in accordance with our agreements with them, our ability to pursue our clinical development programs could be delayed or unsuccessful and we may not be able to obtain regulatory approval for or commercialize our product candidates when expected or at all.

We do not have the ability to conduct all aspects of our preclinical testing or clinical trials ourselves. Therefore, the timing of the initiation and completion of these trials is uncertain and may occur on substantially different timing from our estimates. We also use CROs to conduct our clinical trials and rely on medical institutions, clinical investigators, CROs, and consultants to conduct our trials in accordance with our clinical protocols and regulatory requirements. Our CROs, investigators, and other third parties play a significant role in the conduct of these trials and subsequent collection and analysis of data.

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There is no guarantee that NIH, any CROs, investigators, or other third parties on which we rely for administration and conduct of our clinical trials will devote adequate time and resources to such trials or perform as contractually required. If any of these third parties fails to meet expected deadlines, fails to adhere to our clinical protocols, or otherwise performs in a substandard manner, our clinical trials may be extended, delayed, or terminated. If any of our clinical trial sites terminates for any reason, we may experience the loss of follow-up information on subjects enrolled in our ongoing clinical trials unless we are able to transfer those subjects to another qualified clinical trial site. In addition, principal investigators for our clinical trials may serve as scientific advisors or consultants to us from time-to-time and may receive cash or equity compensation in connection with such services. If these relationships and any related compensation result in perceived or actual conflicts of interest, the integrity of the data generated at the applicable clinical trial site may be jeopardized.

We may experience delays in commencing or conducting our clinical trials, in receiving data from third parties or in the continuation or completion of clinical testing, which could result in increased costs to us, and delay our ability to generate product candidate revenue.

revenue or, ultimately, render us unable to complete the development and commercialization of our product candidates.

We have product candidates in clinical development and preclinical development. To obtain marketing approval from regulatory authorities for the sale of any product candidate, we must complete preclinical development and then conduct extensive clinical trials to demonstrate the safety and efficacy of our product candidates in humans. Before we can initiate clinical trials in the United StatesU.S. for any new product candidates, we are required to submit the results of preclinical testing to FDA as part of an IND application, along with other information including information about product candidate chemistry, manufacturing, and controls and our proposed clinical trial protocol. For

In order to continue with our testing programs already underway, we are required to report or provide information to appropriate regulatory authorities, in orderand any failure to continue with our testing programs. If we are unable to make timely regulatory submissions for any of our programs, itsubmit such reports or information will delay our plans for our clinical trials. If those third parties conducting our trials do not make the required data available to us, we will likely have to identify and contract with another third party and/or develop all necessary preclinical and clinical data on our own, which will lead to significant delays and increase development costs of the product candidate.delays. In addition, FDA may require us to conduct additional preclinical testing for any product candidate before it allows us to initiate clinical testing under any IND application, which may lead to additional delays and increase the costs of our preclinical development.delays. Moreover, despite the presence of an active IND application for a product candidate, clinical trials can be delayed for a variety of reasons, including delays in:

identifying, recruiting, and enrolling qualified subjects to participate in a clinical trial;
identifying, recruiting, and training suitable clinical investigators;
reaching agreement on acceptable terms with prospective contract research organizations, or CROs, and trial sites, the terms of which can be subject to extensive negotiation, may be subject to modification from time to time, and may vary significantly among different CROs and trial sites;
obtaining and maintaining sufficient quantities of a product candidate for use in clinical trials, either as a result of transferring the manufacturing of a product candidate to another site or manufacturer, deferring ordering or production of product in order to conserve resources or mitigate risk, having product in inventory become no longer suitable for use in humans, or other reasons that reduce or delay availability of drug supply;
obtaining and maintaining institutional review board, or IRB, or ethics committee approval to conduct a clinical trial at an existing or prospective site;
retaining or replacing participants who have initiated a clinical trial but may withdraw due to adverse events from the therapy, insufficient efficacy, fatigue with the clinical trial process, or personal issues;
developing any companion diagnostic necessary to ensure that the study enrolls the target population; or
undergoing a clinical trial put on clinical hold at any time by FDA during product candidate development.
Once a clinical trial has begun, recruitment and enrollment of subjects may be slower than we anticipate. Numerous companies and institutions are conducting clinical studies in similar patient populations which can result in competition for qualified patients. In addition, clinical trials will take longer than we anticipate if we are required, or believe it is necessary, to enroll additional subjects.

·identifying, recruiting, enrolling and retaining or replacing qualified subjects to participate in a clinical trial, which may be slower than anticipated due to the number of companies and institutions competing for subjects in clinical studies with similar patient populations;
·identifying, recruiting, and training suitable clinical investigators;
·reaching agreements on acceptable terms with prospective CROs and trial sites, the terms of which can be subject to extensive negotiation, may be subject to modification from time-to-time, and may vary significantly among different CROs and trial sites;
·obtaining and maintaining sufficient quantities of a product candidate for use in clinical trials;
·obtaining and maintaining Institutional Review Board (“IRB”) or ethics committee approval to conduct a clinical trial at an existing or prospective site;
·developing any companion diagnostic necessary to ensure the study enrolls the target population;
·being required by FDA to add more patients or sites or to conduct additional trials; or
·FDA placing a clinical trial on hold.

Clinical trials may also be delayed as a result of ambiguous or negative interim results. Further, a clinical trial may be suspended or terminated by us, an IRB, an ethics committee, or a data safety monitoring committee overseeing the clinical trial, any of our clinical trial sites with respect to that site, or FDA or other regulatory authorities, due to a number ofseveral factors, including:

failure to conduct the clinical trial in accordance with regulatory requirements or our clinical protocols;
inspection of the clinical trial operations or clinical trial site by FDA or other regulatory authorities;
inability to provide timely supply of drug product;
including unforeseen safety issues, known safety issues that occur at a greater frequency or severity than we anticipate, or any determination that the clinical trial presents unacceptable health risks;risks, or
lack of adequate funding to continue the clinical trial.
Additionally, if any future development partners do not develop the licensed product candidates in the time and manner that we expect, or at all, the clinical development efforts related to these licensed product candidates could be delayed or terminated. In addition, our ability to enforce our partners’ obligations under any future collaboration efforts may be limited due to time and resource constraints, competing corporate priorities of our future partners, and other factors.
funding.

Any delays in the commencement of our clinical trials may delay or preclude our ability to further develop or pursue regulatory approval for our product candidates. Changes in U.S. and foreign regulatory requirements and guidance also may occur, and we may need to amend clinical trial protocols to reflect these changes. Amendments may require us to resubmit our clinical trial protocols to IRBs for re-examination, which may affect the costs, timing, and likelihood of a successful completion of a clinical trial.

If we are required to conduct additional clinical trials or other testing of our product candidates beyond those that we currently contemplate, if we are unable to successfully complete clinical trials of our product candidates or other testing, if the results of these trials or tests are not positive or do not meet the standard for acceptability by regulatory authorities or if there are safety concerns, we may:

·be delayed in obtaining marketing approval for our product candidates;
·not obtain marketing approval or EUA at all;

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·obtain approval for indications or patient populations that are not as broad as intended or desired;
·obtain approval with labeling that includes significant use or distribution restrictions or safety warnings;
·be subject to additional post-marketing testing requirements; or
·have the product removed from the market after obtaining marketing approval.

Our product development costs will also increase if we experience delays in testing or in obtaining marketing approvals. We do not know whether any of our preclinical studies or clinical trials will begin as planned, will need to be restructured or will be completed on schedule, or at all. We may also determine to change the design or protocol of one or more of our clinical trials, including to add additional arms or patient populations, which could result in increased costs and expenses and/or delays. If we or any future development partners experience delays in the completion of, or if we or any future development partners must terminate, any clinical trial of any product candidate, our ability to obtain regulatory approval for that product candidate will be delayed and the commercial prospects, if any, for the product candidate may suffer as a result. In addition, manySignificant preclinical study or clinical trial delays also could shorten any periods during which we may have the exclusive right to commercialize our product candidates or allow our competitors to bring products to market before we do and impair our ability to successfully commercialize our product candidates and may harm our business and results of these factors may also ultimately lead to the denial of regulatory approval of a product candidate.

operations.

Our product candidates are subject to extensive regulation, compliance with which is costly and time consuming, may cause unanticipated delays, or may prevent the receipt of the required approvals to commercialize our product candidates.

candidates, or may result in substantial harm to our business if we fail to comply with these requirements.

The clinical development, approval, manufacturing, labeling, storage, record-keeping, advertising, promotion, import, export, marketing, and distribution of our product candidates are subject to extensive regulation by FDA in the United StatesU.S. and by comparable authorities in foreign markets. In the United States,U.S., we are not permitted to market our product candidates until we receive regulatory approval or other authorization, such as EUA, from FDA. The process of obtaining regulatory approval is expensive, often takes many years, and can vary substantially based upon the type, complexity, and novelty of the products involved, as well as the target indications. Approval policies or regulations may change, and FDA has substantial discretion in the drug approval process, including the ability to delay, limit, or deny approval of a product candidate for many reasons. Despite the time and expense invested in clinical development of product candidates, regulatory approval is never guaranteed. FDA or other comparable foreign regulatory authorities can delay, limit, or deny approval of a product candidate for many reasons, including:

such authorities may disagree with the design or implementation of our or any future development partners’ clinical trials;
we or any future development partners may be unable to demonstrate to the satisfaction of FDA or other regulatory authorities that a product candidate is safe and effective for any indication;
such authorities may not accept clinical data from trials that are conducted at clinical facilities or in countries where the standard of care is potentially different from the United States;
the results of clinical trials may not demonstrate the safety or efficacy required by such authorities for approval;
we or any future development partners may be unable to demonstrate that a product candidate’s clinical and other benefits outweigh its safety risks;
such authorities may disagree with our interpretation of data from preclinical studies or clinical;
such authorities may find deficiencies in the manufacturing processes or facilities of third-party manufacturers with which we or any future development partners contract for clinical and commercial supplies; or
the approval policies or regulations of such authorities may significantly change in a manner rendering our or any future development partners’ clinical data insufficient for approval.

·such authorities may disagree with the design or implementation of our or any future development partners’ clinical trials;
·such authorities may not accept clinical data from trials that are conducted at clinical facilities or in countries where the standard of care is potentially different from the U.S.;
·the results of clinical trials may not demonstrate the safety or efficacy required by such authorities for approval;
·we or any future development partners may be unable to demonstrate that a product candidate’s clinical and other benefits outweigh its safety risks;
·such authorities may disagree with our interpretation of data from preclinical studies or clinical trials;
·such authorities may find deficiencies in the manufacturing processes or facilities of third-party manufacturers with which we or any future development partners contract for clinical and commercial supplies; or
·the approval policies or regulations of such authorities may significantly change in a manner rendering our or any future development partners’ clinical data insufficient for approval. 

With respect to foreign markets, approval procedures vary widely among countries and, in addition to the aforementioned risks, can involve additional product testing, administrative review periods, and agreements with pricing authorities. In addition, events raising questions about the safety of certain marketed pharmaceuticals may result in increased caution by FDA and comparable foreign regulatory authorities in reviewing new drugs based on safety, efficacy or other regulatory considerations and may result in significant delays in obtaining regulatory approvals. Any delay in obtaining, or inability to obtain, applicable regulatory approvals wouldmay delay or prevent us or any future development partners from commercializing our product candidates.

If we receive regulatory approval for our product candidates, we will be subject to ongoing FDA obligations and continued regulatory oversight and review, such as continued safety reporting requirements, and we may also be subject to additional FDA post-marketing obligations. If we are not able to maintain regulatory compliance, we may not be permitted to market our product candidates, may be subject to product recalls, import and export restrictions or seizures, and/or may be subject to civil and/or criminal penalties.

The results of preclinical studies and early clinical trials are not always predictive of future results. Any product candidate we or any future development partners advance into clinical trials may not have favorable results in later clinical trials, if any, or receive regulatory approval.

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Drug development has substantial inherent risk. We or any future development partners will be required to demonstrate through adequate and well-controlled clinical trials that our product candidates are effective, with a favorable benefit-risk profile, for use in their target populations for their intended indications before we can seek regulatory approvals for their commercial sale. Drug development is a long, expensive and uncertain process, and delay or failure can occur at any stage of development, including after commencement of any of our clinical trials. Success in early clinical trials does not mean that later clinical trials will be successful because product candidates in later-stage clinical trials may fail to demonstrate sufficient safety or efficacy despite having progressed through initial clinical testing. In addition, serious adverse or undesirable side effects may emerge or be identified during later stages of development that were not observed in earlier stages. Furthermore, our future trials will need to demonstrate sufficient safety and efficacy for approval by regulatory authorities in larger patient populations. Companies frequently suffer significant setbacks in advanced clinical trials, even after earlier clinical trials have shown promising results. In addition, only a small percentage of drugs under development result in the submission of a New Drug Application or Biologic License Application,an NDA or BLA to FDA, and even fewer are approved for commercialization.

We face risks associated with clinical operations abroad, which may adversely affect our financial condition and results of operations, and we may not be able to receive conditional marketing or other approvals for lenzilumab in COVID-19 patients in markets outside the U.S.

Partners are conducting or planning to conduct clinical trials involving lenzilumab in the UK, Korea and Australia, as well as potentially in other countries in patients with COVID-19 and other indications. In addition, we are working to seek CMA for lenzilumab in hospitalized COVID-19 patients in the European Union and the United Kingdom. We have not received any authorization or approval to sell lenzilumab in any country but would expect to commence commercial operations, through a partner or on our own, only after such authorization or approval were received. As with our development programs in the U.S., our product candidates must be approved for marketing and sale by regulatory authorities in each jurisdiction to which we may apply for approval and, once approved, are subject to extensive regulation by regulatory agencies in other countries. We anticipate that we may file for marketing approval in additional countries and for additional indications and products over the next several years. These and any future marketing applications we file may not be approved by the regulatory authorities on a timely basis, or at all. Even if marketing approval is granted for these products, there may be significant limitations on their use. We cannot state with certainty when or whether any of our product candidates under development will be approved by any foreign regulators or launched; whether we will be able to develop, license or acquire additional product candidates or products; or whether any products, once launched, will be commercially successful.

International operations involve risks that are different from those faced in the U.S. and would subject us to complex and frequently changing laws and regulations, including differing labor laws, such as the United Kingdom (“UK”) Modern Slavery Act. In addition, operations abroad are accompanied by certain financial, political, economic and other risks, including those listed below:

·Foreign Currency Exchange: Operations internationally may subject us to risks related to foreign currency exchange risks as we make payments, or incur obligations, denominated in foreign currencies. We cannot predict future fluctuations in the foreign currency exchange rates of the U.S. dollar. If the U.S. dollar appreciates significantly against certain currencies and our practices do not sufficiently offset the effects of such appreciation, our results of operations would be adversely affected, and our stock price may decline.
·Anti-Bribery: We are subject to the U.S. Foreign Corrupt Practices Act and similar worldwide anti-bribery laws that will govern our international operations with respect to payments to government officials. Our international operations would be heavily regulated and require significant interaction with foreign officials. In certain circumstances, strict compliance with anti-bribery laws may conflict with local customs and practices or may require us to interact with doctors and hospitals, some of which may be state controlled, in a manner that is different than local custom. In addition, despite our efforts, our policies and procedures may not protect us from reckless or criminal acts committed by persons who act on our behalf. Enforcement activities under anti-bribery laws could subject us to administrative and legal proceedings and actions, which could result in civil and criminal sanctions, including monetary penalties and exclusion from health care programs.

Other risks inherent in conducting foreign operations include:

·International operations, including any use of third-party manufacturers, distributors, CROs and collaboration arrangements outside the U.S., expose us to increased risk of theft of our intellectual property and other proprietary technology, particularly in jurisdictions with less robust intellectual property protections than the U.S., as well as restrictive government actions against our intellectual property and other foreign assets such as nationalization, expropriation or the imposition of compulsory licenses.
·We may be subject to protective economic policies taken by foreign governments, such as trade protection measures and import and export licensing requirements, which may result in the imposition of trade sanctions or similar restrictions by the U.S. or other governments.
·Our foreign operations, third-party manufacturers, CROs or strategic partners could be subject to business interruptions for which we or they may be uninsured or inadequately insured.
·Our operations may also be adversely affected if there is political instability or disruption in any other geographic region where we may have operations, which could impact our ability to do business in those areas.

If we were to encounter any of these risks, our foreign operations may be adversely affected, which could have an adverse effect on our overall business and results of operations.

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If we fail to attract and retain key management and clinical development personnel, or if the attention of such personnel is diverted, we may be unable to successfully manage our business and develop or commercialize our product candidates.

We will need to effectively manage our managerial, operational, financial, and other resources in order to successfully pursue our clinical development and commercialization efforts. As a company with a limited number of personnel, we are heavily affected by turnover and highly dependent on the expertise of the members of our senior management,management. If we are unable to provide competitive compensation to these employees, it may be difficult to retain them. For 2021, the Board of Directors froze the salary levels of all but one employee who was promoted and did not award any cash bonuses for 2021 performance, opting instead to grant options to employees to purchase shares of common stock in particularsatisfaction of amounts earned under the Company's 2021 annual incentive plan. There can be no assurance that these decisions will not have a negative impact on the retention of our Chief Executive Officer, Dr. Cameron Durrant.employees. Furthermore, we rely on third party consultants for a variety of services. We cannot predict the impact of the loss of such individuals or the loss of services of any of our other senior management, should they occur, or the difficulty in replacing such individuals. Such losses could delay or prevent the further development and potential commercialization of our product candidates and, if we are not successful in finding suitable replacements, could harm our business.

In addition, at the closing of the Restructuring Transactions, Dr. Durrant entered into a consulting agreement with the JV Entity controlled by Nomis Bay pursuant to which Dr. Durrant agreed, for a period of up to two years, to furnish information and provide assistance to the JV Entity in connection with its exploration of potential claims versus third parties relating to the Benz Assets. Dr. Durrant is only required to provide these services to the extent that he can do so without (x) in his good faith, reasonable determination, materially adversely affecting his other business or employment obligations or (y) breaching any contractual arrangement relating to his other business or employment obligations. Nevertheless, performance of these consulting obligations could divert his attention away from our business, which could impair our ability to successfully pursue our strategy and our drug development programs.
Any product candidate we or any future development partner may advance into clinical trials may cause unacceptable adverse events or have other properties that may delay or prevent its regulatory approval or commercialization or limit its commercial potential.
Unacceptable adverse events caused by any of our product candidates that we advance into clinical trials could cause us or regulatory authorities to interrupt, delay, or halt clinical trials and could result in the denial of regulatory approval by FDA or other regulatory authorities for any or all targeted indications and markets. This in turn could prevent us from completing development or commercializing the affected product candidate and generating revenue from its sale.
We have not yet successfully completed testing of any of our product candidates for the treatment of the indications for which we intend to seek approval in humans, and we currently do not know the extent of adverse events, if any, that will be observed in individuals who receive any of our product candidates. If any of our product candidates cause unacceptable adverse events in clinical trials, we may not be able to obtain regulatory approval or commercialize such product candidates.

If our competitors develop similar or comparable treatments for the target indications of our product candidates that are approved more quickly, marketed more successfully or are demonstrated to be safer or more effective than our product candidates, or if FDA approves generic or biosimilar competitors to our products post-approval, our commercial opportunity will be reduced or eliminated.

We compete in an industry characterized by rapidly advancing technologies, intense competition, a changing regulatory and legislative landscape and a strong emphasis on the benefits of intellectual property protection and regulatory exclusivities. Our competitors include pharmaceutical companies, other biotechnology companies, academic institutions, government agencies and other private and public research organizations. We compete with these parties in immunotherapy and oncology treatments and in recruiting highly qualified personnel. Our product candidates, if successfully developed and approved, may compete with established therapies, with new treatments that may be introduced by our competitors, including competitors relying to a large extent on our drug approvals under section 505(b)(2) of the FDCA or on our biologics approvals under section 351(k) of the Public Health Service Act, or with generic copies of our products approved by FDA under an abbreviated new drug application or ANDA,(“ANDA”), referencing our drug products. We believe that competitors are actively developing competing products to our product candidates. See “Competition” in Item 1 of this Annual Report“Item 1. Business—Competition” for a discussion of competition with respect to our current product candidates.

Many of our competitors and potential competitors have substantially greater scientific, research, and product development capabilities, as well as greater financial, marketing, sales and human resources capabilities than we do. In addition, many specialized biotechnology firms have formed collaborations with large, established companies to support the research, development and commercialization of products that may be competitive with ours. Accordingly, our competitors may be more successful with respect to their products than we may be in developing, commercializing, and achieving widespread market acceptance for our products. If a competitor obtains approval for an orphan drug that is the same drug or the same biologic as one of our candidates before we do, we will be blocked from obtaining FDA approval for seven years from the date of the competitor’s product, unless we can establish that our product is clinically superior to the previously-approved competitor’s product or we can meet another exception, such as by showing that the competitor has failed to provide an adequate supply of its product to patients after approval. In addition, our competitors’ products may be more effective or more effectively marketed and sold than any treatment we or our development partners may commercialize and may render our product candidates obsolete or non-competitive before we can recover the expenses related to developing and supporting the commercialization of any of our product candidates. Developments by competitors may render our product candidates obsolete or noncompetitive. After one of our product candidates is approved, FDA may also approve a generic version with the same dosage form, safety, strength, route of administration, quality, performance characteristics and intended use as our product. These generic equivalents would be less costly to bring to market and could generally be offered at lower prices, thereby limiting our ability to gain or retain market share.

The acquisition or licensing of pharmaceutical products is also very competitive, and a number of more established companies, which have acknowledged strategies to in-license or acquire products, may have competitive advantages as may other emerging companies taking similar or different approaches to product acquisitions. The more established companies may have a competitive advantage over us due to their size, cash flows, institutional experience and historical corporate reputation.

We are subject to a multitude of manufacturing risks, any of which could substantially increase our costs and limit supply of our products.

Weproducts and rely completely on third parties to manufacture drug product, which could adversely impact our business.

The process of manufacturing our products is complex, costly, highly regulated, and subject to several risks. As such, we have no present plan or intention of developing in-house manufacturing capabilities for nonclinical, clinical or commercial scale production, and are and will for the foreseeable future continue to be, wholly dependent on third party contract manufacturers for the timely supply of adequate quantities of our products which meet or exceed requisite quality and production standards for use in clinical and nonclinical studies. GivenOur dependence on CMOs increases our manufacturing risks, including the extensive risks, scope, complexity, cost, regulatory requirementspossible breach of the manufacturing agreement by the CMO, the possible cancellation, delay or modification of contracted manufacturing slots by the CMO, or the termination or nonrenewal of the agreement by the CMO at a time that is costly or inconvenient for us, and commitment of resources associated with developing the capabilitiescould adversely affect our ability to manufacture one or more ofdevelop and commercialize our products, we have no present plan or intention of developing in-house manufacturing capabilities for nonclinical, clinical or commercial scale production, beyond our current supervision and management of our third-party contract manufacturers.product candidates on a timely basis. In addition, in order to balance risk and conserve financial and human resources, we have and may continue from time to timetime-to-time to defer commitment to production of product, which could result in delays to the continued progress of our clinical and nonclinical testing.

In addition to the foregoing, the process of manufacturing our products is complex, highly regulated and subject to several risks, including but not limited to the following:
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·We, and our contract manufacturers, must comply with FDA’s current Good Manufacturing Practice, or cGMP, regulations and guidance. We, and our contract manufacturers, may encounter difficulties in achieving quality control and quality assurance and may experience shortages in qualified personnel. We, and our contract manufacturers, are subject to inspections by FDA and comparable agencies in other jurisdictions to confirm compliance with applicable regulatory requirements. Any failure to follow cGMP or other regulatory requirements or any delay, interruption or other issues that arise in the manufacture, fill-finish, packaging, or storageTable of our products as a result of a failure of our facilities or the facilities or operations of third parties to comply with regulatory requirements, or a failure to pass any regulatory authority inspection, could significantly impair our ability to develop and commercialize our products, including leading to significant delays in the availability of products for our clinical studies or the termination or hold on a clinical study, or the delay or prevention of a filing or approval of marketing applications for our product candidates. Significant noncompliance could also result in the imposition of sanctions, including injunctions, civil penalties, failure of regulatory authorities to grant marketing approvals for our product candidates, delays, suspension or withdrawal of approvals, license revocation, seizures or recalls of products, operating restrictions, adverse publicity, and criminal prosecutions, any of which could damage our reputation. If we are not able to maintain regulatory compliance, we may not be permitted to market our products and/or may be subject to product recalls, seizures, injunctions, or criminal prosecution.  Any adverse developments affecting manufacturing operations for our products may result in shipment delays, inventory shortages, lot failures, product withdrawals or recalls, or other interruptions in the supply of our products. We may also have to take inventory write-offs and incur other charges and expenses for products that fail to meet specifications, undertake costly remediation efforts or seek more costly manufacturing alternatives.Contents
·The manufacturing facilities in which our products are made could be adversely affected by equipment failures, plant closures, capacity constraints, competing customer priorities or changes in corporate strategy or priorities, process changes or failures, changes in business models or operations, materials or labor shortages, natural disasters, power failures and numerous other factors.
·We are wholly dependent upon third party CMOs for the timely supply of adequate quantities of requisite quality product for our nonclinical, clinical and, if approved by regulatory authorities, commercial scale production.
·The process of manufacturing biologics is extremely susceptible to product loss due to contamination, equipment failure or improper installation or operation of equipment, or vendor or operator error. Even minor deviations from normal manufacturing processes could result in reduced production yields, product defects and other supply disruptions. If microbial, viral or other contaminations are discovered in our products or in the manufacturing facilities in which our products are made, such manufacturing facilities may need to be closed for an extended period of time to investigate and remedy the contamination.
product approval, the regulatory authority may suspend the manufacturing operations. Suppliers of key components and materials must also be named in the EUA, BLA or other marketing authorization application filed with the regulatory authority for any product candidate for which we are seeking marketing approval, and significant delays can occur if the qualification of a new supplier is required. Foreign agencies have not inspected the Catalent site in Madison, WI. This site is the primary source of BDS for lenzilumab.

We, and our CMOs, may encounter difficulties in achieving quality control and quality assurance and may experience shortages in qualified personnel. Any failure to follow cGMP or other regulatory requirements or any delay, interruption or other issues that arise in the manufacture, fill-finish, packaging, or storage of our products as a result of a failure of our or our CMOs’ facilities, could significantly impair our ability to develop and commercialize our products, including leading to significant delays in the availability of products for our clinical studies or the termination or hold of a clinical study, or the delay or prevention of a filing or approval of marketing applications for our product candidates. Further, we may have to pay the costs of manufacturing any batch produced by a CMO that fails to pass quality inspection or meet regulatory approval.

Significant noncompliance with manufacturing regulations could also result in the imposition of sanctions, including injunctions, civil penalties, failure of regulatory authorities to grant marketing approvals for our product candidates, delays, suspension or withdrawal of approvals, license revocation, seizures or recalls of products, operating restrictions, adverse publicity, and criminal prosecutions, any of which could damage our reputation. If we are not able to maintain regulatory compliance, we may not be permitted to market our products and/or may be subject to product recalls, seizures, injunctions, or criminal prosecution. Any adverse developments affecting manufacturing operations for our products may result in shipment delays, inventory shortages, lot failures, product withdrawals or recalls, or other interruptions in the supply of our products. Once our product candidates are approved, we may also have to take inventory write-offs and incur other charges and expenses for products that fail to meet specifications, undertake costly remediation efforts or seek more costly manufacturing alternatives.

As is the case with MHRA, we are required to provide information from the PPQ runs at certain CMOs. It is our belief that lenzilumab manufactured at CMOs that have not completed PPQ will not be available for commercial sale in the UK. Historically, FDA provided guidance that we would not have to complete PPQ at all of our CMOs and that we could rely on compatibility reports to sell product under EUA. We believe EMA may require PPQ information similar to the requirements from MHRA. We do not know if FDA’s position on the PPQ requirement has changed. If FDA requires similar PPQ information, our ability to commercialize a significant amount of the lenzilumab produced to date will be limited.

In addition, the manufacturing facilities in which our products are made could be adversely affected by equipment failures, plant closures, capacity constraints, competing customer priorities or changes in corporate strategy or priorities, process changes or failures, changes in business models or operations, materials or labor shortages, natural disasters, power failures and numerous other factors.

Our third-party manufacturers are independent entities subject to their own unique operational and financial risks that are out of our control. Additionally, our third-party manufacturers may only be able to produce some of our products at one or a limited number of facilities and, therefore, we have limited manufacturing capacity for certain products, and we may not be able to locate additional or replacement facilities on a reasonable basis or at all. Our sales of such products could also be adversely impacted by our reliance on such limited number of facilities. To the extent these risks materialize and affect their performance obligations to us, our financial results may be adversely affected.

In addition, we, our third-party suppliers and our CMOs have experienced disruptions in supply of product candidates and/or procuring items that are essential for our research, development and manufacturing activities, including raw materials and components used in the manufacturing of our product candidates for which there have been shortages because of ongoing efforts to address the COVID-19 pandemic. These delays have impacted our overall manufacturing supply chain operations to date, and while we continue to explore back up or alternative sources of supply, any future disruption in the supply chain from the COVID-19 outbreak, or any continued outbreak, could have a material adverse impact on our clinical trial plans, manufacturing activities and business operations.

If any product candidate that we successfully develop does not achieve broad market acceptance among physicians, patients, healthcare payers and the medical community, the revenue that it generates may be limited.

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Even if our product candidates receive regulatory approval, they may not gain market acceptance among physicians, patients, healthcare payers, and the medical community. Coverage and reimbursement of our product candidates by third-party payers, including government payers, generally is also necessary for commercial success. The degree of market acceptance of any approved product candidates will depend on a number ofseveral factors, including:

the efficacy and safety as demonstrated in clinical trials;
the clinical indications for which the product candidate is approved;
acceptance by physicians, major operators of hospitals and clinics, and patients of the product candidate as a safe and effective treatment;
the potential and perceived advantages of product candidates over alternative treatments;
the safety of product candidates seen in a broader patient group, including its use outside the approved indications;
the cost of treatment in relation to alternative treatments;
the availability of adequate reimbursement and pricing by third parties and government authorities;
relative convenience and ease of administration;
the prevalence and severity of adverse events;
the effectiveness of our sales and marketing efforts; and
unfavorable publicity relating to the product candidate.

·the efficacy and safety as demonstrated in clinical trials;
·the clinical indications for which the product candidate is approved;
·acceptance by physicians, major operators of hospitals and clinics, and patients of the product candidate as a safe and effective treatment;
·the potential and perceived advantages of product candidates over alternative treatments;
·the safety of product candidates seen in a broader patient group, including its use outside the approved indications;
·the cost of treatment in relation to alternative treatments;
·the availability of adequate reimbursement and pricing by payers;
·relative convenience and ease of administration;
·the prevalence and severity of adverse events;
·the effectiveness of our sales and marketing efforts; and
·the ability to manage any unfavorable publicity relating to the product candidate.

If any product candidate is approved but does not achieve an adequate level of acceptance by physicians, hospitals, healthcare payers, and patients, we may not generate sufficient revenue from that product candidate and may not become or remain profitable.

commercially attractive as a standalone indication for that product.

Reimbursement may be limited or unavailable in certain market segments for our product candidates, which could make it difficult for us to sell our product candidates profitably.

Market acceptance and sales of our product candidates will depend significantly on the availability of adequate insurance coverage and reimbursement from third-party payers for any of our product candidates and may be affected by existing and future health care reform measures. Government authorities and third-party payers, such as private health insurers and health maintenance organizations, decide which drugs they will pay for and establish reimbursement levels. Reimbursement by a third-party payer may depend upon a number of factors including the third-party payer’s determination that use of a product candidate is:

a covered benefit under its health plan;
safe, effective, and medically necessary;
appropriate for the specific patient;
cost-effective; and
neither experimental nor investigational.

·a covered benefit under its health plan;
·safe, effective, and medically necessary;
·appropriate for the specific patient;
·cost-effective; and
·neither experimental nor investigational.

Obtaining coverage and reimbursement approval for a product candidate from a government or other third-party payer is a time-consuming and costly process that could require us to provide supporting scientific, clinical, and cost effectiveness data for the use of our product candidates to the payer. We may not be able to provide data sufficient to gain acceptance with respect to coverage and reimbursement. We cannot be sure that coverage or adequate reimbursement will be available for any of our product candidates. Also, we cannot be sure that reimbursement amounts will not reduce the demand for, or the price of, our product candidates. If reimbursement is not available or is available only to limited levels or with restrictions, we may not be able to commercialize certain of our product candidates profitably, or at all, even if approved.

In the United StatesU.S. and in certain foreign jurisdictions, there have been a number of legislative and regulatory changes to the health care system that could affect our ability to sell our product candidates profitably. In particular, the Medicare Modernization Act of 2003 revised the payment methods for many product candidates under Medicare. This has resulted in lower rates of reimbursement. There have been numerous other federal and state initiatives designed to reduce payment for pharmaceuticals.

As a result of legislative proposals and the trend toward managed health care in the United States,U.S., third-party payers are increasingly attempting to contain health care costs by limiting both coverage and the level of reimbursement of new drugs. They may also refuse to provide coverage of approved product candidates for medical indications other than those for which FDA has granted market approvals. As a result, significant uncertainty exists as to whether and how much third-party payers will reimburse patients for their use of newly approved drugs, which in turn will put pressure on the pricing of drugs. We could be subject to pricing pressures in connection with the sale of our product candidates due to the trend toward managed health care, the increasing influence of health maintenance organizations, and additional legislative proposals as well as country, regional, or local healthcare budget limitations.

If we are unable to establish salestreatment have been raised in Europe and marketing capabilities or fail to enter into agreements with third parties to market and sell any product candidates we may successfully develop, we may not be able to effectively market and sell any such product candidates.
We do not currently have the sales and marketing infrastructure in place that would be necessary to sell and market products. As our drug candidates progress, while we may build the infrastructure that would be needed to successfully market and sell any successful drug candidate, we currently anticipate seeking strategic alliances and partnerships with third parties, particularly for any drug candidates that we determine would require larger sales efforts.  The establishment of a sales and marketing operation can be expensive and time consuming and could delay any product candidate launch.
Governments may impose price controls, which may adversely affect our future profitability.
We intend to seek approval to market our future product candidates in the United States and potentially in foreign jurisdictions. If we obtain approval in one or more foreign jurisdictions, we will be subject to rules and regulations in those jurisdictions relating to our product candidates. In some foreign countries, particularly in the European Union, the pricing of prescription pharmaceuticals and biologics is subject to governmental control. In these countries, pricing negotiations with governmental authorities can take considerable time after the receipt of marketing approval for a product candidate. If reimbursement of our future products is unavailable or limited in scope or amount, or if pricing is set at unsatisfactory levels, we may be unable to achieve or sustain profitability.Kingdom.

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We face potential product liability exposure and, if successful claims are brought against us, we may incur substantial liability for a product candidate and may have to limit its commercialization.

The use of our product candidates in clinical trials and the sale of any product candidates for which we may obtain marketing approval expose us to the risk of product liability claims. Product liability claims may be brought against us or any future development partners by participants enrolled in our clinical trials, patients, health care providers, or others using, administering, or selling our product candidates. If we cannot successfully defend ourselves against any such claims, or have insufficient insurance protection, we would incur substantial liabilities. Regardless of merit or eventual outcome, product liability claims may result in:

withdrawal of clinical trial participants;
termination of clinical trial sites or entire trial programs;
costs of related litigation;
substantial monetary awards to trial participants or other claimants;
decreased demand for our product candidates and loss of revenue;
impairment of our business reputation;
diversion of management and scientific resources from our business operations; and
the inability to commercialize our product candidates.

·withdrawal of clinical trial participants;
·termination of clinical trial sites or entire trial programs;
·costs of related litigation;
·substantial monetary awards to trial participants or other claimants;
·decreased demand for our product candidates and loss of revenue;
·impairment of our business reputation;
·diversion of management and scientific resources from our business operations; and
·the inability to commercialize our product candidates.

We have obtained limited product liability insurance coverage for our clinical trials domestically and in selected foreign countries where we are conducting clinical trials. As such, our insurance coverage may not reimburse us or may not be sufficient to reimburse us for anyall expenses or losses we may suffer. Moreover, insurance coverage is becoming increasingly expensive, and, in the future, we may not be able to maintain insurance coverage at a reasonable cost or in sufficient amounts to protect us against losses due to product liability. We intend to expand our insurance coverage for product candidates to include the sale of commercial products if we obtain marketing approval for our product candidates in development; however, we may be unable to obtain commercially reasonable product liability insurance for any product candidates approved for marketing. Large judgments have been awarded in class action lawsuits based on drugs that had unanticipated side effects. A successful product liability claim or series of claims brought against us, particularly if judgments exceed our insurance coverage, could decrease our working capital and adversely affect our business.

Our insurance policies are expensive and protect us only from some business risks, which leaves us exposed to significant uninsured liabilities.
We do not carry insurance for all categories of risk that our business may encounter. Some of the policies we currently maintain include general liability, employment practices liability, property, auto, workers’ compensation, products liability, and directors’ and officers’ insurance. We do not know, however, if we will be able to maintain existing insurance with adequate levels of coverage. Our recent history may result in an increase in premium costs or otherwise affect the terms of coverage available to us. Any significant, uninsured liability may require us to pay substantial amounts, which would adversely affect our working capital and results of operations.

Our employees and consultants may engage in misconduct or other improper activities, including noncompliance with regulatory standards, which could have a material adverse effect on our business.

We are exposed to the risk of employee fraud or other misconduct. Misconduct by employees or consultants could include intentional failures to comply with FDA regulations or similar regulations of comparable foreign regulatory authorities, failure to provide accurate information to FDA or comparable foreign regulatory authorities, failure to comply with manufacturing standards, failure to comply with federal and state healthcare fraud and abuse laws and regulations and similar laws and regulations established and enforced by comparable foreign regulatory authorities, failure to report financial information or data accurately, violations of anti-bribery laws, or failure to disclose unauthorized activities to us. In particular, sales, marketing and business arrangements in the healthcare industry are subject to extensive laws and regulations intended to prevent fraud, kickbacks, self-dealing and other abusive practices. These laws and regulations may restrict or prohibit a wide range of pricing, discounting, marketing and promotion, sales commission, customer incentive programs and other business arrangements. Employee or consultant misconduct could also involve the improper use of confidential information obtained in the course of our business, which could result in civil or criminal legal actions, regulatory sanctions, or serious harm to our reputation. We have adopted a Code of Business Conduct and Ethics and other corporate policies, but it is not always possible to identify and deter employee misconduct, and the precautions we take to detect and prevent this activity may not be effective in controlling unknown or unmanaged risks or losses or in protecting us from governmental investigations or other actions or lawsuits stemming from a failure to be in compliance with such laws or regulations. If any such actions are instituted against us, and we are not successful in defending ourselves or asserting our rights, those actions could have a significant impact on our business and results of operations, including the imposition of significant fines or other sanctions.

We may encounter difficulties in managing our growth and expanding our operations successfully.

successfully.

As we seek to advance our product candidates through clinical trials, we will need to expand our development, regulatory, manufacturing, marketing, and sales capabilities, and contract with third parties to provide these capabilities for us. As our operations expand, we expect that we will need to manage additional relationships with various development partners, suppliers, and other third parties. Future growth will impose significant added responsibilities on members of management. Our future financial performance and our ability to commercialize our product candidates and to compete effectively will depend in part on our ability to manage any future growth effectively. To that end, we must be able to manage our development efforts and clinical trials effectively. We may not be able to accomplish these tasks and our failure to accomplish any of them could prevent us from successfully growing our company.

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We and any current or future development partners, third-party manufacturers and suppliers may use hazardous materials, and any claims relating to improper handling, storage, or disposal of these materials could be time consuming or costly.

We and any current or future development partners, third-party manufacturers and suppliers may use hazardous materials, including chemicals and biological agents and compounds that could be dangerous to human health and safety or the environment. Our operations and the operations of our development partner,partners, third-party manufacturers and suppliers also produce hazardous waste products. Federal, state, and local laws and regulations govern the use, generation, manufacture, storage, handling, and disposal of these materials and wastes. Compliance with applicable environmental laws and regulations may be expensive and current or future environmental laws and regulations may impair our product development efforts. In addition, we cannot entirely eliminate the risk of accidental injury or contamination from these materials or wastes. We do not carry specific biological or hazardous waste insurance coverage and our property, casualty, and general liability insurance policies specifically exclude coverage for damages and fines arising from biological or hazardous waste exposure or contamination. Accordingly, in the event of contamination or injury we could be held liable for damages or be penalized with fines in an amount exceeding our resources, and our clinical trials or regulatory approvals could be suspended.

Our internal computer systems,

Legislative or those of our future development partners, third-party clinical research organizations or other contractors or consultants,regulatory healthcare reforms in the U.S. may fail or suffer security breaches, which could result in a material disruption of our product development programs.

Despite the implementation of security measures, our internal computer systemsmake it more difficult and those of our development partners, third-party clinical research organizations and other contractors and consultants are vulnerablecostly for us to damage from computer viruses, unauthorized access, natural disasters, terrorism, war, and telecommunication and electrical failures. While we have not experienced any such system failure, accident, or security breach to date, if such an event were to occur and cause interruptions in our operations, it could result in a material disruption of our programs. For example, the loss of clinical trial data for anyobtain regulatory approval of our product candidates and to produce, market, and distribute our products after approval is obtained.

From time-to-time, legislation is drafted and introduced in Congress that could result in delays in oursignificantly change the statutory provisions governing the regulatory approval, effortsmanufacture, and marketing of regulated products or the reimbursement thereof. In addition, FDA regulations and guidance are often revised or reinterpreted by FDA in ways that may significantly increaseaffect our business and our products. Any new regulations or revisions or reinterpretations of existing regulations may impose additional costs to recover or reproduce the data. To the extent that any disruption or security breach results in a losslengthen review times of or damage to our data or applications or other data or applications relating to our technology orcurrent product candidates or inappropriate disclosure of confidential or proprietary information, we could incur liabilities and the further development of ourany future product candidates could be delayed.

Healthcare reform measures, when implemented, could hinder or prevent our commercial success.
candidates. There have been, and likely will continue to be, legislative and regulatory proposals at the federal and state levels directed at broadening the availability of health care and containing or lowering the overall cost of health care. We cannot predict the initiatives that may be adopted in the future. The continuing efforts of the government, insurance companies, managed care organizations, and other payers of healthcare services to contain or reduce costs of health care may adversely affect:

·the demand for any drug products for which we may obtain regulatory approval;
·our ability to set a price that we believe is fair for our product candidates;
·our ability to gain reimbursement at commercially acceptable levels;
·our ability to generate revenue and achieve or maintain profitability;
·the level of taxes that we are required to pay; and
·the availability of capital.

In addition, such changes could, among other things, require:

·changes to manufacturing methods;
·additional studies, including clinical studies;
·recall, replacement, or discontinuance of one or more of our products; and
·additional record-keeping.

Each of these would likely entail substantial time and cost and could materially harm our business and our financial results. In addition, delays in receipt of or failure to receive regulatory approvals for any drugfuture products for which we may obtain regulatory approval;

would harm our ability to set a price that we believe is fair for our product candidates;
our ability to generate revenuebusiness, financial condition, and achieve or maintain profitability;
the levelresults of taxes that we are required to pay; and
the availability of capital.
operations.

We and any of our future development partners will be required to report to regulatory authorities if any of our approved products cause or contribute to adverse medical events, and any failure to do so would result in sanctions that would materially harm our business.

If we and any future development partners are successful in commercializing our products, FDA and foreign regulatory authorities would require that we and any future development partners report certain information about adverse medical events if those products may have caused or contributed to those adverse events. The timing of our obligation to report would be triggered by the date we become aware of the adverse event as well as the nature of the event. We and any future development partners may fail to report adverse events we become aware of within the prescribed timeframe. We and any future development partners may also fail to appreciate that we have become aware of a reportable adverse event, especially if it is not reported to us as an adverse event or if it is an adverse event that is unexpected or removed in time from the use of our products. If we and any future development partners fail to comply with our reporting obligations, FDA or a foreign regulatory authority could take action including criminal prosecution, the imposition of civil monetary penalties, seizure of our products, or delay in approval or clearance of future products.

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Our product candidates for which we intend to seek approval as biologic products may face competition sooner than anticipated.

With the enactment of the Biologics Price Competition and Innovation Act of 2009, or the BPCIA, as part of the Affordable Care Act, an abbreviated pathway for the approval of biosimilar and interchangeable biological products was created. The abbreviated regulatory pathway establishes legal authority for FDA to review and approve biosimilar biologics, including the possible designation of a biosimilar as ‘‘interchangeable’’ based on its similarity to an existing brand product. Under the BPCIA, an application for a biosimilar product cannot be approved by FDA until 12 years after the original branded product was approved under a BLA. The law is complex and is still being interpreted and implemented by FDA. As a result, its ultimate impact, implementation, and meaning are subject to uncertainty. While it is uncertain when such processes intended to implement BPCIA may be fully adopted by FDA, any such processes could have a material adverse effect on the future commercial prospects for our biological products.

We believe that any of our product candidates, such as lenzilumab, iFab and/or HGEN005, if approved as biological products under a BLA, should qualify for the 12-year period of exclusivity. However, there is a risk that FDA will not consider our product candidates to be reference products for competing products, potentially creating the opportunity for biosimilar competition sooner than anticipated. Moreover, the extent to which a biosimilar, once approved, will be substituted for any one of our reference products in a way that is similar to traditional generic substitution for non-biological products is not yet clear, and will depend on a number of marketplace and regulatory factors that are still developing. Finally, there is a risk that the 12-year exclusivity period could be reduced which could negatively affect our products.

In addition, foreign regulatory authorities may also provide for exclusivity periods for approved biological products. For example, biological products in Europe may be eligible for a 10-year period of exclusivity. However, biosimilar products have been approved under a sub-pathway of the centralized procedure since 2006. The pathway allows sponsors of a biosimilar product to seek and obtain regulatory approval based in part on the clinical trial data of an originator product to which the biosimilar product has been demonstrated to be ‘‘similar.’’ In many cases, this allows biosimilar products to be brought to market without conducting the full suite of clinical trials typically required of originators. It is unclear whether we and ourany future development partnerpartners would face competition to our products in European markets sooner than anticipated.

We may in the future be subject to various U.S. federal and state laws pertaining to health care fraud and abuse, including anti-kickback, self-referral, false claims and fraud laws, and any violations by us of such laws could result in fines or other penalties.

If one or more of our product candidates is approved, we will likely be subject to the various U.S. federal and state laws intended to prevent health care fraud and abuse. The federal anti-kickback statute prohibits the offer, receipt, or payment of remuneration in exchange for or to induce the referral of patients or the use of products or services that would be paid for in whole or part by Medicare, Medicaid, or other federal health care programs. Remuneration has been broadly defined to include anything of value, including cash, improper discounts, and free or reduced pricereduced-price items and services. Many states have similar laws that apply to their state health care programs as well as private payers. Violations of the anti-kickback laws can result in exclusion from federal health care programs and substantial civil and criminal penalties.

The False Claims Act imposes liability on persons who, among other things, present or cause to be presented false or fraudulent claims for payment by a federal health care program. The False Claims Act has been used to prosecute persons submitting claims for payment that are inaccurate or fraudulent, that are for services not provided as claimed, or for services that are not medically necessary. The False Claims Act includes a whistleblower provision that allows individuals to bring actions on behalf of the federal government and share a portion of the recovery of successful claims. If our marketing or other arrangements were determined to violate the False Claims Act or anti-kickback or related laws, then our revenue could be adversely affected, which would likely harm our business, financial condition, and results of operations.

State and federal authorities have aggressively targeted medical technology companies for alleged violations of these anti-fraud statutes, based on improper research or consulting contracts with doctors, certain marketing arrangements that rely on volume-based pricing, off-label marketing schemes, and other improper promotional practices. Companies targeted in such prosecutions have paid substantial fines in the hundreds of millions of dollars or more, have been forced to implement extensive corrective action plans or Corporate Integrity Agreements,corporate integrity agreements, and have often become subject to consent decrees severely restricting the manner in which they conduct their business. If we become the target of such an investigation or prosecution based on our contractual relationships with providers or institutions, or our marketing and promotional practices, we could face similar sanctions, which would materially harm our business.

Also,

Even if regulatory authorization or approval were received for lenzilumab or any other product candidate, the Foreign Corrupt Practices Act and similar worldwide anti-bribery laws generally prohibit companies and their intermediaries from making improper payments to non-U.S. officials forlater discovery of previously unknown problems associated with the purposeuse of obtaininglenzilumab or retaining business. We cannot assure you that our internal control policies and procedures will protect us from reckless or negligent acts committed by our employees, future distributors, partners, collaborators or agents. Violations of these laws, or allegations of such violations, couldother product may result in fines, penalties,restrictions, including withdrawal of the product from the market, and lead to significant liabilities and reputational damage.

Serious adverse or prosecutionundesirable side effects may emerge or be identified during later stages of development of our products that were not observed in earlier stages. If our product candidates, either alone or in combination with other therapeutics, are associated with serious adverse events or undesirable side effects or unacceptable drug interactions in clinical trials or have characteristics that are unexpected in clinical trials or preclinical testing, we may need to abandon their development or limit development to more narrow uses or subpopulations in which the serious adverse events, undesirable side effects or other characteristics are less prevalent, less severe or more acceptable from a risk-benefit perspective. In pharmaceutical development, many compounds that initially show promise in early-stage or clinical testing are later found to cause side effects that prevent further development of the compound. In addition, if third parties manufacture or use our product candidates without our permission, and generate adverse events or unacceptable side effects, this could also have a negativean adverse impact on our business, results of operations and reputation.development efforts.

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Legislative or regulatory healthcare reforms in the United States may make it more difficult and costly for us to obtain regulatory approval

Unacceptable adverse events caused by any of our product candidates that we advance into clinical trials could cause us or regulatory authorities to interrupt, delay, or halt clinical trials and to produce, market, and distribute our products after approval is obtained.

From time to time, legislation is drafted and introducedcould result in Congress that could significantly change the statutory provisions governing thedenial of regulatory approval manufacture, and marketing of regulated products orby the reimbursement thereof. In addition, FDA regulations and guidance are often revised or reinterpreted by FDA in ways that may significantly affect our business and our products. Any new regulations or revisions or reinterpretations of existing regulations may impose additional costs or lengthen review times of our current product candidates or any future product candidates. We cannot determine what effect changes in regulations, statutes, legal interpretation or policies, when and if promulgated, enacted or adopted may have on our business in the future. Such changes could, among other things, require:
changes to manufacturing methods;
additional studies, including clinical studies;
recall, replacement, or discontinuance of one or more of our products; and
additional record-keeping.
Each of these would likely entail substantial time and cost and could materially harm our business and our financial results. In addition, delays in receipt of or failure to receiveapplicable regulatory approvalsauthorities for any future products would harm our business, financial condition,or all targeted indications and resultsmarkets. This in turn could prevent us from completing development or commercializing the affected product candidate and generating revenue from its sale. We have not yet successfully completed testing of operations.
Even if we are able to obtain regulatory approval forany of our product candidates for the treatment of the indications for which we intend to seek approval in humans, and we currently do not know the extent of adverse events, if any, that will continue to be subject to ongoing and extensive regulatory requirements, and our failure to comply with these requirements could substantially harm our business.
If weobserved in individuals who receive regulatory approval forany of our product candidates, we will be subject to ongoing FDA obligations and continued regulatory oversight and review, such as continued safety reporting requirements, andcandidates. Even if lenzilumab or any other products are approved, if previously unknown problems with the product or its manufacture are subsequently discovered, we may also be subject to additional FDA post-marketing obligations. If we are not able to maintain regulatory compliance, we may not be permitted to market ourrestricted or prohibited from marketing or manufacturing such product candidates and/or may be subject to product recalls or seizures.
If FDA approves any ofsubstantial liabilities, which may adversely affect our product candidates, the labeling, manufacturing, packaging, storage, distribution, export, adverse event reporting, storage, advertising, promotionability to generate revenue and record-keeping for our products will be subject to extensive regulatory requirements. Violations of these regulatory requirements or the subsequent discovery of previously unknown problems with the products, including adverse events of unanticipated severity or frequency, may result in:
the issuance of warning or untitled letters;
requirements to conduct post-marking clinical trials;
restrictions on the marketing and distribution of the product, including potential withdrawal of the product from the market;
suspension of ongoing clinical trials;
the issuance of product recalls, import and export restrictions, seizures, and detentions; and
the issuance of injunctions, or imposition of other civil and/or criminal penalties.
financial condition.

Our ability to utilize our net operating loss carryforwards and certain other tax attributes may be limited.

subject to certain limitations.

We have incurred substantial losses during our history and do not expect to become profitable in the foreseeable future and may never achieve profitability. To the extent that we continue to generate taxable losses, unused losses will carry forward to offset future taxable income, if any, until such unused losses expire. We may be unable to use these losses to offset income before such unused losses expire. UnderThe Tax Cuts and Jobs Act, enacted in 2017, limited the use of net operating loss carryforwards for periods beginning after 2017 to eighty percent of taxable income in the period to which the losses were carried. However, this limitation on the use of the carryforwards was eliminated by the Coronavirus Aid, Relief and Economic Security Act (the “CARES” Act) for tax years beginning before January 1, 2021. In addition, Section 382 of the Internal Revenue Code of 1986, as amended, may limit the utilization of net operating loss carryforwards. Under Section 382, if a corporation undergoes an ‘‘ownership change’’ (generally defined as a greater than 50% change (by value) in its equity ownership over a three-year period), the corporation’s ability to use its pre-change net operating loss carryforwards and other pre-change tax attributes to offset its post-change income may be limited. We have recently and in the past experienced ownership changes that have resulted in limitations on the use of a portion of our net operating loss carryforwards. On February 27, 2018, upon the closing of the Restructuring Transactions, we experienced an ownership change that may result in limitations on the use of a portion of our net operating losses.  If we experience further ownership changes our ability to utilize our net operating loss carryforwards could be further limited.

Risks Related to Our Bankruptcy

Despite having emerged from bankruptcy, we cannot be certain that the residual effects of the bankruptcy proceedings will not adversely affect our operations going forward.

Because of the residual risks and uncertainties associated with Chapter 11 bankruptcy proceedings, the ultimate impact of events that occurred in connection with, or that may occur subsequent to, these proceedings will have on our reputation, business, financial condition and results of operations cannot be accurately predicted or quantified. Due to uncertainties, many risks exist, including the following:

key business partners could terminate their relationships or require financial assurances or enhanced performance;
the ability to renew existing contracts and negotiate favorable terms from suppliers, partners and others may be adversely affected;
the ability to attract, motivate and/or retain key executives and employees may be adversely affected;
employees may be distracted from performance of their duties or more easily attracted to other employment opportunities; and
other costs of operations, including obtaining insurance, could be more expensive.
The occurrence of one or more of these events, or others related to our emergence from bankruptcy, could have a material and adverse effect on our operations, financial condition and reputation. We cannot assure you that having been subject to bankruptcy proceedings will not adversely affect our operations in the future.
Allowance of claims by the Bankruptcy Court could materially exceed our estimated liability and adversely affect our financial condition.
The reconciliation of certain proofs of claim filed against us in the Bankruptcy Case is ongoing.  As of December 31, 2017, approximately $0.5 million in claims remain subject to review and reconciliation. As of December 31, 2017, we have recorded $0.06 million related to these claims in Accounts payable and Notes payable to vendors, which represents management’s best estimate of claims to be allowed by the Bankruptcy Court.
Despite management’s best estimate of claims to be allowed by the Bankruptcy Court, we may be ultimately unsuccessful in our attempt to have certain proofs of claim that we believe are subject to objection or otherwise improperly filed to be disallowed, reduced or reclassified by the Bankruptcy Court.  The allowance of claims by the Bankruptcy Court could materially exceed our estimated liability and adversely affect our business, financial condition, and results of operations. In addition, we may identify additional liabilities during this process that will need to be recorded or reclassified to liabilities subject to compromise. The resolution of such claims could result in material adjustments to our financial statements.
For additional information, see Note 2 to our Consolidated Financial Statements included in Part II, Item 8, “Financial Statements and Supplementary Data” of this Annual Report on Form 10-K.

Our actual financial results may vary significantly from the projections filed with the Bankruptcy Court and, as a result of our bankruptcy, our historical financial information is not comparable to future financial information.
In connection with the Plan, we were required to prepare projected financial information to demonstrate to the Bankruptcy Court the feasibility of the Plan and our ability to continue operations upon emergence from bankruptcy. These projections were limited by the information available to us as of the date they were prepared and reflected numerous assumptions concerning anticipated future performance and prevailing and anticipated market and economic conditions that were and continue to be beyond our control and that may not materialize. Projections are inherently subject to uncertainties and to a wide variety of significant business, economic and competitive risks. Therefore, variations from the projections may be material. These projections were prepared solely for the purpose of the bankruptcy proceedings, have not been incorporated into this report, have not been, and will not be, updated on an ongoing basis and should not be considered or relied upon by investors.
Additionally, as a result of the consummation of the Plan and the transactions contemplated thereby, our financial condition and results of operations from and after our emergence from bankruptcy may not be comparable to the financial condition or results of operations reflected in our historical financial statements.
Risks Related to Our Dependence on Third Parties
We rely on third parties to conduct our clinical trials. If these third parties do not meet our deadlines or otherwise conduct the trials as required, our clinical development programs could be delayed or unsuccessful and we may not be able to obtain regulatory approval for or commercialize our product candidates when expected or at all.
We do not have the ability to conduct all aspects of our preclinical testing or clinical trials ourselves. Therefore, the timing of the initiation and completion of these trials is uncertain and may occur on substantially different timing from our estimates. We also use CROs to conduct our clinical trials and rely on medical institutions, clinical investigators, CROs, and consultants to conduct our trials in accordance with our clinical protocols and regulatory requirements. Our CROs, investigators, and other third parties play a significant role in the conduct of these trials and subsequent collection and analysis of data.
There is no guarantee that any CROs, investigators, or other third parties on which we rely for administration and conduct of our clinical trials will devote adequate time and resources to such trials or perform as contractually required. If any of these third parties fails to meet expected deadlines, fails to adhere to our clinical protocols, or otherwise performs in a substandard manner, our clinical trials may be extended, delayed, or terminated. If any of our clinical trial sites terminates for any reason, we may experience the loss of follow-up information on subjects enrolled in our ongoing clinical trials unless we are able to transfer those subjects to another qualified clinical trial site. In addition, principal investigators for our clinical trials may serve as scientific advisors or consultants to us from time to time and may receive cash or equity compensation in connection with such services. If these relationships and any related compensation result in perceived or actual conflicts of interest, the integrity of the data generated at the applicable clinical trial site may be jeopardized.

We rely completely on third parties most of which are sole source suppliers, to supply drug substance and manufacture drug product for our clinical trials and preclinical studies and intend to rely on other third parties to produce commercial supplies of product candidates, and our dependence on third parties could adversely impact our business.

We are completely dependent on third-party suppliers, most of which are sole source suppliers of the drug substance and drug product forsuppliers. If our product candidates. We are continually evaluating potential alternate sources of supply but there can be no assurance that any such suppliers would be available, acceptable or successful.  From time to time, we experience delays from our drug substance suppliers. To date, such delays have been manageable.  However, if these third-party suppliers do not supply sufficient quantities for product candidates to us on a timely basis and in accordance with applicable specifications and other regulatory requirements there couldincluding PPQ, we may be a significant interruptionunable to supply our product candidates in development for clinical trials or ship them to customers, if authorized or approved for commercial use. In addition, as further discussed above, our third-party suppliers have experienced disruptions in supply of our supplies, which would adversely affect clinical development of the product candidate, including affecting our ability to enroll in and timely progress clinical trials. Furthermore, if any of our contract manufacturers cannot successfully manufacture material that conforms to our specifications and with regulatory requirements, we will not be able to secure and/or maintain regulatory approval, ifprocuring essential items as a result of supply chain issues caused by the COVID-19 pandemic. We regularly evaluate potential alternate sources of supply of raw materials, various components used in production, drug substance and drug product, but there can be no assurance that any for our product candidates.

such suppliers would be available, acceptable, or successful.

We will also rely on our contract manufacturersCMOs to purchase from third-party suppliers the materials necessary to produce our product candidates for our anticipated clinical trials. There are a small number of suppliers for certain capital equipment and raw materials used to manufacture our product candidates. We do not have any control over the process or timing of the acquisition of these raw materials by our contract manufacturers. Moreover, we currently do not have agreements in place for the commercial production of these raw materials. Any significant delay in the supply of a product candidate or the raw material components thereof for an ongoing clinical trial could considerably delay completion of that clinical trial, product candidate testing, and potential regulatory approval of that product candidate.

We do not expect

In addition, a significant portion of the raw materials and intermediates used to have the resources or capacity to commercially manufacture any of our proposed product candidates if approved,are supplied by third-party manufacturers and will likely continue to be dependent on third-party manufacturers. Our dependence oncorporate partners outside of the U.S. As a result, any political or economic factors in a specific country or region, including any changes in or interpretations of trade regulations, compliance requirements or tax legislation, that would limit or prevent third parties to manufacture and supply us with clinical trialoutside of the U.S. from supplying these materials and any approved product candidates maycould adversely affect our ability to develop and commercializeconduct our product candidates on a timely basis.

pending or contemplated clinical trials.

We may not be successful in establishing and maintaining additional development partnerships and licensing agreements, which could adversely affect our ability to develop and commercialize product candidates.

Part of our strategy is to enter into development partnerships and licensing agreements. We face significant competition in seeking appropriate partners and the negotiation process is time consuming and complex. Even if we are successful in securing a development partnership, we may not be able to continue it. For example, in 2017, we terminated certain of our licensing agreements for KB001-A, a discontinued drug candidate. We cannot predict the impact of that decision on the likelihood of our ability to enter into future partnerships for our programs. Moreover, we may not be successful in our efforts to establish a development partnership or other alternative arrangements for any of our other existing or future product candidates and programs because, among other reasons, our research and development pipeline may be insufficient, our product candidates and programs may be deemed to be at too early a stage of development for collaborative effort and/or third parties may not view our product candidates and programs as having the requisite potential to demonstrate safety and efficacy. Even if we are successful in our efforts to establish new development partnerships, the terms that we agree upon may not be favorable to us and we may not be able to maintain such development partnerships if, for example, development or approval of a product candidate is delayed or sales of an approved product candidate are disappointing. Any delay in entering into new development partnership agreements relatedIn addition, our ability to enforce our product candidates could delay the developmentpartners’ obligations under any future collaboration efforts may be limited due to time and commercializationresource constraints, competing corporate priorities of our product candidatesfuture partners, and reduce their competitiveness if they reach the market.other factors.

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Moreover, if

If we fail to establish and maintain additional development partnerships related to our product candidates:

the development of our current or future product candidates may be terminated or delayed;
our cash expenditures related to development of certain of our current or future product candidates would increase significantly and we may need to seek additional financing;
we may be required to hire additional employees or otherwise develop expertise, such as sales and marketing expertise, for which we have not budgeted; and
we will bear all of the risk related to the development of any such product candidates.

·the development and commercialization of our current or future product candidates may be terminated or delayed;
·our cash expenditures related to development of certain of our current or future product candidates would increase significantly and we may need to seek additional financing;
·we may be required to hire additional employees or otherwise develop expertise, such as sales and marketing expertise, for which we have not budgeted; and
·we will bear all of the risk related to the development of any such product candidates.

Our or any new partner’s failure to develop, manufacture or effectively commercialize our product would result in a material adverse effect on our business and results of operations and would likely cause our stock price to decline.

Currently pending, threatened or future litigation, arbitration, governmental proceedings or inquiries could result in material adverse consequences, including judgments or settlements.

We are, or may from time-to-time become, involved in lawsuits and other legal or governmental proceedings. See Item 3. to this Annual Report on Form 10-K and Note 11 to the Consolidated Financial Statements included in this Annual Report on Form 10-K for information regarding currently pending litigation that could have a material impact on us. Many of these matters raise complicated factual and legal issues and are subject to uncertainties and complexities, all of which make the matters costly to address. The timing of the final resolutions to any such lawsuits, inquiries, and other legal proceedings is uncertain.

Additionally, the possible outcomes or resolutions to these matters could include adverse judgments or settlements, either of which could require substantial payments, adversely affecting our consolidated financial condition, results of operations and cash flows. Any judgment against us, the entry into any settlement agreement, or the imposition of any fine could have a material adverse effect on our consolidated financial condition, results of operations and cash flows.

The terms of our loan agreement with Hercules may restrict our current and future operations, particularly our ability to respond to changes in business or to take certain actions, including to pay dividends to our stockholders.

On March 10, 2021, we entered into the Loan and Security Agreement with Hercules Capital, Inc. (the “Term Loan”) with a scheduled maturity date of March 1, 2025. As described in more detail in Note 5 to the Consolidated Financial Statements, the Term Loan contains, and any future indebtedness we incur will likely contain, a number of restrictive covenants that impose operating restrictions, including restrictions on our ability to engage in acts that may be in our best long-term interests.

A breach of any of these covenants could result in an event of default under the Loan Agreement. Upon the occurrence of such an event of default, Hercules may, at its discretion, accelerate and demand payment of all or any part of the outstanding advances, together with a prepayment charge, end of term charge, and all interest due and payable under the Term Loan. Hercules also may seek to realize on the collateral we have pledged as security for the Term Loan. If our indebtedness is accelerated, we cannot assure you that we will have sufficient assets to repay the indebtedness. The restrictions and covenants in the Term Loan and any future financing agreements may adversely affect our ability to finance future operations or capital needs or to engage in other business activities.

We review and explore strategic alternatives on an on-going basis, but there can be no assurance that we will be successful in identifying or completing any strategic alternative, and any such strategic alternative, including future acquisitions of and investments in new businesses, could impact our business and financial condition.

We regularly review strategic alternatives to ensure our current structure optimizes our ability to execute our strategic plan and to maximize stockholder value. The review of strategic alternatives could result in, among other things, a sale, merger, consolidation or business combination, asset divestiture, partnering, licensing or other collaboration agreements, or potential acquisitions of or investments in new businesses or recapitalizations, in one or more transactions, or continuing to operate with our current business plan and strategy. There can be no assurance that the exploration of strategic alternatives will result in the identification or consummation of any transaction.

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The process of exploring strategic alternatives may be time consuming, disruptive to our business operations and divert the attention of management, and if we are unable to effectively manage the process or successfully integrate any acquired personnel or operations, our business, financial condition and results of operations could be adversely affected. We also cannot assure that any potential transaction or other strategic alternative, if identified, evaluated and consummated, will perform as expected, will realize the expected benefits, synergies, or developments or that it will provide greater value to our stockholders than that reflected in our current stock price. Any potential transaction would be dependent upon a number of factors that may be beyond our control, including, among other factors, market conditions, industry trends, the interest of third parties in our business or product candidates and the availability of financing to potential buyers on reasonable terms. 

In addition, we may incur substantial expenses associated with identifying and evaluating potential strategic alternatives. To the extent we finance any acquisition or other strategic alternative in cash, it would reduce our cash reserves, and to the extent the purchase price is paid with shares of our common or preferred stock, it could be dilutive to our current stockholders. To the extent we finance any acquisition or investment with the proceeds from the incurrence of debt, this would increase our level of indebtedness and could negatively affect our liquidity, credit rating and restrict our operations. Moreover, we may face contingent liabilities in connection with any acquisitions or investments.

Risks Related to Intellectual Property

If we fail to obtain, maintain and adequately protect or enforce our intellectual property rights or secure rights to patents of others, the value of our intellectual property rights would diminish, and our business and competitive position would suffer.

Our success, competitive position and future revenues will depend in part on our ability and the abilities of our licensors and licensees to obtain and maintain patent protection for our products, methods, processes and other technologies, to preserve our trade secrets, to prevent third parties from infringing on our proprietary rights and to operate without infringing the proprietary rights of third parties. We have an active patent protection program that includes filing patent applications on new compounds, formulations, delivery systems and methods of making and using products and prosecuting these patent applications in the United StatesU.S. and abroad. As patents issue, we also file continuation applications as appropriate. Although we have taken steps to build what we believe to be a strong patent portfolio, we cannot predict:

·the degree and range of protection any patents will afford us against competitors, including whether third parties find ways to invalidate or otherwise circumvent our licensed patents;
·if and when patents will issue in the United StatesU.S. or any other country;
·whether or not others will obtain patents claiming aspects similar to those covered by our licensed patents and patent applications;
·whether we will need to initiate litigation or administrative proceedings to protect our intellectual property rights, which may be costly whether we win or lose;
·whether any of our patents will be challenged by our competitors alleging invalidity or unenforceability and, if opposed or litigated, the outcome of any administrative or court action as to patent validity, enforceability or scope;
·whether a competitor will develop a similar compound that is outside the scope of protection afforded by a patent or whether the patent scope is inherent in the claims modified due to interpretation of claim scope by a court;
·whether there were activities previously undertaken by a licensor that could limit the scope, validity or enforceability of licensed patents and intellectual property; or
·whether a competitor will assert infringement of its patents or intellectual property, whether or not meritorious, and what the outcome of any related litigation or challenge may be.

Our success also depends upon the skills, knowledge and experience of our scientific and technical personnel, our consultants and advisors as well as our licensors, sublicensees and contractors. To help protect our proprietary know-how and our inventions for which patents may be unobtainable or difficult to obtain, we rely on trade secret protection and confidentiality agreements. To this end, we require all employees, consultants and board members to enter into agreements that prohibit the disclosure of confidential information and, where applicable, require disclosure and assignment to us of the ideas, developments, discoveries and inventions important to our business.These agreements may not provide adequate protection for our trade secrets, know-how or other proprietary information in the event of any unauthorized use or disclosure or the lawful development by others of such information. If any of our trade secrets, know-how or other proprietary information is disclosed, the value of our trade secrets, know-how and other proprietary rights would be significantly impaired, and our business and competitive position would suffer.

Due to legal and factual uncertainties regarding the scope and protection afforded by patents and other proprietary rights, we may not have meaningful protection from competition.

Our long-term success will substantially depend upon our ability to protect our proprietary technologies from infringement, misappropriation, discovery and duplication and avoid infringing the proprietary rights of others. Our patent rights, and the patent rights of biopharmaceutical companies in general, are highly uncertain and include complex legal and factual issues. These uncertainties also mean that any patents that we own or may obtain in the future could be subject to challenge, and even if not challenged, may not provide us with meaningful protection from competition. Patents already issued to us, or our pending applications may become subject to dispute, and any dispute could be resolved against us.

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If some or all of our or any licensor’s patents expire or are invalidated or are found to be unenforceable, or if some or all of our patent applications do not result in issued patents or result in patents with narrow, overbroad, or unenforceable claims, or claims that are not supported in regard to written description or enablement by the specification, or if we are prevented from asserting that the claims of an issued patent cover a product of a third party, we may be subject to competition from third parties with products in the same class of products as our product candidates or products with the same active pharmaceutical ingredients as our product candidates, including in those jurisdictions in which we have no patent protection.

Our commercial success will depend in part on obtaining and maintaining patent and trade secret protection for our product candidates, as well as the methods for treating patients in the product indications using these product candidates. We will be able to protect our product candidates and the methods for treating patients in the applicable product indications using these product candidates from unauthorized use by third parties only to the extent that we or our exclusiveany licensor owns or controls such valid and enforceable patents or trade secrets.

Even if our product candidates and the methods for treating patients for prescribed indications using these product candidates are covered by valid and enforceable patents and have claims with sufficient scope, disclosure and support in the specification, the patents will provide protection only for a limited amount of time. Our and any licensor’s ability to obtain patents can be highly uncertain and involve complex and in some cases unsettled legal issues and factual questions. Furthermore, different countries have different procedures for obtaining patents, and patents issued in different countries provide different degrees of protection against the use of a patented invention by others. Therefore, if the issuance to us or any licensor, in a given country, of a patent covering an invention is not followed by the issuance, in other countries, of patents covering the same invention, or if any judicial interpretation of the validity, enforceability, or scope of the claims in, or the utility, written description or enablement in, a patent issued in one country is not similar to the interpretation given to the corresponding patent issued in another country, our ability to protect our intellectual property in those countries may be limited. Changes in either patent laws or in interpretations of patent laws in the United StatesU.S. and other countries may materially diminish the value of our intellectual property or narrow the scope of our patent protection.

We may be subject to competition from third parties with products in the same class of products as our product candidates, or products with the same active pharmaceutical ingredients as our product candidates in those jurisdictions in which we have no patent protection. Even if patents are issued to us or any licensor regarding our product or methods of using them, those patents can be challenged by our competitors who can argue such patents are invalid or unenforceable on a variety of grounds, including lack of utility, lack sufficient written description or enablement, utility, or that the claims of the issued patents should be limited or narrowly construed. Patents also will not protect our product candidates if competitors devise ways of making or using these products without legally infringing our patents. The current U.S. regulatory environment may have the effect of encouraging companies to challenge branded drug patents or to create non-infringing versions of a patented product in order to facilitate the approval of abbreviated new drug applicationsANDAs for generic substitutes. These same types of incentives encourage competitors to submit new drug applicationsNDAs that rely on literature and clinical data not prepared for or by the drug sponsor, providing another less burdensome pathway to approval.

If we infringe the rights of third parties, we could be prevented from selling products and be forced to defend against litigation and pay damages.

There is a risk that we aremay be inadvertently infringing the proprietary rights of third parties because numerous United StatesU.S. and foreign issued patents and pending patent applications, which are owned by third parties, exist in the fields that are the focus of our development and manufacturing efforts. Others might have been the first to make the inventions covered by each of our or any licensor’s pending patent applications and issued patents and/or might have been the first to file patent applications for these inventions. In addition, because patent applications take many months to publish and patent applications can take many years to issue, there may be currently pending applications, unknown to us or any licensor, which may later result in issued patents that cover the production, manufacture, synthesis, commercialization, formulation or use of our product candidates. In addition, the production, manufacture, synthesis, commercialization, formulation or use of our product candidates may infringe existing patents of which we are not aware. Defending ourselves against third-party claims, including litigation in particular, would be costly and time consuming and would divert management’s attention from our business, which could lead to delays in our development or commercialization efforts. If third parties are successful in their claims, we might have to pay substantial damages or take other actions that are adverse to our business.

If our products, methods, processes and other technologies infringe the proprietary rights of other parties, we could incur substantial costs and may have to:

·obtain licenses, which may not be available on commercially reasonable terms, if at all;
·redesign our products or processes to avoid infringement, which may not be possible or could require substantial funds and time;
·stop using the subject matter claimed in patents held by others, which could cause us to lose the use of one or more of our drug candidates;
·pay damages royalties, or other amounts; or
·grant a cross license to our patents to another patent holder.

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We expect that, as our drug candidates move further into clinical trials and commercialization and our public profile is raised, we will be more likely to be subject to such claims.

We may fail to comply with any of our obligations under existing agreements pursuant to which we license or have otherwise acquired rights or technology, which could result in the loss of rights or technology that are material to our business.

We are a party to technology licenses and have acquired certain assets and rights that are important to our business and we may enter into additional licenses or acquire additional assets and rights in the future. We currently hold licenses from LICR,Ludwig Institute for Cancer Research (“LICR”), BioWa, Inc. (“BioWa”), Lonza Sales AG (“Lonza”), Mayo Foundation (“Mayo”) and Lonza.the University of Zurich (“UZH”). These licenses impose various commercial, contingent payments, royalty, insurance, indemnification, and other obligations on us. If we fail to comply with these obligations, the licensor may have the right to terminate the license or take back rights or assets, in which event we would lose valuable rights under our collaboration agreements, potential claims and our ability to develop product candidates.

We may be subject to claims that our consultants or independent contractors have wrongfully used or disclosed alleged trade secrets of their other clients or former employers to us.

As is common in the biotechnology and pharmaceutical industry, we engage the services of consultants to assist us in the development of our product candidates. Many of these consultants were previously employed at or may have previously or may be currently providing consulting services to, other biotechnology or pharmaceutical companies, including our competitors or potential competitors. We may become subject to claims that our company or a consultant inadvertently or otherwise used or disclosed trade secrets or other information proprietary to their former employers or their former or current clients. Litigation may be necessary to defend against these claims. Even if we are successful in defending against these claims, litigation could result in substantial costs and be a distraction to our management team.

We may not be able to protect our intellectual property rights throughout the world.

Filing, prosecuting and defending patents on product candidates in all countries throughout the world would be prohibitively expensive, and we intend to seek patent protection only in selected countries. Our intellectual property rights in some countries outside the United StatesU.S. can be less extensive than those in the United States.U.S. In addition, the laws of some foreign countries do not protect intellectual property rights to the same extent as federal and state laws in the United States.U.S. Consequently, we may not be able to prevent third parties from practicing our inventions in all countries outside the United States,U.S., or from selling or importing products made using our inventions in and into the United StatesU.S. or other jurisdictions. Competitors may use our technologies in jurisdictions where we have not obtained patent protection to develop their own products and further, may export otherwise infringing products to territories where we have patent protection, but enforcement is not as strong as that in the United States.U.S. These products may compete with our product candidates and our patents or other intellectual property rights may not be effective or sufficient to prevent them from competing.

Many companies have encountered significant problems in protecting and defending intellectual property rights in foreign jurisdictions. The legal systems of certain countries, particularly certain developing countries, do not favor the enforcement of patents and other intellectual property protection, particularly those relating to biopharmaceuticals, which could make it difficult for us to stop the infringement of our patents or marketing of competing products in violation of our proprietary rights generally. Proceedings to enforce our patent rights in foreign jurisdictions could result in substantial costs and divert our efforts and attention from other aspects of our business, could put our patents at risk of being invalidated or interpreted narrowly and our patent applications at risk of not issuing and could provoke third parties to assert claims against us. We may not prevail in any lawsuits that we initiate and the damages or other remedies awarded, if any, may not be commercially meaningful. Accordingly, our efforts to enforce our intellectual property rights around the world may be inadequate to obtain a significant commercial advantage from the intellectual property that we develop or license.

Risks Related to Our Common Stock

The Black Horse Entities own more than a majority

A significant portion of our total outstanding common stock and willshares are eligible to be able to exert control over all matters subject to stockholder approval.

The completion ofsold into the Restructuring Transactions on February 27, 2018 resulted in a change in control of our company, as the issuance of the New Common Shares to the Black Horse Entities resultedmarket in the Black Horse Entities and their affiliates owning more than a majority of our outstanding common stock. As of February 27, 2018,near future, which could cause the Black Horse Entities collectively held 66,870,851 sharesmarket price of our common stock or approximately 62.6% ofto drop significantly, even if our outstanding common stock, and Dr. Chappell, a member of our board of directors from June 30, 2016 until November 10, 2017, who controls  the Black Horse Entities, nor has the ability to elect all of the members of our board of directors and thereby to control our management and affairs, including determinations with respect to entry into new lines of business borrowings, and issuances of common stock or other securities, as well as the outcome of all matters requiring stockholder approval and the ability to cause or prevent a change of control of our company.  The control possessed by Dr. Chappell could prevent or discourage unsolicited acquisition proposals or offers for our common stock that may be in the best interest of our other stockholders.

The interests of the Black Horse Entities may not in all cases be aligned with the interests of our other stockholders. For example, a saleis doing well.

Sales of a substantial number of shares of our common stock in the future bypublic market or the Black Horse Entities could cause our stock price to decline. Additionally, the Black Horse Entities areperception in the business of making investments in companies and may from time to time acquire and hold interests in businessesmarket that compete directly or indirectly with us. Accordingly, the Black Horse Entities may also pursue acquisition opportunities that may be complementary to our business, and as a result, those acquisition opportunities may not be available to us. In addition, Black Horse Entities may have an interest in pursuing acquisitions, divestitures and other transactions that, in their judgment, could enhance their equity investment, even though such transactions might involve risks to holders of our common stock.


The concentration of our common stock owned by insiders may limit the ability of our other stockholders to influence corporate matters and may contribute to volatility in our stock price.
We have a relatively small public float due to the ownership percentage of our executive officers and directors, and greater than 5% stockholders.  Our directors, executive officers, and the holders of more than 5%a large number of our common stock together with their affiliates beneficially own approximately 94.3% of our common stock as of February 27, 2018. Some of these persons or entities may have interests that are different from our other stockholders.  As of February 27, 2018, Nomis Bay held 33,573,530 shares of our common stock, or approximately 31.4% of our outstanding common stock, andintend to sell shares, could depress the Black Horse Entities collectively held 66,870,851 shares of our common stock, or approximately 62.6% of our outstanding common stock. This significant concentration of ownership may adversely affect the tradingmarket price of our common stock because investors often perceive disadvantages in owning stock in companies with controlling stockholders.
As a resultand could impair our future ability to obtain capital, especially through an offering of our small public float, our common stock may be less liquid and have greater stock price volatility than the common stock of companies with broader public ownership.equity securities. In addition, the tradingholders of a relatively small volumesubstantial number of shares of our common stock have rights, subject to certain conditions, to require us to file registration statements covering their shares or to include their shares in registration statements that we may result in significant volatility in ourfile for ourselves or other stockholders.

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We have also entered into a Controlled Equity OfferingSM Sales Agreement (the “Sales Agreement”) with Cantor Fitzgerald & Co. (“Cantor”), under which we may issue and sell from time-to-time shares of common stock price. If and tothrough Cantor, as sales agent. Sales of a substantial number of shares under the extent ownershipSales Agreement, or the perception that those sales may occur, could cause the market price of our common stock becomes more concentrated, whether due to increased ownership bydecline. See Notes 8 and 13 to the Consolidated Financial Statements for additional information regarding the Sales Agreement and our directors and executive officers or other principal stockholders, any future repurchasesales of common stock pursuant to the Sales Agreement.

Further, certain shares of our common stock that are currently outstanding but have not been registered for resale may currently be sold under Rule 144 under the Securities Act or other factors, ourthe Securities Act. Sales of a substantial number of these shares in the public float would further decrease, which in turn would likely result in increased stockmarket, or the perception that those sales may occur, could cause the market price volatility. Additionally, because a large amount of our common stock is closely held, we may experience low trading volume or large fluctuations in share price and volume due to large sales bydecline.

Despite our principal stockholders.

There is a limited trading market for our securities. Anlisting on the Nasdaq Capital Market, there can be no assurance that an active trading market for our common stock may notwill develop or be sustained, and the marketNasdaq Capital Market may subsequently delist our common stock if we fail to comply with ongoing listing standards.

The Nasdaq Capital Market’s rules for listed companies require us to meet certain financial, public float, bid price and liquidity standards on an ongoing basis in order to continue the listing of our common stock. In addition to specific listing and maintenance standards, the Nasdaq Capital Market has broad discretionary authority over the continued listing of securities, iswhich it could exercise with respect to the listing of our common stock.

As a listed company, we are required to meet the continued listing requirements applicable to all Nasdaq Capital Market companies. If we fail to meet those standards, as applied by the Nasdaq Capital Market in its discretion, our common stock may be subject to volatility.

Trading indelisting. We intend to take all commercially reasonable actions to maintain our Nasdaq listing. If our common stock is delisted in the future, it is not likely that we will be able to list our common stock on another national securities exchange and, as a result, we expect our securities would be quoted on an over-the-counter market; however, if this were to occur, our stockholders could face significant material adverse consequences, including limited availability of market quotations for our common stock and reduced liquidity for the trading of our securities. In addition, in the event of such delisting, we could experience a decreased ability to issue additional securities and obtain additional financing in the future.

The National Securities Markets Improvement Act of 1996, which is a federal statute, prevents or preempts the states from regulating the sale of certain securities, which are referred to as “covered securities.” Because our common stock is listed on the Nasdaq Capital Market, shares of our common stock qualify as covered securities under the statute. Although the states are preempted from regulating the sale of our securities, the federal statute does allow the states to investigate companies if there is a suspicion of fraud, and, if there is a finding of fraudulent activity, then the states can regulate or bar the sale of covered securities in a particular case. Further, if we were no longer listed on the Nasdaq Capital Market, our securities would not qualify as covered securities under the statute, and we cannot predict whetherwould be subject to regulation in each state in which we offer our securities.

Further, there can be no assurance that an active trading market for our common stock will ever develop in the future. In the absence of an active trading market:

investors may have difficulty buying and selling shares ofbe sustained despite our common stock;
market visibility for shares of our common stock may be limited;
a lack of visibility for shares of our common stock may have a depressive effectlisting on the market price for shares of our common stock; and
significant sales of our common stock, or the expectation of these sales, could materially and adversely affect the market price of our common stock.
An inactive market may also impair our ability to raise capital to continue as a going concern and to fund operations by selling shares and may impair our ability to acquire additional intellectual property assets by using our shares as consideration.
No assurance can be given that an active market will develop for the common stock or as to the liquidity of the trading market for the common stock. The common stock may be traded only infrequently in transactions arranged through brokers or otherwise, and reliable market quotations may not be available.
Our ability to re-list our common stock on a national securities exchange is subject to us meeting applicable listing criteria.
If we are able to raise the necessary capital, we intend to apply for our common stock to be re-listed on a national securities exchange. In addition, we are exploring strategic transactions to affect a listing on a national securities exchange, including by completing a reverse merger or sale. However, no assurances can be given regarding our ability to achieve a listing in a timely manner or at all. Each national securities exchange requires companies desiring to list their common stock to meet certain listing criteria including total number of stockholders, minimum stock price, total value of public float, and in some cases total shareholders equity and market capitalization. Our failure to meet such applicable listing criteria will prevent us from listing our common stock on a national securities exchange.
Nasdaq Capital Market.

Raising additional funds by issuing securities or through licensing or lending arrangements may cause dilution to our existing stockholders, restrict our operations or require us to relinquish proprietary rights.

To the extent that we raise additional capital by issuing equity securities, the share ownership of existing stockholders will be diluted. To the extent that additional capital is raised through the sale of equity or convertible debt securities, the issuance could result in further dilution to our stockholders.

stockholders by causing a reduction in their proportionate ownership and voting power.

Any future debt financing may involve covenants that restrict our operations, including, among other restrictions, limitations on our ability to incur liens or additional debt, pay dividends, redeem our stock, make certain investments, and engage in certain merger, consolidation, or asset sale transactions. In addition, if we raise additional funds through licensing arrangements, it may be necessary to grant potentially valuable rights to our product candidates or grant licenses on terms that are not favorable to us.

We have identified

Any material weaknesses in our internal control over financial reporting andthat we may be unable to maintain effective control over financial reporting.

In the course of the preparation and external audit of our consolidated financial statements for the fiscal year ended December 31, 2017, we and our independent registered public accounting firm identified a “material weakness” in our internal control over financial reporting related to our limited number of accounting and financial reporting personnel. A material weakness in internal control over financial reporting is a deficiency, or combination of deficiencies, in internal control over financial reporting that results in more than a reasonable possibility that a material misstatement of annual or interim consolidated financial statements will not be prevented or detected on a timely basis. We identified an insufficient degree of segregation of duties amongst our accounting and financial reporting personnel.
During 2018, we intend to work to remediate the material weaknesses identified above, which could include the addition of accounting and financial reporting personnel and/or the engagement of accounting and personnel consultants on a limited-time basis until we add a sufficient number of personnel. However, our current financial position could make it difficult for us to add the necessary resources.
Any material weaknesses in our internal control over financing reportingidentify in the future could adversely affect investor confidence, impair the value of our common stock and increase our cost of raising capital.

If we are unablewere to remediate our material weakness over financial controls or we identify otherany material weaknesses or significant deficiencies in our internal controls over financial reporting in the future, our operating results might be harmed, we may fail to meet our reporting obligations or fail to prevent or detect material misstatements in our financial statements. Any such failure could, in turn, affect the future ability of our management to certify that internal control over our financial reporting is effective. Inferior internal control over financial reporting could also subject us to the scrutiny of the SEC and other regulatory bodies which could cause investors to lose confidence in our reported financial information and could subject us to civil or criminal penalties or stockholder litigation, which could have an adverse effect on our results of operations and the market price of our common stock.

49

In addition, if we or our independent registered public accounting firm identify deficiencies in our internal control over financial reporting, the disclosure of that fact, even if quickly remedied, could reduce the market’s confidence in our financial statements and harm our share price. Furthermore, deficiencies could result in future non-compliance with Section 404 of the Sarbanes-Oxley Act of 2002. Such non-compliance could subject us to a variety of administrative sanctions, including review by the SEC or other regulatory authorities.

Our stock price is volatile and purchasers of our common stock could incur substantial losses.
The market price of our common stock may fluctuate significantly in response to a number of factors. These factors include those discussed in this “Risk Factors” section of this Annual Report on Form 10-K and others such as:
delay or failure in initiating or completing preclinical studies or clinical trials, or unsatisfactory results of these trials and the resulting impact on ongoing product development;
the success, progress, timing and costs of our efforts to evaluate or consummate various strategic alternatives if in the best interests of our stockholders;
our ability to re-list our common stock on a national securities exchange, whether through a new listing or by completing a strategic transaction;
announcements regarding equity or debt financing transactions;
sales or potential sales of substantial amounts of our common stock or securities convertible into our common stock;
announcements about us or about our competitors including clinical trial results, regulatory approvals, or new product candidate introductions;
developments concerning our development partner, licensors or product candidate manufacturers;
litigation and other developments relating to our patents or other proprietary rights or those of our competitors;
conditions in the pharmaceutical or biotechnology industries and the economy as a whole;
governmental regulation and legislation;
recruitment or departure of members of our board of directors, management team or other key personnel;
changes in our operating results;
any financial projections we may provide to the public, any changes in these projections, our failure to meet these projections, or changes in recommendations by any securities analysts that elect to follow our common stock;
change in securities analysts’ estimates of our performance, or our failure to meet analysts’ expectations; and
price and volume fluctuations in the overall stock market or resulting from inconsistent trading volume levels of our shares.
In recent years, the stock market in general, and the market for pharmaceutical and biotechnological companies in particular, has experienced extreme price and volume fluctuations that have often been unrelated or disproportionate to changes in the operating performance of the companies whose stock is experiencing those price and volume fluctuations. Broad market and industry factors may seriously affect the market price of our common stock, regardless of our actual operating performance.
Our common stock may be considered to be a “penny stock” and, as such, any market for our common stock may be further limited by certain SEC rules applicable to penny stocks.
To the extent the price of our common stock remains below $5.00 per share, our common stock may be subject to certain “penny stock” rules promulgated by the SEC. Those rules impose certain sales practice requirements on brokers who sell penny stock to persons other than established customers and accredited investors (generally institutions with assets in excess of $5,000,000 or individuals with net worth in excess of $1,000,000). For transactions covered by the penny stock rules, the broker must make a special suitability determination for the purchaser and receive the purchaser’s written consent to the transaction prior to the sale. Furthermore, the penny stock rules generally require, among other things, that brokers engaged in secondary trading of penny stocks provide customers with written disclosure documents, monthly statements of the market value of penny stocks, disclosure of the bid and asked prices and disclosure of the compensation to the brokerage firm and disclosure of the sales person working for the brokerage firm. These rules and regulations adversely affect the ability of brokers to sell our common stock and limit the liquidity of our common stock.
In addition, under applicable SEC rules and interpretations, issuers of penny stocks are subject to disclosure requirements that can increase the cost and complexity of registering shares for sale in a public offering, including a public offering proposed to be made to facilitate sales by existing stockholders. These penny stock disclosure requirements may pose challenges or impediments to achieving our goals of increasing our public float and the liquidity of the trading market for our shares.
Substantial future sales of shares by existing stockholders, or the perception that such sales may occur, could cause our stock price to decline.
If our existing stockholders, particularly our directors, executive officers and the holders of more than 5% of our common stock, or their affiliates or associates, sell substantial amounts of our common stock in the public market, or are perceived by the public market as intending to sell substantial amounts of our common stock, the trading price of our common stock could decline significantly. As of March 23, 2018, we had 109,207,786 shares of common stock outstanding, of which 100,683,750 shares were held by directors, officers and stockholders who hold greater than 5% of our common stock.
If securities analysts do not publish research or publish unfavorable research about our business, our stock price and trading volume could decline.
The trading market for a company’s common stocks often is based in part on the research and reports that securities and industry analysts publish about the company.  We are not currently aware of any well-known analysts that are covering our common stock, and without analyst coverage it could be hard to generate interest in investments in our common stock.  Furthermore, if analyst coverage does develop, and an analyst downgrades our stock or publishes unfavorable research about our business, or if our clinical trials or operating results fail to meet the analysts’ expectations, our stock price would likely decline.

We have never paid and do not intend to pay cash dividends and, consequently, yourthe ability to achieve a return on yourany investment in our common stock will depend on appreciation in the price of our common stock.

We have never paid cash dividends on any of our capital stock, and we currently intend to retain future earnings, if any, to fund the development and growth of our business. Therefore, you area holder of our stock is not likely to receive any dividends on our common stock for the foreseeable future. Since we do not intend to pay dividends, yourthe ability to receive a return on an investment in our common stock will depend on any future appreciation in the market value of our common stock. There is no guarantee that our common stock will appreciate or even maintain the price at which you purchased it.

it was purchased.

Anti-takeover provisions in our charter documents and Delaware law, could discourage, delay, or prevent a change in control of our company and may affect the trading price of our common stock.

We are a Delaware corporation, and the anti-takeover provisions of the Delaware General Corporation Law may discourage, delay, or prevent a change in control by prohibiting us from engaging in a business combination with an interested stockholder for a period of three years after the person becomes an interested stockholder, even if a change in control would be beneficial to our existing stockholders.

Our amendedAmended and restated certificateRestated Certificate of incorporation,Incorporation, as amended (the “Charter”), and our second amendedSecond Amended and restated bylawsRestated Bylaws (the “Bylaws”) may discourage, delay, or prevent a change in our management or control over us that stockholders may consider favorable. Our Charter and Bylaws:

provide that vacancies on our board of directors, including newly created directorships, may be filled only by a majority vote of directors then in office;
do not provide stockholders with the ability to cumulate their votes; and
require advance notification of stockholder nominations and proposals.

·provide that vacancies on our board of directors, including newly created directorships, may be filled only by a majority vote of directors then in office;
·do not provide stockholders with the ability to cumulate their votes; and
·require advance notification of stockholder nominations and proposals.

In addition, effective February 26, 2018, our Charter permits the Board to issue up to 25,000,00025 million shares of Preferred Stock,preferred stock with such powers, rights, terms and conditions as may be designated by the Board upon the issuance of shares of Preferred Stockpreferred stock at one or more times in the future. Specifically, the Charter permits the Board to approve the future issuance of all or any shares of the Preferred Stockpreferred stock in one or more series, to determine the number of shares constituting any series and to determine any voting powers, conversion rights, dividend rights, and other designations, preferences, limitations, restrictions and rights relating to such shares without any further authorization by our stockholders. The Board’s power to issue Preferred Stockpreferred stock could have the effect of delaying, deterring or preventing a transaction or a change in control of our company that might otherwise be in the best interest of our stockholders.

General Risk Factors

Our internal computer systems, or those of our third-party vendors, collaborators or other contractors or consultants, may fail or suffer security breaches, which could result in a material disruption of our product development programs, compromise sensitive information related to our business or prevent us from accessing critical information, potentially exposing us to liability or otherwise adversely affecting our business.

Our internal computer systems and those of our current and any future third-party vendors, collaborators and other contractors or consultants are vulnerable to damage or interruption from computer viruses, computer hackers, malicious code, employee theft or misuse, denial-of-service attacks, sophisticated nation-state and nation-state-supported actors, unauthorized access, natural disasters, terrorism, war and telecommunication and electrical failures. While we seek to protect our information technology systems from system failure, accident and security breach, if such an event were to occur and cause interruptions in our operations, it could result in a disruption of our development programs and our business operations, whether due to a loss of our trade secrets or other proprietary information or other disruptions. For example, the loss of clinical trial data from clinical trials could result in delays in our regulatory approval efforts and significantly increase our costs to recover or reproduce the data. If we were to experience a significant cybersecurity breach of our information systems or data, the costs associated with the investigation, remediation and potential notification of the breach to counterparties and data subjects could be material. In addition, our remediation efforts may not be successful. If we do not allocate and effectively manage the resources necessary to build and sustain the proper technology and cybersecurity infrastructure, we could suffer significant business disruption, including transaction errors, supply chain or manufacturing interruptions, processing inefficiencies, data loss or the loss of or damage to intellectual property or other proprietary information.

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To the extent that any disruption or security breach were to result in a loss of, or damage to, our or our third-party vendors’, collaborators’ or other contractors’ or consultants’ data or applications, or inappropriate disclosure of confidential or proprietary information, we could incur liability including litigation exposure, penalties and fines, we could become the subject of regulatory action or investigation, our competitive position could be harmed and the further development and commercialization of our product candidates could be delayed. Any of the above could have a material adverse effect on our business, financial condition, results of operations or prospects.

Our insurance policies are expensive and protect us only from some business risks, which leaves us exposed to significant uninsured liabilities.

We do not carry insurance for all categories of risk that our business may encounter. Some of the policies we currently maintain include general liability, employment practices liability, property, inventory and cargo, auto, workers’ compensation, products liability, and directors��� and officers’ insurance. We do not know, however, if we will be able to maintain existing insurance with adequate levels of coverage. Any significant, uninsured liability may require us to pay substantial amounts, which would adversely affect our working capital and results of operations.

Changes in laws or regulations relating to data privacy and security, or any actual or perceived failure by us to comply with such laws and regulations, or contractual or other obligations relating to data privacy and security, could have a material adverse effect on our reputation, results of operations, financial condition and cash flows.

We are, an emerging growth company and may increasingly become, subject to various laws and regulations, as well as contractual obligations, relating to data privacy and security in the extended transition period for complyingjurisdictions in which we operate. The regulatory environment related to data privacy and security is increasingly rigorous, with new or revised financial accounting standards and reduced disclosure and governanceconstantly changing requirements applicable to emerging growth companies could make our common stock less attractivebusiness, and enforcement practices are likely to investors.

Weremain uncertain for the foreseeable future. These laws and regulations may be interpreted and applied differently over time and from jurisdiction to jurisdiction, and it is possible that they will be interpreted and applied in ways that may have a material adverse effect on our business, financial condition, results of operations or prospects.

In the U.S., various federal and state regulators, including governmental agencies like the Consumer Financial Protection Bureau and the Federal Trade Commission, have adopted, or are an emerging growth company. Underconsidering adopting, laws and regulations concerning personal information and data security. In particular, regulations promulgated pursuant to the JOBSHealth Insurance Portability and Accountability Act emerging growth companies can delay adopting new or revised accountingof 1996 (“HIPAA”) establish privacy and security standards until such time as those standards applythat limit the use and disclosure of protected health information and require the implementation of safeguards to private companies. We plan to avail ourselvesprotect the privacy, integrity and availability of this exemption from new or revised accountingprotected health information. Determining whether protected health information has been handled in compliance with applicable privacy standards and therefore, weour contractual obligations can be complex and may not be subject to changing interpretation. If we fail to comply with applicable HIPAA privacy and security standards, we could face civil and criminal penalties. In addition, state attorneys general are authorized to bring civil actions seeking either injunctions or damages in response to violations that threaten the same newprivacy of state residents. We cannot be sure how these regulations will be interpreted, enforced or revised accounting standards as other public companies that are not emerging growth companies.

For as long as we continueapplied to be an emerging growth company, we also intend to take advantage of certain other exemptions from various reporting requirements that are applicable to other public companies including, but not limited to, reduced disclosure obligations regarding executive compensation in our periodic reports and proxy statements, exemptions from the requirements of holding a nonbinding advisory stockholder vote on executive compensation and any golden parachute payments not previously approved, exemption from the requirement of auditor attestation in the assessment of our internal control over financial reporting and exemption from any requirement thatoperations.

Certain state laws may be adopted by the Public Company Accounting Oversight Board regarding mandatory audit firm rotationmore stringent or a supplement to the auditor’s report providing additional information about the audit and the financial statements (auditor discussion and analysis). If we do, the information that we provide stockholders may be different than what is availablebroader in scope, or offer greater individual rights, with respect to personal information than federal, international, or other public companies.

Investors could find our common stock less attractive because we will rely on these exemptions,state laws, and such laws may differ from each other, all of which may make it more difficultcomplicate compliance efforts. For example, the California Consumer Privacy Act (“CCPA”), which increases privacy rights for investorsCalifornia residents and imposes obligations on companies that process their personal information, came into effect on January 1, 2020. Among other things, the CCPA requires covered companies to compare our business with other companies in our industry. If some investors find our common stock less attractiveprovide new disclosures to California consumers and provide such consumers new data protection and privacy rights, including the ability to opt-out of certain sales of personal information. The CCPA provides for civil penalties for violations, as well as a private right of action for certain data breaches that result in the loss of personal information. This private right of action may increase the likelihood of, and risks associated with, data breach litigation.

On August 10, 2021, we were notified that the production website used by one of our service providers to prepare for FDA’s decision regarding our EUA request for lenzilumab had been compromised and source code from the website was posted on various internet message boards. Our service provider has taken additional security measures to ensure that drafts and other unapproved materials are no longer visible to the public. Despite additional security measures taken by our service provider, there can be no assurance that their information systems, or any materials prepared in advance by us, or any of our service providers related to potential regulatory decisions would not be compromised, stolen, copied or manipulated. We remind investors that information posted online may be false, misleading or inaccurate. We undertake no obligation to review and/or correct false, misleading, or inaccurate information posted, published or disclosed other than that information made available by us in formal submissions to the SEC.

Internationally, laws, regulations and standards in many jurisdictions apply broadly to the collection, use, retention, security, disclosure, transfer and other processing of personal information. For example, the E.U. General Data Protection Regulation (“GDPR”), which became effective in May 2018, greatly increased the European Commission’s jurisdictional reach of its laws and adds a less active trading marketbroad array of requirements for handling personal data. EU member states are tasked under the GDPR to enact, and have enacted, certain implementing legislation that adds to and/or further interprets the GDPR requirements and potentially extends our common stockobligations and our stock price may be more volatile.potential liability for failing to meet such obligations. The GDPR, together with national legislation, regulations and guidelines of the EU member states governing the processing of personal data, impose strict obligations and restrictions on the ability to collect, use, retain, protect, disclose, transfer and otherwise process personal data. In particular, the GDPR includes obligations and restrictions concerning the consent and rights of individuals to whom the personal data relates, the transfer of personal data out of the European Economic Area, security breach notifications and the security and confidentiality of personal data. The GDPR authorizes fines for certain violations of up to 4% of global annual revenue or €20 million, whichever is greater.

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All of these evolving compliance and operational requirements impose significant costs, such as costs related to organizational changes, implementing additional protection technologies, training associates and engaging consultants, which are likely to increase over time. In addition, itsuch requirements may be difficult forrequire us to raise additional capital asmodify our data processing practices and when we need it. If we are unable to do so,policies, distract management or divert resources from other initiatives and projects, all of which could have a material adverse effect on our results of operations, financial condition and cash flows. Any failure or perceived failure by us to comply with any applicable federal, state or similar foreign laws and regulations relating to data privacy and security could result in damage to our reputation and our relationship with our customers, as well as proceedings or litigation by governmental agencies or customers, including class action privacy litigation in certain jurisdictions, which would subject us to significant fines, sanctions, awards, penalties or judgments, all of which could have a material adverse effect on our business, financial condition, results of operations could be materially and adversely affected.

We will remain an emerging growth company until the earliest of (i) the end of the fiscal year in which the market value of our common stock that is held by non-affiliates exceeds $700 million as of the end of the second fiscal quarter, (ii) the end of the fiscal year in which we have total annual gross revenue of $1 billion or more during such fiscal year, (iii) the date on which we issue more than $1 billion in non-convertible debt in a three-year period or (iv) December 31, 2018, the end of the fiscal year following the fifth anniversary of the first sale of our common equity securities pursuant to an effective registration statement filed under the Securities Act.
prospects.

ITEM 1B.  UNRESOLVED STAFF COMMENTS

None.

ITEM 2.  PROPERTIES

Our principal executive offices are located at 830 Morris Turnpike, 4th Floor, Short Hills, New Jersey 07078. We lease a facilitythe office in Brisbane, California.  The lease commencedShort Hills, New Jersey and another office in April 2016 and was to expire in March 2017. On February 16, 2017, we amended the lease to extend the term of the lease for an additional period of eighteen months such that the leaseBurlingame, California, which leases will expire on August 31, 2023 and September 30, 2018.

2022, respectively. We believe these leased offices are in satisfactory condition and are suitable for the conduct of our business. 

ITEM 3.  LEGAL PROCEEDINGS

Bankruptcy Proceedings
We

Please see Note 11 to the Consolidated Financial Statements for a summary of material pending legal proceedings. As further described in Note 11, one of our CMOs filed a demand for protection under Chapter 11 of Title 11 of the United States Code on December 29, 2015, in the United States Bankruptcy Court for the District of Delaware, or the Bankruptcy Court (Case No. 15-12628 (LSS).  Our Second Amended Plan of Reorganization, dated May 9, 2016, as amended, or the Plan, was approved by the Bankruptcy Court on June 16, 2016 and went effective on June 30, 2016, or the Effective Date.  As of the Effective Date, approximately 195 proofs of claim were outstanding (including claims that were previously identified on the Schedules) totaling approximately $32.0 million.

The reconciliation of certain proofs of claim filed against us in the Bankruptcy Case, including certain General Unsecured Claims, Convenience Class Claims and Other Subordinated Claims, is ongoing.  As a result of its examination of the claims, we may ask the Bankruptcy Court to disallow, reduce, reclassify or otherwise adjudicate certain claims we believe are subject to objection or otherwise improper.  Under the terms of the Plan, we had until December 27, 2016 to file additional objections to disputed claims, subject to our right to seek an extension of this deadline from the Bankruptcy Court.  By Order, dated February 6, 2017, the Bankruptcy Court extended the claims objection deadline to June 26, 2017. By Order dated July 10, 2017, the Bankruptcy Court extended the claims objection deadline to September 25, 2017. By Order dated October 23, 2017, the Bankruptcy Court extended the claims objection deadline to December 26, 2017.  By Order dated January 19, 2018, the Bankruptcy Court extended the claims objection deadline to March 26, 2018.  We may compromise certain claims with or without specific prior approval of the Bankruptcy Court as set forth in the Plan and may identify additional liabilities that will need to be recorded or reclassified to liabilities subject to compromise. The resolution of such claims could result in material adjustments to our financial statements.

As of December 31, 2017, approximately $0.5arbitration, claiming more than $20.5 million in claims remain subject to review and reconciliation. We may file objections to these claims after we complete the reconciliation process. As of December 31, 2017, we have recorded $0.06 million related to these claims in Accounts payable and Notes payable to vendors, which represents our best estimate of claims to be allowed by the Bankruptcy Court.

Savant Litigation

On July 10, 2017, we filed a complaint against Savant Neglected Diseases, LLC (“Savant”) in the Superior Courtdamages. The demand is for the State of Delaware, New Castle County (the “Delaware Court”).  KaloBios Pharmaceuticals, Inc. v. Savant Neglected Diseases, LLC, No. N17C-07-068 PRW-CCLD.  We asserted breach of contract and declaratory judgmenttrade defamation relating to their inability to perform. The CMO claims that we cancelled the contract after the CMO was unable to successfully produce any full batches of lenzilumab BDS, but that we still owe the full amount due under the contract for all batches never produced. The CMO blamed its failed attempts on a subcontractor. To date, we have paid this CMO $10.6 million, despite it not being able to produce any full BDS batches. We intend to vigorously defend against these claims and to assert our own claims against Savant arising under the MDC Agreement. See Note 6 - “Savant Arrangements” to the accompanying condensed consolidated financial statements for more information about the MDC Agreement.  We allege that Savant has breached its MDC Agreement obligations to pay cost overages that exceed a budgetary threshold as well as other related MDC Agreement representations and obligations. In the litigation, we have alleged that as of June 30, 2017, Savant was responsible for aggregate cost overages of approximately $3.4 million, net of a $0.5 million deductible under the MDC.   We assert that we are entitled to offset $2.0 million in milestone payments due Savant against the cost overages, such that as of June 30, 2017 Savant owed us approximately $1.4 million.

On July 12, 2017, Savant removed the case to the United States District Court for the District of Delaware, claiming that the action is related to or arises under the bankruptcy court case from which we emerged in July 2016. On July 27, 2017, Savant filed an Answer and Counterclaims.  Savant’s filing alleges breaches of contracts under the MDC Agreement and the Security Agreement, claiming that we breached its obligations to pay the milestone payments and other related representations and obligations.

On August 1, 2017, we moved to remand the case back to the Delaware Superior Court. Briefing on that motion is completed and awaiting determination by the Bankruptcy Court.

On August 2, 2017, Savant sent a foreclosure notice to us, demanding that we provide the Collateral as defined in the Security Agreement for inspection and possession on August 9, 2017, with a public sale to be held on September 1, 2017.  We moved for a Temporary Restraining Order, or TRO, and Preliminary Injunction in the bankruptcy court on August 4, 2017.  Savant responded on August 7, 2017.  On August 7, 2017, the bankruptcy court granted our motion for a TRO, entering an order prohibiting Savant from collecting on or selling the Collateral, entering our premises, issuing any default notices to us, or attempting to exercise any other remedies under the MDC Agreement or the Security Agreement.  The parties have stipulated to continue the provisions of the TRO in full force and effect until further order of the appropriate court.
On January 22, 2018, Savant wrote to the Bankruptcy Court requesting dissolution of the TRO.  On January 29, 2018, the Bankruptcy Court granted the Motion to Remand and denied Savant’s request to dissolve the TRO, ordering that any request to dissolve the TRO be made to the Delaware Superior Court.
On February 13, 2018 Savant made a letter request to the Delaware Superior Court to dissolve the TRO.  Also on February 13, 2018, Humanigen filed its Answer and Affirmative defenses to Savant’s Counterclaims.  On February 15, 2018 Humanigen filed a letter opposition to Savant’s request to dissolve the TRO and requesting a status conference.  There have been no further proceedings in this matter to date.
BioWa, Inc. Litigation

On October 17, 2016, Kyowa Hakko Kirin Co., Ltd. and BioWa, Inc. filed a patent infringement Complaint in the U.S. District Court for the Northern District of California against Aragen Bioscience, Inc. and Transposagen Biopharmaceuticals, Inc. ("Defendants"), alleging infringement of three United States Patents that are currently licensed to Humanigen, Inc. (Captioned as Kyowa Hakko Kirin Co. Ltd. and BioWa, Inc. v. Aragen Bioscience, Inc. and Transposagen Biopharmaceuticals, Inc., Case No. 3:16-cv-05993-JD (N.D. Cal.)). On January 17, 2017, the Defendants filed an Amended Answer and Counterclaims. One of the Defendants’ counterclaims sought a declaratory judgment that the three asserted patents are invalid. Since then, the litigation has been ongoing and trial is scheduled to begin on June 25, 2018. Fact discovery recently closed, and expert discovery is currently taking place. No dispositive motions have yet been filed. In April 2017, Defendants filed petitions in the U.S. Patent and Trademark Office ("USPTO") for inter partes review ("IPR") of the same three patents asserted in the district court patent infringement litigation. In October 2017, the USPTO's Patent Trial and Appeal Board ("PTAB") declined to institute IPR of the patents, holding that Defendants had not shown a reasonable likelihood that they would prevail in showing the unpatentability of even one of the challenged patent claims. In November 2017, Defendants filed requests for rehearing of the PTAB's decision not to institute IPR, and the PTAB denied those requests as well. The PTAB's decision cannot be appealed.
 Releases, Exculpation, Injunction and Discharge Provisions

Section 10.3 of the Plan provides certain releases, including the following: (i) releases by us, subject to certain exclusions, of claims and causes of action against (a) our officers, directors, employees, advisors and certain related persons who acted in such capacity on or after the Petition Date and (b) the Black Horse Entities and Nomis, as well as their respective current and former directors and officers, partners, advisors and certain other related parties, or collectively, the Released Parties; (ii) releases by holders of claims and interests, subject to certain exclusions, of claims and causes of action against us and Released Parties; (iii) mutual releases between us and the PIPE Claimants, for the benefit of each and certain related parties, as contemplated by the PIPE Settlement; and (iv) releases as contemplated by the Securities Class Action Settlement. All our claims and causes of action or those of our bankruptcy estate not expressly released by us under the Plan or pursuant to another Bankruptcy Court order are expressly reserved to us under the Plan.

The Plan also contains certain exculpation provisions, which include exculpation from liability, subject to certain exceptions for acts and omissions that are the result of willful misconduct or gross negligence, in favor of us and our directors, officers, employees, advisors and certain other related persons and entities who served in such capacity on or after the Petition Date relating to the bankruptcy proceedings, the negotiation and formulation of the Plan and the related disclosure statement, and the confirmation, consummation and administration of the Plan.

The Plan provides for a discharge of all claims against us to the fullest extent provided under section 1141(d)(1)(A) of the Bankruptcy Code.

Additional Information

For additional information on the foregoing bankruptcy proceeding, including with respect to our bankruptcy related financing arrangements, our arrangements with Savant and details on the Governance Agreement, see Note 2, 6 and 10 to our Consolidated Financial Statements included in Part II, Item 8, “Financial Statements and Supplementary Data” of this Annual Report on Form 10-K, which are incorporated by reference into this Item.

CMO.

ITEM 4.  MINE SAFETY DISCLOSURES

Not applicable.

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None.

PART II

ITEM 5.  MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES

Market Information

Our common stock is currently quotedlisted on the OTCQB VentureNasdaq Capital Market operated by OTC Markets Group, Inc. under the symbol “HGEN”. From January 13, 2016 to June 25, 2017, our common stock was quoted on the OTC Pink marketplace operated OTC Markets Group, Inc. Previously, our common stock was listed on the NASDAQ Global Market under the symbol “KBIO” from its beginning of trading on January 31, 2013 through January 13, 2016.  Prior to January 31, 2013, there was no public market for our common stock.

The following table sets forth the high and low intraday sale prices per share of our common stock for the quarterly periods beginning January 1, 2016 through January 13, 2016 as reported by The NASDAQ Global Market. The following table also sets forth the high and low intraday sales prices per share of our common stock for the quarterly periods beginning January 14, 2016 through December 31, 2017 based on information provided by OTC Markets Group, Inc. The over-the-counter market quotations set forth for our common stock reflect  inter-dealer prices, without retail mark-up, mark-down or commission and may not necessarily represent actual transactions.
  High  Low 
2017      
4th Quarter $1.00  $0.13 
3rd Quarter $2.60  $0.23 
2nd Quarter $2.98  $1.51 
1st Quarter $4.50  $1.90 
         
2016        
4th Quarter $4.75  $2.17 
3rd Quarter $6.00  $3.18 
2nd Quarter $8.70  $2.51 
1st Quarter $23.59  $1.02 
Holders of Common Stock
As of March 23, 2018,February 16, 2022, we had 109,207,78665,329,177 shares of common stock outstanding held by approximately 43 33 stockholders of record. The actual number of stockholders is greater than this number of record holders, and includes stockholders who are beneficial owners, but whose shares are held in street name by brokers and other nominees.
Dividend Policy
We

Reverse Stock Split

Effective as of 4:30 p.m. Eastern Time on September 11, 2020, we amended our charter to effect a reverse stock split at a ratio of 1-for-5. Unless stated otherwise, all share data in this Annual Report on Form 10-K have never declared or paid any cash dividends. We currently expectbeen adjusted, as appropriate, to retain all future earnings, if any, for use inreflect the operation and expansion of our business, and therefore do not anticipate paying any cash dividends in the foreseeable future.  

reverse stock split.

ITEM 6.  SELECTED FINANCIAL DATA

Information requested by this Item is not applicable as we are electing scaled disclosure requirements available to Smaller Reporting Companies with respect to this Item. 
RESERVED

ITEM 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

You should read the following discussion and analysis of our financial condition and results of operations together with our Consolidated Financial Statementsconsolidated financial statements and therelated notes thereto includedand other financial information appearing elsewhere in this Annual Report on Form 10‑K. This10-K. Some of the information contained in this discussion contains forward‑lookingand analysis or set forth elsewhere in this Annual Report on Form 10-K, including information with respect to our plans and strategy for our business, includes forward-looking statements that involve risks and uncertainties. For additional discussion, see “SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS” above.

Overview
We were incorporated on March 15, 2000 in California and reincorporated as a Delaware corporation in September 2001 under the name KaloBios Pharmaceuticals, Inc. We completed our initial public offering in January 2013. Effective August 7, 2017, we changed our legal name to Humanigen, Inc.
We have undergone significant changes since December 2015. As a result of challenges facing us at the time, on December 29, 2015, we filed a voluntary petition for bankruptcy protection under Chapter 11 of Title 11 of the U.S. Bankruptcy Code. On June 30, 2016, our Second Amended Plan of Reorganization, dated May 9, 2016, as amended, or the Plan, became effective and we emerged from our Chapter 11 bankruptcy proceedings. For further information on our bankruptcy and emergence from bankruptcy, see Note 2 to our Consolidated Financial Statements includedmany factors, including those factors set forth in Part II,“Part I, Item 8, “Financial Statements and Supplementary Data”1A - Risk Factors” section of this Annual Report on Form 10-K, .
On January 13, 2016, our common stock was suspendedactual results could differ materially from the Nasdaq Global Market and began trading on the over-the-counter market under the ticker symbol KBIOQ.  On January 26, 2016, NASDAQ filed a Form 25 with the Securities and Exchange Commission to complete the delisting of our common stock, and the delisting was effective on February 5, 2016.  On June 30, 2016, upon emergence from bankruptcy, the ticker symbol for the trading of our common stock on the over-the-counter market reverted back to KBIO. On June 26, 2017 our common stock began trading on the OTCQB Venture Market under the same ticker symbol. On August 7, 2017, following effectiveness of our previously reported name change to Humanigen, Inc., our common stock began trading on the OTCQB Venture Market under the new ticker symbol “HGEN”.

From the time of our emergence from bankruptcy to August 29, 2017, our lead product candidate was benznidazole for the treatment of Chagas disease, a parasitic illness that can lead to long-term heart, intestinal and neurological problems. On June 30, 2016, we acquired certain worldwide rights to benznidazole from Savant Neglected Diseases, LLC,results described in or Savant, and until August 29, 2017, we were primarily focused on the development necessary to seek and obtain approvalimplied by the United States Foodforward-looking statements contained in the following discussion and Drug Administration, or FDA, for benznidazole and the subsequent commercialization, if approved.  According to FDA-issued guidance, benznidazole is eligible for review pursuant toanalysis.

Overview

We are a 505(b)(2) regulatory pathway as a potential treatment for Chagas disease and, if it became the first FDA-approved treatment for Chagas disease, we would have been eligible to receive a Priority Review Voucher (“PRV”).


However, on August 29, 2017, the FDA announced it had granted accelerated and conditional approval of a benznidazole therapy manufactured by Chemo Research, S.L., or Chemo, for the treatment of Chagas disease and had awarded that manufacturer a neglected tropical disease PRV. Chemo’s benznidazole also received Orphan Drug designation. As a result of FDA’s actions and because we no longer expected to be eligible to receive a PRV with our own benznidazole candidate for the treatment of Chagas disease, we immediately ceased development for benznidazole and began assessing a full range of options with respect to our benznidazole assets and development program. We also began an accelerated scientific assessment of emerging new possibilities for our monoclonal antibody assets and development programs

On December 21, 2017, we reached an agreement with our Term Loan Lenders (as defined below) on a series of transactions, including the transfer and assignment of all of our assets related to benznidazole to an affiliate of one of the Term Loan Lenders, providing for, among other things, the satisfaction and extinguishment of our outstanding obligations under our Term Loan Credit Agreement (as defined below). We refer to these transactions herein as the “Restructuring Transactions.” On February 27, 2018, we completed the Restructuring Transactions. For further information regarding the Restructuring Transactions, see “Liquidity and Capital Resources” and “Item 1. Business – Restructuring Transactions.”

Since the FDA’s August 29, 2017 announcement relating to benznidazole, we have shifted our primary focus towardclinical stage biopharmaceutical company, developing our portfolio of proprietary Humaneered® anti-inflammatory immunology and immuno-oncology monoclonal antibody portfolio, which comprises lenzilumab (formerly known as KB003) and ifabotuzumab (formerly known as KB004), for use in addressing significant unmet needs in oncology. Both of these product candidates are in the early stage of development and will require substantial time, expenses, clinical development, testing, and regulatory approval prior to commercialization. Furthermore, neither of these product candidates has advanced into a pivotal registration study and it may be years before such a study is initiated, if at all.

Lenzilumabantibodies. Our proprietary, patented Humaneered technology platform is a recombinant monoclonal antibody, or mAb, that neutralizes soluble granulocyte-macrophage colony-stimulating factor, or GM-CSF, a critical cytokine in the inflammatory cascade associated with CAR-T-related side effects and in the growth of certain hematologic malignancies, solid tumors and other serious conditions. We expect to study lenzilumab’s potential in reducing serious and life-threatening adverse events associated with CAR-T therapy. We have begun to explore lenzilumab’s effectiveness in preventing or ameliorating neurotoxicity associated with CAR-T therapy, and potentially cytokine release syndrome or CRS. In addition, we continue dosing in a Phase 1 clinical trial in patients with CMML to identify the maximum tolerated dose, or MTD, or recommended Phase 2 dose of lenzilumab and to assess lenzilumab’s safety, pharmacokinetics, and clinical activity.  We have fully enrolled the total of 12 patients in the 200, 400 and 600 mg dose cohorts of our CMML trial, and are currently evaluating subjects in the highest dose cohort of 600 mgmethod for continuing accrual. We also plan to review preliminary safety and efficacy results and anticipate completion of the ad hoc interim analysis in the first half of 2018. We may also use the interim data from the lenzilumab CMML Phase 1 study to determine the feasibility of rapidly commencing a Phase 1 study in JMML patients, or to explore progressing directly the CMML development program. JMML is a rare pediatric cancer, is associated with a very high unmet medical need and there are no FDA-approved therapies.

Ifabotuzumab is an anti-Ephrin Type-A receptor 3, or EphA3, mAb that has the potential to offer a novel approach to treating solid tumors and hematologic malignancies, serious pulmonary conditions and as a CAR construct. EphA3 is aberrantly expressed on the surface of tumor cells and stroma cells in certain cancers. We have completed the Phase 1 dose escalation portion of a Phase 1/2 clinical trial in ifabotuzumab in multiple hematologic malignancies for which the preliminary results were published in the journal Leukemia Research in 2016.  An investigator-sponsored Phase 0/1 radio-labeled imaging trial of ifabotuzumab in glioblastoma multiforme, a particularly aggressive and deadly form of brain cancer, has begun at the Olivia-Newton John Cancer Institute in Melbourne, Australia.   We are currently exploring partnering opportunities to enable further development of ifabotuzumab.

 Lenzilumab and ifabotuzumab were each developed with our proprietary, patent-protected Humaneered® technology, which consists of methods for converting existing antibodies (typically murine) into engineered, high-affinity human antibodies designed for human therapeutic use, typically forparticularly with acute and chronic conditions.

We have incurreddeveloped or in-licensed targets or research antibodies, typically from academic institutions, and then applied our Humaneered technology to optimize them. Our lead product candidate, lenzilumab (known as “LENZ” in the U.S.), and our other two product candidates, ifabotuzumab (“iFab”) and HGEN005, are Humaneered monoclonal antibodies. Our Humaneered antibodies are closer to human antibodies than chimeric or conventionally humanized antibodies and have a high affinity for their target. In addition, we believe our Humaneered antibodies offer further important advantages, such as high potency, a slow off-rate and a lower likelihood to induce an inappropriate immune response or infusion related reaction.

We are focusing our efforts on the development of our lead product candidate, lenzilumab. Lenzilumab is a monoclonal antibody that has been demonstrated to neutralize human granulocyte-macrophage colony-stimulating factor (“GM-CSF”), a cytokine that we believe is of critical importance in the hyperinflammatory cascade, sometimes referred to as cytokine release syndrome (“CRS”) or cytokine storm, associated with COVID-19, chimeric antigen receptor T-cell (“CAR-T”) therapy and acute Graft versus Host Disease (“aGvHD”) associated with bone marrow transplants.

We have completed a Phase 3 registrational trial with lenzilumab in newly hospitalized COVID-19 patients and announced positive topline data from the study known as “LIVE-AIR” in March 2021. Following completion of the LIVE-AIR study, we commenced a series of efforts to attain authorization to commercialize lenzilumab for use in hospitalized COVID-19 patients in the United States and other territories. We filed an application for Emergency Use Authorization (“EUA”) with U.S. Food and Drug Administration (“FDA”) at the end of May 2021. We also submitted an application for marketing authorization of lenzilumab in hospitalized COVID-19 patients to Medicines and Healthcare products Regulatory Agency (“MHRA”) of the United Kingdom and conducted a series of exploratory discussions with representatives of European Medicines Agency (“EMA”) regarding our potential submission of lenzilumab for marketing authorization in the European Union. In addition, we commenced significant lossesmanufacturing efforts in support of potential commercialization, as described in “Item 1. Business—Manufacturing and had an accumulated deficitRaw Materials.”

On September 8, 2021, FDA declined our EUA request, stating in its letter that it was unable to conclude that the known and potential benefits of $262.5 millionlenzilumab outweigh the known and potential risks of its use as of December 31, 2017.  We expecta treatment for COVID-19. In addition to raising similar concerns around efficacy, MHRA requested further information related to clinical, manufacturing and quality processes. Despite these regulatory setbacks, we continue to incur net lossesbelieve in its potential therapeutic benefits and remain committed to bringing lenzilumab to patients hospitalized with COVID-19.

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The next anticipated step in our development program for lenzilumab in COVID-19 is the release of results from the Accelerating COVID-19 Therapeutic Interventions and Vaccines (“ACTIV”)-5 and Big Effect Trial, in the “B” arm of the trial (“BET-B”), referred to as the ACTIV-5/BET-B trial, which is sponsored and funded by the National Institutes of Health (“NIH”). This study is evaluating lenzilumab in combination with remdesivir, compared to placebo and remdesivir, in hospitalized COVID-19 patients, as more fully described below. We provided lenzilumab for the foreseeable futurestudy.

A retrospective analysis of the LIVE-AIR study suggested that patients under the age of 85 and with a baseline CRP below 150 mg/L (the “CRP subgroup”) appeared to derive the greatest benefit from lenzilumab, therefore, the ACTIV-5/BET-B study protocol was modified to include baseline CRP below 150 mg/L as the primary analysis population. The ACTIV-5/BET-B study has reached its target enrollment with over 400 patients enrolled that met this criterion. Topline results from ACTIV-5/BET-B are expected to be released late in the first quarter or early in the second quarter of 2022. If confirmatory of the findings of the CRP subgroup from the LIVE-AIR study, we developplan to include the results from ACTIV-5/BET-B in an amendment to EUA submission, and to include these results in a responsive submission to MHRA along with certain performance process qualification (“PPQ”) data around drug product batches, in the second quarter of 2022. In addition, as a result of feedback received from representatives of EMA, if the ACTIV-5/BET-B data are confirmatory of the results of the findings of the CRP subgroup from the LIVE-AIR study, we intend to submit a Conditional Marketing Authorization (“CMA”) for lenzilumab with an Accelerated Approval request to EMA later in 2022.

We believe that we have built a strong intellectual property position in the area of GM-CSF neutralization through multiple approaches and mechanisms, as they pertain to COVID-19, CAR-T, aGvHD and multiple other oncology/transplantation, inflammation, fibrosis and autoimmune conditions which may be driven by GM-CSF.

Development Programs

In addition to our drug candidates, expand clinical trials for our drug candidates currently in clinical development, expandlead product candidate, lenzilumab, our development activities and seek regulatory approvals. Significant capital is required to continue to develop and to launch a product and many expenses are incurred before revenue is received, if any. We are unable to predict the extent of any future losses or when we will receive revenue or become profitable, if at all.

Despite completing the Restructuring Transactions, we will require substantial additional capital to continue as a going concern and to supportportfolio features our business efforts, including obtaining regulatory approvals for ourother two product candidates, clinical trialsifabotuzumab and other studies, and, if approved, the commercializationHGEN005, all of our product candidates. We anticipate that we will seek additional financing fromwhich are Humaneered monoclonal antibodies. Please refer to “Item 1. Business—Our Pipeline” for a number of sources, including, but not limited to, the sale of equity or debt securities, strategic collaborations, and licensing of our product candidates. Additional funding may not be available to us on a timely basis or at acceptable terms, if at all. Our ability to access capital when needed is not assured and, if not achieved on a timely basis, would materially harm our business, financial condition and results of operations. If adequate funds are not available, we may be required to delay, reduce the scope of, or eliminate one or moredetailed discussion of our development programs. We may also be required to sell or license to others our technologies, product candidates, or development programs that we would have preferred to develop and commercialize ourselves and on less than favorable terms, if at all. If in the best interests of our stockholders, we may also find it appropriate to enter into a strategic transaction that could result in, among other things, a sale, merger, consolidation or business combination.
If management is unsuccessful in efforts to raise additional capital, based on our current levels of operating expenses, our current capital is not expected to be sufficient to fund our operations for the next twelve months.  These conditions raise substantial doubt about our ability to continue as a going concern. The Report of Independent Registered Public Accounting Firm at the beginning of the consolidated financial statements included in Part II, Item 8, “Financial Statements and Supplementary Data” of this Annual Report on Form 10-K includes an explanatory paragraph about our ability to continue as a going concern.
The consolidated financial statements for the year ended December 31, 2017 were prepared on the basis of a going concern, which contemplates that we will be able to realize our assets and discharge liabilities in the normal course of business.  Our ability to meet our liabilities and to continue as a going concern is dependent upon the availability of future funding.  The financial statements do not include any adjustments that might be necessary if we are unable to continue as a going concern.

Critical Accounting Policies and Use ofCritical Accounting Estimates

Our management’s discussion and analysis of our financial condition and results of operations is based on our consolidated financial statements,Consolidated Financial Statements, which have been prepared in accordance with accounting principles generally accepted in the United States,U.S., or GAAP. The preparation of our financial statements in conformity with GAAP requires our management to make estimates and assumptions that affect the amounts and disclosures reported in the consolidated financial statementsConsolidated Financial Statements and accompanying notes. Actual results could differ materially from those estimates. Our management believes judgment is involved in determining revenue recognition, valuation of financing derivative, the fair value‑basedvalue-based measurement of stock‑basedstock-based compensation accruals and warrant valuations.accruals. Our management evaluates estimates and assumptions as facts and circumstances dictate. As future events and their effects cannot be determined with precision, actual results could differ from these estimates and assumptions, and those differences could be material to the consolidated financial statements.Consolidated Financial Statements. If our assumptions change, we may need to revise our estimates, or take other corrective actions, either of which may also have a material adverse effect on our statements of operations, liquidity and financial condition.

We are an emerging growth company under the JOBS Act. Emerging growth companies can delay adopting new or revised accounting standards until such time as those standards apply to private companies. We have elected to avail ourselves of this exemption from new or revised accounting standards and, therefore, we may not be subject to the same new or revised accounting standards as other public companies that are not emerging growth companies.

While our significant accounting policies are described in more detail in Note 32 to our consolidated financial statementsConsolidated Financial Statements included in Part II, Item 8, “Financial Statements and Supplementary Data” of this Annual Report on Form 10-K, we believe the following accounting policies to be critical to the judgments and estimates used in the preparation of our financial statements.

Accrued Research and Development Expenses

As part of the process of preparing our consolidated financial statements,Consolidated Financial Statements, we are required to estimate our accrued research and development expenses. This process involves reviewing contracts and purchase orders, reviewing the terms of our license agreements, communicating with our applicable personnel to identify services that have been performed on our behalf, and estimating the level of service performed and the associated cost incurred for the service when we have not yet been invoiced or otherwise notified of actual cost. Some of our service providers invoice us monthly in arrears for services performed. We make estimates of our accrued expenses as of each balance sheet date based on facts and circumstances known to us at that time. Examples of estimated accrued research and development expenses include fees to:

·contract research organizations and other service providers in connection with clinical studies;
·contract manufacturers in connection with the production of clinical trial materials;lenzilumab, including cancellation and termination charges and charges for product that does not meet specifications; and
·vendors in connection with preclinical development activities.

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We base our expenses related to clinical studies on our estimates of the services received and efforts expended pursuant to contracts with multiple research institutions and contract research organizations that conduct and manage clinical studies on our behalf. The financial terms of these agreements are subject to negotiation, vary from contract to contract, and may result in uneven payment flows and expense recognition. Payments under some of these contracts depend on factors such as the successful enrollment of patients and the completion of clinical trial milestones. In accruing these costs, we estimate the time period over which services will be performed for which we have not been invoiced and the level of effort to be expended in each period. If the actual timing of the performance of services or the level of effort varies from our estimate, we adjust the accrual accordingly. Our understanding of the status and timing of services performed relative to the actual status and timing of services performed may vary and may result in our reporting changes in estimates in any particular period.

Stock‑Based

Stock-Based Compensation

Our stock‑basedstock-based compensation expense for stock options is estimated at the grant date based on the award’s fair value as calculated by the Black‑ScholesBlack-Scholes option pricing model and is recognized as expense over the requisite service period. The Black‑ScholesBlack-Scholes option pricing model requires various highly judgmental assumptions including expected volatility and expected term. The expected volatility is based on the combined historical stock volatilities of our own common stock and that of several of our publicly listed peers over a period equal to the expected terms of the options as we do not have a sufficient trading history to userely solely on the volatility of our own common stock. To estimate the expected term, we have opted to use the simplified method, which is the use of the midpoint of the vesting term and the contractual term. If any of the assumptions used in the Black‑ScholesBlack-Scholes option pricing model changes significantly, stock‑basedstock-based compensation expense may differ materially in the future from that recorded in the current period. In addition, we are required to estimate the expected forfeiture rate and only recognize expense for those shares expected to vest. We estimate the forfeiture rate based on historical experience and our expectations regarding future pre‑vestingpre-vesting termination behavior of employees. To the extent our actual forfeiture rate is different from our estimate, stock‑basedstock-based compensation expense is adjusted accordingly.

Revenue Recognition

Our contract revenue to date has been generated primarily through license agreements and research and development collaboration agreements. ContractWe have recorded revenue may include nonrefundable, non‑creditable upfront fees, fundingfrom licensing of $3.6 million and $0.3 million for researchthe years ending December 31, 2021 and development efforts, and milestone or other contingent payments for achievements with regards to our licensed products. We did not materially modify any previous material collaboration agreements or enter into any new such agreements from 2011 through the end of 2016.  All collaboration agreements have been accounted for2020, respectively. Commencing January 1, 2018, we recognize revenue in accordance with the accounting guidance applicable to such arrangements prior to our adoption of Accounting Standards Update (“ASU”) 2014-09, “Revenue from Contracts with Customers (Topic 606)” (“ASC 606”). The core principle of ASC 606 is that an entity should recognize revenue to depict the transfer of promised goods and/or ASU, 2009‑13, Multiple‑Deliverable Revenue Arrangements,services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods and/or services. To determine the appropriate amount of revenue to be recognized for arrangements that we determine are within the scope of ASC 606, we perform the following steps: (i) identify the contract(s) with the customer, (ii) identify the performance obligations in the contract, (iii) determine the transaction price, (iv) allocate the transaction price to the performance obligations in the contract and ASU 2010‑17, Revenue Recognition—Milestone Method, each of which we adopted on a prospective basis on January 1, 2011.

We(v) recognize revenue when persuasive(or as) each performance obligation is satisfied.

Revenue under technology licenses and collaborative agreements typically consists of nonrefundable and/or guaranteed license fees, collaborative research funding, and various milestone and future product royalty or profit-sharing payments.

The fair value of deliverables under the arrangement may be derived using a best estimate of selling price if vendor specific objective evidence and third-party evidence is not available. Deliverables under the arrangement will be separate units of anaccounting if a delivered item has value to the customer on a standalone basis and if the arrangement exists, transferincludes a general right of technologyreturn for the delivered item, delivery or performance of the undelivered item is considered probable and substantially in our control.

We recognize upfront license payments as revenue upon delivery of the license only if the license has been completed,standalone value from any undelivered performance obligations and that value can be determined. The undelivered performance obligations typically include manufacturing or development services or research and/or steering committee services. If the fair value of the undelivered performance obligations can be determined, then these obligations would be accounted for separately. If the license is not considered to have been performed or products have been delivered,standalone value, then the fee is fixedlicense and determinable, and collection is reasonably assured.

For multiple element arrangements, we evaluate whether the components of each arrangement are toother undelivered performance obligations would be accounted for as separate unitsa single unit of accounting. In this case, the license payments and payments for performance obligations are recognized as revenue over the estimated period of when the performance obligations are performed or deferred indefinitely until the undelivered performance obligation is determined.

Whenever we determine that an arrangement should be accounted for as a single unit of accounting, based on certain criteria. Upfrontwe determine the period over which the performance obligations will be performed, and revenue will be recognized. Revenue is recognized using a proportional performance or straight-line method. The proportional performance method is used when the level of effort required to complete performance obligations under an arrangement can be reasonably estimated. The amount of revenue recognized under the proportional performance method is determined by multiplying the total payments for licensing our intellectual propertyunder the contract, excluding royalties and payments contingent upon achievement of milestones, by the ratio of the level of effort performed to date haveto the estimated total level of effort required to complete performance obligations under the arrangement. If we cannot reasonably estimate the level of effort to complete performance obligations under an arrangement, we recognize revenue under the arrangement on a straight-line basis over the period we are expected to complete our performance obligations. Significant management judgment is required in determining the level of effort required under an arrangement and the period over which we are expected to complete our performance obligations under an arrangement.

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Our collaboration agreements typically entitle us to additional payments upon the achievement of development, regulatory and sales performance-based milestones. If the achievement of a milestone is considered probable at the inception of the collaboration, the related milestone payment is included with other collaboration consideration, such as upfront fees and research funding, in our revenue calculation. Typically, these milestones are not been separable fromconsidered probable at the activityinception of providing researchthe collaboration. As such, milestones will typically be recognized in one of two ways depending on the timing of when the milestone is achieved. If the milestone is achieved during the performance period, then we will only recognize revenue to the extent of the proportional performance achieved at that date, or the proportion of the straight-line basis achieved at that date, and development services because the license has not been assessed to have stand‑alone value separate from the research and development services provided. Such upfront payments areremainder will be recorded as deferred revenue in the balance sheet and are recognized as contract revenueto be amortized over the contractual or estimated substantiveremaining performance period, which is consistent with the term of the research and development obligations contained in the research and development collaboration agreement.

Payments resulting from our research and development efforts under license agreements are recognized as the activities are performed and are presented on a gross basis. Revenue is recorded gross because we act as a principal, with discretion to choose suppliers, bear credit risk, and perform part of the services.
Substantive, at‑risk milestone payments are recognized as revenue whenperiod. If the milestone is achieved after the performance period has completed and collectability is reasonably assured. When contingent payments are not for substantive and at‑risk milestones, revenue is recognized over the estimated remaining term of the related service period or, if there are no continuingall performance obligations under the arrangement, upon receipt provided that collection is reasonably assured and other revenue recognition criteria have been satisfied.
Financial Reportingdelivered, then we will recognize the milestone payment as revenue in Reorganization
Liabilities subject to compromise is our estimate of known or potential pre-petition claims to be resolved in connection with our Chapter 11 bankruptcy case (the “Bankruptcy Case”). Such claims remain subject to future adjustments. Payment terms for liabilities subject to compromise are established as part of the Plan.
We applied Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) 852, Reorganizations, which is applicable to companies under bankruptcy protection, and requires amendments to the presentation of key financial statement line items. It requires that the financial statements for periods subsequent to the Chapter 11 filing distinguish transactions and events that are directly associated with the reorganization from the ongoing operations of the business. Revenues, expenses, realized gains and losses, and provisions for losses that can be directly associated with the reorganization and restructuring of the business must be reported separately as reorganization itemsits entirety in the Consolidated Statements of Operations and Comprehensive Loss. The balance sheet must distinguish pre-petition liabilities subject to compromise from both those pre-petition liabilities that are not subject to compromise and from post-petition liabilities. Liabilities that may be subject to a plan of reorganization must be reported atperiod the amounts expected to be allowed in the Company’s Chapter 11 case, even if they may be settled for lesser amounts as a result of the plan of reorganization or negotiations with creditors. In addition, cash used by reorganization items are disclosed separately in the Consolidated Statements of Cash Flow.
In conjunction with our exit from bankruptcy on June 30, 2016, we reclassified $4.8 million of Liabilities subject to compromise in the amounts of $2.8 million, $0.8 million and $1.2 million to Accounts payable, Accrued expenses and Notes payable to vendors, respectively. For the year ended December 31, 2016, we paid approximately $3.4 million related to Liabilities subject to compromise, issued $1.2 million in promissory notes to vendors, wrote off approximately $0.3 million in deferred rent liabilities related to its lease termination and reversed approximately $0.1 million in accrued expenses related to a claim that has been denied by the court, which as discussed above, were previously included in Liabilities subject to compromise. As of December 31, 2016, approximately $0.4 million and $1.2 million remain in Accounts payable and Notes payable to vendors, respectively. As of December 31, 2017, approximately $0.06 million and $1.3 million remain in Accounts payable and Notes payable to vendors, respectively. Remaining amounts will be paid based on terms of the Plan.

Reorganization items, net consisted of the following charges ($000’s):
  Year ended December 31, 
  2017  2016 
Legal fees $297  $4,870 
Professional fees  34   1,218 
Debtor-in-possession financing  costs  -   1,143 
Beneficial conversion on debtor-in-possession financing  -   484 
Fair value of shares issued to officer and directors for service in bankruptcy  -   700 
Gain on lease termination  -   (227)
Total reorganization items, net $331  $8,188 
milestone was achieved.

Recently Issued Accounting Pronouncements

 For a discussion

A description of newrecently issued accounting pronouncements seethat may potentially impact our financial position and results of operations is set forth in Note 3, Summary of Significant Accounting Policies in the notes2 to the consolidated financial statementsour Consolidated Financial Statements included elsewhere in this Annual Report on Form 10‑K.

10-K. We do not believe that the impact of recently issued standards that are not yet effective will have a material impact on our financial position or results of operations upon adoption.

Results of Operations

General
We have not generated net income from operations, except for the year ended December 31, 2007, during which we recognized a one‑time license payment from Novartis.

At December 31, 2017,2021, we had an accumulated deficit of $262.5$611.1 million, primarily as a result of research and development and general and administrative expenses as well as costs incurredexpenses. Since inception, we have recognized a nominal amount of revenue from payments for license or collaboration fees, $3.6 million of which was recognized in reorganization.the year ended December 31, 2021. While we may in the future generate additional revenue from a variety of sources, including license fees, milestone payments, and research and development payments in connection with strategic partnerships, our product candidates are at an early stage of development and may never be successfully developed or commercialized.commercialized and we may therefore never realize revenue from any product sales. Accordingly, we expect to continue to incur substantial losses from operations for the foreseeable future, and there can be no assurance that we will ever generate significant revenue or profits.

Comparison of Years Ended December 31, 2021 and 2020

The following table summarizes the results of our operations for the periods indicated (amounts in thousands, except percentages): 

  Year Ended December 31,  Increase/ (Decrease) 
  2021  2020  Amount  % 
Revenue:            
License revenue $3,595  $312  $3,283   1,052 
Total revenue  3,595   312   3,283   1,052 
                 
Operating expenses:                
Research and development  213,115   72,713   140,402   193 
General and administrative  23,252   15,797   7,455   47 
Total operating expenses  236,367   88,510   147,857   167 
                 
Loss from operations  (232,772)  (88,198)  (144,574)  164 
                 
Other expense:                
Interest expense  (2,264)  (1,336)  (928)  69 
Other expense, net  (1,613)  (1)  (1,612)   * 
Net loss $(236,649) $(89,535) $(147,114)  164 

* Percentage is not meaningful

Revenue

Revenue in the fiscal years ended December 31, 2021 and 2020 represents license revenue under the license agreement (the “South Korea Agreement”) with KPM and its affiliate, Telcon, (together with KPM, the “Licensee”), described in more detail in Note 3 to the Consolidated Financial Statements included in this Annual Report on Form 10-K. License revenue increased $3.3 million in 2021 from $0.3 million for the year ended December 31, 2020 to $3.6 million for the year ended December 31, 2021.

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Research and Development Expenses

Conducting research and development is central to our business model. We expense both internal and external research and development costs as incurred. We track external research and development costs incurred by project for each of our clinical programs. We began tracking our external costs by project beginning January 1, 2008, and we have continued to refine our systems and our methodology in tracking external research and development costs. Our external research and development costs consist primarily of:


·expenses incurred under agreements with contract research organizations, investigative sites, and consultants that conduct our clinical trials and a substantial portion of our preclinicalpre-clinical activities;
·

the cost of acquiring and manufacturing clinical trial, pre-commercial and other materials;materials, the cost to transfer the manufacturing process for bulk drug substance and fill/finish production, development of and periodic performance of a variety of tests and assays for stability, release, comparability and product characterization, costs associated with quality management, the preparation of documents and information necessary to file with regulatory authorities, cancellation and termination charges and charges for failed batches; and

·other costs associated with development activities, including additional studies.

Other research and development costs consist primarily of internal research and development costs such as salaries and related fringe benefit costs for our employees, (such as workers compensation and health insurance premiums), stock‑basedstock-based compensation charges, travel costs, lab supplies, overhead expenses such as rent and utilities, and externaltravel costs not allocated to one of our clinical programs. Internal research and development costs generally benefit multiple projects and are not separately tracked per project.

The following table shows a summary of our total research and development expenses for the years ended December 31, 20172021 and 2016 ($000’s)2020 (in thousands):

  Year Ended December 31, 
  2017  2016 
External Costs      
   KB001 $-  $22 
   Lenzilumab  2,271   304 
   Ifabotuzumab  145   214 
   Benznidazole  6,959   5,543 
Internal costs  1,790   4,366 
Total research and development $11,165  $10,449 

  Year Ended December 31, 
(in thousands) 2021  2020 
External Costs      
Lenzilumab $210,129  $71,341 
Ifabotuzumab  112   225 
Internal costs  2,874   1,147 
Total research and development $213,115  $72,713 

Research and development expenses increased by $140.4 million from $72.7 million for the year ended December 31, 2020 to $213.1 million for the year ended December 31, 2021. The increase is primarily due to an increase of $143.9 million in lenzilumab manufacturing costs, including consulting fees, and a $1.7 million increase in internal costs, primarily compensation-related, partially offset by a $5.2 million reduction in clinical trial expenses for lenzilumab.

We expect our development costs will decrease in 2022 as compared to 2021. We have sought to mitigate our financial commitments while continuing to position lenzilumab for a future authorization or approval in the U.S., EU and UK. Our mitigation efforts included the amendment or in some cases cancelation of certain of our agreements with CMOs for future manufacturing work, some of which were contingent on EUA, in an effort to reduce our future spending. We incurred cancellation fees for several of these modifications. We also have disputed several invoices for cancellation fees and for production batches for lenzilumab that had been submitted by CMOs that failed to produce BDS within our stated release specifications, but our mitigation efforts may not be successful to recoup any such loss of lenzilumab BDS or DP. See Item 3. To this Annual Report on Form 10-K and Note 11 to the Consolidated Financial Statements included in this Annual Report on Form 10-K for more information on these disputes. In the event of authorization by MHRA, EMA, or FDA, we anticipate that the demand for commercial product could exceed the in-process and planned production of lenzilumab through 2022. We intend to seek additional manufacturing capacity if authorization is obtained. We expect to continueuse a portion of the revenues generated from commercial sale of lenzilumab following receipt of a regulatory authorization to incur substantial expenses relatedsupport our efforts to our researchexpand production capacity in 2023 and development activities for the foreseeable future as we continue product development including our development efforts for lenzilumab in the prevention of neurotoxicity and potentially CRS associated with CAR-T-cell treatment and in CMML.  Depending on the results of our development efforts we expect to incur substantial costs to prepare for potential clinical trials and activities for lenzilumab.


beyond.

General and Administrative Expenses

General and administrative expenses consist principally of personnel‑relatedpersonnel-related costs (including stock-based compensation), professional fees for legal and patent expenses, consulting, audit and tax services, rentpublic, governmental and investor relations costs, and other general operating expenses not otherwise included in research and development. For the years ended December 31, 2017 and 2016, general

57

General and administrative expenses were $7.increased by $7.5 million and $8.4 million, respectively.

Comparison of Years Ended December 31, 2017 and 2016 ($000’s)
  Year Ended December 31,  Increase/ (Decrease) 
  2017  2016  $'s  % 
Operating expenses:            
Research and development $11,165  $10,449  $716   7 
General and administrative  7,866   8,376   (510)  (6)
Loss from operations  (19,031)  (18,825)  206   1 
Interest expense  (3,056)  (131)  2,925   2,233 
Other income, net  431   125   306   245 
Reorganization items, net  (331)  (8,188)  (7,857)  (96)
Net loss $(21,987) $(27,019) $(5,032)  (19)
Research and development expenses increased $0.7 million in 2017 from $10.4$15.8 million for the year ended December 31, 20162020, to $11.2$23.3 million for the year ended December 31, 2017.2021. The increase for the year ended December 31, 2021, is primarily due to increases in consulting and other professional services fees of $6.4 million, personnel-related expenses of $2.9 million, including $2.3 million in non-cash stock-based compensation expense, primarily attributable to new hires since the first quarter of 2020, an increase of $0.8 million in business insurance, and other net increases in general and administrative expenses of $0.8 million, all in support of our increased spendingoperating activities to support the trial for COVID-19 and prepare for potential commercialization of $1.9 million on lenzilumab, primarily related to the CMML studypartially offset by a decrease in public and $1.4 million on benznidazole development for Chagas disease.investor relations expenses of $3.4 million. We expect our researchoverall general and development expenses willadministrative costs to decrease in 2018 compared to 2017, primarily due to the discontinuation of development of benznidazole.
Generalnear-term until and administrative expenses decreased $0.5if authorization is received in the UK, EU, or U.S.

Interest Expense

Interest expense increased $1.0 million in 2017 from $8.4$1.3 million for the year ended December 31, 20162020 to $7.9$2.3 million for the year ended December 31, 2017. The decrease2021. Interest expense for the year ended December 31, 2021 primarily related to the Loan and Security Agreement with Hercules Capital as agent for its affiliates serving as lenders thereunder (the “Term Loan”). On March 29, 2021, we borrowed $25.0 million under the Term Loan. See Note 5 to the Consolidated Financial Statements included in general and administrative expenses isthis Annual Report on Form 10-K for additional information on the Term Loan. Interest expense for the year ended December 31, 2020 primarily attributablerelated to lower insurance and accounting services costs. We expect our general and administrative expenses to continue to decrease in 2018 as compared to 2017 levels.


Reorganization items,our debt with proceeds from the private placement of our common stock.

Other Expense, net decreased $7.9 million in 2017, from $8.2

Other expense increased by $1.6 million for the year ended December 31, 20162021 as compared to $0.3 million for the year ended December 31, 2017.   Reorganization items, net for the year ended December 31, 20162020, primarily consisted of amounts incurred relateddue to the Plan in 2016, including legal fees of $4.9 million, $1.2 million in other professional fees, $0.7 million related to the fair value of common shares issue to our CEO and two directors for their service in bankruptcy, $1.1 million in legal and other costs related to the debtor-in-possession financing, $0.5 million related to the beneficial conversion expense recognized in connection with the debtor-in-possession financing, offset by a net gain on the termination of the South San Francisco lease of $0.2 million.  Reorganization items, net for the year ended December 31, 2017 primarily consisted of legal fees.


Interest expense of $0.13 million recognized for the year ended December 31, 2016 is comprised of $0.05 million related to the debtor-in-possession financing entered into on April 1, 2016, $0.06 million related to the promissory notes issued to certain vendors in accordance with the Plan and $0.02 million related to interest and loan issuance costs related to the Term Loans (as defined below).  Interest expense recognized of $3.0 million for the year ended December 31, 2017 is comprised of $2.9 million related to interest and loan issuance costs related to the Term Loans and $0.1 million related to the promissory notes issued to certain vendors in accordance with the Plan.
Other income, net for the year ended December 31, 2017 primarily consisted of settlements for a reduction in amounts owed to certain vendors. Other income, net for the year ended December 31, 2016 primarily consisted of foreign currency gains related to the payment of bankruptcy liabilities.
litigation costs.

Income Taxes

As of December 31, 2017,2021, we had net operating loss carryforwards of approximately $166$166.2 million to offset future federal income taxes which expire in the years 20212022 through 2037, and approximately $156$522.5 million that may offset future state income taxes which expire in the years 2028 through 2041. We also have federal net operating loss carryforwards generated in the years 2018 through 2037.2021 of $346.9 million that have no expiration date as a result of the tax law changes signed into law on December 22, 2017. Current federal and state tax laws include substantial restrictions on the utilization of net operating losses and tax credits in the event of an ownership change. Even if the carryforwards are available, they may be subject to annual limitations, lack of future taxable income, or future ownership changes that could result in the expiration of the carryforwards before they are utilized. At December 31, 2017,2021, we recorded a 100% valuation allowance against our deferred tax assets of approximately $52$150.6 million, as at that time our management believed it was uncertain that they would be fully realized. If we determine in the future that we will be able to realize all or a portion of our deferred tax assets, an adjustment to our valuation allowance would increase net income in the period in which we make such a determination.

Liquidity and Capital Resources

Since our inception, we have financed our operations primarily through proceeds from the public offerings and private placements of our common stock, private placements of our common and preferred stock, debt financings, interest income earned on cash and cash equivalents, and marketable securities, and borrowings against lines of credit, and receipts from agreementsmore recently, with Sanofithe proceeds under the South Korea Agreement. Specifically, under the South Korea Agreement, we received a $6.0 million upfront payment (or $4.5 million, net of withholding taxes and Novartis.other fees and royalties) in the fourth quarter of 2020 and the first milestone payment of $6.0 million (or $4.5 million, net of withholding taxes and other fees and royalties) which was met in the first quarter of 2021 and received in the second quarter of 2021. In the first quarter of 2021, we borrowed $25.0 million under the Term Loan. In the second quarter of 2021, we sold an aggregate of 5,427,017 shares of our common stock in connection with an underwritten public offering, raising net proceeds of approximately $94.2 million after deducting underwriting discounts and offering costs. In the year ended December 31, 2021, we sold an aggregate of 6,408,087 shares of our common stock in connection with our Controlled Equity OfferingSM Sales Agreement (the “Sales Agreement”) with Cantor Fitzgerald & Co. (“Cantor”), raising net proceeds of approximately $65.7 million after deducting underwriting discounts and offering costs. At December 31, 2017,2021, we had cash and cash equivalents of $0.7$70.0 million. AsSubsequent to December 31, 2021 and through the date of March 23this filing, as disclosed in Note 13 to the Consolidated Financial Statements included in this Annual Report on Form 10-K, 2018, we had cashissued and cash equivalentssold 1,301,548 shares of $1.6 million.common stock pursuant to the Sales Agreement and raised net proceeds of approximately $3.7 million, after deducting fees and expenses.

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62

Primary Sources of Contents

and Uses of Cash

The following table sets forth the primary sources and uses of cash and cash equivalents for each of the periods presented below ($000’s):

  Year Ended December 31, 
  2017  2016 
       
Net cash (used in) provided by:      
   Operating activities $(14,249) $(20,961)
   Investing activities  -   103 
   Financing activities  12,080   15,333 
Net decrease in cash and cash equivalents $(2,169) $(5,525)

  Twelve Months Ended December 31, 
(In thousands) 2021  2020 
Net cash (used in) provided by:      
Operating activities $(184,045) $(69,852)
Investing activities  -   (20)
Financing activities  186,324   137,466 
Net increase in cash and cash equivalents $2,279  $67,594 

Net cash used in operating activities was $14.2 $184.0 million and $21.0$69.9 million for the years ended December 31, 20172021 and 2016,2020, respectively. The primary use of cash in 2016 was to fund our operations related to the Plan. Cash used in operating activities of $21.0$184.0 million for the year ended December 31, 20162021, primarily related to our net loss of $27.0$236.6 million, adjusted for non-cash items, such as $1.6$5.4 million related to reorganization items related to the debtor-in-possession financing, $1.4 million related to the issuance of stock to our CEO and two directors, $0.4 million related to the issuance of warrants to Savant in connection with the acquisition of certain rights related to the benznidazole license, $0.2 million related tostock-based compensation, a net gain on lease termination, other non-cash items of $1.2 million and net cash outflows of $1.6 million related to changesincrease in operating assets and liabilities primarily Liabilities subject to compromise, Accounts payableof $46.6 million and Accrued expenses.other non-cash items of $0.6 million. Cash used in operating activities in 20172020 primarily related to our net loss of $21.9$89.5 million, adjusted for non-cash items, such as $3.0 million in noncash interest expense, $2.1 million in stock-based compensation, changes in operating assets and net increasesliabilities of $16.5 million and other non-cash items of $1.0 million.

Net cash used in working capital items, primarily $2.6 millioninvesting activities was $0 and $20 thousand for the years ended December 31, 2021 and 2020, respectively. Cash used in investing activities for the year ended December 31, 2020 consisted of Accrued expenses.

the purchase of website domain names for future use.

Net cash provided by investingfinancing activities was $0.1$186.3 million for the year ended December 31, 2016,2021 and consisted primarily of net proceeds of approximately $94.2 million related to the reduction in restricted cash related to the terminationsale of 5,427,017 shares of our office leasecommon stock in South San Francisco.

connection with an underwritten public offering, $65.7 million received from the issuance of common stock in connection with the Sales Agreement, $24.4 million in net proceeds received from the Term Loan, and $2.0 million received from the exercise of stock options.

Net cash provided by financing activities was $12.1 $137.5 million for the year ended December 31, 2017 related to2020 and consisted primarily of $67.0 million received from the Term Loansissuance of common stock in the 2020 Private Placement (as defined below).  Net cash provided in June 2020, $72.7 million received from the issuance of common stock in the 2020 Underwritten Offering (as defined below) in September 2020, $0.5 million received from the issuance of the 2020 Convertible Notes, $0.6 million received from the exercise of stock options, $0.3 million received from the issuance of the 2020 Bridge Notes and $0.1 million received from the issuance of common stock under the equity line of credit with Lincoln Park Capital Fund, LLC (“Lincoln Park”), offset by financing activities was $15.3$0.5 million for the year endedpayoff of the 2020 Convertible Notes, $2.4 million for the payoff of the 2019 and 2020 Bridge Notes and $0.8 million for the payoff of the Notes payable to vendors.

Recent Financings

Controlled Equity Offering

On December 31, 2016 related to the debtor-in-possession and bankruptcy-related equity financings and proceeds from the Term Loans (as defined below).

In connection with our emergence from bankruptcy, we closed an $11 million financing that provided the funds required to enable our exit from Chapter 11 as well as to fund our current working capital needs. In December 2016,2020, we entered into a Creditthe Sales Agreement with Cantor, under which we could issue and Securitysell shares of our common stock through Cantor, as sales agent. During the period from January 1, 2021 through December 31, 2021, we issued and sold 6,408,087 shares of our common stock under the Sales Agreement, (as amended, the “Term Loan Credit Agreement”) providing for an original $3.0 million credit facility (the “December 2016 Term Loan”),raising net proceeds of certain fees and expenses. On March 21, 2017, we entered into an amendment$65.7 million. See Note 8 to the Term Loan Credit Agreement to obtain an additional $5.5 million (the “March 2017 Term Loan”), net of certain fees and expenses, providing additional working capital. On July 8, 2017, we entered into a second amendment to the Term Loan Credit Agreement to obtain an additional $5.0 million (the “July 2017 Term Loan”), net of certain fees and expenses, providing additional working capital. As of the third quarter of 2017, we had received the entire amount available under the Term Loan Credit Agreement.

On December 21, 2017, we entered into a Securities Purchase and Loan Satisfaction Agreement (the “Purchase Agreement”) and a Forbearance and Loan Modification Agreement (the “Forbearance Agreement” and, together with the Purchase Agreement, the “Restructuring Agreements”), each with the Term Loan Lenders, Consolidated Financial Statements included in connection with a series of transactions providing for, among other things, the satisfaction and extinguishment of our outstanding obligations under the Term Loan Credit Agreement and the infusion of $3.0 million of new capital. The Restructuring Transactions were completed on February 27, 2018.  For additional information regarding the Restructuring Transactions, see “Restructuring Transactions” in Item 1 of this Annual Report on Form 10-K.10-K for additional information related to the Sales Agreement.

2021 Underwritten Public Offering

On March 30, 2021, we entered into an underwriting agreement with Jefferies LLC, Credit Suisse Securities (USA) LLC and Cantor, as representatives of the several underwriters, in connection with the public offering of 5,000,000 shares of our common stock. In addition, we granted the underwriters a 30-day option to purchase an additional 750,000 shares of our common stock. The initial offering closed on April 5, 2021. On May 3, 2021, we closed on the sale of an additional 427,017 shares of our common stock related to the exercise of the underwriters’ 30-day option. The aggregate gross proceeds from the sale of the 5,427,017 shares in the offering, inclusive of the additional shares purchased by the underwriters, were approximately $100.4 million. The net proceeds from this offering, after deducting underwriting discounts and offering costs, were approximately $94.2 million.

Term Loan with Hercules

On March 10, 2021, we entered into the Term Loan with Hercules which provided us with the ability to draw an initial amount of $25.0 million, which we drew on March 29, 2021. We may become entitled to draw another $20.0 million under the Term Loan through June 15, 2022, at the discretion of Hercules if we request additional funding in support of our strategic initiatives, although there can be no assurances that Hercules would agree to provide such additional funding. See Note 5 to the Consolidated Financial Statements included in this Annual Report on Form 10-K for additional information on the Term Loan.

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2020 Underwritten Public Offering

On September 17, 2020, we entered into an underwriting agreement with J.P. Morgan Securities LLC and Jefferies LLC, as representatives of the several underwriters, in connection with the public offering of 8,000,000 million shares of Humanigen’s common stock (the “2020 Underwritten Offering”). In addition, we granted the underwriters a 30-day option to purchase an additional 1,200,000 shares of common stock, which option was exercised in full by the underwriters on September 18, 2020.

As a result of the pricing of the public offering, our common stock commenced trading on the Nasdaq Capital Market.

The aggregate gross proceeds from the sale of the full 9,200,000 shares in the offering were approximately $78.2 million. We used the proceeds from the offering to support our manufacturing, production and commercial preparation activities relating to lenzilumab as a potential therapy for COVID-19 patients and for working capital and other general corporate purposes.

2020 Private Placement

On June 1, 2020, we entered into a securities purchase agreement with certain accredited investors to complete a private placement of our common stock (the “Private Placement”). The closing of the Private Placement occurred on June 2, 2020 (the “Closing Date”). At the closing, we issued and sold 16,505,743 shares of our common stock (the “Shares”) at a purchase price of $4.35 per share, for aggregate gross proceeds of approximately $71.8 million. We used a portion of the proceeds to retire the following indebtedness:

the outstanding principal amount and accrued and unpaid interest on Humanigen’s convertible promissory notes issued in March 2020, which approximated $0.5 million, were repaid in full, and the notes were extinguished;
the outstanding principal and accrued and unpaid interest, amounting to approximately $2.4 million, on short-term, secured bridge loans made to Humanigen in 2019 and 2020 were repaid in full and the related liens were released; and
the remaining outstanding principal and accrued and unpaid interest, amounting to approximately $0.8 million, on certain notes payable to vendors in accordance with the bankruptcy plan.

We used the remaining proceeds from the Private Placement to fund our Phase 3 study of lenzilumab in COVID-19, to secure manufacturing capacity, to progress Chemistry, Manufacturing and Controls (“CMC”) work, to prepare for commercialization in the event of approval of lenzilumab for use in COVID-19 patients, our collaboration agreement with Kite Pharmaceuticals, Inc., and other development programs, as well as for working capital and other general corporate purposes. See Note 11 to the Consolidated Financial Statements included in this Annual Report on Form 10-K for material information regarding two complaints filed against us in connection with the Private Placement.

Liquidity and Going Concern

We continue to advance our efforts in support of the development of lenzilumab as a therapy for hospitalized COVID-19 patients. As of December 31, 2021, we had cash and cash equivalents of $70.0 million. On September 8, 2021, FDA declined to approve our EUA for lenzilumab. As more fully described in this Annual Report on Form 10-K under “Item 1. Business—Manufacturing and Raw Materials”, we have entered into agreements with several CMOs to provide manufacturing, fill/finish and packaging services for lenzilumab. While we remain committed to our ongoing efforts seeking authorization or approval for commercial use of lenzilumab to treat hospitalized COVID-19 patients in the US, EU, UK and other territories, we have amended, and in some cases canceled, certain of these agreements, some of which were contingent on EUA, in an effort to reduce our future spending on lenzilumab production until and if authorization is received in the UK, EU, or U.S. (See Note 7 to the Consolidated Financial Statements included in this Annual Report on Form 10-K). These changes may limit future production of lenzilumab but because most of our manufacturing agreements required payment of upfront fees upon execution and payments against performance of the services to be provided, often over a lengthy performance period, the changes are expected to decrease our manufacturing costs beginning in 2022.

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63

Considering our current cash resources and our current and expected levels of Contents


Despite completing the Restructuring Transactions, operating expenses, which includes our combined accounts payable and accrued expenses as of December 31, 2021 of $64.6 million, and our capital commitments of $63.4 million during 2022 related to our manufacturing agreements, as further described below (see “–Capital Commitments and Capital Resources”),we will require substantialexpect to need additional capital to fund our planned operations and capital requirements for the next twelve months. We may seek to raise such additional capital through public or private equity offerings, including under the Sales Agreement with Cantor, grant financing and support from governmental agencies, convertible debt, additional borrowings under our Term Loan with Hercules at the discretion of Hercules, borrowings under other debt financings, collaborations, strategic alliances and marketing, supply, distribution, or licensing arrangements. Subsequent to December 31, 2021 and through the date of this filing, as disclosed in Note 13 to the Consolidated Financial Statements included in this Annual Report on Form 10-K, we issued and sold 1,301,548 shares of common stock pursuant to the Sales Agreement and raised net proceeds of approximately $3.7 million, after deducting fees and expenses. While we believe these plans to raise additional funds will alleviate the conditions that raise substantial doubt about our ability to continue as a going concern, these plans are not entirely within our control and to support our business efforts, including obtaining regulatory approvals for our product candidates, lenzilumab and ifabotuzumab, clinical trials and other studies, and, if approved, the commercializationcannot be assessed as being probable of our product candidates. The amount of capital we will require and the timing of our need for additional capital will depend on many factors, including:

·the type, number, timing, progress, costs, and results of the product candidate development programs that we are pursuing or may choose to pursue in the future;
·the scope, progress, expansion, costs, and results of our pre-clinical and clinical trials;
·the timing of and costs involved in obtaining regulatory approvals;
·the success, progress, timing and costs of our efforts to evaluate or consummate various strategic alternatives if in the best interests of our stockholders;
·our ability to re-list our common stock on a national securities exchange, whether through a new listing or by completing a strategic transaction;
·our ability to establish and maintain development partnering arrangements and any associated funding;
·the emergence of competing products or technologies and other adverse market developments;
·the costs of maintaining, expanding, and protecting our intellectual property portfolio, including potential litigation costs and liabilities;
·the resources we devote to marketing, and, if approved, commercializing our product candidates;
·the scope, progress, expansion and costs of manufacturing our product candidates; and
·the costs associated with being a public company.
We are pursuing efforts to raise additional capital from a number of sources, including, but not limited to, the sale of equity or debt securities, strategic collaborations, and licensing of our product candidates.occurring. Additional fundingfunds may not be available when we need them on terms that are acceptable to us, on a timely basis or at acceptable terms, if at all. Our ability to access capital when needed is not assured and, if not achieved on a timely basis, would materially harm our business, financial condition and results of operations. If adequate funds are not available, we may be required to delay or reduce the scope of or eliminate one or more of our research or development programs. Weprograms, our commercialization efforts or our manufacturing commitments and capacity. In addition, if we raise additional funds through collaborations, strategic alliances or marketing, supply, distribution, or licensing arrangements with third parties, we may also be requiredhave to sell or licenserelinquish valuable rights to others our technologies, future revenue streams or product candidates or development programsto grant licenses on terms that may not be favorable to us.

We expect that the results of the ACTIV-5/BET-B trial will be important to potential investors in evaluating an investment in our company. Accordingly, our ability to raise capital on favorable terms in the future is linked closely to the success of that trial, which we cannot assure. Unfavorable results likely would have preferreda material and adverse impact on our stock price and ability to develop and commercialize ourselves and on less than favorable terms, if at all. obtain future financing.

If in the best interests of our stockholders, we may also find it appropriate to enter into a strategic transaction that could result in, among other things, a sale, merger, consolidation or business combination.


If management isare unsuccessful in our efforts to raise additional capital, based on our current and expected levels of operating expenses our current capital will not be sufficient to fund our operations for the next twelve months. These conditions raise substantial doubt about our ability to continue as a going concern.
Our common stock currently trades on

Capital Commitments and Capital Resources

On September 8, 2021, FDA declined to approve our application for EUA for the OTCQB Venture Marketuse of lenzilumab for the treatment of COVID-19.

To support our development efforts for lenzilumab and potential commercialization upon approval under the ticker symbol “HGEN”. Although our common stock is listed for quotation on the OTCQB Venture Market, trading is limited and an active market for our common stock may never develop in the future, which could harm our ability to raise capital to continue to fund operations.


 Contractual Obligations and Commitments
The following table summarizes our contractual obligations at December 31, 2017 and the effect such obligations are expected toEUA, CMA or MAA, we have on our liquidity and cash flow in future years. ($000’s)
  Total  
Less than
1 year
  
1 to 3
years
  
4 to 5
years
  
After 5
years
 
Lease obligations $202  $202  $-  $-  $- 
Principal Payments on term loans  16,308   16,308   -   -   - 
Interest payments on term loans  1,032   1,032   -   -   - 
Commitment fees on term loans  678   678   -   -   - 
Principal payments on notes payable to vendors  1,174   -   1,174   -   - 
Interest payments on notes payable to vendors  177   -   177   -   - 
Total $19,571  $18,220  $1,351  $-  $- 
Operating Leases
Per the terms of our former lease agreement, we had the option to terminate the lease after 36 months, subject to additional fees and expenses. In March 2016, we entered into a termination agreement, or the Lease Termination Agreement, related to the lease of this facility. The Lease Termination Agreement, approved by order of the Bankruptcy Court issued March 15, 2016, waived all damages related to early termination of the lease, relieved us of March rental expenses and set an effective termination date of March 31, 2016.
Concurrentagreements with the termination of this lease, we entered into a lease agreementseveral organizations for a new facilitycontract manufacturing services, as more fully described in Brisbane, California. The new lease commenced in April 2016 and was to expire on March 31, 2017. On February 16, 2017, we amended the lease to extend the term of the lease for an additional period of eighteen months such that the lease will expire on September 30, 2018. The minimum lease payments presented in the table above include payments due under the amended lease that expires on September 30, 2018.
2016 Financing Transactions
2016 Credit Agreement
On April 1, 2016,  we entered into the Credit Agreement with Black Horse Capital Master Fund Ltd., as administrative agent and lender (“BHCMF” or “Agent”), Black Horse Capital LP, as a lender (“BHC”), Cheval Holdings, Ltd., as a lender (“Cheval”) and Nomis Bay LTD, as a lender (“Nomis” and, together with BHCMF, BHC and Cheval, the “Lenders”). The Credit Agreement provided for a debtor-in-possession credit facility in the original principal amount of $3.0 million (the “Term Loan”). The Credit Agreement provided that the Term Loan will be made by the Lenders at an original discount equal to $0.2 million (the “Upfront Fee”) and required the payment by us to the Lenders of a commitment fee equal to $0.2 million (the “Commitment Fee”). In accordance with the terms of the Credit Agreement, we used the proceeds of the Term Loan for working capital, bankruptcy-related costs, costs related to our plan of reorganization, the payment of certain fees and expenses owed to BHCMF and the Lenders in connection with the Credit Agreement and other costs incurred in the ordinary course of business.

The Credit Agreement provided that the outstanding principal balance of the Term Loan, plus accrued and unpaid interest, plus the Upfront Fee, plus the Commitment Fee and all other non-contingent obligations would mature on the earlier of an event of default under the Credit Agreement or the effective date of our plan of reorganization.  The Maturity Date was deemed to occur simultaneously with the Effective Date and, accordingly, on June 30, 2016, 2,350,480 shares of common stock were issued to the Lenders in repayment of our debt obligations under the Credit Agreement, including 201,436 shares to BHC, 470,096 shares to BHCMF, 503,708 shares to Cheval, 940,192 shares to Nomis and 235,048 shares to Cortleigh Limited (“Cortleigh”).  Pursuant to the terms of the Credit Agreement, we also paid $0.4 million to BHC in payment of its fees and expenses and $0.3 million to Nomis in payment of its fees and expenses.

2016 Securities Agreement
 Also on April 1, 2016, we entered into the Securities Purchase Agreement, or the SPA, with the Lenders. The SPA provides for the sale to the Lenders on the closing date of an aggregate of 5,885,000 shares of common stock, subject to adjustment as provided in the SPA, in respect of exit financing in the amount of $11 million (the “Exit Financing”) plus an exit financing commitment fee of $0.8 million payable by us to the Lenders, plus payment to the Lenders of their fees and expenses incurred in connection with the Exit Financing and the SPA. Nomis subsequently assigned twenty percent (20%) of its interest in the shares of common stock to be purchased by Nomis under the SPA and the Credit Agreement to Cortleigh (collectively with the Lenders, the “Purchasers”).

The issuance of the shares contemplated by the SPA was consummated on the Effective Date, and we issued to the Purchasers an aggregate of 7,147,035 shares of common stock for an aggregate purchase price of $11 million, including 612,501 shares to BHC, 1,429,407 shares to BHCMF, 1,531,610 shares to Cheval, 2,858,814 shares to Nomis and 714,703 shares to Cortleigh.  Pursuant to the terms of the SPA, we paid $0.4 million to BHC in payment of its fees and expenses and $0.3 million to Nomis in payment of its fees and expenses.

Notes Payable to Vendors

On June 30, 2016, we issued promissory notes in an aggregate principal amount of approximately $1.2 million to certain claimants in accordance with the Plan.  The notes are unsecured, bear interest at 10% per annum and are due and payable in full, including principal and accrued interest on June 30, 2019.  As of December 31, 2017, we have accrued $0.2 million in interest related to these promissory notes.


Term Loans

On December 21, 2016, we entered into a Credit and Security Agreement,, as amended on March 21, 2017 and on July 8, 2017 (as amended, the “Term Loan Credit Agreement”), with BHCMF, as administrative agent and lender, and lenders BHC, Cheval and Nomis Bay (collectively the “Term Loan Lenders”).  The Term Loan Credit Agreement provided for the following term loans (the “Term Loans”) in 2017 and 2016 ($000’s):

Term Loan 
Proceeds
to
Company
  Fees  
Original
Principal
Amount
  
Commitement
Fee Due at
Maturity
  
Total Due
at
Maturity
 
December 2016 Loan $2,993  $322  $3,315  $153  $3,468 
March 2017 Loan  5,500   478   5,978   275   6,253 
July 2017 Loan  5,000   435   5,435   250   5,685 

In accordance with the terms of the Term Loan Credit Agreement, we used the proceeds of the Term Loans for general working capital, the payment of certain fees and expenses owed to BHCMF and the Term Loan Lenders and other costs incurred in the ordinary course of business. Dr. Chappell, one our former directors, is an affiliate of each of BHCMF, BHC and Cheval. On November 9, 2017, Dr. Chappell resigned from the Board, effective immediately.

The Term Loans bore interest at 9.00% and were subject to certain customary representations, warranties and covenants, as set forth in the Term Loan Credit Agreement.

Upon the occurrence of any event of default set forth in the Term Loan Credit Agreement, BHCMF had the option of terminating the Term Loan Credit Agreement and declaring all of the Company’s obligations immediately payable. The occurrence of an event of default caused the Term Loans to bear interest at a rate per annum equal to 14.00%.

Our obligations under the Term Loan Credit Agreement were secured by a first priority interest in all of our real and personal property, subject only to certain carve outs and permitted liens, as set forth in the Term Loan Credit Agreement.

The outstanding principal balance of the Term Loans, plus accrued interest and fees, were due on the earlier of acceleration after an event of default under the Term Loan Credit Agreement, or October 31, 2017.  On October 31, 2017, we obtained a short-term extension of the maturity of our obligations under the Term Loans. On November 16, 2017, we obtained an additional short-term extension of the maturity of our obligations under the Term Loans.

On December 1, 2017, our obligations matured under the Term Loan Credit Agreement. On December 21, 2017, we agreed to enter into a series of transactions (as further described below, the “Restructuring Transactions”) providing for, among other things, the satisfaction and extinguishment of our outstanding obligations under the Term Loan Credit Agreement between us and the Term Loan Lenders, and the infusion into the company of $3.0 million of new capital.

The following chart shows the components of our Term Loans (including the Bridge Loan and the Claims Advances, as discussed below) as of December 31, 2017 and 2016 ($000’s):

As of December 31, 2017               
  
Original
Principal
Amount
  
Accrued
Interest
  
Loan
Balance
  Fees  
Balance
Due
 
December 2016 Loan $3,315  $324  $3,639  $153  $3,792 
March 2017 Loan  5,978   452   6,430   275   6,705 
July 2017 Loan  5,435   249   5,684   250   5,934 
Bridge Loan  1,500   6   1,506   -   1,506 
Claims Advances Loan  80   1   81   -   81 
Totals $16,308  $1,032  $17,340  $678  $18,018 
                     
As of December 31, 2016                    
  
Original
Principal
Amount
  
Accrued
Interest
  
Loan
Balance
  
Unamortized
Fees
  
Balance
Due
 
December 2016 Loan $3,315  $8  $3,323  $(307) $3,016 
The Restructuring Transactions were completed on February 27, 2018.  For additional information regarding the Restructuring Transactions, see “Restructuring Transactions” in Item 1 of this Annual Report on Form 10-K.

On March 12, 2018,10-K under “Item 1. Business—Manufacturing and Raw Materials.”

While we issued 2,445,557 sharesremain committed to completing regulatory processes underway seeking marketing authorization for lenzilumab to treat hospitalized COVID-19 patients in the U.S., EU, UK and other territories, subsequent to FDA’s decision to decline to approve our application for EUA for the use of lenzilumab we amended, and in some cases terminated, certain of our common stockmanufacturing agreements, some of which were contingent on EUA, in an effort to reduce our future spending on lenzilumab production until and if authorization is received in the UK, EU, or U.S. These changes will significantly limit future production of lenzilumab but because most of our manufacturing agreements required payment of upfront fees upon execution and payments against performance of the services to be provided, often over a lengthy performance period, the changes are expected to decrease our manufacturing costs beginning in 2022. We intend to seek additional manufacturing capacity if authorization is obtained. As of December 31, 2021, we estimate that our commitments remaining to be incurred under these agreements will amount to approximately $63.4 million during 2022, $4.6 million during 2023, and $7.4 million thereafter. Certain of these commitments and amounts accrued at year-end are in dispute and we intend to defer these payments, negotiate lower amounts or seek legal recourse for totalthe amounts in question. If marketing authorization or approval for lenzilumab were granted, we would expect to be able to satisfy certain of the cash requirements associated with our future manufacturing commitments from revenues from the commercial sale of lenzilumab, supplemented as necessary with proceeds from the sale of $1.1our equity securities; the incurrence of debt; upfront and milestone payments from licensees; and government funding or financial support, if offered.

See “Contracts” below for additional information.

Other significant contractual cash requirements as of December 31, 2021 include payments for principal and interest on the Term Loan. Our current and long-term obligations related to the Term Loan are outlined in Note 5 to the Consolidated Financial Statements included in this Annual Report on Form 10-K.

Other Financings

See Note 5 to the Consolidated Financial Statements included in this Annual Report on Form 10-K for information regarding our other financings.

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Contracts

Eversana Agreement

On January 10, 2021, we announced that we had entered into a master services agreement (the “Eversana Agreement”) with Eversana Life Science Services, LLC (“Eversana”) pursuant to which Eversana will provide us with services in connection with the potential launch of lenzilumab.

On September 21, 2021, we notified Eversana that due to the EUA status in the U.S., we were terminating the initial statement of work related to commercialization support of lenzilumab for the treatment of COVID-19 in the United States. Eversana is disputing the termination notice and has requested payment of approximately $4.0 million it has asserted we owe for services rendered from April 1, 2021 to accredited investors.


Contracts
lenzilumab in anticipation of an EUA or CMA in 2021. We have also entered into agreements for packaging of the drug. These agreements represent large commitments, including upfront amounts prior to commencement of manufacturing and progress payments through the course of the manufacturing process and include payments for technology transfer. Certain of these CMOs have been unsuccessful in their efforts to manufacture some batches of lenzilumab to our specifications for various reasons. We are working with one of these CMOs to determine if batches of BDS manufactured by them will be usable in the future or, if not, whether other financial recompense will be offered to us.

Please see “Part I, Item 1A - Risk Factors—Risks Related to Our Efforts to Develop Lenzilumab for COVID-19— Manufacturing efforts relating to our lenzilumab program in COVID-19 have been extremely costly and inefficient in producing treatments for use in our clinical development program or potential sale.”

License Agreements

We are obligated to make future payments to third parties under in‑licensein-license agreements, including sublicense fees, royalties, and payments that become due and payable on the achievement of certain development and commercialization milestones.


We record upfront and milestone payments made to third parties under licensing arrangements as an expense. Upfront payments are recorded when incurred and milestone payments are recorded when the specific milestone has been achieved.

License with the Mayo Foundation for Medical Education and Research

On June 19, 2019, we entered into the Mayo Agreement with the Mayo Foundation. Under the Mayo Agreement, we have in-licensed certain technologies that we believe may be used to create CAR-T cells lacking GM-CSF expression through various gene-editing tools including CRISPR-Cas9. Pursuant to the Mayo Agreement, we were required to pay $0.2 million to the Mayo Foundation within six months of the effective date of the Mayo Agreement, or upon completion of a qualified financing, whichever is earlier. We paid the initial payment following completion of the Private Placement. The Mayo Agreement also requires the payment of milestones and royalties upon the achievement of certain regulatory and commercialization milestones.

License with the University of Zurich

On July 19, 2019, we entered into the Zurich Agreement with University of Zurich (“UZH”). Under the Zurich Agreement, we have in-licensed certain technologies that we believe may be used to prevent GvHD through GM-CSF neutralization. The Zurich Agreement required an initial one-time payment of $0.1 million, which we paid to UZH on July 29, 2019. The Zurich Agreement also requires the payment of annual license maintenance fees, as well as milestones and royalties upon the achievement of certain regulatory and commercialization milestones.

Outlicensing Agreements

The South Korea Agreement

On November 3, 2020, we entered into a License Agreement (the “South Korea Agreement”) with KPM and Telcon (together, the “Licensee”). Pursuant to the South Korea Agreement, among other things, we granted the Licensee a license under certain patents and other intellectual property to develop and commercialize our lead product candidate, lenzilumab (the “Product”), for treatment of COVID-19 pneumonia, in South Korea and the Philippines (the “Territory”), subject to certain reservations and limitations. The Licensee will be responsible for gaining regulatory approval for, and subsequent commercialization of, lenzilumab in those territories.

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As consideration for the license, the Licensee has agreed to pay us (i) an up-front license fee of $6.0 million(or $4.5 million net of withholding taxes and other fees and royalties), payable promptly following the execution of the License Agreement, which was received in the fourth quarter of 2020, (ii) up to an aggregate of $14.0 million in two payments based on our achievement of two specified milestones in the U.S., of which the first milestone was met in the first quarter of 2021 and $6.0 million (or $4.5 million net of withholding taxes and other fees and royalties) was received in the second quarter of 2021,and (iii) subsequent to the receipt by the Licensee of the requisite regulatory approvals, double-digit royalties on the net sales of lenzilumab in South Korea and the Philippines. The Licensee has agreed to certain development and commercial performance obligations. It is expected that we will supply lenzilumab to the Licensee for a minimum of 7.5 years at a cost-plus basis from an existing or future manufacturer. The Licensee has agreed to certain minimum purchases of lenzilumab on an annual basis.

Indemnification

In the normal course of business, we enter into contracts and agreements that contain a variety of representations and warranties and provide for general indemnifications. Our exposure under these agreements is unknown because it involves claims that may be made against us in the future but have not yet been made. To date, we have not paid any claims or been required to defend any action related to our indemnification obligations. However, we may record charges in the future as a result of these indemnification obligations.

Off‑Balance Sheet Arrangements
We currently have no off‑balance sheet arrangements, such as structured finance, special purpose entities, or variable interest entities.

ITEM 7A.  QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Information requested by

We are a smaller reporting company, as defined in Rule 12b-2 under the Securities Exchange Act of 1934, as amended, for this Item isreporting period and are not applicable as we are electing scaled disclosure requirements availablerequired to Smaller Reporting Companies with respect toprovide the information required under this Item.

item.

ITEM 8.  FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

Our Consolidated Financial Statements and The Report of Independent Registered Public Accounting Firm are included in this Annual Report on Form 10-K on pages F-1 through F-34.

F-29.

ITEM 9.  CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE

None.

ITEM 9A.  CONTROLS AND PROCEDURES

Evaluation of Disclosure Controls and Procedures

Our management, Chief Executive Officer and our Chief Financial Officer evaluated the effectiveness of our disclosure controls and procedures as of December 31, 2017.2021. The term “disclosure controls and procedures,” as defined in Rules 13a‑15(e)13a-15(e) and 15d‑15(e)15d-15(e) under the Exchange Act, means controls and other procedures of a company that are designed to ensure that information required to be disclosed by us in the reports that we file or submit under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms.

Disclosure controls and procedures include, without limitation, controls and procedures designed to ensure that information required to be disclosed by us in the reports that we file or submit under the Exchange Act is accumulated and communicated to our management, including our Chief Executive Officer and our Chief Financial Officer, to allow timely decisions regarding required disclosure. Based on this evaluation, and in light of the weaknesses in our internal control over financial reporting described below, our Chief Executive Officer and our Chief Financial Officer concluded that our disclosure controls and procedures were not effective as of December 31, 2017.

2021.

Management’s Annual Report on Internal Control Over Financial Reporting

Our management is responsible for establishing and maintaining adequate internal control over financial reporting (as defined in Rule 13a‑15(f)13a-15(f) and 15d‑15(f)15d-15(f) under the Exchange Act). Our Chief Executive Officer and our Chief Financial Officer assessed the effectiveness of our internal control over financial reporting as of December 31, 2017.2021. In making this assessment, our Chief Executive Officer and our Chief Financial Officer used the criteria set forth by the Committee of Sponsoring Organizations of the Treadway Commission, or COSO, in Internal Control—Integrated Framework. Based on that assessment and using the COSO criteria, our Chief Executive Officer and Interimour Chief Financial Officer have concluded that, as of December 31, 2017,2021, our internal control over financial reporting was not effective because ofeffective.

The Company’s independent registered public accounting firm, HORNE LLP, has issued an audit report on the material weaknesses described below.

A material weakness is defined as “a deficiency, or a combination of deficiencies inCompany’s internal control over financial reporting, such that there is a reasonable possibility that a material misstatementwhich appears on page F-4 of the company’s annual or interim financial statements will not be prevented or detected on a timely basis.”this Form 10-K.

63
The ineffectiveness of our internal control over financial reporting at December 31, 2017, was due to an insufficient degree of segregation of duties amongst our accounting and financial reporting personnel.
During 2018, we intend to work to remediate the material weaknesses identified above, which could include the addition of accounting and financial reporting personnel and/or the engagement of accounting and personnel consultants on a limited-time basis until we add a sufficient number of personnel. However, our current financial position could make it difficult for us to add the necessary resources.
This Annual Report on Form 10-K does not include an attestation report of our registered public accounting firm due to a transition period established by the Jumpstart Our Business Startups Act, or JOBS Act, for emerging growth companies.

Changes in Internal Control Over Financial Reporting

Other than as described above, there has been

There was no change in our internal control over financial reporting that occurred during the quarter ended December 31, 2017,2021 that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

Inherent Limitations of Controls

Management does not expect that our disclosure controls and procedures or our internal control over financial reporting will prevent or detect all errorerrors and all fraud. Controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving their objectives and management necessarily applies its judgment in evaluating the cost‑benefitcost-benefit relationship of possible controls and procedures. Because of the inherent limitations in all control systems, no evaluation of controls can provide absolute assurance that all control issues and instances of fraud, if any, within the Company have been detected. These inherent limitations include the realities that judgments in decision‑makingdecision-making can be faulty, and that breakdowns can occur because of a simple error or mistake. Additionally, controls can be circumvented by the individual acts of some persons, by collusion of two or more people, or by management override of the controls. The design of any system of controls also is based in part upon certain assumptions about the likelihood of future events, and there can be no assurance that any design will succeed in achieving its stated goals under all potential future conditions. Over time, controls may become inadequate because of changes in conditions, or deterioration in the degree of compliance with the policies or procedures. Because of the inherent limitations in a cost‑effectivecost-effective control system, misstatements due to error or fraud may occur and not be detected.

ITEM 9B.  OTHER INFORMATION

None. 

ITEM 9C.  DISCLOSURE REGARDING FOREIGN JURISDICTIONS THAT PREVENT INSPECTIONS

Not applicable.

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None.

PART III

ITEM 10.  DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE

Directors

The following table sets forthinformation contained in our definitive proxy statement for our 2022 annual meeting of stockholders under the names, agescaptions “ELECTION OF DIRECTORS”, “INFORMATION ABOUT OUR EXECUTIVE OFFICERS” and current positions of members of the Board of Directors, or the Board, of Humanigen, Inc., or the Company or us.  Following the table“INFORMATION REGARDING THE BOARD AND CORPORATE GOVERNANCE” is biographicalhereby incorporated by reference. Certain other information for each director, including information on specific experiences, qualifications and skills that support the conclusion that the director should currently serve on the Board.

Name Age Principal Occupation 
Director
Since
Cameron Durrant, M.D., MBA 57 Chairman and Chief Executive Officer, Humanigen, Inc. 2016
Ronald Barliant, JD 72 Of Counsel, Goldberg Kohn, Ltd. 2016
Timothy Morris, CPA 56 Chief Financial Officer, Iovance Biotherapeutics, Inc. 2016
Rainer Boehm, M.D., MBA 57 Former Chief Commercial and Medical Officer and interm Chief Executive Officer at Novartis Pharmaceuticals 2018
Robert Savage, MBA 64 President, Chief Executive Officer and Chairman Strategic Imagery, LLC 2018
Cameron Durrant, M.D., MBA, has served as a member and Chairman of our Board since January 2016, and as our Chief Executive Officer since March 2016. From May 2014 to January 2016, Dr. Durrant served as Founder and Director of Taran Pharma Limited, a private semi-virtual specialty pharma company developing and registering treatments in Europe for orphan conditions. Dr. Durrant served as President and Chief Executive Officer of ECR Pharmaceuticals Co., Inc., a subsidiary of Hi-Tech Pharmacal Co., Inc., from September 2012 to April 2014. From January 2010 to September 2012, Dr. Durrant served as a consultant to several biopharma companies, as the Founder, CEO, CFO and director of PediatRx, Inc. and on the boards of several privately-held healthcare companies. He previously served as CEO of PediaMed Pharmaceuticals and has been a senior executive at Johnson and Johnson, Pharmacia Corporation, GSK and Merck.  Dr. Durrant has been a director of Immune Pharmaceuticals Inc. since July 2014 and serves on the boards of directors of several privately held healthcare companies.  Dr. Durrant earned his medical degree from the Welsh National School of Medicine, Cardiff, UK, his DRCOG from the Royal College of Obstetricians and Gynecologists, London, UK, his MRCGP from the Royal College of General Practitioners, London, UK, his DipCH from the Melbourne Academy, Australia and his MBA from Henley Management College, Oxford, UK. Dr. Durrant brings to the Board extensive experience as a pharma/biotech entrepreneur, operating executive and board member, as well as his day to day operating experience as our Chief Executive Officer.
Ronald Barliant, JD, has served as a member of our Board since January 2016. Mr. Barliant has been Of Counsel to Goldberg Kohn, Ltd. since January 2016, and immediately prior to that had served as a principal in Goldberg Kohn’s Bankruptcy & Creditors’ Rights Group since September 2002. He previously served as U.S. bankruptcy judge for the Northern District of Illinois from 1988 to 2002.  Mr. Barliant has represented debtors and creditors in complex bankruptcy cases, and counseled major financial institutions, business firms and boards of directors in connection with workouts.  He is a member of the board of directors of a closely held information technology company and the board of the estate representative supervising the liquidation of assets in the Global Crossing case.  Mr. Barliant brings to the Board valuable experience gained from a distinguished career as a counselor to numerous boards, considered judgment and experience with bankruptcy in the bankruptcy setting, which continues to be relevant as we address the finalization of matters relatedrelating to our emergence from bankruptcy.
Timothy Morris, CPA has served as a member of our Board since June 2016.  Mr. Morris has served as the Chief Financial Officer of Iovance Biotherapeutics, Inc., a biopharmaceutical company, since August 2017.  From March 2014 to June 2017 Mr. Morris served as Chief Financial Officer and Head of Business Development of AcelRx Pharmaceuticals, Inc., a specialty pharmaceutical company. From November 2004 to December 2013, Mr. Morris served as Senior Vice President Finance and Global Corporate Development, Chief Financial Officer of VIVUS, Inc. a biopharmaceutical company.  Mr. Morris received his BS in Business with an emphasis in Accounting from California State University, Chico, and is a Certified Public Accountant (Inactive).  Mr. Morris brings to the Board valuable operational experience with public companies in the biopharmaceutical industry, particularly in the areas of finance and corporate development.
Rainer Boehm, M.D., MBA has served as a member of our Board since February 2018.Mr. Boehm has been a biopharmaceutical industry leader for more than three decades. At Novartis for 29 years, he held roles of increasing responsibility culminating with his position as Chief Commercial and Medical Affairs Officer and as ad interim CEO of Novartis’ pharmaceuticals division. His background spans senior leadership, marketing, sales and medical affairs positions in both oncology and pharmaceuticals and he has led regions around the world, including North America, Asia and all emerging markets. Mr. Boehm has overseen the launch and commercialization of many new drugs in his career, including blockbuster breakthroughs Cosentyx and Entresto, and major oncology brands including Afinitor, Exjade, Tasigna, Femara, Zometa and Glivec. Mr. Boehm also currently servesthis Annual Report on the board of directors for Cellectis, a clinical-stage biopharmaceutical company focused on immunotherapies based on gene-edited CAR-T cells; as an advisor in leadership development for senior executives at the GLG Institute in New York City; and as a consultant to healthcare companies. He graduated from the medical school at the University of Ulm in Germany and received his MBA from Schiller University at the Strasbourg campus in France.Mr. Boehm was introduced to the Board by Dr. Durrant as a potential candidate and was elected after a review of the above qualifications. Mr. Boehm brings to the Board significant knowledge and experience within the biopharmaceutical industry, as well as financial acumen and operational experience.
Robert Savage, MBA, has served as a member of our Board since March 2018. Mr. Savage is a seasoned executive with more than 40 years of experience in marketing, sales, drug development, operations and business development in the pharmaceutical and biotechnological industries. Moreover, Mr. Savage has served on 12 boards over two decades helping to guide companies and organizations, both public and private.  Recently, he has been a director at Depomed, from October 2016 to August 2017; The Medicines Company, from 2003 – 2016; Medworth Acquisition Corporation, from 2013 – 2015; Savient Pharmaceuticals, Inc., from 2012 – 2013; and Epicept Corporation, from 2004 – 2013.  He has led multinational groups to successfully execute on corporate strategies to develop, launch and market multiple pharmaceutical brands with sales exceeding $4 billion. Currently, Mr. Savage is the president, chief executive officer and chairman of Strategic Imagery, LLC. He served as group vice president and president, worldwide general therapeutics & inflammation business, at Pharmacia Corporation from 2002 until its acquisition by Pfizer. Prior to his work with Pharmacia, Mr. Savage held leadership positions at Johnson & Johnson, where he was the worldwide chairman of the pharmaceuticals group, with prior senior roles at Ortho-McNeil Pharmaceuticals and Hoffman La-Roche. Mr. Savage earned his MBA in international marketing from Rutgers University in New Jersey. He received his BS in biology from Upsala College.
Additional Information. Upon the emergence from our bankruptcy on June 30, 2016, Dr. Durrant and Messrs. Barliant and Morris were designated (in the case of Dr. Durrant and Mr. Barliant) or appointed (in the case of Mr. Morris) to serve on our Board pursuant to the terms of the Stock Purchase Agreement discussed in Item 13 below.  Accordingly, Dr. Durrant continued to serve on the Board as a joint designee of the Black Horse Entities and Nomis Bay, and Mr. Barliant was designated by the Black Horse Entities.  Mr. Morris was appointed by Nomis Bay.
Executive Officers
The following table sets forth the names, ages and current positions of each of our current executive officers. Following the table is biographical information for each executive officer not currently serving as a director.
NameAgePosition
Cameron Durrant, M.D., MBA                      57Chief Executive Officer
Greg Jester                      50Chief Financial Officer
Cameron Durrant, M.D, MBA has served as our Chief Executive Officer since March 2016.  See “Directors” for Dr. Durrant’s biographical information.
Greg Jester has served as of Chief Financial Officer since September 2017. Prior to his appointment as Chief Financial Officer, Mr. Jester served as Vice President, Finance, for Tris Pharma, Inc., a specialty pharmaceutical company, from May 2015 to August 2017. From August 2014 to May 2015, Mr. Jester served as interim controller for Virtus Pharmaceuticals, LLC, a $40 million generic pharmaceutical company. He also served as a financial consultant to Cormedix, Inc., a publicly traded commercial drug device company, from March 2014 to August 2014. From July 2013 to December 2013, Mr. Jester served as Chief Financial Officer and Partner for Madden Global Solutions, Inc., a food brokerage serving warehouse club and chain drug stores, and served as Chief Financial Officer of House Party, Inc., a social media marketing company, from January 2011 to June 2013. Mr. Jester has held CFO roles at numerous private and publicly-owned pharmaceutical companies, including Alvogen Group Inc. and Innovive Pharmaceuticals, Inc. Mr. Jester holds a Bachelor of Science in business administration from the University of Richmond.
Section 16(a) Beneficial Ownership Reporting Compliance
Section 16(a) of the Securities Exchange Act of 1934, as amended, or the Exchange Act, requires our directors, executive officers and 10% stockholders to file reports of ownership of our equity securities. To our knowledge, based solely on review of the copies of such reports furnished to us related to the year ended December 31, 2017, all such reports were made on a timely basis, except that a Form 3 and a Form 4 were filed late by Mr. Jester in connection with his appointment as our Chief Financial Officer in September 2017 and the corresponding grant of stock options to purchase 150,000 shares of our common stock in connection with such appointment on September 5, 2017.

Code of Ethics
We have adopted a Code of Business Conduct that applies to all of our directors, officers and employees, including our principal executive officer and principal financial officer. The Code of Business Conduct is posted on our website at http://ir.humanigen.com/corporate-governance.cfm.  
Audit Committee Matters
We have established an audit committee of the Board, which is currently comprised of Mr. Morris, as chair of the Committee, Mr. Boehm, and Mr. Savage. The Board has determined that Mr. Morris is an audit committee financial expert. Because we are not listed on a national securities exchange and there are no listing standards applicable to us, the Board makes determinations as to director independence based on the definition10-K under the NASDAQ rules.  Consistent with the discussion in Item 13 below regarding director independence, the Board has determined that each member of the Audit Committee is currently independent.
heading “Information about our Executive Officers.”

ITEM 11.  EXECUTIVE COMPENSATION

Summary Compensation Table

The following summary compensation table shows, for the fiscal years ended December 31, 2017 and December 31, 2016, information regarding the compensation awarded to, earned by or paid to our most highly compensated executive officers for 2017, and all individuals serving as our principal financial officer during the fiscal year ended December 31, 2017. We refer to these officers as our “named executive officers.”

               All  
              Stock Option Other     
    Salary Bonus Awards Awards Compensation Total
Name and Principal Position Year ($) ($)(8) ($)(5) ($)(6) ($)(7) ($)
Cameron Durrant, M.D., MBA (1)
 2017          600,000       180,000                   -                        -                             -           780,000
Chairman & Chief Executive Officer 2016          500,000       126,000       608,768         2,312,588                    16,833        3,564,189
Morgan Lam (2)
 2017          380,000                   -                   -            190,440                             -           570,440
Former Chief Scientific Officer 2016          357,500         70,000                   -            221,720                             -           649,220
Greg Jester (3)
 2017            96,667       145,000                   -              33,120                             -           274,787
Chief Financial Officer              
David L. Tousley, MBA, CPA (4)
 2017               -               -                   -            184,920                  310,385           495,305
 Former Interim Chief Financial Officer 2016                 -               -                   -                   -                  333,788           333,788
(1)Appointed as Chairman January 7, 2016 and as Chief Executive Officer on March 1, 2016.
(2)Appointed as Chief Operating Officer on February 1, 2016 and promoted to Chief Scientific Officer on September 13, 2016. Mr. Lam resigned as Chief Scientific Officer effective January 15, 2018.
(3)Appointed Chief Financial Officer on September 5, 2017.
(4)Appointed as Interim Chief Financial Officer on October 14, 2016. Mr. Tousley resigned as Interim Chief Financial Officer effective August 11, 2017.
(5)
The amounts in this column represent the aggregate grant date fair value of stock awards granted to Dr. Durrant related to his service during bankruptcy proceedings, computed in accordance with FASB ASC Topic 718. See Note 10 of the notes to our Consolidated Financial Statements included elsewhere in this Annual Report on Form 10‑K for a discussion of all assumptions made by us in determining the grant date fair value of our equity awards.
(6)
The amounts in this column represent the aggregate grant date fair value of option awards granted to each named executive officer, computed in accordance with FASB ASC Topic 718. See Note 10 of the notes to our Consolidated Financial Statements included elsewhere in this Annual Report on Form 10‑K for a discussion of all assumptions made by us in determining the grant date fair value of our equity awards.
(7)Amounts reflected in this column for fiscal year 2016 are (a) for Dr. Durrant, $16,833 in Board fees paid to Dr. Durrant prior to his becoming Chairman and Chief Executive Officer.  Amounts for Mr. Tousley represent consulting fees for services rendered in 2017 and 2016, pursuant to his Engagement Agreement.
(8)
For calendar year 2016, Dr. Durrants bonus opportunity was pro-rated for the period commencing July 1, 2016 and ending on December 31, 2016.  The target bonus opportunity for calendar year 2016 amounted to $180,000.  The Board determined Dr. Durrant’s bonus for 2016 to be $126,000, for which we have recorded an accrual for this amount in the Consolidated Financial Statements for the year ended December 31, 2016 and 2017. The Compensation Committee of the Board determined Dr. Durrant’s bonus for calendar year 2017 to be $180,000. Dr. Durrant has agreed to defer receipt of the bonus pending completion of a fundraising transaction.  Mr. Jester received 100% of his bonus in immediately exercisable stock options.  The number of options granted was based on the grant date fair value as of March 9, 2018, reflecting a 10-year term.
Narrative to Summary Compensation Table
We offer stock options to our employees, including our named executive officers, as the long-term incentive component of our compensation program. Our stock options allow our employees to purchase shares of our common stock at a price equal to the fair market value of our common stock on the date of grant.
In 2017, we issued stock options to certain of our named executive officers.  On February 21, 2017, Mr. Lam was issued stock options to purchase 100,000 shares of our common stock at an exercise price of $2.92. The options were to vest and become exercisable in 12 equal quarterly increments beginning on April 1, 2017. Mr. Lam’s options were determined to have a grant date fair value of $0.2 million. Mr. Lam resigned effective January 15, 2018. As a result as of January 15, 2018 all of Mr. Lam’s unvested options were forfeited.  All remaining vested options will be forfeited on March 16, 2018 unless exercised.

On September 5, 2017, Mr. Jester was issued stock options to purchase 150,000 shares of our common stock at an exercise price of $0.33. The options will vest and become exercisable in 12 equal quarterly increments beginning on October 1, 2017. Mr. Jester’s options were determined to have a grant date fair value of $0.03 million.

On February 21, 2017, Mr. Tousley was issued stock options to purchase 100,000 shares of our common stock at an exercise price of $2.92. Mr. Tousley’s options were determined to have a grant date fair value of $0.2 million.  These options were fully vested on the grant date and, unless exercised, will be forfeited on August 10, 2018.

Outstanding Equity Awards at 2017 Fiscal Year End
The following table shows certain information regarding outstanding equity awards held by our named executive officers as of December 31, 2017.
    Option Awards
                 
    Number of  Number of      
    Securities  Securities      
    Underlying  Underlying      
    Unexercised  Unexercised  Option Option
    Options  Options  Exercise Expiration
Name   Exercisable  Unexercisable  Price ($) Date
Cameron Durrant, M.D., MBA(1)   434,592   608,430  $3.38 9/13/2026
Morgan Lam(2)    1,875   3,125  $4.72 6/1/2025
 (3)    8,333   91,667  $3.38 9/13/2026
 (4)    24,999   75,001  $2.92 2/20/2027
Greg Jester(5)    12,500   137,500  $0.33 9/4/2027
David L. Tousley, MBA, CPA(6)   100,000   100,000  $2.92 2/20/2027
(1)
On September 13, 2016, Dr. Durrant was issued stock options to purchase 1,043,022 shares of the Company’s common stock at an exercise price of $3.38. The options will vest and become exercisable in 12 equal quarterly increments beginning on October 1, 2016.
(2)
On June 1, 2015, Mr. Lam was issued stock options to purchase 5,000 shares of the Company’s common stock at an exercise price of $4.72. One quarter of the options vested on June 1, 2016 and the remaining options will vest and become exercisable in 36 equal monthly increments thereafter. Mr. Lam resigned effective January 15, 2018 and all remaining unvested options were forfeited.  All remaining vested options will be forfeited on March 16, 2018 unless exercised.
(3)
On September 13, 2016, Mr. Lam was issued stock options to purchase 100,000 shares of the Company’s common stock at an exercise price of $3.38. The options were to vest and become exercisable in 12 equal quarterly increments beginning on October 1, 2016. Mr. Lam resigned effective January 15, 2018 and all remaining unvested options were forfeited.  All remaining vested options will be forfeited on March 16, 2018 unless exercised.
(4)
On February 21, 2017, Mr. Lam was issued stock options to purchase 100,000 shares of the Company’s common stock at an exercise price of $2.92.  The options were to vest and become exercisable in 12 equal quarterly increments beginning April 1, 2017.  Mr. Lam resigned effective January 15, 2018 and all remaining unvested options were forfeited.  All remaining vested options will be forfeited on March 16, 2018 unless exercised.
(5)On September 5, 2017, Mr. Jester was issued stock options to purchase 150,000 shares of the Company’s common stock at an exercise price of $0.33.  The options will vest and become exercisable in 12 equal quarterly increments beginning on October 1, 2017.
(6)On February 21, 2017, Mr. Tousley was issued stock options to purchase 100,000 shares of our common stock at an exercise price of $2.92.  The options were fully vested on the grant date.  Mr. Tousley resigned August 11, 2017.  All remaining vested options will be forfeited August 10, 2018 unless exercised.
Retirement Benefits
We have established a 401(k) tax-deferred savings plan, which permits participants, including our named executive officers, to make contributions by salary deduction pursuant to Section 401(k) of the Internal Revenue Code. We are responsible for administrative costs of the 401(k) plan. We may,contained in our discretion, make matching contributions to the 401(k) plan. No employer contributions have been made to date.
Employment Agreement with Dr. Durrant

On September 13, 2016, we entered into a new employment agreement with Cameron Durrant, MD,definitive proxy statement for our chairman and chief executive officer (the Agreement). The Agreement provides for an initial2022 annual base salary for Dr. Durrantmeeting of $600,000 as well as eligibility for an annual bonus targeted at 60% of his salary based on the achievements of objectives set and agreed to by the Board. Such bonus may be a mix of cash and stock, as determined by the Board in its sole discretion. For calendar year 2016, Dr. Durrants bonus opportunity was pro-rated for the period commencing July 1, 2016 and ending on December 31, 2016.  The target bonus opportunity for calendar year 2016 amounted to $180,000.  The Board determined Dr. Durrant’s bonus for 2016 to be $126,000, for which we have recorded an accrual for this amount in the Consolidated Financial Statements for the year ended December 31, 2016 and 2017. The Compensation Committee of the Board determined Dr. Durrant’s bonus for calendar year 2017 to be $180,000.  Both amounts are expected to be paid in cash.  Dr. Durrant has agreed to defer receipt of the bonus pending completion of a fundraising transaction. Dr. Durrant is entitled to participate in our benefit plans available to other executives, including its retirement plan and health and welfare programs.

Under the Agreement, Dr. Durrant is entitled to receive certain benefits upon termination of employment under certain circumstances. If we terminate Dr. Durrants employment for any reason other than Cause, or if Dr. Durrant resigns for Good Reason (each as defined in the Agreement), Dr. Durrant will receive twelve months of base salary then in effect and the amount of the actual bonus earned by Dr. Durrantstockholders under the agreement for the year prior to the year of termination, pro-rated based on the portion of the year Dr. Durrant was employedcaption “EXECUTIVE COMPENSATION” is hereby incorporated by us during the year of termination.

The Agreement additionally provides that if Dr. Durrant resigns for Good Reason or we or our successor terminates his employment within the three month period prior to and the 12 month period following a Change in Control (as defined in the Agreement), we must pay or cause its successor to pay Dr. Durrant a lump sum cash payment equal to two times (a) his annual salary as of the day before his resignation or termination plus (b) the aggregate bonus received by Dr. Durrant for the year preceding the Change in Control or, if no bonus had been received, at minimum 50% of the target bonus. In addition, upon such a resignation or termination, all outstanding stock options held by Dr. Durrant will immediately vest and become exercisable.
Offer Letter with Mr. Jester
In connection with his appointment as CFO, we entered into an offer letter with Mr. Jester (the “Offer Letter”) pursuant to which Mr. Jester will be eligible to receive the following compensation: (i) an initial annual base salary of $290,000; (ii) an annual bonus pursuant to the Company’s annual bonus plan for executive officers, as then in effect, with a maximum bonus (if any) equal to 50% of Mr. Jester’s salary for the bonus period; and (iii) certain medical, retirement and other benefits generally available to the Company’s other employees. Under the Offer Letter, Mr. Jester was also eligible to receive stock options to purchase 150,000 shares of the Company’s common stock pursuant to the terms and conditions set forth in a stock option agreement governed by the Company’s 2012 Equity Incentive Plan.
Engagement Agreement with Mr. Tousley
Mr. Tousley served as interim Chief Financial Officer pursuant to an engagement agreement (the “Engagement Agreement”) between himself and the Company until his resignation effective August 11, 2017. Under the Engagement Agreement, we paid Mr. Tousley at a rate of $225 per hour and reimbursed him for all travel and out of pocket expenses incurred in connection therewith.
2012 Equity Incentive Plan
On September 13, 2016, the Board approved an amendment to our 2012 Equity Plan to increase the number of shares of our common stock available for issuance under the 2012 Equity Plan by 3,000,000 shares and to increase the annual maximum aggregate number of shares subject to stock option awards that may be granted to any one person under the Equity Plan from 125,000 to 1,100,000.  On March 9, 2018, the Board approved an amendment to our 2012 Equity Plan to increase the number of shares of our common stock available for issuance under the 2012 Equity Plan by 16,050,000 shares.
Director Compensation
Pursuant to our Director Compensation Program, each member of our Board of Directors during 2017 who was not our employee was eligible to compensation for his service, as follows.  At the option of the director, such fees were payable in cash or immediately exercisable stock options having a grant date fair value equal to the equivalent cash compensation owed.
·Board of Directors member: $40,000;
·Audit committee member: $10,000;
·Audit committee chair: $20,000;
·Compensation committee member: $6,000;
·Compensation committee chair: $12,000;
·Nominating and corporate governance committee member: $4,000; and
·Nominating and corporate governance committee chair: $8,000.
  The following table shows for the fiscal year ended December 31, 2017 certain information with respect to the compensation of our non-employee directors:
  Fees Earned             
  or Paid  Option  Stock  All Other    
  in Cash  Awards  Awards  Compensation  Total 
Name ($)(1)  ($)  ($)  ($)  ($) 
Timothy Morris, CPA(2)
  72,000   -   -   -   72,000 
Ronald Barliant, JD(3)
  64,000   -   -   -   64,000 
Dale Chappell, M.D., MBA (4)
  30,000   -   -   -   30,000 
Ezra Friedberg (5)
  40,500   -   -   -   40,500 
(1)The amounts in this column reflect retainers earned under the Board of Directors Compensation Program for fiscal year 2017.
(2)Mr. Morris elected to receive 50% of his director compensation in immediately exercisable stock options and 50% in cash.  The number of options granted was based on the grant date fair value as of March 9, 2018, reflecting a ten year term.
(3)Mr. Barliant elected to receive 100% of his director compensation in immediately exercisable stock options.  The number of options granted was based on the grant date fair value as of March 9, 2018, reflecting a ten year term.
(4)Dr. Chappell resigned from the Board of Directors on November 9, 2017.  In light of his status as a controlling stockholder, Dr. Chappell agreed to forego any separate compensation for his service on the Board of Directors.
(5)Mr. Friedberg resigned from the Board of Directors on November 9, 2017.
reference.

ITEM 12.  SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS

Security Ownership Information

The following table presents information regarding beneficial ownershipcontained in our definitive proxy statement for our 2022 annual meeting of our common stock as of March 23, 2018 by:

·each stockholder or group of stockholders known by us to be the beneficial owner of more than 5% of our common stock;
·each of our directors;
·each of our named executive officers; and
·all of our current directors and executive officers as a group.
Beneficial ownershipstockholders under the caption “SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT” is determined in accordance with the rules of the SEC, and thus represents voting or investment power with respect to our securities. Unless otherwise indicated below, to our knowledge, the persons and entities named in the table have sole voting and sole investment power with respect to all shares beneficially owned, subject to community property laws where applicable.
Percentage ownership of our common stock is based on 109,207,786 shares of our common stock outstanding as of March 23, 2018.
Shares of our common stock subject to options that are currently exercisable or exercisable within 60 days of March 23, 2018 are deemed to be outstanding and to be beneficially ownedhereby incorporated by the person holding the options but are not deemed to be outstanding for the purpose of computing the percentage ownership of any other person. Unless otherwise indicated, the address of each of the individuals and entities named below is c/o Humanigen, Inc., 1000 Marina Boulevard, Suite 250, Brisbane, CA  94005.
Name and Address of Beneficial Owner 
Shares of
Common
Stock
Beneficially
Owned
  
Percentage
of Shares
Beneficially
Owned
 
5% Stockholders      
Entities affiliated with Black Horse Capital LP(1)
  66,870,851   61.2%
Nomis Bay LTD(2)
  33,573,530   30.7%
Named Executive Officers and Directors        
Cameron Durrant, M.D., MBA(3)
  4,390,468   4.0%
Morgan Lam(4)
  87,810   * 
David L. Tousley, MBA, CPA(5)
  100,000   * 
Greg Jester(6)
  488,282   * 
Ronald Barliant, JD(7)
  300,469   * 
Timothy Morris, CPA (8)
  138,235   * 
Robert Savage  10,000   * 
Rainer Bohem  -   * 
All current executive officers and directors as a group (8 persons)(9)
  5,515,444   5.1%
(1)Number of shares based solely on information reported on the Schedule 13D filed with the SEC on March 1, 2018, reporting beneficial ownership as of February 27, 2018, by BHC, BHCMF, Cheval, Black Horse Capital Management LLC, or BH Management, and Dale Chappell.  According to the report, BHC has sole voting and dispositive power with respect to 5,996,710 shares, BHCMF has shared voting and dispositive power with respect to 13,997,832 shares, Cheval has shared voting and dispositive power with respect to 46,876,309 shares, BH Management has sole voting and dispositive power with respect to 52,873,019 shares and Dr. Chappell has shared voting and dispositive power with respect to 66,870,851 shares.  The business address of each of BHC, BHCMF, BH Management and Dr. Chappell is c/o Opus Equum, Inc. P.O. Box 788, Dolores, Colorado 81323. The business address of Cheval is P.O Box 309G, Ugland House, Georgetown, Grand Cayman, Cayman Islands KY1-1104.
(2)
Number of shares based solely on information reported on the Schedule 13D filed with the SEC on March 5, 2018, reporting beneficial ownership as of February 27, 2018, by Nomis.  Nomis has sole voting and dispositive power over all 33,573,530 shares. The business address of Nomis is West Essex House, 3rd Floor, 45 Reid Street, Hamilton, Bermuda HM12.
(3)
Includes options to purchase 4,254,885 shares of common stock that may be exercised within 60 days of March 23, 2018.
(4)
Includes options to purchase 87,810 shares of common stock that may be exercised within 60 days of March 23, 2018.
(5)
Includes options to purchase 100,000 shares of common stock that may be exercised within 60 days of March 23, 2018.
(6)
Includes options to purchase 488,282 shares of common stock that may be exercised within 60 days of March 23, 2018.
(7)
Includes options to purchase 300,649 shares of common stock that may be exercised within 60 days of March 23, 2018.
(8)
Includes options to purchase 138,235 shares of common stock that may be exercised within 60 days of March 23, 2018.
(9)
Includes options to purchase 5,088,265 shares of common stock that may be exercised within 60 days of March 23, 2018.
Equity Compensation Plan Information
The following table sets forth information as of December 31, 2017 with respect to shares of common stock that may be issued under our existing equity compensation plans.
        Number of 
        Securities 
        Remaining 
  Number of Weighted-  Available for 
  Securities to be Average  Issuance Under 
  Issued Upon Exercise  Equity 
  Exercise of Price of  Compensation 
  Outstanding Outstanding  Plans (Excluding 
  Options, Options,  Securities 
  Warrants Warrants  Reflected in 
  and Rights and Rights  Column (a)) 
Plan Category (a) (b)  (c) 
Equity compensation plans approved by security holders(1)  734,835  $5.33   - 
             
Equity compensation plans not approved by security holders  1,713,548   2.97   1,286,452 
Total  2,448,383  $3.67   1,286,452 
(1)
Represents shares reserved for issuance under the 2001 Stock Plan and the 2012 Equity Incentive Plan, as amended and restated. On September 13, 2016, the Board approved an amendment to the 2012 Equity Incentive Plan (the “Equity Plan Amendment”) to increase the number of shares of our common stock available for issuance under the 2012 Equity Plan by 3,000,000 shares. The Equity Plan Amendment was not approved by our stockholders. See Note 10 of the notes to our Consolidated Financial Statements included elsewhere in this Annual Report on Form 10‑K for a discussion of the material features of the 2012 Equity Incentive Plan.
reference.

ITEM 13.  CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS, AND DIRECTOR INDEPENDENCE

Related Party Transactions

Term Loans

The information contained in our definitive proxy statement for our 2022 annual meeting of stockholders under the captions “CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS” and Restructuring Transactions


The Restructuring Transactions were completed on February 27, 2018.  For additional information regarding the Restructuring Transactions, see “Restructuring Transactions” in Item 1 of this Annual Report on Form 10-K.

Director Independence
We are not currently a listed issuer. However, we use the definition of “independent” set forth in NASDAQ Marketplace rules in determining whether a director“DIRECTOR INDEPENDENCE” is independent in the capacity of director. Consistent with NASDAQ’s independence criteria, our Board has affirmatively determined that each of our current directors, and all of our directors who served in 2017, other than Dr. Chappell and Dr. Durrant, our Chief Executive Officer, is independent. NASDAQ's independence criteria include a series of objective tests, such as that the director is not an employee of the Company and has not engaged in various types of business dealings with us. In addition, as further requiredhereby incorporated by NASDAQ rules, our Board has subjectively determined as to each independent director that no relationship exists that, in the opinion of the board of directors, would interfere with each such person's exercising independent judgment in carrying out his or her responsibilities as a director. In making these determinations on the independence of our directors, our Board considered the relationships that each such director has with us and all other facts and circumstances the board deemed relevant in determining independence, including the beneficial ownership of our capital stock by each such person.
We have established an audit committee, a compensation committee and a nominating and corporate governance committee.
reference.

ITEM 14.  PRINCIPAL ACCOUNTANT FEES AND SERVICES

Independent Registered Public Accounting Firm’s Fees

The following table represents aggregate fees billed to usinformation contained in our definitive proxy statement for our 2022 annual meeting of stockholders under the years ended December 31, 2017 and 2016caption “RATIFICATION OF HORNE LLP AS OUR INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM” is hereby incorporated by our independent registered accounting firm, HORNE LLP.

reference.

  Year ended December 31, 
  2017 2016 
Audit fees(1) $246,354  $250,140 
Tax fees (2)  15,695   12,000 
Total fees $262,049  $262,140 
65
(1)
Audit fees in 2017 and 2016 include fees billed or incurred by HORNE LLP for professional services rendered in connection with the annual auditTable of our Consolidated Financial Statements for each year and the review of our quarterly reports on Form 10-Q and consents associated with registration statements.
Contents
(2)Fees for services consist of tax compliance, including the preparation and review of federal and state tax returns.
All fees described above were pre-approved by the audit committee in accordance with the requirements of Regulation S-X under the Exchange Act.
Pre-Approval Policies and Procedures
The audit committee’s policy is to pre-approve all audit and permissible non-audit services rendered by our independent registered public accounting firm. The audit committee can pre-approve specified services in defined categories of audit services, audit-related services and tax services up to specified amounts, as part of the audit committee’s approval of the scope of the engagement of our independent registered public accounting firm or on an individual case-by-case basis before our independent registered public accounting firm is engaged to provide a service. The audit committee has determined that the rendering of tax-related services by our independent registered public accounting firm is compatible with maintaining the principal accountant’s independence for audit purposes. Our independent registered public accounting firm has not been engaged to perform any non-audit services other than tax-related services and as indicated above.

PART IV

ITEM 15.  EXHIBITS AND FINANCIAL STATEMENT SCHEDULES

(a)       The following documents are filed as part of this report:

(1)Financial Statements—See Index to Consolidated Financial Statements at Part I, Item 8 on page F-1 of this Annual Report on Form 10-K.

(2)All financial statement schedules have been omitted because they are not applicable or not required or because the information is included elsewhere in the financial statements or the Notes thereto.

(3)See the accompanying Index to Exhibits filed as a part of this Annual Report, which list is incorporated by reference in this Item.exhibits listed under Part (b) below.

(b)       Exhibits:

    Incorporated by Reference Filed or 
Exhibit No. Exhibit Description Form+ Date Number Furnished
Herewith
 
3.1 Amended and Restated Certificate of Incorporation of the Registrant. 8-K July 6, 2016 3.1   
3.1.1 Certificate of Amendment to the Amended and Restated Certificate of Incorporation of the Registrant. 8-K August 7, 2017 3.1   
3.1.2 Certificate of Amendment to the Amended and Restated Certificate of Incorporation of the Registrant, as amended. 8-K February 28, 2018 3.1   
3.1.3 Certificate of Amendment to the Amended and Restated Certificate of Incorporation of the Registrant, as amended 8-K September 11, 2020 3.1   
3.2 Second Amended and Restated Bylaws of the Registrant. 8-K August 7, 2017 3.2   
4.1 Warrant to Purchase Stock, by and between the Registrant and MidCap Financial SBIC, LP, dated as of June 19, 2013. 8-K June 24, 2013 10.2   
4.2† Common Stock Purchase Warrant, dated June 30, 2016, by and between the Registrant and Savant Neglected Diseases, LLC. 10-Q September 23, 2016 4.1   
4.3 Registration Rights Agreement, dated as of February 27, 2018, by and among the Registrant and Black Horse Capital Master Fund, Black Horse Capital, Cheval Holdings, Ltd., and Nomis Bay LTD. 10-Q May 8, 2018 4.6   
4.4 Registration Rights Agreement, dated as of June 2, 2020, by and among the Registrant and the investors party thereto S-1 June 15, 2020 10.21   
4.5 Description of Securities.  10-K March 10, 2021 4.5   
10.1** 2012 Equity Incentive Plan, as amended and restated. 10-Q August 10, 2015 10.2   
10.1.1** Amendment to the 2012 Equity Incentive Plan, dated as of September 13, 2016. 

S-8

(File No. 333-214110)

 October 14, 2016 10.2   
10.1.2** Amendment to the 2012 Equity Incentive Plan, effective March 9, 2018. 10-Q May 8, 2018 10.2   
10.2** Form of Notice of Grant and Stock Option Agreement under the 2012 Equity Incentive Plan. 

10-12G

(File No. 000-54735)

 June 12, 2012 10.8   
10.3** Form of Notice of Grant and Stock Option Agreement under the 2012 Equity Incentive Plan (Outside Directors). 10-K March 13, 2014 10.37   
10.4** Form of Notice of Stock Unit Award under the 2012 Equity Incentive Plan. 8-K April 24, 2015 10.1   

66

    Incorporated by Reference Filed or 
Exhibit No. Exhibit Description Form+ Date Number Furnished
Herewith
 
10.5** Form of Director and Officer Indemnification Agreement.  10-K  March 10, 2021  10.5   
10.6 Development and License Agreement, dated May 11, 2004, by and between the Registrant and the Ludwig Institute for Cancer Research. 

10-12G/A

(File No. 000-54735)

 August 7, 2012 10.13   
10.7 License Agreement, dated April 7, 2006, by and between the Registrant and the Ludwig Institute for Cancer Research. 

10-12G/A

(File No. 000-54735)

 August 7, 2012 10.14   
10.7.1 Amendment to License Agreement, dated October 9, 2008, by and between the Registrant and the Ludwig Institute for Cancer Research. 10-Q May 8, 2014 10.8   
10.7.2 Amendment to License Agreement, dated June 8, 2011, by and between the Registrant and the Ludwig Institute for Cancer Research. 10-Q May 8, 2014 10.9   
10.8† Non-Exclusive License Agreement, dated October 15, 2010, by and between the Registrant, BioWa, Inc. and Lonza Sales AG. 

10-12G/A

(File No. 000-54735)

 September 12, 2012 10.16   
10.9 Clinical Trial Agreement, dated as of July 24, 2020, by and between the Registrant and The National Institute of Allergy and Infectious Diseases (NIAID), part of the National Institutes of Health (NIH), as represented by the Division of Microbiology and Infectious Diseases (DMID). 8-K July 30, 2020 10.1  
10.10** Humanigen, Inc. 2020 Omnibus Incentive Compensation Plan, effective September 11, 2020. 8-K September 11, 2020 10.1  
10.11** Form of Incentive Stock Option Award Agreement under 2020 Omnibus Incentive Plan 10-Q August 12, 2021 10.1  
10.12** Form of Non-qualified Stock Option Award Agreement under 2020 Omnibus Incentive Plan. 10-Q August 12, 2021 10.2  
10.13** Amended and Restated Employment Agreement, dated as of October 29, 2020, by and between the Registrant and Dr. Cameron Durrant.  10-K March 10, 2021 10.14  
10.14** Employment Agreement dated as of August 1, 2020, by and between the Registrant and Timothy Morris. 10-K  March 10, 2021 10.15  
10.15** Amended and Restated Employment Agreement, dated as of September 24, 2020, by and between the Registrant and Dr. Dale Chappell.  10-K March 10, 2021 10.17  
10.16†† License Agreement, dated as of November 3, 2020, by and among the Registrant, KPM Tech Co., Ltd and Telcon RF Pharmaceutical, Inc.  10-K March 10, 2021 10.18   
10.17 Amended and Restated Cooperative Research and Development Agreement, dated as of January 21, 2021, by and among the Registrant, Joint Program Executive Office for Chemical, Biological, Radiological, and Nuclear Defense and Nuclear Defense and Biomedical Advanced Research and Development Authority, Office of the Assistant Secretary for Preparedness and Response  10-K March 10, 2021 10.19  
10.18†† Master Services Agreement effective as of January 8, 2021 between the Registrant and EVERSANA Life Science Services, LLC 8-K January 14, 2021 10.1  

67
(b)          See
Table of Contents

Incorporated by ReferenceFiled or
Exhibit No.Exhibit DescriptionForm+DateNumberFurnished
Herewith
10.19§Loan and Security Agreement, dated March 10, 2021, by and between the Registrant and Hercules Capital, Inc.10-QMay 13, 202110.3
10.20**Description of Registrant’s Director Compensation PolicyX
21.1List of Subsidiaries.X
23.1Consent of Horne LLP.X
31.1Certification of Chief Executive Officer pursuant to Rule 13a-14(a)or 15d-14(a) of the Securities Exchange Act of 1934, as amended.X
31.2Certification of Chief Financial Officer pursuant to Rule 13a-14(a) or 15d-14(a) of the Securities Exchange Act of 1934, as amended.X
32.1***Certification of Chief Executive Officer pursuant to 18 U.S.C. §1350.X
32.2***Certification of Chief Financial Officer pursuant to 18 U.S.C. §1350.X

101.INS

XBRL Instance Document—The instance document does not appear in the Interactive Data File because its

XBRL tags are embedded within the Inline XBRL document.

101.SCHXBRL Taxonomy Extension Schema
101.CALXBRL Taxonomy Extension Calculation Linkbase Document
101.DEFXBRL Taxonomy Extension Definition Linkbase Document
101.LABXBRL Taxonomy Extension Label Linkbase Document
101.PREXBRL Taxonomy Extension Presentation Linkbase Document
104Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101)

**Indicates management contract or compensatory plan.

***The certifications attached as Exhibits 32.1 and 32.2 that accompanies this Annual Report on Form 10-K are not deemed filed with the accompanying IndexSecurities and Exchange Commission and are not to Exhibits filedbe incorporated by reference into any filing of Registrant under the Securities Act of 1933, as a partamended, or the Securities Exchange Act of 1934, as amended, whether made before or after the date of this Annual Report.Report on Form 10-K, irrespective of any general incorporation language contained in such filing.

†Confidential treatment has been granted with respect to certain portions of this exhibit. Omitted portions have been filed separately with the Securities and Exchange Commission.

††Certain portions of this exhibit have been omitted pursuant to Item 601(b)(10)(iv) of Regulation S-K. The Company will furnish supplementally an unredacted copy of such exhibit to the Securities and Exchange Commission or its staff upon request.

§ Schedules omitted pursuant to Item 601(a)(5) of Regulation S-K. The Registrant agrees to furnish supplementally a copy of any omitted schedule upon request by the SEC.

68
(c)Other schedules are not applicable. 

ITEM 16.  FormFORM 10-K Summary.

SUMMARY.

None.

SIGNATURES


Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

authorized on February 28, 2022.

 Humanigen, Inc. 
   
 
By:
/s/ Cameron Durrant, M.D., MBA
 

Cameron Durrant, M.D., MBA

Chief Executive Officer and Chairman of the Board of
Directors

 

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

Signature Title Date
     
/s/ Cameron Durrant    
/s/ Cameron Durrant, M.D., MBA 
Chairman of the Board of Directors and Chief Executive Officer

(Principal Executive Officer)
 
March 23, 2018
Cameron DurrantFebruary 28, 2022
     
/s/ Greg JesterTimothy Morris 
Timothy Morris, CPAChief Operating Officer and Chief Financial Officer (Principal
(Principal
Financial
Officer and Principal Accounting Officer)
 
March 23, 2018
Greg JesterFebruary 28, 2022
     
/s/ Ronald Barliant JD Director 
March 23, 2018
Ronald Barliant, JD DirectorFebruary 28, 2022
     
/s/ Rainer Boehm    
Rainer Boehm, M.D. Director 
March 23, 2018
February 28, 2022
     
/s/ Timothy MorrisCheryl Buxton    
Timothy MorrisCheryl Buxton Director 
March 23, 2018
February 28, 2022
     
/s/ Robert G. SavageDale Chappell    
Robert G. SavageDale Chappell, M.D., MBA Director 
March 23, 2018
February 28, 2022
Index to Consolidated Financial Statements
Contents
   
/s/ John Hohneker
John Hohneker, M.D.DirectorFebruary 28, 2022
/s/ Kevin Xie, Ph.D.
Kevin Xie, Ph.D.DirectorFebruary 28, 2022

69

Index to Consolidated Financial Statements

Humanigen, Inc.

Contents

(PCAOB ID 171)

F-2

F-3

F-5

F-4

F-6

F-5

F-7

F-6

F-8

F-9

F-7
REPORT

REPORTS OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM



To Shareholders and the Board of Directors of Humanigen, Inc.


Opinion on the Financial Statement

Statements

We have audited the accompanying consolidated balance sheets of Humanigen, Inc. and its subsidiaries (the "Company"“Company”) as of December 31, 20172021 and 2016, and2020, the related consolidated statements of operations, and comprehensive loss, shareholders'stockholders' equity (deficit), and cash flows for the years then ended, and the related notes to the consolidated financial statements (collectively, the financial statements)“financial statements”). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 20172021 and 2016,2020, and the results of its operations and its cash flows for the years then ended, in conformity with accounting principles generally accepted in the United States of America.


We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (“PCAOB”), the Company's internal control over financial reporting as of December 31, 2021, based on criteria established in Internal Control — Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission in 2013, and our report dated February 28, 2022 expressed an unqualified opinion on the effectiveness of the Company's internal control over financial reporting.

Going Concern Uncertainty


The accompanying financial statements have been prepared assuming that the Company will continue as a going concern. As discussed in Note 1 to the financial statements, the Company has suffered recurring losses from operations and its total liabilities exceed its total assets. This raises substantial doubt about the Company's ability to continue as a going concern. Management's plans in regard to these matters also are described in Note 1. The financial statements do not include any adjustments that might result from the outcome of this uncertainty.


Basis for Opinion


These financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on the Company’s financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (“PCAOB”)PCAOB and are required to be independent with respect to the Company in accordance with U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.


We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the auditaudits to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. The Company is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audits we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of the Company's internal control over financial reporting. Accordingly, we express no such opinion.


Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.

Critical Audit Matter

The critical audit matter communicated below is a matter arising from the current period audit of the financial statements that was communicated or required to be communicated to the audit committee and that: (1) relates to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective or complex judgments. The communication of the critical audit matter does not alter in any way our opinion on the financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relates.

Completeness of Accrual for Contract Manufacturing Costs

As disclosed in note 4 to the financial statements, the Company has accrued contract manufacturing costs of $16.2 million as of December 31, 2021. The Company’s consolidated statement of operations includes contract manufacturing costs within research and development expenses of $188.8 million for the year ended December 31, 2021. The Company’s determination of accrued contract manufacturing costs at each reporting period requires significant judgment by management, as estimates are based on a number of factors, including management’s knowledge of the contracts and associated timelines, invoicing to date from third party vendors, and the provisions in the contracts, including cancellation and termination charges and charges for product that does not meet specifications.

F-2



The completeness of the contract manufacturing cost accrual is subject to risk of estimation uncertainty related to services having been provided where invoices are not received from third party vendors prior to the time the consolidated financial statements are issued.

Auditing the completeness of the Company’s accrual for contract manufacturing costs requires significant auditor judgment, subjectivity and effort in performing appropriate procedures to evaluate the completeness and accuracy of the audit evidence management utilizes in these estimates.

To evaluate the completeness of the accrual, our audit procedures included, among others, inspecting the contracts with contract manufacturing organizations (“CMOs”) and evaluating the underlying data used in the estimates of the services provided. We also corroborated the progress of the contracts with the Company’s contract monitors and with confirmations obtained directly from CMOs, as well as tested invoices received from vendors throughout the Company’s fiscal year and subsequent to the balance sheet date.

/s/ HORNE LLP


We have served as the Company's auditor since 2015.


2016.

Ridgeland, Mississippi

March 27, 2018


February 28, 2022

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To Shareholders and the Board of Directors of Humanigen, Inc.

Opinion on the Internal Control Over Financial Reporting

We have audited Humanigen, Inc. and its subsidiaries’ (the “Company”) internal control over financial reporting as of December 31, 2021, based on criteria established in Internal Control — Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission in 2013. In our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2021, based on criteria established in Internal Control — Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission in 2013.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (“PCAOB”), the consolidated balance sheets of the Company as of December 31, 2021 and 2020, the related consolidated statements of operations, stockholders’ equity (deficit) and cash flows for the years then ended, and the related notes and our report dated February 28, 2022 expressed an unqualified opinion.

Basis for Opinion

The Company’s management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting in the accompanying Management’s Annual Report on Internal Control Over Financial Reporting. Our responsibility is to express an opinion on the Company’s internal control over financial reporting based on our audit. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk. Our audit also included performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

Definition and Limitations of Internal Control Over Financial Reporting

A company's internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company's internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of the company's assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

/s/ HORNE LLP

Ridgeland, Mississippi

February 28, 2022

Humanigen, Inc.

Consolidated Balance Sheets

(in thousands, except share data)

December 31, 2021

December 31, 2020

Assets

Current assets:

Cash and cash equivalents

$

70,016

$

67,737

Prepaid expenses and other current assets

955

475

Total current assets

70,971

68,212

 

Other assets

90

90

Total assets

$

71,061

$

68,302

 

Liabilities and stockholders’ equity (deficit)

Current liabilities:

Accounts payable

$

44,698

$

15,366

Accrued expenses

19,882

3,175

Deferred revenue

4,145

1,874

Total current liabilities

68,725

20,415

 

Non-current liabilities:

Deferred revenue

1,018

2,342

Long-term debt

25,006

0-

Total liabilities

94,749

22,757

 

Commitments and contingencies (Note 7)

 

Stockholders’ equity (deficit):

Common stock, $0.001 par value: 225,000,000 shares authorized at December 31, 2021 and December 31, 2020; 64,027,629 and 51,626,508 shares issued and outstanding at December 31, 2021 and December 31, 2020, respectively

64

52

Additional paid-in capital

587,327

419,923

Accumulated deficit

(611,079

)

(374,430

)

Total stockholders’ equity (deficit)

(23,688

)

45,545

Total liabilities and stockholders’ equity (deficit)

$

71,061

$

68,302

See accompanying notes.

Humanigen, Inc.

Consolidated Statements of Operations

(in thousands, except share and per share data)

Twelve Months Ended December 31,

2021

2020

 

Revenue:

License revenue

$

3,595

$

312

Total revenue

3,595

312

 

Operating expenses:

Research and development

213,115

72,713

General and administrative

23,252

15,797

Total operating expenses

236,367

88,510

 

Loss from operations

(232,772

)

(88,198

)

 

Other expense:

Interest expense

(2,264

)

(1,336

)

Other expense, net

(1,613

)

(1

)

Net loss

$

(236,649

)

$

(89,535

)

 

Basic and diluted net loss per common share

$

(4.04

)

$

(2.42

)

 

Weighted average common shares outstanding used to calculate basic and diluted net loss per common share

58,533,637

36,963,030

  December 31,  December 31, 
  2017  2016 
Assets      
Current assets:      
Cash and cash equivalents $737  $2,906 
Prepaid expenses and other current assets  813   1,643 
Total current assets  1,550   4,549 
         
Property and equipment, net  19   68 
Restricted cash  101   101 
Total assets $1,670  $4,718 
         
Liabilities and stockholders’ deficit        
Current liabilities:        
Accounts payable $3,330  $4,072 
Accrued expenses  3,307   736 
Term loans payable  18,018   3,016 
Total current liabilities  24,655   7,824 
Notes payable to vendors  1,351   1,273 
Total liabilities  26,006   9,097 
         
Stockholders’ deficit:        
  Common stock, $0.001 par value: 85,000,000 shares authorized at December 31,        
 2017 and December 31, 2016; 14,946,712 and 14,977,397 shares issued and
outstanding at  December 31, 2017 and December 31, 2016, respectively
  15   15 
  Additional paid-in capital  238,246   236,216 
  Accumulated deficit  (262,597)  (240,610)
Total stockholders’ deficit  (24,336)  (4,379)
Total liabilities and stockholders’ deficit $1,670  $4,718 

See accompanying notes.

Humanigen, Inc.

Consolidated Statements of Operations and Comprehensive Loss

Stockholders’ Equity (Deficit)

(in thousands, except share and per share data)

Total

Additional

Stockholders’

Common Stock

Paid-In

Accumulated

Equity

Shares

Amount

Capital

Deficit

(Deficit)

Balances at January 1, 2020

22,806,890

$

22

$

270,555

$

(284,895

)

$

(14,318

)

Issuance of common stock, net of expenses

25,745,744

27

139,733

-

139,760

Issuance of common stock for conversion of debt

2,397,916

3

4,313

-

4,316

Issuance of common stock in exchange for services

45,064

-

302

-

302

Issuance of stock options for payment of compensation

-

-

180

-

180

Issuance of common stock for payment of compensation

17,317

-

78

-

78

Issuance of warrant for services

-

-

2,070

-

2,070

Issuance of common stock upon option exercise

390,668

-

572

-

572

Issuance of common stock upon warrant exercise

222,909

-

10

-

10

Stock-based compensation expense

-

-

2,110

-

2,110

Net loss

-

-

-

(89,535

)

(89,535

)

Balances at December 31, 2020

51,626,508

52

419,923

(374,430

)

45,545

Issuance of common stock, net of expenses

11,835,104

12

159,903

-

159,915

Issuance of stock options for payment of compensation

-

-

168

-

168

Issuance of common stock upon option exercise

566,017

-

1,965

-

1,965

Stock-based compensation expense

-

-

5,368

-

5,368

Net loss

-

-

-

(236,649

)

(236,649

)

Balances at December 31, 2021

64,027,629

$

64

$

587,327

$

(611,079

)

$

(23,688

)


  Year Ended December 31, 
  2017  2016 
Operating expenses:      
Research and development $11,165  $10,449 
General and administrative  7,866   8,376 
Total operating expenses  19,031   18,825 
         
Loss from operations  (19,031)  (18,825)
         
Other expense:        
Interest expense  (3,056)  (131)
Other income, net  431   125 
Reorganization items, net  (331)  (8,188)
Net loss  (21,987)  (27,019)
Other comprehensive income  -   - 
Comprehensive loss $(21,987) $(27,019)
         
Basic and diluted net loss per common share $(1.47) $(2.78)
         
Weighted average common shares outstanding used to        
   calculate basic and diluted net loss per common share  14,975,370   9,707,877 

See accompanying notes.

Humanigen, Inc.

Consolidated Statements of Stockholders’ Deficit
 (in thousands, except share and per share data)
        Additional     Total 
  Common Stock  Paid-In  Accumulated  Stockholders’ 
  Shares  Amount  Capital  Deficit  Deficit 
Balances at January 1, 2016  4,450,994  $4  $219,319  $(213,591) $5,732 
Issuance of common stock to officer and directors  323,155   1   1,451   -   1,452 
Issuance of common stock, net of issuance costs  7,147,035   7   10,125   -   10,132 
Issuance of common stock in settlement of litigation  631,358   1   (1)  -   - 
Issuance of common stock for services  65,000   -   198   -   198 
Issuance of common stock upon exercise of options  5,625   -   10   -   10 
Issuance of common stock upon vesting of restricted stock units  3,750   -   -   -   - 
Issuance of warrants in connection with acquisition of licenses  -   -   361   -   361 
Issuance of warrants in exchange for services  -   -   40   -   40 
Conversion of notes payable and related accrued interest and fees to common stock  2,350,480   2   3,385   -   3,387 
Beneficial conversion feature  -   -   484   -   484 
Stock-based compensation expense  -   -   844   -   844 
Comprehensive loss  -   -   -   (27,019)  (27,019)
Balances at December 31, 2016  14,977,397   15   236,216   (240,610)  (4,379)
Issuance of stock in connection with financing agreement  9,315   -   12   -   12 
Return of share of stock by advisor  (40,000)  -   -   -   - 
Stock-based compensation expense  -   -   2,115   -   2,115 
Write down in fair value of warrants  -   -   (97)  -   (97)
Comprehensive loss  -   -   -   (21,987)  (21,987)
Balances at December 31, 2017  14,946,712  $15  $238,246  $(262,597) $(24,336)
See accompanying notes.
Humanigen, Inc.

Consolidated Statements of Cash Flows

(in thousands)

 

 

Twelve Months Ended December 31,

 

 

 

2021

 

 

2020

 

Operating activities:

 

Net loss

 

$

(236,649

)

 

$

(89,535

)

Adjustments to reconcile net loss to net cash used in operating activities:

 

Stock based compensation expense

5,368

2,110

Non-cash interest expense related to debt financing

562

706

Issuance of common stock for payment of compensation

0-

 

 

78

Issuance of common stock in exchange for services

0-

302

Changes in operating assets and liabilities:

Prepaid expenses and other assets

(480

)

(166

)

Accounts payable

29,332

8,032

Accrued expenses

16,875

4,405

Deferred revenue

947

4,216

Net cash used in operating activities

(184,045

)

(69,852

)

 

Investing activities:

Purchase of intangible assets

0-

(20

)

Net cash used in investing activities

0-

(20

)

 

Financing activities:

Net proceeds from issuance of common stock

159,915

139,760

Proceeds from exercise of stock options

1,965

572

Net proceeds from issuance of long-term debt

24,444

10

Net proceeds from issuance of convertible notes

0-

467

Net proceeds from issuance of PPP loan

0-

83

Net proceeds from issuance of bridge notes

0-

350

Payments on PPP loan

0-

(83

)

Payments on bridge notes

0-

(2,400

)

Payments on convertible notes

0-

(518

)

Payments on notes payable to vendors

0-

(775

)

Net cash provided by financing activities

186,324

137,466

 

Net increase in cash and cash equivalents

2,279

67,594

Cash and cash equivalents, beginning of period

67,737

143

Cash and cash equivalents, end of period

$

70,016

$

67,737

 

Supplemental cash flow disclosure:

Cash paid for interest

$

1,519

$

672

Supplemental disclosure of non-cash investing and financing activities:

Issuance of stock options in lieu of cash compensation

$

168

$

180

Issuance of warrants for services

$

0-

$

2,070

Conversion of notes payable and related accrued interest and fees to common stock

$

0-

$

4,316


  Year Ended December 31, 
  2017  2016 
Operating activities:      
Net loss $(21,987) $(27,019)
Adjustments to reconcile net loss to net cash used in operating activities:        
Depreciation and amortization  48   102 
Gain on lease termination  -   (227)
Noncash interest expense  3,037   69 
Reorganization items related to debtor-in-possession financing  -   1,627 
Stock-based compensation expense  2,115   844 
Loss on sale of property and equipment  -   22 
Issuance of warrants in exchange for services  -   40 
Issuance of common stock for services  12   - 
Issuance of warrants in connection with acquisition of licenses  -   361 
Change in fair value of warrants issued in connection with acquisition of licenses  (97)  - 
Issuance of common stock in exchange for services  -   198 
Issuance of common stock to officer and directors  -   1,452 
Changes in operating assets and liabilities:        
Prepaid expenses and other assets  831   592 
Accounts payable  (520)  4,474 
Accrued expenses  2,571   (25)
Liabilities subject to compromise  (259)  (3,471)
Net cash used in operating activities  (14,249)  (20,961)
         
Investing activities:        
Proceeds from sale of property and equipment  -   11 
Changes in restricted cash  -   92 
Net cash provided by investing activities  -   103 
         
Financing activities:        
Net proceeds from issuance of common stock  -   10,132 
Net proceeds of stock option exercise  -   10 
Net proceeds from term loans  12,080   2,993 
Net proceeds from convertible notes payable  -   2,198 
Net cash provided by financing activities  12,080   15,333 
         
Net decrease in cash and cash equivalents  (2,169)  (5,525)
Cash and cash equivalents, beginning of period  2,906   8,431 
Cash and cash equivalents, end of period $737  $2,906 
         
Supplemental disclosure of non-cash investing and financing activities:        
   Conversion of notes payable and related accrued interest and fees to common stock $-  $3,387 
   Issuance of common stock for services $12  $- 
   Issuance of warrants in connection with acquisition of licenses $-  $361 
   Issuance of warrants in exchange for services $-  $40 
   Issuance of common stock in exchange for services $-  $198 
   Issuance of common stock to officer and directors $-  $1,452 
   Issuance of notes payable to vendors $-  $1,273 

See accompanying notes.

Notes to Consolidated Financial Statements

(in thousands unless otherwise indicated, except share and per share data)

1. Organization and Description of Business

Description of the Business


The Company

Humanigen, Inc. (the “Company” or “Humanigen”) was incorporated on March 15, 2000 in California and reincorporated as a Delaware corporation in September 2001 under the name KaloBios Pharmaceuticals, Inc. The Company completed its initial public offering in January 2013.2001. Effective August 7, 2017, the Company changed its legal name to Humanigen, Inc.


The Company has undergone a significant transformation since December 2015. As a result of challenges facing it at the time, on December 29, 2015, the Company filed a voluntary petition for bankruptcy protection under Chapter 11 of Title 11 of the U.S. Bankruptcy Code. On June 30, 2016, the Company’s Second Amended Plan of Reorganization, dated May 9, 2016, as amended (the “Plan”), became effective and the Company emerged from its Chapter 11 bankruptcy proceedings. Refer to Note 2 for additional details regarding the Company’s bankruptcy proceedings.
From the time of its emergence from bankruptcy to August 29, 2017, the Company’s focus was on its lead product candidate benznidazole for the treatment of Chagas disease, a parasitic illness that can lead to serious and potentially life-threatening long-term heart, intestinal and neurological problems. As more fully described in Note 6, the Company acquired certain worldwide rights to benznidazole on June 30, 2016 and, until August 29, 2017, was primarily focused on the development necessary to seek and obtain approval by the United States Food and Drug Administration (“FDA”) for benznidazole and the subsequent commercialization, if approved. According to FDA issued guidance, benznidazole is eligible for review pursuant to a 505(b)(2) regulatory pathway as a potential treatment for Chagas disease and, if it became the first FDA-approved treatment for Chagas disease, the Company would have been eligible to receive a Priority Review Voucher (“PRV”).
However, on August 29, 2017, the FDA announced it had granted accelerated and conditional approval of a benznidazole therapy manufactured by Chemo Research, S.L. (“Chemo”) for the treatment of Chagas disease and had awarded that manufacturer a neglected tropical disease PRV. Chemo’s benznidazole also has received Orphan Drug designation.  As a result of FDA’s actions and with the information currently available, the Company no longer expects to be eligible to receive a PRV with its own benznidazole candidate for the treatment of Chagas disease.  Accordingly, the Company has ceased development of benznidazole and is currently assessing a full range of options with respect to its benznidazole assets and development program. We also began an accelerated scientific assessment of emerging new possibilities for our monoclonal antibody assets and development programs.

On December 21, 2017, we reached an agreement with our Term Loan Lenders (as defined below) on a series of transactions, including the transfer and assignment of all of our assets related to benznidazole to an affiliate of one of the Term Loan Lenders, providing for, among other things, the satisfaction and extinguishment of our outstanding obligations under our Term Loan Credit Agreement (as defined below). We refer to these transactions herein as the “Restructuring Transactions.” On February 27, 2018, we completed the Restructuring Transactions. For further information regarding the Restructuring Transactions, see Notes 7 and 10.

Since the FDA’s August 29, 2017 announcement relating to benznidazole, we have shifted our primary focus toward developing our proprietary monoclonal antibody portfolio, which comprises lenzilumab and ifabotuzumab, for use in addressing significant, serious and potentially life-threatening unmet needs in oncology and immunology. Both of these product candidates are in the early stage of development and will require substantial time, expenses, clinical development, testing, and regulatory approval prior to commercialization. Furthermore, neither of these product candidates has advanced into a pivotal registration study and it may be years before such a study is initiated, if at all.
Lenzilumab is a recombinant monoclonal antibody, or mAb, that neutralizes soluble granulocyte-macrophage colony-stimulating factor, or GM-CSF, a critical cytokine in the inflammatory cascade associated with CAR-T-related side effects and in the growth of certain hematologic malignancies, solid tumors and other serious conditions. The Company expects to study lenzilumab’s potential in reducing serious adverse events associated with CAR-T therapy. The Company has begun to explore lenzilumab’s effectiveness in preventing or ameliorating neurotoxicity associated with CAR-T therapy, and potentially cytokine release syndrome (CRS). In addition, the Company continues dosing in a Phase 1 clinical trial in patients with CMML to identify the maximum tolerated dose, or MTD, or recommended Phase 2 dose of lenzilumab and to assess lenzilumab’s safety, pharmacokinetics, and clinical activity.  The Company has fully enrolled the total of 12 patients in the 200, 400 and 600 mg dose cohorts of its CMML trial, and are currently evaluating subjects in the highest dose cohort of 600 mg for continuing accrual. The Company also plans to review preliminary safety and efficacy results and anticipate completion of the ad hoc interim analysis in the first half of 2018. The Company may also use the interim data from the lenzilumab CMML Phase 1 study to determine the feasibility of rapidly commencing a Phase 1 study in JMML patients, or to explore progressing the CMML development program. JMML is a rare pediatric cancer, is associated with poor outcomes and a very high unmet medical need, for which there are no FDA-approved therapies.

Ifabotuzumab is an anti-Ephrin Type-A receptor 3, or EphA3, mAb that has the potential to offer a novel approach to treating solid tumors and hematologic malignancies, serious pulmonary conditions and as a CAR construct. EphA3 is aberrantly expressed on the surface of tumor cells and stroma cells in certain cancers. The Company has completed the Phase 1 dose escalation portion of a Phase 1/2 clinical trial in ifabotuzumab in multiple hematologic malignancies for which the preliminary results were published in the journal Leukemia Research in 2016.  An investigator-sponsored Phase 0/1 radio-labeled imaging trial of ifabotuzumab in glioblastoma multiforme, a particularly aggressive and deadly form of brain cancer, has begun at the Olivia-Newton John Cancer Institute in Melbourne, Australia.  

The Company is currently exploring partnering opportunities to enable further developmenta clinical stage biopharmaceutical company, developing its portfolio of ifabotuzumab.


Lenzilumabproprietary Humaneered® anti-inflammatory immunology and ifabotuzumab were each developed with ourimmuno-oncology monoclonal antibodies. The Company’s proprietary, patent-protectedpatented Humaneered® technology which consists of methodsplatform is a method for converting existing antibodies (typically murine) into engineered, high-affinity human antibodies designed for human therapeutic use, typically forparticularly with acute and chronic conditions.

Humanigen has developed or in-licensed targets or research antibodies, typically from academic institutions, and then applied its Humaneered technology to optimize them. The Company���s lead product candidate, lenzilumab, and its other two product candidates, ifabotuzumab (“iFab”) and HGEN005, are Humaneered monoclonal antibodies. The Company’s Humaneered antibodies are closer to human antibodies than chimeric or conventionally humanized antibodies and have a high affinity for their target. In addition, the Company believes its Humaneered antibodies offer further important advantages, such as high potency, a slow off-rate and a lower likelihood to induce an inappropriate immune response or infusion related reaction.

It is focusing its efforts on the development of its lead product candidate, lenzilumab. Lenzilumab is a monoclonal antibody that has been demonstrated to neutralize GM-CSF, a cytokine that the Company believes is of critical importance in the hyperinflammatory cascade, sometimes referred to as cytokine release syndrome (“CRS”) or cytokine storm, associated with COVID-19, chimeric antigen receptor T-cell (“CAR-T”) therapy and acute Graft versus Host Disease (“aGvHD”) associated with bone marrow transplants. The Company’s development programs in COVID-19, CAR-T and aGvHD are complementary in that all are focused on preventing or reducing cytokine storm in those disease states. It is possible that results observed from the Phase 3 trials in COVID-19 described below may be predictive of results in these other settings, which are also characterized by cytokine storm.

The Company has completed a Phase 3 registrational trial with lenzilumab in newly hospitalized COVID-19 patients and announced positive topline data from the study known as “LIVE-AIR” in March 2021. Following completion of the LIVE-AIR study, the Company commenced a series of efforts to attain authorization to commercialize lenzilumab for use in hospitalized COVID-19 patients in the United States and other territories. The Company’s regulatory initiatives have not yet resulted in any commercial authorization.

The next anticipated step in the Company’s development program for lenzilumab in COVID-19 is the release of results from the Accelerating COVID-19 Therapeutic Interventions and Vaccines-5 (“ACTIV-5”) and Big Effect Trial, in the “B” arm of the trial (“BET-B”), referred to as the ACTIV-5/BET-B trial, which is sponsored and funded by the National Institutes of Health (“NIH”). This study is evaluating lenzilumab in combination with remdesivir, compared to placebo and remdesivir, in hospitalized COVID-19 patients, as more fully described below.

A retrospective analysis of the LIVE-AIR study suggested that patients under the age of 85 and with a baseline C-reactive protein level (“CRP”) below 150 mg/L (the “CRP subgroup”) appeared to derive the greatest benefit from lenzilumab; therefore, the ACTIV-5/BET-B study protocol was modified to include baseline CRP below 150 mg/L as the primary analysis population. The ACTIV-5/BET-B study has reached its target enrollment with over 400 patients enrolled that met this criterion. Topline results from ACTIV-5/BET-B are expected to be released late in the first quarter or early in the second quarter of 2022. If confirmatory of the findings of the CRP subgroup from the Company’s LIVE-AIR study, the Company plans to include the results from ACTIV-5/BET-B in an amendment to its Emergency Use Authorization (“EUA”) submission, and to include these results in a responsive submission to Medicines and Healthcare products Regulatory Agency (“MHRA”) of the United Kingdom along with certain performance process qualification (“PPQ”) data around drug product batches, in the second quarter of 2022. In addition, as a result of feedback received from representatives of European Medicines Agency (“EMA”), if the ACTIV-5/BET-B data are confirmatory of the results of the findings of the CRP subgroup from the LIVE-AIR study, the Company intends to submit a Conditional Marketing Authorization (“CMA”) for lenzilumab with an Accelerated Approval request to EMA later in 2022.

See Management’s Discussion and Analysis of Financial Condition and Results of Operations included in Item 7 of this Annual Report on Form 10-K for additional information regarding the business.

Liquidity and Going Concern

The Company has incurred significant losses since its inception in March 2000 and had an accumulated deficit of $262.6 million as of December 31, 2017.  At December 31, 2017, the Company had a working capital deficit of $23.1 million, including $18.0 million in term loans payable.  On February 27, 2018, the Company issued 91,815,517 shares of common stock in exchange for the extinguishment of all term loans, related fees and accrued interest and received $1.5 million in cash proceeds.  See Notes 7 and 10 for a more detailed discussion of the Restructuring Transactions. On March 12, 2018 the Company issued 2,445,557 shares of common stock for proceeds of $1.1 million to accredited investors.  The Company will require additional financing in order to meet its anticipated cash flow needs during the next twelve months. The Company has financed its operations primarily through the sale of equity securities, debt financings, interest income earned on cash and cash equivalents, grants and the payments received under its agreements with Novartis Pharma AG and Sanofi Pasteur S.A. (“Sanofi”).  To date, none of the Company’s product candidates have been approved for sale and therefore the Company has not generated any revenue from product sales. Management expects operating losses to continue for the foreseeable future. As a result, the Company will continue to require additional capital through equity offerings, debt financing and/or payments under new or existing licensing or collaboration agreements. If sufficient funds are not available on acceptable terms when needed, the Company could be required to significantly reduce its operating expenses and delay, reduce the scope of, or eliminate one or more of its development programs. The Company’s ability to access capital when needed is not assured and, if not achieved on a timely basis, could materially harm its business, financial condition and results of operations. These conditions raise substantial doubt about the Company’s ability to continue as a going concern.

The Condensed Consolidated Financial Statements for the twelve monthsyears ended December 31, 20172021 and 2020 were prepared on the basis of a going concern, which contemplates that the Company will be able to realize assets and discharge liabilities in the normal course of business. The ability ofHowever, the Company to meethas incurred net losses since its inception, and has negative operating cash flows and its total liabilities exceed total assets. These conditions raised substantial doubt about the Company’s ability to continue as a going concern.

The Company continues to advance its efforts in support of the development of lenzilumab as a therapy for hospitalized COVID-19 patients. As of December 31, 20172021, the Company had cash and cash equivalents of $70.0 million. On September 8, 2021, U.S. Food and Drug Administration (“FDA”) declined to approve the Company’s EUA for lenzilumab. As more fully described under “Item 1. Business—Manufacturing and Raw Materials.” in this Annual Report on Form 10-K, the Company has entered into agreements with several contract manufacturing organizations (“CMOs”) to provide manufacturing, fill/finish and packaging services for lenzilumab. While the Company remains committed to its ongoing efforts seeking marketing authorization for lenzilumab to treat hospitalized COVID-19 patients in the U.S., UK and other territories, the Company has amended, and in some cases canceled, certain of these agreements, some of which were contingent on EUA, in an effort to reduce its future spending on lenzilumab production until and if authorization is received in the UK, European Union (“EU”), or U.S. (See Note 7 below). These changes may limit future production of lenzilumab but because most of the Company’s manufacturing agreements required payment of upfront fees upon execution and payments against performance of the services to be provided, often over a lengthy performance period, the changes are expected to decrease the Company’s manufacturing costs beginning in 2022 Considering the Company’s current cash resources and its current and expected levels of operating expenses, which includes combined accounts payable and accrued expenses recorded in the Company’s consolidated balance sheets as of December 31, 2021 of $64.6 million, and its capital commitments of $63.4 million during 2022 (see Note 7 below),management expects to need additional capital to fund the Company’s planned operations for the next twelve months. Management may seek to raise such additional capital through public or private equity offerings, including under the Controlled Equity OfferingSM Sales Agreement (the “Sales Agreement”) with Cantor Fitzgerald & Co. (“Cantor”), grant financing and support from governmental agencies, convertible debt, borrowings under its Loan and Security Agreement with Hercules Capital and other debt financings, collaborations, strategic alliances and marketing, supply, distribution, or licensing arrangements. Subsequent to December 31, 2021 and through the date of this filing, as disclosed in Note 13 below, the Company issued and sold 1,301,548 shares of common stock pursuant to the Sales Agreement and received net proceeds of approximately $3.7 million, after deducting fees and expenses. While management believes its plans to raise additional funds will alleviate the conditions that raise substantial doubt about the Company’s ability to continue as a going concern, is dependent uponthese plans are not entirely within the availabilityCompany’s control and cannot be assessed as being probable of future funding. The financial statements dooccurring. Additional funds may not include any adjustmentsbe available when the Company needs them on terms that mightare acceptable to the Company, or at all. If adequate funds are not available, the Company may be necessaryrequired to delay or reduce the scope of or eliminate one or more of its research or development programs, its commercialization efforts or its manufacturing commitments and capacity. In addition, if the Company is unable to continue as a going concern.  See Note 14 – “Subsequent Events.”


Delisting of Common Stock
On January 13, 2016, the Company’s common stock was suspended from the Nasdaq Global Market and began trading on the over-the-counter market under the KBIOQ symbol.  On January 26, 2016, NASDAQ filed a Form 25raises additional funds through collaborations, strategic alliances or marketing, supply, distribution, or licensing arrangements with the Securities and Exchange Commission to complete the delisting of the common stock, and the delisting was effective on February 5, 2016.  On June 30, 2016, upon emergence from bankruptcy, the ticker symbol for the trading of the Company’s common stock on the over-the-counter market reverted back to KBIO. On August 7, 2017, following the effectiveness of our previously reported name change, the Company’s common stock began trading on the OTCQB Venture Market under the new ticker symbol “HGEN”.
2. Chapter 11 Filing

On December 29, 2015, the Company filed a voluntary petition for bankruptcy protection under Chapter 11 of the U.S. Bankruptcy Code. The filing was made in the United States Bankruptcy Court for the District of Delaware (the “Bankruptcy Court”) (Case No. 15-12628 (LSS)).

In connection with financing efforts related to the Company’s bankruptcy proceedings, on April 1, 2016, the Company entered into a Debtor-in-Possession Credit and Security Agreement (the “Credit Agreement”) with a group of lenders (the “DIP Lenders”), pursuant to which the Company received $3.0 million in funds for working capital, bankruptcy-related costs, costs related to its plan of reorganization, payment of certain fees to the DIP Lenders and other costs associated with the ordinary course of business. Funds received under the Credit Agreement bore interest at a rate of 12% and were due and payable upon the Effective Date of the Plan, as defined below. Payment due under the Credit Agreement was convertible into shares of the Company’s common stock, with share amounts subject to calculation as provided in the Credit Agreement.

On April 1, 2016, the Company also entered into a Securities Purchase Agreement (the “SPA”) with the DIP Lenders. The SPA provided for the sale of the Company’s common stock, with share amounts subject to calculation as provided in the SPA, in respect of exit financing in the amount of $11 million to be received upon the Effective Date of the Plan, as defined below.

Plan of Reorganization

On May 9, 2016, the Company filed with the Bankruptcy Court the Plan and related amended disclosure statement pursuant to Chapter 11 of the Bankruptcy Code. On June 16, 2016, the Bankruptcy Court entered an order confirming the Plan.

  The Plan became effective on June 30, 2016 (the “Effective Date”) and the Company emerged from its Chapter 11 bankruptcy proceedings. In connection with such emergence, the Company consummated the transactions and other items described below.

·Pursuant to the SPA and in repayment of its obligations under the Credit Agreement, the Company issued an aggregate of 9,497,515 shares of its common stock to the DIP Lenders.
·The Company became obligated to issue 327,608 shares of common stock to the plaintiffs in litigation related to the Company’s 2015 private financing transaction in accordance with the settlement stipulation discussed below. As of December 31, 2016, all of the shares of common stock related to this settlement stipulation had been issued.
·The Company reserved 300,000 shares of common stock for issuance to the plaintiffs in class action litigation related to the events surrounding the Company’s former Chairman and Chief Executive Officer. As of December 31, 2016, all of the shares related to this settlement stipulation had been issued.
·The Company became obligated to issue 3,750 shares of common stock to a former director in satisfaction of claims against the Company. As of December 31, 2016, all of the shares related to this settlement stipulation had been issued.
·The Company reserved for issuance shares of common stock in an amount as yet to be determined in connection with the settlement of certain other claims and interests as set forth in the Plan. As of December 31, 2017, management does not believe the issuance of additional common stock for any such claims is probable.  As such, no accrual has been made in the Consolidated Financial Statements.
·The Company issued promissory notes in an aggregate principal amount of approximately $1.2 million to certain vendors in accordance with the Plan.  The notes are unsecured, bear interest at 10% per annum and are due and payable in full, including principal and accrued interest on June 30, 2019. The Company has accrued $0.1 million and $0.2 million in interest expense related to these promissory notes as of December 31, 2016 and December 31, 2017, respectively.
·The Company issued an aggregate of 323,155 shares of common stock to Cameron Durrant, Ronald Barliant, and David Moradi pursuant to an order by the Bankruptcy Court approving a one-time equity award for the Company’s Chief Executive Officer and two other directors. The Company recorded a charge of $1.5 million representing the fair value of the shares issued and classified $0.7 million and $0.8 million as Reorganization items, net and General and administrative expenses, respectively.
Bankruptcy Claims Administration

On February 29, 2016, the Company filed its schedules of assets and liabilities and statement of financial affairs (the “Schedules”) with the Bankruptcy Court. The Bankruptcy Court entered an order setting April 1, 2016 as the deadline for filing proofs of claim for creditors other than governmental units and June 27, 2016 as the bar date for filing proofs of claim by governmental units (together, the “Bar Date”). The Bar Date is the date by which non-government claims against the Company relating to the period prior to the commencement of the Company's Chapter 11 case were required to be filed if such claims were not listed in liquidated, non-contingent and undisputed amounts in the Schedules, or if the claimant disagrees with the amount, characterization or classification of its claim as reflected in the Schedules. Claims that are subject to the Bar Date and that were not filed on or prior to the Bar Date are barred from participating in any distribution that may be made under the Plan.

As of the Effective Date, approximately 195 proofs of claim were outstanding (including claims that were previously identified on the Schedules) totaling approximately $32 million. Prior to the Bar Date, certain investors filed a class action claim in the amount of $20 million in connection with events surrounding the Company’s former Chairman and Chief Executive Officer. On June 15, 2016, a settlement stipulation related to the class action suit was approved under order of the Bankruptcy Court. The settlement stipulation required the Company to issue 300,000 shares of common stock and submit a payment of $0.3 million to the claimants. During the year ended December 31, 2016, the 300,000 shares were issued and the $0.3 million payment was made. See Note 13 for additional information on this matter and settlement.

Separately, a claim was filed by certain investors in the Company’s 2015 private financing transaction totaling approximately $6.9 million. On May 9, 2016, a settlement stipulation related to this suit was approved under order of the Bankruptcy Court. The settlement stipulation required the Company to issue 327,608 shares of common stock and submit a payment of $0.3 million to an escrow account on behalf of the claimants. During the year ended December 31, 2016, the 327,608 shares were issued and the $0.3 million payment was made.  See Note 13 for additional information on this matter and settlement.

As of June 30, 2016, the Company emerged from bankruptcy. The Company expects the amounts remaining in Liabilities subject to compromise as of the Effective Date to be paid in accordance with the Plan. Accordingly, as of December 31, 2016, Liabilities subject to compromise have been reduced to zero and reclassified according to their payment terms.

In March 2016, the Company entered into a termination agreement (the “Lease Termination Agreement”) related to the lease of its prior facility in South San Francisco, California. The Lease Termination Agreement, approved by order of the Bankruptcy Court issued March 15, 2016, waived all damages related to early termination of the lease, relieved the Company of March rental expenses and set an effective termination date of March 31, 2016. In accordance with the termination of the lease, the Company wrote off remaining deferred rent liabilities of approximately $0.3 million and disposed of certain leasehold improvements and furniture and fixtures with a net book value of approximately $0.1 million. The resulting gain of $0.2 million is included in Reorganization items, net in the accompanying Consolidated Statement of Operations and Comprehensive Loss for the year ended December 31, 2016. Concurrent with the termination of its prior lease, the Company entered into a lease agreement for a new office facility in Brisbane, California. The new lease commenced in April 2016 and expired in March 2017. On February 16, 2017, the Company amended the lease to extend the term of the lease for an additional period of eighteen months such that the lease will expire on September 30, 2018.

The reconciliation of certain proofs of claim filed against the Company in the Bankruptcy Case, including certain General Unsecured Claims, Convenience Class Claims and Other Subordinated Claims, is ongoing.  As a result of its examination of the claims,third parties, the Company may ask the Bankruptcy Courthave to disallow, reduce, reclassifyrelinquish valuable rights to its technologies, future revenue streams or otherwise adjudicate certain claims the Company believes are subjectproduct candidates or to objection or otherwise improper.  Under thegrant licenses on terms of the Plan, the Company had until December 27, 2016that may not be favorable to file additional objections to disputed claims, subject to the Company’s right to seek an extension of this deadline from the Bankruptcy Court.  By Order, dated February 6, 2017, the Bankruptcy Court extended the claims objection deadline to June 26, 2017. By Order dated July 10, 2017, the Bankruptcy Court extended the claims objection deadline to September 25, 2017. By Order dated October 23, 2017, the Bankruptcy Court extended the claims objection deadline to December 26, 2017.  By Order dated January 19, 2018, the Bankruptcy Court extended the claims objection deadline to March 26, 2018.  The Company may compromise certain claims with or without specific prior approval of the Bankruptcy Court as set forth in the Plan and may identify additional liabilities that will need to be recorded or reclassified to liabilities subject to compromise. The resolution of such claims could result in material adjustments to the Company’s financial statements.
As of December 31, 2017, approximately $0.5 million in claims remain subject to review and reconciliation by the Company. The Company may file objectionsexpects that the results of the ACTIV-5/BET-B trial will be important to these claims after it completespotential investors. Accordingly, its ability to raise capital on favorable terms in the reconciliation process. As of December 31, 2017, the Company has recorded $0.06 million related to these claims in Accounts payable and Notes payable to vendors, which represents management’s best estimate of claims to be allowed by the Bankruptcy Court.

Although the Bankruptcy Case remains open, other than with respect to certain matters relatingfuture is linked closely to the implementationsuccess of the Plan, the administration of certain claims, or overthat trial, which the Bankruptcy Court may have otherwise retained jurisdiction, the Company is no longer operating under the direct supervision of the Bankruptcy Court.  The Company anticipates that the Bankruptcy Case will be closed following the completion of the claims reconciliation process.  

Bankruptcy Related Financing Arrangements

On April 1, 2016,  the Company entered into the Credit Agreement with Black Horse Capital Master Fund Ltd., as administrative agent and lender (“BHCMF” or “Agent”), Black Horse Capital LP, as a lender (“BHC”), Cheval Holdings, Ltd., as a lender (“Cheval”) and Nomis Bay LTD, as a lender (“Nomis” and, together with BHCMF, BHC and Cheval, the “Lenders”). The Credit Agreement provided for a debtor-in-possession credit facility in the original principal amount of $3.0 million (the “Term Loan”). The Credit Agreement provided that the Term Loan will be made by the Lenders at an original discount equal to $0.2 million (the “Upfront Fee”) and required the payment by the Company to the Lenders of a commitment fee equal to $0.2 million (the “Commitment Fee”). In accordance with the terms of the Credit Agreement, the Company used the proceeds of the Term Loan for working capital, bankruptcy-related costs, costs related to the Company’s plan of reorganization, the payment of certain fees and expenses owed to the Agent and the Lenders in connection with the Credit Agreement and other costs incurred in the ordinary course of business.

Pursuant to the terms of the Credit Agreement, the Term Loan bore interest at a rate per annum equal to 12.00%.
In accordance with the bidding procedures order entered by the Bankruptcy Court, the Term Loan and the SPA were together subject to competing, higher and better offers.

In connection with the Company’s obligations under the Credit Agreement, the Company executed in favor of the Agent an Intellectual Property Security Agreement, dated as of April 1, 2016 (the “IP Security Agreement”). Under the terms of the IP Security Agreement, the Company pledged all of its intellectual property to the Agent for the ratable benefit of the Lenders, as collateral for its obligations under the Credit Agreement.

The Credit Agreement provided that the outstanding principal balance of the Term Loan, plus accrued and unpaid interest, plus the Upfront Fee, plus the Commitment Fee and all other non-contingent obligations would mature on the earlier of an event of default under the Credit Agreement or the effective date of the Company’s plan of reorganization.  The Maturity Date was deemed to occur simultaneously with the Effective Date and, accordingly, on June 30, 2016, 2,350,480 shares of common stock were issued to the Lenders in repayment of the Company’s debt obligations under the Credit Agreement, including 201,436 shares to BHC, 470,096 shares to BHCMF, 503,708 shares to Cheval, 940,192 shares to Nomis and 235,048 shares to Cortleigh Limited (“Cortleigh”).  Pursuant to the terms of the Credit Agreement, the Company also paid $0.4 million to BHC in payment of its fees and expenses and $0.3 million to Nomis in payment of its fees and expenses.

The Company records discounts to convertible notes for the intrinsic value of conversion options embedded in debt instruments based upon the fair value of the underlying common stock at the commitment date of the note transaction exceeding the effective conversion price embedded in the note. The Company evaluated the Credit Agreement for beneficial conversion features and calculated a value of approximately $0.5 million, all of which was expensed as of the Effective Date.
In conjunction with the Credit Agreement, during the year ended December 31, 2016, the Company incurred the following expenses which have been charged to Reorganization items, net in the accompanying Consolidated Statements of Operations and Comprehensive Loss:
  Year ended 
  December 31, 2016 
Upfront fee $191 
Commitment fee  150 
Beneficial conversion feature  484 
Legal fees  802 
Total Credit Agreement expense $1,627 
On April 1, 2016, the Company also entered into the SPA with the Lenders. The SPA provides for the sale to the Lenders on the closing date of an aggregate of 5,885,000 shares of common stock, subject to adjustment as provided in the SPA, in respect of exit financing in the amount of $11 million (the “Exit Financing”) plus an exit financing commitment fee of $0.8 million payable by the Company to the Lenders, plus payment to the Lenders of their fees and expenses incurred in connection with the Exit Financing and the SPA. Nomis subsequently assigned twenty percent (20%) of its interest in the shares of common stock to be purchased by Nomis under the SPA and the Credit Agreement to Cortleigh (collectively with the Lenders, the “Purchasers”).
The consummation of the transactions contemplated by the SPA were contingent on, among other things, the funding of the Term Loan, the approval of the Bankruptcy Court of the Company’s plan of reorganization, and the simultaneous closing of the Company’s transaction with Savant. In addition, the closing of the transactions under the SPA were contingent upon the board of directors of the Company, upon the effectiveness of the confirmed plan of reorganization, consisting of (i) one director to be designated by Nomis; (ii) one director to be jointly designated by BHC, BHCF, and Cheval; (iii) the Chief Executive Officer of the Company to be designated jointly and unanimously by the Lenders; and (iv) two independent directors to be designated jointly and unanimously by the Lenders.

The issuance of the shares contemplated by the SPA was consummated on the Effective Date, and the Company issued to the Purchasers an aggregate of 7,147,035 shares of common stock for an aggregate purchase price of $11 million, including 612,501 shares to BHC, 1,429,407 shares to BHCMF, 1,531,610 shares to Cheval, 2,858,814 shares to Nomis and 714,703 shares to Cortleigh.  Pursuant to the terms of the SPA, the Company paid $0.4 million to BHC in payment of its fees and expenses and $0.3 million to Nomis in payment of its fees and expenses.

Under the terms of the SPA, the Company was required to use commercially reasonable efforts to cause a registration statement registering the resale by the Purchasers of the shares issuable under the SPA to be declared effective by the SEC no later than December 27, 2016.  The Company was obligated to keep the registration statement effective until all of the shares issued pursuant to the SPA are eligible for resale by the Purchasers without volume restrictions under an exemption from registration under the Securities Act. If the registration statement has not been declared effective by December 27, 2016 and any of the shares issued pursuant to the SPA are not eligible to be sold under Rule 144, then during each subsequent thirty day period (or portion thereof) until the registration statement is declared effective, the Company agrees to issue additional shares of common stock to the Purchasers in an amount equivalent to 10.0% of the shares originally purchased under the SPA that are then held by the Purchasers. On October 28, 2016, the SPA was amended to require the Company to file a registration statement by January 10, 2017 with effectiveness to be no later than March 31, 2017. On December 19, 2016, the SPA was amended again to require the Company to file a registration statement by March 17, 2017 with effectiveness to be no later than June 20, 2017.  The Company timely filed a registration statement on Form S-1 on March 17, 2017. On June 20, 2017 the SPA was amended again to require the Company to obtain effectiveness of the registration statement no later than July 30, 2017.  On July 14, 2017, the registration statement was declared effective by the SEC.

Governance Arrangements

On the Effective Date, the Company and Martin Shkreli, the Company’s former Chief Executive Officer, former Chairman and former controlling stockholder, entered into a Corporate Governance Agreement (the “Governance Agreement”), which provides for certain terms and conditions regarding the acquisition, disposition, holding and voting of securities of the Company by Mr. Shkreli. The Governance Agreement applies to all common stock owned by Mr. Shkreli or affiliates he controls.
Under the terms of the Governance Agreement, for 180 days following the Effective Date, Mr. Shkreli could not sell his shares of common stock at a price per share that was less than the greater of (x) $2.50 and (y) a 10% discount to the prior two week volume-weighted average price (the “Market Discount Price”). In addition, for 180 days following the 61st day after the Effective Date, the Company had a right to purchase any or all of Mr. Shkreli’s shares at a purchase price per share equal to the Market Discount Price. For a limited time, the Company also had a right of first refusal to purchase shares that Mr. Shkreli proposed to sell. Mr. Shkreli was also prohibited from transferring any shares to his affiliates or associates unless such transferee agreed to be subject to the terms of the Governance Agreement. Transfers of shares by Mr. Shkreli not made in compliance with the Governance Agreement would be null and void.
Under the terms of the Governance Agreement, Mr. Shkreli will not have any right to nominate directors to the Board of Directors of the Company and agreed in connection with any stockholder vote to vote his shares in proportion to the votes of the Company’s public stockholders. The Governance Agreement also prohibits Mr. Shkreli or his affiliates for a period of 24 months after the date of the Governance Agreement, from, among other things:
·purchasing any stock or assets of the Company;
·participating in any proposal for any merger, tender offer or other business combination, or similar extraordinary transaction involving the Company or any of its subsidiaries;
·seeking to control or influence the management, the Company’s Board or the policies of the Company; or
·submitting any proposal to be considered by the stockholders of the Company.
In addition, any material transaction between Mr. Shkreli or his associates and the Company, or relating to the Governance Agreement, cannot be taken without the prior approval of the Company’s Board.
The Governance Agreement provides for a mutual release between the Company and Mr. Shkreli of all claims and liabilities existing as of the date of execution.

On August 25 and August 26, 2016, Mr. Shkreli sold all of his shares of the Company to third party investors in private transactions.

Financial Reporting in Reorganization

The Company applied Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) 852, Reorganizations, which is applicable to companies under bankruptcy protection, and requires amendments to the presentation of key financial statement line items. It requires that the financial statements for periods subsequent to the Chapter 11 filing distinguish transactions and events that are directly associated with the reorganization from the ongoing operations of the business. Revenues, expenses, realized gains and losses, and provisions for losses that can be directly associated with the reorganization and restructuring of the business must be reported separately as reorganization items in the Condensed Consolidated Statements of Operations and Comprehensive Loss. The balance sheet must distinguish pre-petition liabilities subject to compromise from both those pre-petition liabilities that are not subject to compromise and from post-petition liabilities. Liabilities that may be subject to a plan of reorganization must be reported at the amounts expected to be allowed in the Company’s Chapter 11 case, even if they may be settled for lesser amounts as a result of the plan of reorganization or negotiations with creditors.

As of December 31, 2015, the Company had approximately $5.4 million recorded as Liabilities subject to compromise. In conjunction with the Company’s exit from bankruptcy, the Company reclassified remaining Liabilities subject to compromise totaling approximately $2.8 million, $0.8 million and $1.2 million to Accounts payable, Accrued expenses and Notes payable to vendors, respectively. For year ended December 31, 2016, the Company paid approximately $3.4 million related to Liabilities subject to compromise, issued $1.2 million in promissory notes to vendors, wrote off approximately $0.3 million in deferred rent liabilities related to its lease termination and reversed approximately $0.1 million in accrued expenses related to a claim that has been denied by the court, which as discussed above, were previously included in Liabilities subject to compromise. As of December 31, 2016, approximately $0.4 million and $1.2 million remain in Accounts payable and Notes payable to vendors, respectively. For the year ended December 31, 2017, the Company wrote off approximately $0.2 million in claims that had been reduced or for which a settlement had been reached at a lower amount than what had been previously accrued and also paid approximately $0.1 million in claims. As of December 31, 2017, approximately $0.06 million and $1.3 million remain in Accounts payable and Notes payable to vendors, respectively.  Remaining amounts will be paid based on terms of the Plan.
For the years ended December 31, 2017 and 2016, Reorganization items, net consisted of the following charges:
  Year ended December 31, 
  2017  2016 
Legal fees $297  $4,870 
Professional fees  34   1,218 
Debtor-in-possession financing  costs  -   1,143 
Beneficial conversion on debtor-in-possession financing  -   484 
Fair value of shares issued to officer and directors for service in bankruptcy  -   700 
Gain on lease termination  -   (227)
Total reorganization items, net $331  $8,188 

Cash payments for reorganization items totaled $0.9 million and $5.0 million for the years ended December 31, 2017 and 2016, respectively.

3.assured.

2. Summary of Significant Accounting Policies

Reclassifications

Certain prior year amounts in the Consolidated Financial Statements have been reclassified to conform to the current year's presentation. Such reclassifications had no effect on prior years’ net loss or stockholders’ equity (deficit).

Basis of Presentation and Use of Estimates

The accompanying Consolidated Financial Statements have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) and include all adjustments necessary for the presentation of the Company’s consolidated financial position, results of operations and cash flows for the periods presented. The Consolidated Financial Statements include the accounts of the Company and its wholly owned subsidiaries. These financial statements have been prepared on a basis that assumes that the Company will continue as a going concern, which contemplates the realization of assets and the satisfaction of liabilities and commitments in the normal course of business.

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts and disclosures reported in the Consolidated Financial Statements and accompanying notes. Actual results could differ materially from those estimates. The Company believes judgment is involved in determiningaccounting for the valuationdetermination of the financing derivative,revenue recognition, the fair value‑basedvalue-based measurement of stock‑basedstock-based compensation accruals, liabilities subject to compromise and warrant valuations.accruals. The Company evaluates its estimates and assumptions as facts and circumstances dictate. As future events and their effects cannot be determined with precision, actual results could differ from these estimates and assumptions, and those differences could be material to the Consolidated Financial Statements.

F-10


Concentration of Credit Risk

Cash, cash equivalents, and marketable securities consist of financial instruments that potentially subject the Company to a concentration of credit risk in the event of a default by the related financial institution holding the securities, to the extent of the value recorded in the consolidated balance sheet. The Company invests cash that is not required for immediate operating needs primarily in highly liquid instruments with lower credit risk. The Company has established guidelines relating to the quality, diversification, and maturities of securities to enable the Company to manage its credit risk.

Fair Value of Financial Instruments

Cash accounts payable and accrued liabilities are carried at cost, which approximates fair value given their short‑term nature. Marketable securities and cash equivalents are carried at fair value.

The fair value of financial instruments reflects the amounts that would be received upon the sale of an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date (exit price). The fair value hierarchy is based on three levels of inputs that may be used to measure fair value, of which the first two are considered observable, and the third is considered unobservable, as follows:
Level 1—Quoted prices in active markets for identical assets or liabilities.
Level 2—Inputs other than those included in Level 1 that are directly or indirectly observable, such as quoted prices for similar assets or liabilities in active markets; quoted prices for identical or similar assets or liabilities in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities.
Level 3—Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.
The Company measures the fair value of financial assets and liabilities using the highest level of inputs that are reasonably available as of the measurement date. The following tables summarize the fair value of financial assets (marketable securities) that are measured at fair value, and the classification by level of input within the fair value hierarchy:
  
Fair Value Measurements as of
December 31, 2017         
 
Investments: Level 1  Level 2  Level 3  Total 
                 
Money market funds $101  $  $  $101 
Total assets measured at fair value $101  $     $101 
  
Fair Value Measurements as of
December 31, 2016         
 
  Level 1  Level 2  Level 3  Total 
Investments:            
Money market funds $101  $  $  $101 
Total assets measured at fair value $101  $     $101 
The estimated fair value of the Term Loans payable and the Notes payable to vendors as of December 31, 2017 and 2016, based upon current market rates for similar borrowings, as measured using Level 3 inputs, approximate the carrying amounts as presented in the Consolidated Balance Sheets.
Cash, Cash Equivalents and Marketable Securities

The Company considers all highly liquid investments with an original maturity of 90 days or less at the time of purchase to be cash equivalents. Cash and cash equivalents consist of deposits with commercial banks in checking, interest‑bearinginterest-bearing and demand money market accounts.

Restricted Cash
Restricted cash at December 31, 2017 and 2016 of $0.1 million related to a standby letters of credit in the amount of $0.05 million issued in connection with certain insurance policy coverage maintained by the Company and restricted cash related to a credit card facility in the amount of $0.05 million.
Property and Equipment, Net
Property and equipment is stated at cost, less accumulated depreciation and amortization, and depreciated over the estimated useful lives of the respective assets of three years using the straight‑line method. Leasehold improvements are amortized on a straight‑line basis over the shorter of the useful lives or the non-cancelable term of the related lease. Maintenance and repair costs are charged as expense in the Statements of Operations and Comprehensive Loss as incurred.
Long‑Lived Assets
The Company evaluates the carrying value of its long‑lived assets, including intangible assets, whenever events or changes in circumstances indicate that the carrying value of the asset may be impaired. An impairment loss would be recognized when estimated future cash flows expected to result from the use of the asset, including disposition, are less than the carrying value of the asset. To date, the Company has not recorded any impairment charges on its long‑lived assets.

Debt IssueIssuance Costs

As of January 1, 2016, the Company adopted Financial Accounting Standards Board (“FASB”) Accounting Standards Update (“ASU”) No. 2015-03 and No. 2015-15, which require that debt

Debt issuance costs related to a recognized debt liability beare presented on the consolidated balance sheetsheets as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts.  As a result of our adoptiondiscounts and are amortized to interest expense over the term of the guidance, as of December 31, 2016, $0.5 million of deferred financing costs were reclassified to reducerelated debt using the Term loan payable in the Consolidated Balance Sheet.  As of December 31, 2017 all debt issuance costs had been fully amortized.  The guidance did not have a material impact on the consolidated financial statements.

effective interest method.

Research and Development Expenses

Development costs incurred in the research and development of new product candidates are expensed as incurred, including expenses that may or may not be reimbursed under research and development collaboration arrangements. Research and development costs include, but are not limited to, salaries, benefits, stock‑basedstock-based compensation, laboratory supplies, allocated overhead, fees for professional service providers and costs associated with product development efforts, including the cost of consultants and contract manufacturing organizations (“CMOs”) that manufacture drug products for use in our preclinical studies and clinical trials as well as all other expenses associated with preclinical studies and clinical trials. Research and development expenses under collaborative agreements approximate or exceed the revenue recognized under such agreements.

The Company estimates preclinical study and clinical trial expenses based on the services performed, pursuant to contracts with research institutions and clinical research organizations that conduct and manage preclinical studies and clinical trials on its behalf. In accruing service fees, the Company estimates the time period over which services will be performed and the level of effort to be expended in each period. If the actual timing of the performance of services or the level of effort varies from the estimate, the Company will adjust the accrual accordingly. Payments made to third parties under these arrangements in advance of the receipt of the related services are recorded as prepaid expenses until the services are rendered.


The Company records upfront and milestone payments made to third parties under licensing arrangements as an expense. Upfront payments are recorded when incurred and milestone payments are recorded when the specific milestone has been achieved.


Research

Revenue Recognition

The Company’s revenue to date has been generated primarily through license agreements and Development Services

Internal and external research and development costs incurredcollaboration agreements. The Company recorded $3.6 million and $0.3 million for the years ending December 31, 2021 and 2020, respectively, related to the November 3, 2020 License Agreement (the “South Korea Agreement”) with KPM Tech Co., Ltd. (“KPM”) and its affiliate, Telcon RF Pharmaceutical, Inc. (“Telcon”), as further described in connection with collaboration agreements are recognized as revenue inNote 3. Commencing January 1, 2018, the same period as the costs are incurred and are presented on a gross basis when the Company acts as a principal, has the discretion to choose suppliers, bears credit risk, and performs at least part of the services.
Revenue Recognition

The Company recognizes revenue when: (i) persuasive evidencein accordance with Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) Topic 606 – Revenue from Contracts with Customers. The core principle of ASC 606 is that an arrangement exists, (ii)entity should recognize revenue to depict the transfer of technology has been completed, delivery has occurred promised goods and/or services have been rendered,to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods and/or services. To determine the appropriate amount of revenue to be recognized for arrangements that the Company determines are within the scope of ASC 606, the Company performs the following steps: (i) identify the contract(s) with the customer, (ii) identify the performance obligations in the contract, (iii) determine the feetransaction price, (iv) allocate the transaction price to the performance obligations in the contract and (v) recognize revenue when (or as) each performance obligation is fixed satisfied.

Revenue under technology licenses and collaborative agreements typically consists of nonrefundable and/or determinable,guaranteed license fees, collaborative research funding, and (iv) collectability is reasonably assured. Payments received in advancevarious milestone and future product royalty or profit-sharing payments.

The fair value of work performed are recorded as deferred revenue and recognized when earned. All revenue recognized to datedeliverables under the Company’s collaborative agreements has been nonrefundable.

Multiple Element Arrangements
The Company evaluates revenue from agreements that have multiple elements to determine whether the components ofselling price if vendor specific objective evidence and third-party evidence is not available. Deliverables under the arrangement represent separate units of accounting. Management considers whether components of an arrangement representwill be separate units of accounting based upon whether certain criteria are met, including whether theif a delivered elementitem has stand‑alone value to the customer. To date, allcustomer on a standalone basis and if the arrangement includes a general right of return for the delivered item, delivery or performance of the undelivered item is considered probable and substantially in the Company’s control.

The Company recognizes upfront license payments as revenue upon delivery of the license only if the license has standalone value from any undelivered performance obligations and that value can be determined. The undelivered performance obligations typically include manufacturing or development services or research and development collaboration andand/or steering committee services. If the fair value of the undelivered performance obligations can be determined, then these obligations would be accounted for separately. If the license agreements have been assessedis not considered to have onestandalone value, then the license and other undelivered performance obligations would be accounted for as a single unit of accounting. Up‑frontIn this case, the license payments and license fees receivedpayments for a combined unit of accounting are deferred and recognized ratably over the projected performance period. Nonrefundable fees where the Company has no continuing performance obligations are recognized as revenue over the estimated period of when collectionthe performance obligations are performed or deferred indefinitely until the undelivered performance obligation is determined.

Whenever the Company determines that an arrangement should be accounted for as a single unit of accounting, the Company determines the period over which the performance obligations will be performed, and revenue will be recognized. Revenue is recognized using a proportional performance or straight-line method. The proportional performance method is used when the level of effort required to complete performance obligations under an arrangement can be reasonably estimated. The amount of revenue recognized under the proportional performance method is determined by multiplying the total payments under the contract, excluding royalties and payments contingent upon achievement of milestones, by the ratio of the level of effort performed to date to the estimated total level of effort required to complete performance obligations under the arrangement. If the Company cannot reasonably estimate the level of effort to complete performance obligations under an arrangement, the Company recognizes revenue under the arrangement on a straight-line basis over the period the Company is expected to complete its performance obligations. Significant management judgment is required in determining the level of effort required under an arrangement and the period over which the Company is expected to complete its performance obligations under an arrangement.

The Company’s collaboration agreements typically entitle the Company to additional payments upon the achievement of development, regulatory and sales performance-based milestones. If the achievement of a milestone is considered probable at the inception of the collaboration, the related milestone payment is included with other collaboration consideration, such as upfront fees and research funding, in the Company’s revenue calculation. Typically, these milestones are not considered probable at the inception of the collaboration. As such, milestones will typically be recognized in one of two ways depending on the timing of when the milestone is achieved. If the milestone is achieved during the performance period, then the Company will only recognize revenue to the extent of the proportional performance achieved at that date, or the proportion of the straight-line basis achieved at that date, and the remainder will be recorded as deferred revenue to be amortized over the remaining performance period. If the milestone is achieved after the performance period has completed and all performance obligations have been delivered, then the Company will recognize the milestone payment as revenue in its entirety in the period the milestone was achieved. See Note 3 for information on the South Korea Agreement.

Leases

The Company accounts for a contract as a lease when it has the right to control the asset for a period of time while obtaining substantially all of the asset's economic benefits. The Company determines if an arrangement is a lease or contains an embedded lease at inception. For arrangements that meet the definition of a lease, the Company determines the initial classification and measurement of its operating right-of-use asset and operating lease liability at the lease commencement date and thereafter if modified. The lease term includes any renewal options that the Company is reasonably assured to exercise. The present value of lease payments is determined by using the interest rate implicit in the lease, if that rate is readily determinable; otherwise, the Company uses its estimated secured incremental borrowing rate for that lease term.

In addition to rent, the leases may require the Company to pay additional amounts for taxes, insurance, maintenance, and all other revenue recognition criteriaexpenses, which are generally referred to as non-lease components. The Company has elected to not separate lease and non-lease components. Rent expense is recognized on a straight-line basis over the reasonably assured lease term based on the total lease payments and is included in operating expenses in the consolidated statements of operations.

The Company has made an accounting policy election to not recognize short-term leases, or leases that have been met.

Stock‑Baseda lease term of 12 months or less at commencement date, within its consolidated balance sheets and to recognize those lease payments in the consolidated statements of operations on a straight-line basis over the lease term.

Stock-Based Compensation Expense

The Company measures employee and director stock‑basedstock-based compensation expense for stock awards at the grant date, based on the fair value‑basedvalue-based measurement of the award, and the expense is recorded over the related service period, generally the vesting period, net of estimated forfeitures. The Company calculates the fair value‑basedvalue-based measurement of stock options using the Black‑ScholesBlack-Scholes valuation model and the single‑optionsimplified method and recognizes expense using the straight‑linestraight-line attribution approach.

F-12


Income Taxes

The Company accounts for income taxes under an asset‑and‑liabilityasset-and-liability approach. Deferred income taxes reflect the impact of temporary differences between assets and liabilities recognized for tax and financial reporting purposes measured by applying enacted tax rates and laws that will be in effect when the differences are expected to reverse, net operating loss carryforwards and tax credits. Valuation allowances are provided when necessary to reduce net deferred tax assets to an amount that is more likely than not to be realized. The Company’s policy is to include interest and penalties related to unrecognized tax benefits within the Company’s provision for income taxes.

Comprehensive Loss
Comprehensive loss represents net loss adjusted for the change during the periods presented in unrealized gains and losses on available‑for‑sale securities less reclassification adjustments for realized gains or losses included in net loss. The unrealized gains or losses are reported on the Consolidated Statements of Operations and Comprehensive Loss.

Net Loss Per Common Share

Basic net loss per common share is calculated by dividing the net loss attributable to common stockholders by the weighted‑averageweighted-average number of common shares outstanding during the period, without consideration for potentially dilutive securities. Diluted net loss per share is computed by dividing the net loss attributable to common stockholders by the weighted‑averageweighted-average number of common shares and potentially dilutive securities outstanding for the period determined using the treasury‑stocktreasury-stock and if‑convertedif-converted methods. For purposes of the diluted net loss per share calculation, stock options, restricted stock units and common stock warrants and convertible debt are considered to be potentially dilutive securities but are excluded from the calculation of diluted net loss per share because their effect would be anti‑dilutiveanti-dilutive and therefore, basic and diluted net loss per share were the same for all periods presented.

The Company’s potential dilutive securities, which include stock options, restricted stock unitswarrants and warrantsconvertible debt have been excluded from the computation of diluted net loss per share as the effect would be to reduce the net loss per common share and be antidilutive. Therefore, the denominator used to calculate both basic and diluted net loss per common share is the same in all periods presented.

The following shares subject to outstanding potentially dilutive securities have been excluded from the computations of diluted net loss per common share as the effect of including such securities would be antidilutive:

 

As of December 31,

 

2021

2020

 

Options to purchase common stock

 

 

4,429,906

 

 

 

3,728,149

 

Warrants to purchase common stock

 

 

31,238

 

 

 

51,238

 

Convertible debt

 

 

510,986

 

 

 

0-

 

 

 

 

4,972,130

 

 

 

3,779,387

 

  Year Ended December 31, 
  2017  2016 
Options to purchase common stock  2,448,383   1,835,835 
Warrants to purchase common stock  331,193   356,193 
   2,779,576   2,192,028 
Deferred Rent
The Company records its costs under facility operating lease agreements as rent expense. Rent expense is recognized on a straight‑line basis over the non‑cancelable term of the operating lease. The difference between the actual amounts paid and amounts recorded as rent expense is recorded to deferred rent.

Segment Reporting

The Company determines its segment reporting based upon the way the business is organized for making operating decisions and assessing performance. The Company operates in only one1 segment, which is related to the development of pharmaceutical products.

Recent Accounting Pronouncements


The Company qualifies as an “emerging growth company” (“EGC”) pursuant to

In December 2019, the provisions of the JOBS Act and has elected to take advantage of the extended transition period provided in Section 7(a)(2)(B) of the Securities Act which permits EGCs to defer compliance with new or revised accounting standards (the “EGC extension”) until non-issuers are required to comply with such standards. Accordingly, so long as the Company continues to qualify as an EGC, the Company will not have to adopt or comply with new accounting standards until non-issuers are required to comply with such standards.

In May 2014, the FASB issued ASU 2014-09, "Revenue from Contracts with Customers (Topic 606)." ASU 2014-09 completes the joint effort by the FASB and InternationalFinancial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2019-12, Simplifying the Accounting for Income Taxes. ASU No. 2019-12 eliminates certain exceptions related to improve financial reporting by creating common revenuethe approach for intra-period tax allocation, the methodology for calculating income taxes in an interim period and the recognition guidanceof deferred tax liabilities for U.S. GAAPoutside basis differences. It also clarifies and International Financial Reporting Standards.simplifies other aspects of the accounting for income taxes. ASU 2014-09 applies to all companies that enter into contracts with customers to transfer goods or services. ASU 2014-092019-12 is effective for public entities for interim and annual reporting periods beginning after December 15, 2017.  EGCs that have elected the EGC extension, including the Company, and non-public entities will be required to comply with the guidance for annual reporting periods beginning after December 15, 2018. Early application is not permitted and entities have the choice to apply ASU 2014-09 either retrospectively to each reporting period presented or by recognizing the cumulative effect of applying ASU 2014-09 at the date of initial application and not adjusting comparative information. The Company is currently evaluating the requirements of ASU 2014-09 and has not yet determined its impact on the Company's Consolidated Financial Statements.

In February 2016, the FASB issued ASU 2016-02, “Leases (Topic 842)”, which requires lessees to recognize on the balance sheet a right-of use asset, representing its right to use the underlying asset for the lease term, and a lease liability for all leases with terms greater than 12 months. The guidance also requires qualitative and quantitative disclosures designed to assess the amount, timing, and uncertainty of cash flows arising from leases. The standard requires the use of a modified retrospective transition approach, which includes a number of optional practical expedients that entities may elect to apply. EGCs that have elected the EGC extension, including the Company, and non-public entities will be required to comply with the guidance for annual reporting periods beginning after December 15, 2019, and interim periods within fiscal years beginning after December 15, 2020. Early application is permitted.2020, and interim periods within those fiscal years. The Company is currently evaluating the requirements ofadopted ASU 2016-02 and hasNo. 2019-12 on January 1, 2021, which did not yet determined itshave any impact onto the Company’s Consolidated Financial Statements.

In March 2016,August 2020, the FASB issued Accounting Standards Update 2016-09, Stock Compensation – ImprovementsASU No. 2020-06, “Accounting for Convertible Instruments and Contracts in an Entity’s Own Equity”, as part of its overall simplification initiative to Employee Share-Based Payment Accounting. This newreduce costs and complexity of applying accounting standard simplifies accounting for share-based payment transactions, including income tax consequences andstandards while maintaining or improving the classificationusefulness of the tax impact oninformation provided to users of financial statements. Among other changes, the statement of cash flows. EGCsnew guidance removes from U.S. GAAP, separation models for convertible debt that have electedrequire the EGC extension, includingconvertible debt to be separated into a debt and equity component, unless the Company,conversion feature is required to be bifurcated and non-publicaccounted for as a derivative or the debt is issued at a substantial premium. As a result, after adopting the guidance, entities will be required to complyno longer separately present such embedded conversion features in equity and will instead account for the convertible debt wholly as debt. The new guidance also requires use of the “if-converted” method when calculating the dilutive impact of convertible debt on earnings per share, which is consistent with the Company’s current accounting treatment under the current guidance. The guidance is effective for annual reporting periodsthe Company’s financial statements issued for fiscal years beginning after December 15, 2017. Early application is permitted.2023, and interim periods within those fiscal years, with early adoption permitted, but only at the beginning of the fiscal year. The Company is assessingearly adopted the potentialnew guidance on January 1, 2021, using the modified retrospective approach. The adoption did not have any impact to its financial statements and disclosures.

the Company’s Consolidated Financial Statements.

4. Investments
At

3. License Revenue

On November 3, 2020, the Company entered into the South Korea Agreement with KPM and Telcon (together, the “Licensee”). Pursuant to the South Korea Agreement, among other things, the Company granted the Licensee a license under certain patents and other intellectual property to develop and commercialize the Company’s lead product candidate, lenzilumab, for treatment of COVID-19 pneumonia, in South Korea and the Philippines (the “Territory”), subject to certain reservations and limitations. The Licensee will be responsible for gaining regulatory approval for, and subsequent commercialization of, lenzilumab in the Territory.

As consideration for the license, the Licensee has agreed to pay the Company (i) an up-front license fee of $6.0 million (or $4.5 million net of withholding taxes and other fees and royalties), payable promptly following the execution of the License Agreement, which was received in the fourth quarter of 2020, (ii) up to an aggregate of $14.0 million in two payments based on achievement by the Company of two specified milestones in the U.S., of which the first milestone was met in the first quarter of 2021 and $6.0 million (or $4.5 million net of withholding taxes and other fees and royalties) was received in the second quarter of 2021, and (iii) subsequent to the receipt by the Licensee of the requisite regulatory approvals, double-digit royalties on the net sales of lenzilumab in South Korea and the Philippines. The Licensee has agreed to certain development and commercial performance obligations. It is expected that the Company will supply lenzilumab to the Licensee for a minimum of 7.5 years at a cost-plus basis from an existing or future manufacturer. The Licensee has agreed to certain minimum purchases of lenzilumab on an annual basis.

The Company assessed the South Korea Agreement in accordance with ASC 606 and ASC 808 – Collaborative Arrangements and determined that its performance obligations under the South Korea agreement include (i) the exclusive, royalty-bearing, sublicensable license to lenzilumab, (ii) the manufacturing supply services to be provided by the Company, (iii) cooperation and assistance to be provided by the Company to the Licensee with regulatory authorities in the Territory and (iv) its obligation to serve on a joint steering committee (Items iii and iv above collectively, the “Research and Development Services” or the “Services”). The Company concluded that in the initial period leading up to regulatory approval in the Territory (the “Initial Period”), the license was not distinct since it was of no benefit to Licensee without the aforementioned Services and that, as such, the license and the Services should be bundled as a single performance obligation.

The Company has concluded that the nature of its promise is to stand ready to provide Research and Development Services as needed during the Performance Period (as defined below). The Company has further concluded that for all of the increments of time during the Performance Period its promise of standing ready to provide the Services is substantially the same. While the specific tasks performed during each increment of time will vary, the nature of the overall promise to provide the Services remains the same throughout the Performance Period.

Since the provision of the license and the Services are considered a single performance obligation, the $4.5 million upfront payment ($6.0 million net of withholding taxes and other fees and royalties) is being recognized as revenue ratably over the 29-month period through March of 2023 (the “Performance Period”), the expected period over which the Company conservatively expects the Services to be performed with approval in the Territory expected by the end of March 2023. In addition, since the milestone was achieved during the performance period, the Company recognized revenue to the extent of the proportion of the straight-line basis achieved as of the first quarter of 2021, with the remainder recorded as deferred revenue to be amortized over the remaining Performance Period. Therefore, in the years ended December 21, 2021 and 2020, the Company has recognized license revenue totaling approximately $3.6 million and $0.3 million, respectively.

Licensee’s purchases of lenzilumab for development purposes or for commercial requirements, represent options under the agreement and revenues will therefore be recognized when control of the product is transferred to Licensee.

Contract Liabilities

A contract liability of $5.2 million was recorded on the Consolidated Balance Sheets as deferred revenue as of December 31, 2017,2021 related to the amortized cost and fair valueSouth Korea agreement. There were no contract asset or deferred contract acquisition costs as of investments, with gross unrealized gains and losses, were as follows:

  
Amortized
Cost
  
Gross
Unrealized
Gains
  
Gross
Unrealized
Losses
  Fair Value 
Money market funds $101  $  $  $101 
Total investments $101  $  $  $101 
Reported as:                
Cash and cash equivalents             $ 
Restricted cash              101 
Total investments             $101 

At December 31, 2016,2021 associated with the amortized cost and fair valueSouth Korea agreement.

     Gross  Gross    
  Amortized  Unrealized  Unrealized    
  Cost  Gains  Losses  Fair Value 
Money market funds $101  $  $  $101 
Total investments $101  $  $  $101 
                 
Reported as:                
Cash and cash equivalents             $- 
Restricted cash, long-term              101 
Total investments             $101 
5. Property and Equipment
Property and equipment consists of

The following table presents changes in the following:

  December 31, 
  2017  2016 
Computer equipment and software $216  $216 
         
Accumulated depreciation and amortization  (197)  (148)
Property and equipment, net $19  $68 
Depreciation and amortization expenseCompany’s contract liability for the years ended December 31, 20172021 and 2020 (in thousands):

Balance at January 1, 2020

$

0-

Additions(1)

4,528

Deductions for performance obligations satisfied:

In current period

(312

)

Balance at December 31, 2020

4,216

Additions(2)

4,542

Deductions for performance obligations satisfied:

In current period

(1,721

)

In prior period

(1,874

)

Balance at December 31, 2021

$

5,163

 

_______________

(1) Up-front license fee of $6.0 million (or $4.5 million net of withholding taxes and other fees and royalties).

 

(2) Milestone payment of $6.0 million (or $4.5 million net of withholding taxes and other fees and royalties).

4. Accrued Expenses

Accrued expenses consist of the following (in thousands):

As of December 31,

2021

2020

Accrued contract manufacturing-related

$

16,174

$

0-

Accrued milestone and royalties

2,736

2,368

Accrued clinical trial-related

160

0-

Accrued compensation-related

44

530

Accrued other

768

277

$

19,882

$

3,175

5. Debt

Secured Term Loan Facility

On March 10, 2021, the Company executed a Loan and Security Agreement with Hercules Capital as agent for its affiliates serving as lenders thereunder (the “Term Loan”). The Term Loan provides a loan in the aggregate principal amount of up to $80.0 million, in three tranches. On March 29, 2021, the Company drew the initial $25.0 million tranche under the Term Loan. After giving effect to payment of fees and expenses associated with the draw, the Company received net proceeds of approximately $24.4 million. The Company is no longer entitled to draw the second tranche, which was to be in the amount of $35.0 million or $25.0 million, as it did not receive EUA for lenzilumab for the treatment of hospitalized patients with COVID-19 pneumonia by September 15, 2021. The Company may become entitled to draw another $20.0 million under the Term Loan through June 15, 2022, at the discretion of Hercules if the Company requests additional funding in support of the Company’s strategic initiatives, although there can be no assurances that Hercules would agree to provide such additional funding.

The Company will be required to repay amounts borrowed by March 1, 2025, subject to a one-year extension option that it may exercise if it has received FDA approval of a BLA for the use of lenzilumab for the treatment of hospitalized patients with COVID-19 pneumonia, and the FDA-authorized label for lenzilumab is generally consistent with that sought in the Company’s BLA filing, and the Company has paid Hercules certain fees and expenses associated with the extension.

Amounts drawn bear interest at a floating rate equal to the greater of either (i) 8.75% plus the prime rate as reported in The Wall Street Journal minus 3.25%, or (ii) 8.75% (such greater amount, the “Base Interest Rate”). Subject to there not having occurred any default or event of default under the loan agreement, the Base Interest Rate will be reduced by 25 basis points upon the occurrence of each of the first three of the four following events to occur:

if the Company achieves the protocol-specified primary efficacy endpoint for the pivotal Phase 3 study of lenzilumab for COVID-19, (clinicaltrials.gov identifier NCT04351152), and receives EUA for the use of lenzilumab for the treatment of hospitalized patients with COVID-19 pneumonia;

if the Company achieves product revenue from lenzilumab that is invoiced and/or recognized as revenue (as determined in accordance with GAAP) solely from the sale of lenzilumab (“Net Lenzilumab Product Revenue”) of at least $100.0 million;

if the Company achieves Net Lenzilumab Product Revenue of at least $250.0 million; and

if the Company achieves Net Lenzilumab Product Revenue of at least $350.0 million.

No principal payments will be due during an interest-only period, commencing on the initial borrowing date and continuing to April 1, 2023, subject to extension to April 1, 2024, and potentially October 1, 2024, under certain conditions. Following the interest-only period, the outstanding balance of the loan will be required to be repaid monthly, continuing through the maturity date.

The Company may prepay amounts drawn under the agreement in full prior to the maturity date then in effect, subject to payment of prepayment charges equal to:

2.0% of the amounts borrowed, if the prepayment occurs on or prior to March 29, 2022;

1.5% of the amounts borrowed, if the prepayment occurs after March 29, 2022 and before March 29, 2023; and

1.0% of the amounts borrowed, if the prepayment occurs after March 29, 2023 and before March 29, 2024.

In addition, on the earliest to occur of (i) the maturity date, (ii) the date the Company prepays the outstanding principal amount of the Term Loan, or (iii) the date the outstanding principal amount of the Term Loan otherwise becomes due, the Company will owe Hercules an end of term (“EOT”) charge equal to 6.75% of the aggregate amount of the Term Loan funded by Hercules.

As a condition to obtaining the Term Loan, the Company granted Hercules a security interest in substantially all of its assets and personal property not otherwise subject to existing or permitted liens. In addition, the Term Loan contains customary representations and warranties and events of default for a term loan facility of this size and type. Under the Term Loan, the Company also agreed to comply with certain customary affirmative and negative covenants that become effective upon the initial draw of the first tranche, including covenants to:

maintain $10.0 million unrestricted cash;

comply with certain requirements to provide Hercules with financial information and other rights to inspect the Company’s books and records and the collateral for the Term Loan;

refrain from incurring debt that is not expressly subordinated to the Term Loan; “Rule 144A-style” convertible notes in aggregate principal amount up to $250.0 million; and other permitted indebtedness;

refrain from granting (or permitting to exist) liens on the Company’s assets and properties, other than certain permitted liens, including in respect of its patents and other intellectual property;

refrain from making certain investments, other than permitted acquisitions and certain other permitted investments;

refrain from repurchasing the Company’s stock or paying dividends, subject to limited exceptions;

refrain from transferring any material portion of its assets; and

refrain from entering into any merger or consolidation in which the Company is not the surviving entity.

All of these covenants will not apply upon repayment of any borrowings under the Term Loan.

Certain of the baskets for permitted investments and other exceptions to the covenants described above have increased because the Company has raised more than $100.0 million in unrestricted net cash proceeds from one or more bona fide equity financings prior to March 31, 2022. (See Note 8 below for information relating to the Company’s equity financings in 2021 in this regard.) Further, the covenants in the Term Loan will not prohibit the Company from pursuing its strategy of entering into out-bound license agreements for lenzilumab that may be exclusive as to specific geographic regions outside the U.S., nor will the covenants prohibit the Company from entering into co-development or co-promotion or commercialization agreements relating to lenzilumab, so long as such agreements generally are negotiated on arm’s length and commercially reasonable terms.

While the Term Loan is outstanding, the lenders will have the right to convert a portion of the principal amount outstanding under the Term Loan (ranging from $5.0 million to $10.0 million in the aggregate) into shares of the Company’s common stock at a conversion price equal to $19.57 per share, subject to customary anti-dilution adjustments.

The following table summarizes the outstanding future payments of principal and interest associated with the Company’s Term Loan as of December 31, 20162021 (in thousands):

2022

$

2,218

2023

10,800

2024

13,671

2025

5,153

Total payments

31,842

Less amount representing interest

(5,155

)

Notes payable, gross

26,687

Less: Unamortized portion of EOT charge

(1,264

)

Less: Unamortized discount on notes payable

(159

)

Less: Unamortized debt issuance costs

(258

)

Long-term debt

25,006

Less current portion

0-

Long-term debt, net of current portion

$

25,006

Interest expense related to the Term Loan, for the year ended December 31, 2021 was $0.05approximately $2.3 million and $0.1 million, respectively.

6. Savant Arrangements
the effective interest rate was 9.0%.

Notes Payable to Vendors

On February 29,June 30, 2016, the Company enteredissued promissory notes in an aggregate principal amount of approximately $1.2 million to certain claimants in accordance with the Company’s Plan of Reorganization (the “Plan”) filed with the United States Bankruptcy Court for the District of Delaware (the “Bankruptcy Court”) (Case No. 15-12628 (LSS) (the “Bankruptcy Case”) which became effective June 30, 2016, at which time the Company emerged from its Chapter 11 bankruptcy proceedings. The notes were unsecured, accrued interest at 10% per annum and became due and payable in full, including principal and accrued interest on June 30, 2019. In July and August, 2019, following the receipt of proceeds from the 2019 Bridge Notes, the Company used approximately $0.5 million of the proceeds to retire a portion of these notes, including accrued interest. In June and July 2020, the Company used the proceeds from the Private Placement (as defined below) to repay the remaining outstanding principal including accrued and unpaid interest on these notes and the notes were extinguished. As of December 31, 2020, all the notes had been repaid.

Convertible Notes

2018 Convertible Notes

Commencing September 19, 2018, the Company delivered a series of convertible promissory notes (the “2018 Notes”) evidencing an aggregate of $2.5 million of loans made to the Company by six different lenders, including an affiliate of Black Horse Capital, L.P. (“BHC”), the Company’s controlling stockholder at the time. The 2018 Notes accrued interest at a rate of 7% per annum and, in general, were set to mature twenty-four months from the date the 2018 Notes were signed. The Company used the proceeds from the 2018 Notes for working capital.

The 2018 Notes were convertible into equity securities of the Company in three different scenarios, including if the Company sold its equity securities on or before the date of repayment of the 2018 Notes in any financing transaction that resulted in gross proceeds to the Company of less than $10.0 million (a “Non-Qualified Financing”). In connection with a binding letterNon-Qualified Financing, the noteholders were able to convert their remaining 2018 Notes into either (i) such equity securities as the noteholder would acquire if the principal and accrued but unpaid interest thereon (the “Conversion Amount”) were invested directly in the financing on the same terms and conditions as given to the financing investors in the Non-Qualified Financing, or (ii) common stock at a conversion price equal to $2.25 per share (subject to ratable adjustment for any stock split, stock dividend, stock combination or other recapitalization occurring subsequent to the date of the Notes).

The Company’s sales of shares pursuant to the ELOC Purchase Agreement with Lincoln Park constituted a Non-Qualified Financing. Commencing on April 2, 2020, the holders of the 2018 Notes notified the Company of their exercise of their conversion rights under the 2018 Notes. See “2019 Convertible Notes” for additional information regarding the conversion of 2018 Notes by the holders.

Interest expense recorded during the year ended December 31, 2020 related to the 2018 Notes was approximately $0.8 million.

2019 Convertible Notes

Commencing on April 23, 2019, the Company delivered a series of convertible promissory notes (the “2019 Notes” and together with the 2018 Notes, the “Convertible Notes”) evidencing an aggregate of $1.3 million of loans made to the Company. The 2019 Notes accrued interest at a rate of 7.5% per annum and, in general, were set to mature twenty-four months from the date the 2019 Notes were signed. The Company used the proceeds from the 2019 Notes for working capital.

The 2019 Notes were convertible into equity securities of the Company in four different scenarios, including if the Company sold its equity securities on or before the date of repayment of the 2019 Notes in any financing transaction that resulted in gross proceeds to the Company of less than $10.0 million (a “Non-Qualified Financing”). In connection with a Non-Qualified Financing, the noteholders were able to convert their remaining 2019 Notes into either (i) such equity securities as the noteholder would acquire if the Conversion Amount were invested directly in the financing on the same terms and conditions as given to the financing investors in the Non-Qualified Financing, or (ii) common stock at a conversion price equal to $6.25 per share (subject to ratable adjustment for any stock split, stock dividend, stock combination or other recapitalization occurring subsequent to the date of the 2019 Notes).

The Company’s sales of shares pursuant to the ELOC Purchase Agreement with LPC constituted a Non-Qualified Financing. Commencing on April 2, 2020, holders of the Convertible Notes, including Cheval, an affiliate of BHC, the Company’s controlling stockholder at the time, notified the Company of their exercise of their conversion rights under the Convertible Notes. Pursuant to the exemption from registration afforded by Section 3(a)(9) under the Securities Act, the Company issued an aggregate of 2,397,916 shares of its common stock upon the conversion of $4.3 million in aggregate principal and interest on the Convertible Notes that were converted, which obligations were retired. Of these, the Company issued 316,666 shares to Cheval. Dr. Dale Chappell, who was serving as the Company’s ex-officio chief scientific officer at the time and currently serves as its Chief Scientific Officer, controls BHC and reports beneficial ownership of all shares held by it and its affiliates, including Cheval. After giving effect to the shares issued upon such conversions, no convertible notes issued in 2018 or 2019 were outstanding as of December 31, 2020.

Interest expense related to the 2019 Notes, recorded during the year ended December 31, 2020, was approximately $0.2 million.

The Advance Notes, the 2018 Notes and the 2019 Notes had an optional voluntary conversion feature in which the holder could convert the notes in the Company’s common stock at maturity at a conversion rate of $2.25 per share for the Advance Notes and the 2018 Notes and at a conversion rate of $6.25 for the 2019 Notes. The intrinsic value of this beneficial conversion feature was $1.8 million upon the issuance of the Advance Notes, the 2018 Notes and the 2019 Notes and was recorded as additional paid-in capital and as a debt discount which was accreted to interest expense over the term of the Advance Notes, the 2018 Notes and the 2019 Notes. Interest expense included debt discount amortization of $0.8 million for the year ended December 31, 2020.

The Company evaluated the embedded features within the Advance Notes, the 2018 Notes and the 2019 Notes to determine if the embedded features are required to be bifurcated and recognized as derivative instruments. The Company determined that the Advance Notes, the 2018 Notes and the 2019 Notes contain contingent beneficial conversion features (“CBCF”) that allow or require the holder to convert the Advance Notes, the 2018 Notes and the 2019 Notes, as applicable, to Company common stock at a conversion rate of $2.25 per share for the Advance Notes and the 2018 Notes and $6.25 for the 2019 Notes, but did not contain embedded features requiring bifurcation and recognition as derivative instruments. Upon the occurrence of a CBCF that results in conversion of the Advance Notes, the 2018 Notes or the 2019 Notes to Company common stock, the remaining unamortized discount will be charged to interest expense. Upon conversion of the Advance Notes on May 30, 2019, the remaining unamortized discount was charged to interest expense. Upon the conversion of the Convertible Notes in April 2020, the remaining related unamortized discount was charged to interest expense.

2020 Convertible Redeemable Notes

On March 13, 2020 and March 19, 2020 (the “Issuance Dates”), the Company delivered two convertible redeemable promissory notes (the “2020 Notes”) evidencing loans with an aggregate principal amount of $518,333 made to the Company.

The 2020 Notes accrued interest at a rate of 7.0% per annum and were set to mature on March 13, 2021 and March 19, 2021, respectively. The 2020 Notes contained an original issue discount of $33,000 and $18,833, respectively. The Company used the proceeds from the 2020 Notes for working capital.

The notes could be redeemed by the Company at any time before the 270th day following issuance, at a redemption price equal to the principal and accrued but unpaid interest on the notes to the date of redemption, plus a premium that increases on day 61 and day 121 from the issuance date. Accordingly, the notes were repaid in June 2020 with proceeds from the Private Placement, and the notes were extinguished.

The Company evaluated the embedded features within the 2020 Notes and determined that the embedded features are required to be bifurcated and recognized as stand-alone derivative instruments. The variable-share settlement features within the 2020 Notes qualify as redemption features and meet the net settlement criterion for qualification as a stand-alone derivative. In determining the fair value of the bifurcated derivative, the Company evaluated the likelihood of conversion of the 2020 Notes to Company stock. As the Company believed it would have adequate funding prior to the six-month anniversary of the 2020 Notes, the first conversion option for the holders of the 2020 Notes, and it had the intent to either begin making amortizing payments or to pay off the 2020 Notes in their entirety prior to that date, the fair value was determined to be $0. The original issue discount was accreted to interest expense and the remaining balance was charged to interest expense upon payoff.

Interest expense related to the 2020 Notes, recorded during the year ended December 31, 2020, was approximately $0.2 million. Interest expense includes the original issue discount amortization of approximately $0.1 million for the year ended December 31, 2020.

Bridge Notes

On June 28, 2019, the Company issued three short-term, secured bridge notes (the “LOI”“June Bridge Notes”) evidencing an aggregate of $1.7 million of loans made to the Company by three parties: Cheval, an affiliate of BHC, the Company’s controlling stockholder at the time, lent $0.75 million; Nomis Bay LTD, the Company’s second largest stockholder, lent $0.75 million; and Dr. Cameron Durrant, the Company’s Chief Executive Officer and Chairman of the Board of Directors (the “Board”), lent $0.2 million. The proceeds from the June Bridge Notes were used to satisfy a portion of the unsecured obligations incurred in connection with the Company’s emergence from bankruptcy in 2016 and for working capital and general corporate purposes.

The June Bridge Notes accrued interest at a rate of 7.0% per annum and after giving effect to multiple extensions, were set to mature on December 31, 2020. The June Bridge Notes could become due and payable at such earlier time as the Company raised more than $3.0 million in a bona fide financing transaction or upon a change in control. Accordingly, the June Bridge Notes were repaid in June 2020 with proceeds from the Private Placement, and the June Bridge Notes were extinguished.

On November 12, 2019, the Company issued two short-term, secured bridge notes (the “November Bridge Notes” and together with the June Bridge Notes, the “2019 Bridge Notes”) evidencing an aggregate of $0.35 million of loans made to the Company by two parties: Cheval, an affiliate of BHC, the Company’s controlling stockholder at the time, lent $0.25 million; and Dr. Cameron Durrant, the Company’s Chief Executive Officer and Chairman of its Board, lent $0.1 million. The proceeds from the November Bridge Notes were used for working capital and general corporate purposes.

The November Bridge Notes ranked on par with the June Bridge Notes and possessed other terms and conditions substantially consistent with those notes. The November Bridge Notes accrued interest at a rate of 7.0% per annum and after giving effect to multiple extensions, were set to mature on December 31, 2020. The November Bridge Notes could become due and payable at such earlier time as the Company raised more than $3.0 million in a bona fide financing transaction or upon a change in control. Accordingly, the November Bridge Notes were repaid in June 2020 with proceeds from the Private Placement.

In April 2020, the Company issued two short-term, secured bridge notes (the “April Bridge Notes” and together with the June Bridge Notes and the November Bridge Notes, the “Bridge Notes”) evidencing an aggregate of $0.35 million of loans made to the Company: Cheval, an affiliate of BHC, the Company’s controlling stockholder at the time, loaned $0.1 million, and Nomis Bay, the Company’s second largest stockholder, loaned $0.25 million. The proceeds from the April Bridge Notes were used for working capital and general corporate purposes.

The April Bridge Notes ranked on par with the June Bridge Notes and the November Bridge Notes and possessed other terms and conditions substantially consistent with them. The notes accrued interest at a rate of 7.0% per annum and were set to mature on December 31, 2020. The April Bridge Notes could become due and payable at such earlier time as the Company raised more than $10.0 million in a bona fide financing transaction or upon a change in control. Accordingly, these April Bridge Notes were repaid in June 2020 with proceeds from the Private Placement, and these bridge notes were extinguished.

The Bridge Notes were secured by a lien on substantially all the Company’s assets, which liens have been released.

Interest expense related to the Bridge Notes, recorded during the year ended December 31, 2020, was approximately $0.1 million.

6. Warrants to Purchase Common Stock

On June 19, 2013, the Company issued a warrant to purchase up to an aggregate of 1,238 shares of common stock at an exercise price of $484.80 per share. The warrant expires on the tenth anniversary of its issuance date. As of December 31, 2021, these warrants were fully vested and unexercised.

On December 4, 2015, the Company issued a warrant to purchase up to an aggregate of 25,000 shares of common stock at an exercise price of $146.60 per share. The warrant expired on December 4, 2020.

On June 30, 2016, the Company and Savant Neglected Diseases, LLC (“Savant”).  The LOI provided that the Company would acquire certain worldwide rights relating to benznidazole (the “Compound”) from Savant.   Under the LOI, the Company made a non-refundable deposit to Savant of $0.5 million, which was credited towards the Initial Payment (as defined below), and agreed to make monthly payments to Savant equal to $0.1 million for development services performed by Savant relating to the Compound.

The LOI provided that in consideration for the assets to be acquired, the Company would provide consideration to Savant, including:
·$3.0 million (the “Initial Payment”) payable as soon as practicable but in no event later than the Company emerging from its Chapter 11 bankruptcy pursuant to a plan of reorganization (the “Bankruptcy Exit”);
·a five-year warrant from the date of the Bankruptcy Exit to purchase up to 200,000 shares of  common stock at a per share price of $2.25, exercisable for 25% of the shares immediately and exercisable for the remaining shares upon reaching certain milestones related to regulatory approval of the Compound; and
·certain additional payments to be further specified in the definitive agreements.
On the Effective Date, as authorized by the Plan and the Confirmation Order, the Company and Savant entered into an Agreement for the Manufacture, Development and Commercialization of Benznidazole for Human Use (the “MDC Agreement”), pursuant to which the Company acquired certain worldwide rights relating to the Compound. The MDC Agreement consummates the transactions contemplated by the LOI.
Under the terms ofbenznidazole. In connection with the MDC Agreement, the Company acquired certain regulatory and non-intellectual property assets relating to the Compound and any product containing the Compound and an exclusive license of certain intellectual property assets related to the Compound. Savant retained the right to use the licensed intellectual property for veterinary uses. The MDC Agreement provides that the Company and Savant will jointly conduct research and development activities with respect to the Compound, while the Company will be solely responsible for commercializing the Compound. 
As required by the MDC Agreement,also on the Effective Date, the Company made payments to Savant totaling $2.7 million, consisting of the remaining portion of the Initial Payment less the deposit in the amount of $2.5 million, an initial monthly Joint Development Program Cost payment of $0.1 million, and reimbursement of Savant’s legal fees capped at $0.1 million. The MDC Agreement provides for milestone payments, including payments related to U.S. and foreign regulatory submissions of up to $21 million and certain other contingent payments.  Additionally, the Company will pay Savant royalties on any net sales of the Compound, which royalty would increase if a PRV is granted subsequent to regulatory approval of the Compound.  The MDC Agreement also provides that Savant is entitled to a portion of the amount the Company receives upon the sale, if any, of a PRV relating to the Compound.
In addition, on the Effective Date the Company and Savant also entered into a Security Agreement (the “Security Agreement”), pursuant to which the Company granted Savant a continuing senior security interest in the assets and rights acquired by the Company pursuant to the MDC Agreement and certain future assets developed from those acquired assets.
On the Effective Date,June 30, 2016, the Company issued to Savant a five yearfive-year warrant (the “Warrant”“Savant Warrant”) to purchase 200,00040,000 shares of the Company’s Common Stock, at an exercise price of $2.25$11.25 per share, subject to adjustment. The Savant Warrant iswas exercisable for 25% of the shares immediately and exercisable for the remaining shares upon reaching certain regulatory related milestones. In addition, pursuant to the MDC Agreement, the Company hashad granted Savant certain “piggyback” registration rights for the shares issuable under the Warrant (See Note 8 “Warrants to Purchase Common Stock”).
The Company will continue to reevaluate the performance conditions and expected vesting of the Warrant onSavant Warrant. On June 30, 2020, Savant exercised 20,000 warrants in a quarterly basis until all performance conditions have been met.
Before a compound receives regulatory approval, the Company records upfront and milestone payments made to third parties under licensing arrangements as expense. Upfront payments are recorded when incurred and milestone payments are recorded when the specific milestone has been achieved.
The Company determined that the acquisition of the Compound should be treated as a purchase of in-process research and development. Accordingly, during the year ended December 31, 2016, the Company recorded $3.3 million, which includes an additional $0.3 million payment madecashless exercise resulting in 201510,909 shares being issued to Savant as Research and development expense in the accompanying Condensed Consolidated StatementJuly 2020. The remaining unvested warrants for an aggregate of Operations and Comprehensive Loss.  In addition, during the year ended December 31, 2016, the Company recorded $0.3 millionup to 20,000 shares expired on June 30, 2021.

On April 22, 2020, in connection with the Joint Development Program and recorded $0.1 million in legal fee reimbursement as Research and development expense in the accompanying Condensed Consolidated Statement of Operations and Comprehensive Loss.

On May 26, 2017, the Company submitted its benznidazole IND to FDA which became effective on June 26, 2017.  The Company recorded expense of $1.0 million during the year ended December 31, 2017 as Research and development expense related to the milestone achievement associated with the IND being declared effective.
On July 10, 2017 FDA notified the Company that it granted Orphan Drug Designation to benznidazole for the treatment of Chagas disease. The Company recorded expense of $1.0 million during the year ended December 31, 2017 as Research and development expense related to the milestone achievement associated with Orphan Drug Designation.
In July 2017, the Company commenced litigation against Savant alleging that Savant breached the MDC Agreement and seeking a declaratory judgement.  Savant has asserted counterclaims for breaches of contract under the MDC Agreement and the Security Agreement.  The dispute primarily concerns the Company’s right under the  MDC Agreement to offset certain costs incurred by the Company in excess of the agreed upon budget  against payments due Savant.  The aggregate cost overages as of December 31, 2017 that the Company asserts are Savant’s responsibility total approximately $3.4 million, net of a $0.5 million deductible.  The Company asserts that it is entitled to offset $2.0 million in milestone payments due Savant against the cost overages, such that as of June 30, 2017, Savant owed the Company approximately $1.4 million. As of December 31, 2017, Savant owed the Company approximately $2.1 million in cost overages. Such cost overages have been charged to Research and development expense as incurred.  Recovery of such cost overages, if any, will be recorded as a reduction of Research and development expense in the period received. See Part I, Item 3 of this Form 10-K for more information about this pending matter.
7.  Debt
Notes Payable to Vendors

On June 30, 2016,investor relation services, the Company issued promissory notes intwo warrants to purchase up to an aggregate principal amount of approximately $1.2 million to certain claimants in accordance with the Plan.  The notes are unsecured, bear interest at 10% per annum and are due and payable in full, including principal and accrued interest on June 30, 2019.  As of December 31, 2017 and 2016, the Company has accrued $0.2 million and $0.1 million in interest related to these promissory notes, respectively.
Term Loans

Term Loans consisted of the following at December 31, 2017 and 2016:

As of December 31, 2017               
  
Original
Principal
Amount
  
Accrued
Interest
  
Loan
Balance
  Fees  
Balance
Due
 
December 2016 Loan $3,315  $324  $3,639  $153  $3,792 
March 2017 Loan  5,978   452   6,430   275   6,705 
July 2017 Loan  5,435   249   5,684   250   5,934 
Bridge Loan  1,500   6   1,506   -   1,506 
Claims Advances Loan  80   1   81   -   81 
Totals $16,308  $1,032  $17,340  $678  $18,018 
                     
As of December 31, 2016                    
  
Original
Principal
Amount
  
Accrued
Interest
  
Loan
Balance
  
Unamortized
Fees
  
Balance
Due
 
December 2016 Loan $3,315  $8  $3,323  $(307) $3,016 

On December 21, 2016, the Company entered into a Credit and Security Agreement, as amended on March 21, 2017 and on July 8, 2017 (as amended, the “Credit Agreement”), with BHCMF as administrative agent and lender, and lenders BHC, Cheval and Nomis Bay (collectively the “Lenders”).  The Credit Agreement provided for the December 2016 Loan, the March 2017 Loan and the July 2017 Loan (the “Term Loans”).

In accordance with the terms of the Credit Agreement, the Company used the proceeds of the Credit Facility for general working capital, the payment of certain fees and expenses owed to BHCMF and the Lenders and other costs incurred in the ordinary course of business. Dr. Chappell, one of the Company’s former directors, is an affiliate of each of BHCMF, BHC and Cheval.

The Term Loans bore interest at 9.00% and are subject to certain customary representations, warranties and covenants, as set forth in the Credit Agreement.

 On December 1, 2017 the Term Loans matured and began bearing interest at the default rate of 14.00%.  The Company’s obligations under the Credit Agreement are secured by a first priority interest in all of the Company’s real and personal property, subject only to certain carve outs and permitted liens, as set forth in the agreement.

On December 21, 2017, the Company obtained a $1.5 million bridge loan (the "Bridge Loan") from Cheval. The Bridge Loan bears interest at 14.00% and is treated as a secured loan under the Credit Agreement.

On February 27, 2018 the Term Loans and the Bridge Loans along with all related fees and accrued interest, were extinguished in connection with the Restructuring Transactions described in Note 10.

8. Warrants to Purchase Common Stock
On June 30, 2016, in connection with the benznidazole acquisition the Company issued to Savant a five year warrant (the “Savant Warrant”) to purchase 200,0008,000 shares of the Company’s Common Stock,common stock at an exercise price of $2.25$0.05 per share, subjectshare. The warrants were to adjustment. The Savant Warrant is exercisable for 25%vest upon either a change of the shares immediately and exercisable for the remaining shares upon reaching certain regulatory related milestones. In addition, pursuant to the MDC Agreement, the Company has granted Savant certain “piggyback” registration rights for the shares issuable under the Warrant.
The Company determined the initial fair value of the Savant Warrant to be approximately $0.7 millioncontrol, as of June 30, 2016.  The Company reevaluated the performance conditions and expected vesting of the Savant Warrant as of September 30 and December 31, 2016 and recorded total expense of approximately $0.4 million during the year ended December 31, 2016, which is included in Research and development expensesdefined in the accompanying Consolidated Statement of Operations and Comprehensive Loss. The Company reevaluated the performance conditions and expected vesting of the Warrant quarterly during 2017 and recorded a reduction of expense of approximately $0.1 million during the year ended December 31, 2017.  The expense reduction was duewarrant agreement, an uplisting to a declinenational securities exchange, or eight years from the issuance date and were to expire two years after full vesting. On September 18, 2020, the Company’s common stock commenced trading on the Nasdaq Capital Market and on the same day the warrants became vested and were exercised for proceeds of $400.

On May 20, 2020, in the fair value, which reduction is included in Research and development expenses in the accompanying Condensed Consolidated Statement of Operations and Comprehensive Loss. Specifically, as a result of the FDA granting accelerated and conditional approval of a benznidazole therapy manufactured by Chemo for the treatment of Chagas disease and awarding Chemo a neglected tropical disease PRV, the Company re-evaluated the final two vesting milestones and concluded that the probability of achievement of these milestones had decreased to 0%.

The Company will continue to reevaluate the performance conditions and expected vesting of the Savant Warrant on a quarterly basis until all performance conditions have been met.

On December 1, 2016connection with investor relation services, the Company issued a warrant to purchase up to an aggregate of 25,0004,000 shares of common stock at an exercise price of $4.00$0.05 per share. The warrants were to vest upon either a change of control, as defined in the warrant expiresagreement, an uplisting to a national securities exchange, or eight years from the issuance date and were to expire two years after full vesting. On September 18, 2020, the Company’s common stock commenced trading on the one year anniversaryNasdaq Capital Market and on the same day the warrants became vested and were exercised for proceeds of its issuance and had a fair value of approximately $0.04 million which is included$200.

On May 20, 2020, in General and administrative expenses in the accompanying Consolidated Statements of Operations and Comprehensive Loss. The warrant provided that ifconnection with manufacturing consulting services, the Company declaredissued a dividend, or made any other distributionwarrant to purchase up to an aggregate of its assets, to holders of common stock, then the warrant holder would be entitled to participate in such dividend or distribution to the same extent that the holder would have participated had it held the number of30,000 shares of common stock acquirableat an exercise price of $4.30 per share. The warrants were fully vested on the date of issue and expire ten years from the issuance date. These warrants remained unexercised as of December 31, 2021.

On September 14, 2020, in connection with investor relation services, the Company issued three warrants to purchase up to an aggregate of 200,000 shares of common stock at an exercise price of $0.05 per share. The warrants were to vest upon complete exerciseeither a change of control, as defined in the warrant. The warrant was issuedagreement, an uplisting to a national securities exchange, or eight years from the issuance date and were to expire two years after full vesting. On September 18, 2020, the Company’s common stock commenced trading on the Nasdaq Capital Market and on the same day the warrants became vested and were exercised for proceeds of $10,000.

7. Commitments and Contingencies

Eversana Agreement

On January 10, 2021, the Company announced that it had entered into a master services agreement (the “Eversana Agreement”) with Eversana Life Science Services, LLC (“Eversana”) pursuant to which Eversana will provide the Company multiple services from its integrated commercial platform in preparation for the potential commercialization of lenzilumab.

Under the Eversana Agreement, Eversana will provide the Company with services in connection with the engagement agreementpotential launch of lenzilumab. Eversana services during 2021 have comprised marketing, market access, consulting, field solutions, field operations, health economics and medical affairs. Additional services may be negotiated by the parties and set forth in statements of work delivered in accordance with the Eversana Agreement.

On September 21, 2021, the Company notified Eversana that due to the EUA status in the U.S., it was terminating the initial statement of work related to commercialization support of lenzilumab for the treatment of COVID-19 in the United States. Eversana is disputing the termination notice and has requested payment of approximately $4.0 million it has asserted the Company owes for services rendered from April 1, 2021 to September 30, 2021. The Company has disputed this assertion and is working to resolve this dispute.

The Eversana Agreement provides for a one-year term and will renew for subsequent one-year terms unless either party provides a notice of non-renewal. After the first year, the Company may terminate the Eversana Agreement upon advance written notice to Eversana. The Eversana Agreement contains customary provisions allowing either party to terminate the Eversana Agreement as a result of certain investor relations activities.  changes in law and material breaches and certain insolvency events by or relating to the other party.

The warrantEversana Agreement imposes customary mutual obligations on the parties to protect and not disclose the confidential information and intellectual property of the other, and contains insurance, non-solicitation, indemnification and limitation of liability provisions customary for service contracts of this type.

Manufacturing Agreements

The Company has entered into agreements with several CMOs to manufacture bulk drug substance (“BDS”) and fill/finish/drug product (“DP”) for lenzilumab for a potential launch of lenzilumab in anticipation of an EUA or CMA in 2021. The Company has also entered into agreements for packaging of the drug. These agreements represent large commitments, including upfront amounts prior to commencement of manufacturing and progress payments through the course of the manufacturing process and include payments for technology transfer. Since September 9, 2021, the Company has amended, and in some cases canceled, certain of these agreements, some of which were contingent on EUA, in an effort to reduce its future spending on lenzilumab production until and if authorization is received in the UK, EU, or U.S. These changes may limit future production of lenzilumab but because most of the Company’s manufacturing agreements required payment of upfront fees upon execution and payments against performance of the services to be provided, often over a lengthy performance period, the changes are expected to decrease the Company’s manufacturing costs beginning in 2022. In addition, certain of the Company’s CMOs have been unsuccessful in their efforts to manufacture some batches of lenzilumab to the Company’s specifications for various reasons. The Company is working with these CMOs to determine if batches of BDS manufactured by them will be usable in the future or, if not, whether other financial recompense will be offered to the Company. As of December 31, 2021, the Company estimates that its commitments remaining to be incurred under these agreements are approximately $63.4 million for 2022, $4.6 million for 2023, and $7.4 million thereafter. Certain of these commitments and amounts accrued at year-end are in dispute and the Company intends to defer these payments, negotiate lower amounts or seek legal recourse for the amounts in question.

Operating Leases

During a portion of 2020, the Company sub-leased office space under a short-term lease in Burlingame, California. The sub-lease initial term expired on DecemberMarch 31, 2020 and was renewed until September 1, 2017.


9. Commitments and Contingencies
Operating Leases
In December 2013,2020. On September 1, 2020, the Company entered into a one-year lease agreement for a facilitysmall office in South San Francisco, California. The lease commencedthe same building in July 2014 and was set to expire in 2019. Per the terms of the lease agreement, the Company had the option to terminate the lease after 36 months, subject to additional fees and expenses. In March 2016,Burlingame, California for $1,200 per month which expired on August 31, 2021. On September 1, 2021, the Company entered into a termination agreement (the “Lease Termination Agreement”) related to thenew one-year lease of this facility. The Lease Termination Agreement, approved by order of the Bankruptcy Court issued March 15, 2016, waived all damages related to early termination of the lease, relieved the Company of March rental expenses and set an effective termination date of March 31, 2016.
Concurrent with the termination of this lease, the Company entered into a lease agreementone-month free rent for a new facilitysmall office in Brisbane, California. The new lease commencedthe same building in April 2016 and was to expire on March 31, 2017. On February 16, 2017, the Company amended the lease to extend the term of the leaseBurlingame, California for an additional period of eighteen months such that the lease$1,200 per month which will expire on September 30, 2018.
As2022. Management determined the lease term for each of December 31, 2017, future minimum lease payments duethe subleases and leases to be less than 12 months, including renewals, and therefore did not record a right-of-use asset and corresponding liability under the Company’sshort-term lease are as follows:
Year Amount 
2018 $202 
Rent expense was $0.3 millionrecognition exemption.

Lease costs for each of the years ended December 31, 20172021 and 2020 totaled approximately $14 thousand and $3 thousand, respectively, and are included in the Consolidated Statements of Operations. As of December 31, 2016.

2021, the Company had future minimum lease payments of approximately $11 thousand.

Indemnification

The Company has certain agreements with service providers with which it does business that contain indemnification provisions pursuant to which the Company typically agrees to indemnify the party against certain types of third‑partythird-party claims. The Company accrues for known indemnification issues when a loss is probable and can be reasonably estimated. The Company would also accrue for estimated incurred but unidentified indemnification issues based on historical activity. As the Company has not incurred any indemnification losses to date, there were no accruals for or expenses related to indemnification issues for any period presented.

8. Stockholders’ Equity

Reverse Stock Split

Effective as of 4:30 p.m. Eastern Time on September 11, 2020 (the “Effective Time”), the Company amended its charter to effect a reverse stock split at a ratio of 1-for-5 (the “Split Ratio”). No fractional shares were issued in connection with the reverse stock split. Stockholders of record otherwise entitled to receive fractional shares of common stock received cash (without interest or deduction) in lieu of such fractional share interests.

The reverse stock split reduced the total number of shares of the Company’s common stock outstanding as of the Effective Time from approximately 210.9 million shares to approximately 42.2 million shares. The par value per share and other terms of the Company’s common stock were not affected by the reverse stock split, and the number of authorized shares of the Company’s common stock remained at 225,000,000.

The reverse stock split resulted in a proportionate adjustment in the number of shares reserved for issuance under the 2020 Equity Plan, such that a total of 7,000,000 shares of the Company’s common stock were reserved for issuance under the 2020 Equity Plan following the Effective Time. In addition, proportionate adjustments were made to the number of shares covered by, and the exercise price applicable to, each outstanding stock option award under the 2012 Equity Plan and outstanding warrants issued by the Company, in each case to give effect to the Split Ratio and the reverse stock split.

10. Stockholders’ Equity
Restructuring Transactions

The reverse stock split was accounted for retroactively and is reflected in the Company’s common stock, stock option and warrant activity as of and during the year ended December 31, 2020. Unless stated otherwise, all share data and per share data in this Annual Report on Form 10-K have been adjusted, as appropriate, to reflect the reverse stock split.

2020 Private Placement

On December 21, 2017,June 1, 2020, the Company entered into a Securities Purchase and Loan Satisfaction Agreementsecurities purchase agreement (the “Purchase Agreement”) with certain accredited investors (the “Investors”) to complete a private placement of the Company’s common stock (the “Private Placement”). The closing of the Private Placement occurred on June 2, 2020 (the “Closing Date”). At the closing, the Company issued and sold 16,505,743 shares of its common stock (the “Shares”) at a Forbearance and Loan Modification Agreement (the “Forbearance Agreement” and, togetherpurchase price of $4.35 per share, for aggregate gross proceeds of approximately $71.8 million. The Company used a portion of the proceeds to retire certain indebtedness, as further described in Note 5. See Note 11 for information regarding two complaints filed against the Company in connection with the Purchase Agreement,Private Placement.

On the “Agreements”), each withClosing Date, the Lenders. The Agreements provide forCompany and the Investors also entered into a series of transactionsregistration rights agreement (the “Restructuring Transactions”“Registration Rights Agreement”) pursuant to which at the closingCompany agreed to prepare and file a registration statement (the “Resale Registration Statement”) for the resale of the Restructuring Transactions (the “Transaction Closing”),Shares with the Securities and Exchange Commission.

Subject to certain limitations and an overall cap, the Company will: (i) in exchange formay be required to pay liquidated damages to the satisfaction and extinguishmentinvestors at a rate of 2% of the entire balanceinvested capital for each occurrence (and continuation for 30 consecutive days thereafter) of the Term Loans, (a) issue to the Lenders an aggregate of 59,786,848 shares of Common Stock (the “New Lender Shares”), and (b) transfer and assign to an affiliate of Nomis Bay (the “JV Entity”), all of the assets ofa breach by the Company related to benznidazole (the “Benz Assets”), the Company’s former drug candidate; and (ii) issue to Cheval an aggregate of 32,028,669 sharescertain of Common Stock (the “New Black Horse Shares” and, collectively with the New Lender Shares, the “New Common Shares”) for total consideration of $3.0 million.


Issuance of the New Lender Shares

Under the Purchase Agreement, at the Transaction Closing, the Company will issue to the Lenders the New Lender Shares, of which 29,893,424 shares of Common Stock will be issued to the Black Horse Entities and 29,893,424 shares of Common Stock will be issued to Nomis Bay. The issuance of the New Lender Shares to the Lenders and the assignment of the Benz Assets to the JV Entity will result in the satisfaction and extinguishment of the Company’s outstandingits obligations under the CreditRegistration Rights Agreement.

The Purchase Agreement andalso required that the cancellationCompany use its commercially reasonable efforts to achieve a listing of the Term Loans, other thanCommon Stock on a national securities exchange, subject to certain limitations set forth in the Bridge Loan described below. At the Transaction Closing,Purchase Agreement. On July 6, 2020, the Company will no longer be liableapplied to have its common stock approved for repayment of its outstanding obligationslisting on the Nasdaq Capital Market. On September 18, 2020, the Company’s common stock commenced trading on the Nasdaq Capital Market under the Credit Agreement,symbol “HGEN.”

2020 Underwritten Public Offering

On September 17, 2020, the Company entered into an underwriting agreement (the “Underwriting Agreement”) with J.P. Morgan Securities LLC and all security interestsJefferies LLC, as representatives of the Lenders in the Company’s assets will be released.


Transfer of the Benz Assets; Claims Advances

Under the Purchase Agreement, at the Transaction Closing, the Company will transfer and assign the Benz Assets to the JV Entity. The Company also will agree to retain, but provide the JV Entity the benefits of, any Benz Assets which are not permitted to be assigned absent receipt of third-party consents. The JV Entity (at the election of Nomis Bay, which will control the JV Entity) will have 90 days from the date of the Rule 2004 Discovery Order granting the Rule 2004 Discovery Motion (each as defined below), or 180 days from the Transaction Closing if a Rule 2004 Discovery Order is either entered denying the Rule 2004 Discovery Motion or has not been entered on or before the Transaction Closing, to decide, in its sole discretion, whether to elect to keep the Benz Assets (a “Positive Election”). The Benz Assets will revert back to the Company in the event that the JV Entity (at the election of Nomis Bay) elects not to make a Positive Election.

In connection with the transfer of the Benz Assets to the JV Entity, Nomis Bay will pay certain amounts incurred by the Company and the JV Entity after December 21, 2017 in investigating certain causes of action and claims related to orseveral underwriters, in connection with the Benz Assets (the “Claims”), including the right to pursue causespublic offering of action and claims related to potential misappropriation8,000,000 of the Company’s trade secrets by a competitor in connection with such competitor’s submissions to the U.S. Food and Drug Administration. In addition, if the JV Entity (at the electionshares of Nomis Bay) makes a Positive Election: (i) Nomis Bay will assume certain legal fees and expenses owed by the Company to its litigation counsel, and (ii) the Company will be entitled to receive 30% of any amounts realized from the successful prosecution of the Claims or otherwise from the Benz Assets, after Nomis Bay is reimbursed for certain expenses in connection with funding the Claims and after giving effect to any payments that the JV Entity may be required to make to any third parties.

Nomis Bay will have full control, in its sole discretion, over the management of the JV Entity, any development of or realization on the Benz Assets and the prosecution of the Claims. In addition, the Company has agreed that, as soon as practicable after entering into the Agreements, the Company will make appropriate motion to the Bankruptcy Court currently responsible for the Company’s pending Chapter 11 proceeding dating from December 2015 (the “Bankruptcy Court”) to permit discovery in relation to the Claims pursuant to Rule 2004 of the Federal Rules of Bankruptcy Procedure (the “Rule 2004 Discovery Motion”), and commence such discovery promptly after entry of an order of the Bankruptcy Court authorizing such discovery (the “Rule 2004 Discovery Order”). Nomis Bay has agreed to fund these litigation efforts from the date of the Agreements to the Transaction Closing or termination of the Restructuring Transactions as secured loans under the Credit Agreement (“Claims Advances”).common stock. Pursuant to the ForbearanceUnderwriting Agreement, the Claims Advances will have priority overCompany granted the Bridge Loan (as defined below) and all other Term Loansunderwriters a 30-day option to purchase an additional 1,200,000 shares of common stock, which option was exercised in full by the underwriters on September 18, 2020.

As a result of the pricing of the public offering, the Company’s common stock commenced trading on the Nasdaq Capital Market under the symbol “HGEN.”

The aggregate gross proceeds from the sale of the full 9,200,000 shares in the Benz Assets. At the Transaction Closing, the entire amount of the Claims Advances will be deemed satisfied and extinguished along with the other Term Loans, and all security interests of Nomis Bay in the Benz Assets will be released.

Issuance of the New Black Horse Shares; Bridge Loan

Under the Purchase Agreement, at the Transaction Closing, the Company will also issue to Cheval the New Black Horse Shares for total consideration of $3.0 million (including extinguishment of the Bridge Loan described below).offering were approximately $78.2 million. The Company plansexpects to use the proceeds from the issuance of the New Black Horse Sharesoffering to support its manufacturing, production and commercial preparation activities relating to lenzilumab as a potential therapy for COVID-19 patients and for working capital and other costs incurred in the ordinary course of business, including additional fundraising. general corporate purposes.

2021 Underwritten Public Offering

On December 21, 2017, concurrentlyMarch 30, 2021, we entered into an underwriting agreement (the “Underwriting Agreement”) with entering into the Agreements, Cheval agreed to make a bridge loan to the Company of $1.5 million (the “Bridge Loan”). Pursuant to the Forbearance Agreement, until the Transaction Closing, the Bridge Loan will be treatedJefferies LLC, Credit Suisse Securities (USA) LLC and Cantor, as a secured loan under the Credit Agreement. The Bridge Loan will have priority over the Claims Advances and the Term Loans in certainrepresentatives of the Company’s non-benznidazole related assets, including lenzilumab and ifabotuzumab. Atseveral underwriters, in connection with the Transaction Closing, the entire amountpublic offering of the Bridge Loan will be credited to Cheval’s $3.0 million payment obligation and will be converted into New Black Horse Shares and all security interests of Cheval in the non-benznidazole assets will be released.


Bankruptcy Related Common Stock Issuances
As more fully described in Note 2, on June 30, 2016, pursuant to the SPA and in repayment of its obligations under the Credit Agreement, the Company issued an aggregate of 9,497,5155,000,000 shares of itsour common stockstock. In addition, we granted the underwriters a 30-day option to the DIP Lenders.

As more fully described in Note 2, on June 30, 2016, the Company issued 327,608purchase an additional 750,000 shares of our common stock. The initial offering closed on April 5, 2021. On May 3, 2021, we closed on the sale of an additional 427,017 shares of our common stock to the plaintiffs in litigation related to the Company’s 2015 private financing transaction in accordance with the settlement stipulation.

As more fully described in Note 2, on June 30, 2016, the Company issued 3,750 shares of common stock to a former director in satisfaction of claims against the Company.

As more fully described in Note 2, on June 30, 2016, the Company issued 300,000 shares of common stock for issuance to the plaintiffs in a class action litigation related to the events surrounding the Company’s former Chairman and Chief Executive Officer.

Other Common Stock Transactions
In June 2014, the Company amended and restated its certificate of incorporation to increase the authorized common stock to 85,000,000 shares.  In February 2018, the Company amended and restated its certificate of incorporation to increase the authorized common stock to 225,000,000 shares and authorize 25,000,000 shares of preferred stock.
On November 7, 2016, the Company issued 25,000 shares of restricted common stock to an investor relations consultant.  The fair valueexercise of the shares issued based onunderwriters’ 30-day option. The aggregate gross proceeds from the closing price on November 7, 2016 was $0.1 million and was recorded as stock based compensationsale of the 5,427,017 shares in the attached Consolidated Statements of Operations and Comprehensive Loss for the year ended December 31, 2016.

On November 15, 2016, the Company issued 40,000 shares of restricted common stock to a financial advisor in return for services.  The fair valueoffering, inclusive of the additional shares issued based onpurchased by the closing price on November 15, 2016 was $0.1 millionunderwriters, were approximately $100.4 million. The net proceeds from this offering, after deducting underwriting discounts and was recorded as stock based compensation in the attached Consolidated Statements of Operations and Comprehensive Loss for the year ended December 31, 2016.  In November 2017, the financial advisor returned the shares for no consideration.
offering costs, were approximately $94.2 million.

The Company hadhas reserved the following shares of common stock for issuance as of December 31, 2017:

2021:

Warrants to purchase common stock

331,193

31,238

Options:

Outstanding under the 2020 Equity Incentive Plan

1,962,489

Outstanding under the 2012 Equity Incentive Plan

2,439,183

2,467,417

Outstanding under the 2001 Equity Incentive Plan9,200

Available for future grants under the 20122020 Equity Incentive Plan

1,367,566

5,004,035

Total common stock reserved for future issuance

4,147,142

9,465,179

Committed

Controlled Equity Financing Facility


Offering

On August 24, 2017,December 31, 2020, the Company entered into a Common Stock Purchasethe Sales Agreement dated as of August 23, 2017 (the “ELOC Purchase Agreement”), with Aperture Healthcare Ventures Ltd. (“Aperture”) pursuant toCantor, under which the Company may, subject to certain conditionscould issue and limitations set forth in the ELOC Purchase Agreement, require Aperture to purchase up to $15 million worth of newly issuedsell from time-to-time shares (the “Put Shares”) of the Company’s common stock, overhaving an aggregate gross sales price of up to $100.0 million through Cantor, as sales agent. During the 36-month term following the effectiveness of the initial resale registration statement described below (the “Investment Period”). From time to time over the Investment Period, and in the Company’s sole discretion,year ended December 31, 2021, the Company may present Aperture with one or more notices requiring Aperture to purchase a specified dollar amount of Put Shares, based on the price per share per day over five consecutive trading days (a “Pricing Period”). The per share purchase price for these shares equals the daily volume weighted average price of the common stock on each date during the Pricing Period on which shares are purchased, less a discount of 6.0% based on a minimum price as set forth in the ELOC Purchase Agreement. In addition, in the Company’s sole discretion, but subject to certain limitations, the Company may require Aperture to purchase a percentage of the daily trading volume of common stock for each trading day during the Pricing Period.


Under the ELOC Purchase Agreement, the Company paid Aperture a document preparation fee of $0.02 million by issuing to Aperture 9,315issued and sold 6,408,087 shares of common stock (the “Fee Shares”pursuant to the Sales Agreement, and together with the Put Shares, the “ELOC Shares”).

On August 23, 2017, in connection with the ELOC Purchase Agreement,received net proceeds of approximately $65.7 million, after deducting fees and expenses. As of December 31, 2021, the Company entered into a Registration Rights Agreement (the "ELOC RRA") with Aperture, pursuanthad the ability to whichoffer and sell shares of common stock having an aggregate offering price of up to $32.3 million under the Company grantedprospectus supplement dated August 13, 2021 to Aperture certain registration rightsthe Company’s prospectus dated September 14, 2020 filed in respect of the Sales Agreement. See Note 13 below for additional information related to the ELOC Shares issuable in accordance withSales Agreement.

2020 Equity Plan

On July 27, 2020, the ELOC Purchase Agreement. UnderBoard unanimously approved, and recommended that the ELOC RRA,Company’s stockholders approve, the Company agreed2020 Equity Plan, to useensure that the Board and its commercially reasonable effortscompensation committee (the “Compensation Committee”) will be able to preparemake the types of awards, and file with the SEC one or more registration statements for the purpose of registering the resale of the maximum ELOC Shares issuable pursuant to the ELOC Purchase Agreement. The Company agreed to file the initial registration statement with the SEC within 90 days after the date of the ELOC Purchase Agreement and to use commercially reasonable efforts to cause that registration statement to be declared effective within 120 days of the date of the ELOC Purchase Agreement (180 days if the registration statement is reviewed by the SEC).


The actual amount of funds that can be raised under the Aperture facility will depend oncovering the number of shares, sold underas necessary to meet the ELOC Purchase Agreement andCompany’s compensatory needs. On July 29, 2020, the market value2020 Equity Plan was approved by the holders of approximately 63% of the Company’s outstanding shares of common stock on that date. The 2020 Equity Plan became effective on September 11, 2020 following the Effective Time of the reverse stock split.

Immediately following the Effective Time, a total of 7,000,000 shares of the Company’s common stock during the Pricing Period of each sale. The Company has not yet filed a registration statementwere reserved for issuance under the ELOC RRA.  Sales2020 Equity Plan. The Board or Compensation Committee may grant the following types of common stockawards under the ELOC Purchase Agreement cannot commence until such registration statement is filed and declared effective by the SEC. There can be no assurance that the Company will use the Aperture facility to raise funds in the future.

20122020 Equity Incentive Plan
Under the Company’s 2012 Equity Incentive Plan, the Company may grant shares,Plan: stock units,options, stock appreciation rights, restricted stock, stock awards, restricted stock units, performance cashshares, performance units, cash-based awards and/or options to employees, directors, consultants, and other service providers.substitute awards. The 2020 Equity Plan will remain in effect until the tenth anniversary of its effective date, unless terminated earlier by the Board. For options, the per share exercise price may not be less than the fair market value of a Company common share on the date of grant. AwardsOptions generally vest and become exercisable over three to four years and expire 10 years from the date of grant. Options generally become exercisable as they vest following

As of December 31, 2021, there were 5,004,035 shares available for grant under the date of grant.


In general, to2020 Equity Incentive Plan.

2012 Equity Plan

The 2020 Equity Plan replaced the extent that2012 Equity Plan, under which no further grants will be made. However, any outstanding awards under the 2012 Plan are forfeited or lapse without the issuance of shares, those shares will again become available for awards.

The 2012Equity Plan will continue in effect for 10 years from its adoption date, unlessaccordance with the Company’s board of directors decides to terminate the plan earlier.
On September 13, 2016, the Board of Directorsterms of the Company approved an amendment to the Company’s 2012 Equity Incentive Plan and any award agreement executed in connection with such outstanding awards. At the Effective Time of the reverse stock split, proportionate adjustments were made to increase the number of shares ofcovered by, and the Company’s commonexercise price applicable to, each outstanding stock available for issuanceoption award under the 2012 Equity Plan by 3,000,000to give effect to the Split Ratio and the reverse stock split. Under the 2012 Equity Plan, the Company could grant shares, stock units, stock appreciation rights, performance cash awards and/or options to employees, directors, consultants, and to increase the annual maximum aggregate number of shares subject to stock option awards that may be granted to any one person under the Plan from 125,000 to 1,100,000.

other service providers.

As of December 31, 2017,2021, there were 1,367,566no shares available for grant under the 2012 Equity Incentive Plan.

F-23


2001 Equity Incentive Plan
2012 Employee Stock Purchase Plan

The Employee Stock Purchase Plan (the “ESPP”) provided eligible employees with the opportunity to acquire an ownership interest in the Company through periodic payroll deductions, based on a six-month look-back period, at a price equal to the lesser of 85% of the fair market value of the ordinary shares at either the beginning of the offering period, or the fair market value on the purchase date. The ESPP was structured as a qualified employee stock purchase plan under Section 423 stock bonus plan under Section 401(a) of the Internal Revenue Code of 1986 and was not subject to the provisions of the Employee Retirement Income Security Act of 1974. There were 21,058 shares initially authorized for issuance under the plan, and the first offering period commenced on June 1, 2014 and ended on October 31, 2014. The second offering period commenced on November 1, 2014 and ended on April 30, 2015. Offerings subsequent to the second offering commence on May 1 and November 1 and end on April 30 and October 31 each year.  On May 3, 2016, the ESPP was terminated.

Stock Option Activity

The following table summarizes stock option activity for the years ended December 31, 2017:2021 and 2020:

Number of

Shares

Weighted

Average

Exercise

Price (per

share)(1)

Weighted-

Average

Remaining

Contractual

Term

(in years)

Aggregate

Intrinsic

Value

($000's)(2)

Outstanding at January 1, 2020

3,176,336

$

4.75

Granted

985,164

7.35

Exercised

(429,330

)

3.55

Cancelled (expired)

(21

)

58.40

Outstanding at December 31, 2020

3,732,149

$

5.57

Granted

1,444,176

12.58

Exercised

(582,936

)

3.98

Cancelled (forfeited)

(81,711

)

7.09

Cancelled (expired)

(81,772

)

13.71

Outstanding at December 31, 2021

4,429,906

$

7.89

7.4

$

1,087

 

Options vested and expected to vest

4,281,658

$

7.77

7.3

$

1,084

Exercisable

2,951,257

$

6.08

6.7

$

1,017

  
Number of
Shares
  
Weighted
Average
Exercise
Price (per
share)(1)
  
Weighted-
Average
Remaining
Contractual
Term (in
years)
  
Aggregate
Intrinsic
Value (2)
 
Outstanding at January 1, 2016  465,401  $19.29       
Granted  1,778,022   3.38       
Exercised  (5,625)  1.77       
Forfeited  (3,416)  5.86       
Expired  (398,547)  18.38       
Outstanding at December 31, 26016  1,835,835  $4.15       
Granted  765,000   2.41       
Forfeited  (152,365)          
Expired  (87)  1.99       
Outstanding at December 31, 2017  2,448,383  $3.67   8.7  $11 
Options vested and expected to vest  2,440,058  $3.67   8.7  $11 
Exercisable  1,307,236  $4.28   8.6  $1 
_______________________

______________________

(1)

The weighted average price per share is determined using exercise price per share for stock options.

(2)

(2)

The aggregate intrinsic value is calculated as the difference between the exercise price of the option and the fair value of the Company’s common stock for in‑the‑moneyin-the-money options at December 31, 2017.2021.

The stock options outstanding and exercisable by exercise price at December 31, 20172021 are as follows:

Stock Options Outstanding

Stock Options Exercisable

Weighted-

Average

Remaining

Weighted-

Average

Weighted-

Average

Contractual

Exercise

Exercise

Number

Life

Price

Number of

Price

Range of Exercise Prices

of Shares

In Years

Per Share

Shares

Per Share

$1.90 - $2.25

216,795

8.00

$

2.16

169,069

$

2.14

$3.33

1,894,168

6.18

$

3.33

1,894,168

$

3.33

$3.50 - $9.65

987,674

9.04

$

6.92

328,349

$

7.33

$10.64 - $15.90

274,425

9.17

$

14.22

113,174

$

12.86

$16.07

733,240

8.21

$

16.07

183,310

$

16.07

$16.90 - $20.00

293,604

5.40

$

17.19

258,187

$

16.96

$20.68

30,000

9.43

$

20.68

5,000

$

20.68

4,429,906

7.40

$

7.89

2,951,257

$

6.08

  Stock Options Outstanding  Stock Options Exercisable 
     Weighted-          
     Average Weighted-    Weighted- 
     Remaining Average    Average 
  
Number
of
  
Contractual
Life
 
Exercise
Price
  Number of 
Exercise
Price
 
Range of Exercise Prices Shares  In Years Per Share  Shares Per Share 
$0.33 - $0.33  150,000   9.68  $0.33   12,500  $0.33 
$1.91 - $3.30  598,353   9.10   2.94   508,352   2.95 
$3.38 - $3.38  1,602,604   8.71   3.38   690,837   3.38 
$3.40 - $4.72  55,625   8.65   3.52   53,750   3.48 
$8.24 - $17.36  9,200   0.13   9.78   9,200   9.78 
$42.88 - $48.00  32,601   0.08   45.52   32,597   45.52 
   2,448,383   8.72  $3.65   1,307,236  $4.28 

The total fair value of options vested for the years ended December 31, 20172021 and 20162020 was $2.1$2.3 million and $0.8$2.2 million, respectively.

F-24


Stock‑Based

Table of Contents

Stock-Based Compensation

The Company’s stock‑basedstock-based compensation expense for stock options is estimated at the grant date based on the award’s fair value as calculated by the Black‑ScholesBlack-Scholes option pricing model and is recognized as expense over the requisite service period. The Black‑ScholesBlack-Scholes option pricing model requires various highly judgmental assumptions including expected volatility and expected term. The expected volatility is based on the combined historical stock volatilities of severalthe Company’s own common stock and that of the Company’sits publicly listed peers over a period equal to the expected terms of the options as the Company does not have a sufficient trading history to userely solely on the volatility of its own common stock. To estimate the expected term, the Company has opted to use the simplified method, which is the use of the midpoint of the vesting term and the contractual term. If any of the assumptions used in the Black‑ScholesBlack-Scholes option pricing model changes significantly, stock‑basedstock-based compensation expense may differ materially in the future from that recorded in the current period. In addition, the Company is required to estimate the expected forfeiture rate and only recognize expense for those shares expected to vest. The Company estimates the forfeiture rate based on historical experience and its expectations regarding future pre‑vestingpre-vesting termination behavior of employees. The Company reviews its estimate of the expected forfeiture rate annually, and stock‑basedstock-based compensation expense is adjusted accordingly.

The weighted‑averageweighted-average fair value‑basedvalue-based measurement of stock options granted under the Company’s stock plans in the years ended December 31, 20172021 and 20162020 was $1.54$10.32 and $2.41$7.35 per share, respectively. The fair value‑ basedvalue-based measurement of stock options granted under the Company’s stock plans was estimated at the date of grant using the Black‑ScholesBlack-Scholes model with the following assumptions:

Year Ended December 31,

2021

2020

Expected term

5 - 6 years

5 - 6 years

Expected volatility

104% - 109%

95% - 111%

Risk-free interest rate

0.98% - 1.35%

0.28% - 1.57%

Expected dividend yield

0%

0%

  Year Ended December 31, 
  2017  2016 
Expected term 5-6 years  5-6 years 
Expected volatility 83 - 88% 85 - 90% 
Risk-free interest rate 1.8 - 2.1% 1.3 - 1.4% 
Expected dividend yield 0% 0%

Total stock‑based compensation expense for stock option grants recognized was as follows:

Year Ended December 31,

2021

2020

General and administrative

$

4,028

$

1,773

Research and development

1,340

337

Total stock-based compensation

$

5,368

$

2,110

  Year Ended December 31, 
  2017  2016 
General and administrative $1,753  $547 
Research and development  362   297 
  $2,115  $844 

At December 31, 2017,2021, the Company had $2.2$12.2 million of total unrecognized compensation expense, net of estimated forfeitures, related to outstanding stock options that will be recognized over a weighted‑averageweighted-average period of 1.82.3 years.

11.

9. Income Taxes

No provision for federal income taxes has been recorded for the years ended December 31, 20172021 and 20162020 due to net losses and the valuation allowance established.

Deferred tax assets and liabilities reflect the net tax effects of net operating loss and tax credit carryovers and the temporary differences between the carrying amounts of assets and liabilities for financial reporting and the amounts used for income tax purposes. Significant components of the Company's deferred tax assets are as follows:

As of December 31,

2021

2020

Deferred tax assets:

Net operating losses

$

143,732

$

75,149

Research and other credits

2,178

2,178

Stock based compensation

3,354

3,256

In-Process research and development

1,132

1,193

Other

230

665

Total deferred tax assets

150,626

82,441

 

Valuation allowance

(150,626

)

(82,441

)

Net deferred tax assets

$

0-

$

0-

F-25

  December 31, 
  2017  2016 
Deferred tax assets:      
Net operating losses $45,791  $57,903 
Research and other credits  2,178   2,121 
Stock based compensation  1,585   2,164 
In-Process research and development  1,375   1,246 
Other  676   761 
Total deferred tax assets  51,605   64,195 
         
Valuation allowance  (51,605)  (64,195)
Net deferred tax assets $-  $- 

A reconciliation of the statutory tax rates and the effective tax rates for the years ended December 20172021 and 20162020 is as follows:

Year Ended December 31,

2021

2020

Statutory rate

21.0

%

21.0

%

Valuation allowance

(28.5

)%

(27.9

)%

Nondeductible stock compensation

0.4

%

0-

%

Other

7.1

%

6.9

%

Effective tax rate

0-

%

0-

%

  Year Ended December 31, 
  2017  2016 
Statutory rate  34.0%  34.0%
Valuation allowance  57.6%  (34.8)%
Deferred tax expense from enacted rate reduction  (98.7)%  -%
Nondeductible stock compensation  (0.1)%  (0.1)%
Other  7.2%  0.9%
Effective tax rate  -%  -%
The

On December 22, 2017, the President of the United States signed into law the Tax Cuts and Jobs Act (the "Tax Act"), enacted on December 22, 2017, among other things, permanently loweredtax reform legislation. This legislation makes significant change in U.S. tax law including a reduction in the statutory federal corporate tax rates, changes to net operating loss carryforwards and carrybacks, and a repeal of the corporate alternative minimum tax. The legislation reduced the U.S. corporate tax rate from 35% to 21%, effective for tax years including or beginning January 1, 2018. Under. As a result of the guidance of ASC 740, "Income Taxes" ("ASC 740"),enacted law, the Company revalued itswas required to revalue deferred tax assets and liabilities at the 21% for the year ended December 31, 2017. This revaluation resulted in additional income tax expense of $21.6 million in continuing operations, a corresponding reduction in the net deferred tax assets on the date of enactment based on the reduction in the overall futureasset, an additional income tax benefit expected to be realized at the lower tax rate implemented by the new legislation. After reviewing the Company's inventory of deferred tax assets on the date of enactment and giving consideration to the future impact of the lower corporate tax rates and other provisions of the new legislation, the Company's revaluation of its net deferred tax assets resulted in a decrease of $21.6 million, and a corresponding reduction in the valuation allowance on net deferred tax assets. Although in the normal course of business the Company is required to make estimates and assumptions for certain tax items which cannot be fully determined at period end, the Company did not identify items for which the income tax effectsThe other provisions of the Tax Cuts and Jobs Act did not have not been completed as of December 31,a material impact on the 2017, and, therefore, considers its accounting for the tax effects of the Tax Act on its deferred tax assets to be complete as of December 31, 2017.

2018 or 2019 consolidated financial statements.

Realization of deferred tax assets is dependent upon future earnings, if any, the timing and amount of which are uncertain. Accordingly, the net deferred tax assets have been fully offset by a valuation allowance. The valuation allowance decreasedincreased by $12.6$68.2 million during 20172021 and increased by $10.5$25.0 million during 2016.

2020.

At December 31, 2017,2021, the Company had federal net operating loss carryforwards of approximately $166$166.2 million, which expire in the years 20212022 through 2037, and state net operating loss carryforwards of approximately $156$522.5 million, which expire in the years 2028 through 2041. The Company also has federal net operating loss carryforwards generated in the years 2018 through 2037.

$346.9 million that have no expiration date as a result of the December 22, 2017 tax law changes discussed above.

At December 31, 2017,2021, the Company had federal research and development credit carryforwards of approximately $1.3 million, which expire in the years 2022 through 2035 and state research and development credit carryforwards of approximately $2.2 million. The state research and development credit carryforwards can be carried forward indefinitely.

During 2013, the Company completed a Section 382 study in accordance with the Internal Revenue Code of 1986, as amended, and similar state provisions. The study concluded that the Company has experienced several ownership changes since inception. This causes the Company's utilization of its net operating loss and tax credit carryforwards to be subject to substantial annual limitations. These results are reflected in the above carryforward amounts and deferred tax assets. The Company's ability to utilize its net operating loss and tax credit carryforwards may beare further limited as a result of subsequent ownership changes. All such limitations could result in the expiration of carryforwards before they are utilized. An ownership change may have occurred during 2015 or 2016 andor 2017 or 2018, or all threefour years and in connection with the Restructuring Transactions describedthat occurred in Note 10.2018. As a result, tax attributes such as net operating losses and research and development credits may be subject to further limitation.

The Company adopted FASB Interpretation ASC 740, Income Taxes (previously Accounting for Uncertainties in Income Taxes - an interpretation of FASB Statement No. 48 ("FIN 48") effective January 1, 2009. 

FASB ASC 740 requires that the Company recognize the financial statement effects of a tax position when it is more likely than not, based on the technical merits, that the position will be sustained upon examination.

A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows:

Balance at December 31, 2019

1,060

Additions based on tax positions related to prior year

0-

Additions based on tax positions related to current year

0-

Balance at December 31, 2020

1,060

Additions based on tax positions related to prior year

0-

Additions based on tax positions related to current year

0-

Balance at December 31, 2021

$

1,060

Balance at December 31, 2015 $1,068 
Additions based on tax positions related to prior year  (9)
Additions based on tax positions related to current year  68 
Balance at December 31, 2016  1,127 
Additions based on tax positions related to prior year  (67)
Additions based on tax positions related to current year  - 
Balance at December 31, 2017 $1,060 

There were no interest or penalties related to unrecognized tax benefits. Substantially all of the unrecognized tax benefit, if recognized to offset future taxable income would affect the Company’s tax rate. The Company does not anticipate that the amount of existing unrecognized tax benefits will significantly increase or decrease within the next 12 months. Because of net operating loss carryforwards, substantially all of the Company’s tax years remain open to federal tax and state tax examination.

F-26


The Company files income tax returns in the U.S. federal jurisdiction, California and California.Florida. Federal and California corporation income tax returns beginning with the 2001 tax year remain subject to examination by the Internal Revenue Service and the California Franchise Tax Board and the Florida corporate income tax returns beginning with 2018 remain subject to examination by the Florida Department of Revenue, respectively.


12.

10. Employee Benefit Plan

The Company has established a 401(k) tax‑deferredtax-deferred savings plan (the “401(k) Plan”), which permits participants to make contributions by salary deduction pursuant to Section 401(k) of the Internal Revenue Code. The Company is responsible for administrative costs of the 401(k) Plan. The Company may, at its discretion, make matching contributions to the 401(k) Plan. The Company contributed $23,000 in matching contributions to the 401(k) Plan for the year ended December 31, 2021. No employer contributions have beencontribution was made to date.


13.the plan for the year ended December 31, 2020.

11. Litigation

Bankruptcy Proceeding

The Company filed for protection under Chapter 11 of Title 11 of the United States Bankruptcy Code on December 29, 2015.  See Note 2 for additional information related to the bankruptcy.
Securities Class Action Litigation

Avid Arbitration

On December 18, 2015,17, 2021, Avid Bioservices, Inc. (“Avid”) filed a putative class action lawsuit (captioned Li v. KaloBios Pharmaceuticals, Inc. et al., 5:15-cv-05841-EJD) was filedDemand for Arbitration claiming more than $20.5 million in damages against the Company inwith the United States District Court forAmerican Arbitration Association entitled, Avid Bioservices, Inc. v. Humanigen, Inc. (AAA Case No. 01-21-0018-0523). The Demand contains three claims for: (1) Breach of Contract concerning the Northern DistrictProcess Development and Manufacturing Master Services Agreement; (2) Anticipatory Breach of California (the “Class Action Court”), alleging violations ofContract concerning the federal securities laws byCapacity Expansion and Contribution/Commitment letter; and (3) Trade Libel and Commercial Disparagement relating to their inability to perform. Avid claims that the Company Herb Cross and Martin Shkreli,cancelled the Company’s former Chairman and Chief Executive Officer.  On December 23, 2015, a putative class action lawsuitcontract after Avid was filed againstunable to successfully produce any full batches of lenzilumab BDS, but that the Company instill owes the Class Action Court (captioned Sciabacucchi v. KaloBios Pharmaceuticals, Inc. et al., 3:15-cv-05992-CRB), similarly alleging violations offull amount due under the federal securities laws bycontract for all batches never produced. Avid blamed its failed attempts on a subcontractor. To date, the Company and  Mr. Shkreli.  has paid Avid $10.6 million, despite Avid not being able to produce any full BDS batches.

On December 31, 2015, a putative class action lawsuit was filed againstJanuary 6, 2022, the Company in the Class Action Court (captioned Isensee v. KaloBios Pharmaceuticals, Inc. et al., Case No. 15-cv-06331-EJD) also alleging violation of the federal securities laws by the Company, a former officer and Mr. Shkreli.  On April 18, 2016, and amended complaint was filed in the Isensee suit, adding Herb Cross and Ronald Martell as defendants. On April 28, 2016, the Class Action Court consolidated these cases (the “Securities Class Action Litigation”) and appointed certain plaintiffs as the lead plaintiffs.  The lead plaintiffs in the Securities Class Action Litigation were seeking damages of $20 million on behalf of all the affected members of the class represented in the Securities Class Action Litigation, (the “Securities Class Action Members”).


On June 15, 2016, a settlement stipulation (the “Securities Class Action Settlement”), was approved by the Bankruptcy Court. Subject to the approval of the Class Action Court, the Securities Class Action Settlement required the Company to issue 300,000 shares of common stock and submit a payment of $0.3 million to the Securities Class Action Members and advance insurance proceeds of $1.25 million to the Securities Class Action Members (collectively, the consideration is the “Securities Class Action Settlement Consideration”).  On January 20, 2017, the Class Action Court preliminarily approved the Securities Class Action Settlement and set a final settlement approval hearing for May 11, 2017. Subject to the final approval of the Securities Class Action Settlement, any Securities Class Action Member is entitled to share in the Securities Class Action Settlement Consideration.  The Securities Class Action Settlement provides for releases and related injunctions to be granted for the benefit of, among others, the Company, Ronald Martell, Herb Cross and all of the Company’s past, present and future directors, officers and employees, excluding Mr. Shkreli. Alternatively, Securities Class Action Members may exclude themselves from the Securities Class Action Settlement and are thereby not bound by the terms of the Securities Class Action Settlement nor entitled to receive any amount of the Securities Class Acton Settlement Consideration.  Such Securities Class Action Members, to the extent they properly exclude themselves from the Securities Class Action Settlement and have timely and properly filed a proof of claim in the bankruptcy case, may have certain rights under the Plan with respect to such claims. Pursuant to the Plan and Confirmation Order, such claims are subordinated to the level of the Company’s common stock that was issued and outstanding when the Company’s bankruptcy case was filed. Such claims are also subject to the Company’s objection.

The Company’s agreement to the Securities Class Action Settlement was not in any way an admission of the Company’s wrongdoing or liability. As of December 31, 2016, the 300,000 shares have been issued and the $0.3 million payment has been made.

PIPE Litigation

On January 7, 2016, certain investors (the “PIPE Claimants”), commenced an adversary proceeding (captioned Gregory Rea, et al. v. KaloBios Pharmaceuticals, Inc., Adv. Pro. No. 16-50001 (LSS)) in the Bankruptcy Court against the Company alleging implied trust theories, breach of contract, fraud and violations of the federal securities laws in connection with the PIPE Claimants’ purchase of the Company’s common stock in the Private Placement (the “PIPE Litigation”).  The PIPE Claimants also raised certain other objections to the Company’s bankruptcy proceeding.  The PIPE Claimants sought an aggregate total of approximately $6.9 million in damages.

On May 9, 2016, the Bankruptcy Court entered an order approving a settlement stipulation between the Company and the PIPE Claimants (the “Settlement Stipulation”).  Under the Settlement Stipulation, in connection with the effectiveness of the Plan, and per the terms of the Settlement Stipulation, the Company became obligated to issue 327,608 shares to the PIPE Claimants and make a payment of $0.3 million to the PIPE Claimants for the purpose of satisfying expenses related to the PIPE Litigation. As of December 31, 2016, the 327,608 shares have been issued and the $0.3 million payment has been made.

Claim by Marek Biestek

Marek Biestek was a director of the Company who, while not a plaintiff in the above described PIPE Litigation, filed a proof of claim alleging damages from the PIPE transaction and filed an objectionAnswer to Avid’s Demand, denying the confirmation of the Plan.  To resolve his objection to the Planallegations and his proof of claim, theasserting affirmative defenses. An Arbitration Hearing date has not yet been scheduled.

The Company settled with him individually by issuing him 3,750 additional shares of common stock. Mr. Biestek, as a former director of the Company, was excluded from the Securities Class Action Memberswill vigorously defend itself, assert all available claims against Avid, and therefore received nothing from the Securities Class Action Litigation.

As of December 31, 2016,seek all of the above claims have been satisfied and shares issued.
available remedies.

Savant Litigation


On July 10, 2017,

The Company is currently involved in litigation with Savant in an action captioned Humanigen, Inc. v. Savant Neglected Diseases, LLC, C.A. No. N17C-07-068-PRW [CCLD]. In this litigation, the Company filed a complaint against Savant Neglected Diseases, LLC (“Savant”) in the Superior Court forof the State of Delaware, New Castle County (the “Delaware“Superior Court”).KaloBios Pharmaceuticals, Inc. v. Savant Neglected Diseases, LLC, No. N17C-07-068 PRW-CCLD. The Company asserted breach of contract, and declaratory judgment and fraudulent inducement claims against Savant arising under the MDC Agreement. See Note 6 - “Savant Arrangements” for more information about the MDC Agreement.  The Company alleges that

Subsequently, Savant has breached its MDC Agreement obligations to pay cost overages that exceedfiled a budgetary threshold as well as other related MDC Agreement representations and obligations. In the litigation,complaint against the Company has alleged thatand Madison Joint Venture LLC (“Madison”) in the Delaware Court of Chancery (the “Chancery Action”) seeking to “recover as of June 30, 2017, Savant was responsible for aggregate cost overages of approximately $3.4 million, net of a $0.5 million deductible under the MDC.   The Company asserts thatdamages amounts owed to it is entitled to offset $2.0 million in milestone payments due Savant against the cost overages, such that as of June 30, 2017 Savant owed the Company approximately $1.4 million.


On July 12, 2017, Savant removed the case to the United States District Court for the District of Delaware, claiming that the action is related to or arises under the bankruptcy court case from which we emerged in July 2016. In re KaloBios Pharmaceuticals, Inc., No. 15-12628-LSS (Bankr. D. Del.). On July 27, 2017, Savant filed an Answer and Counterclaims.  Savant’s filing alleges breaches of contracts under the MDC Agreement, and to reclaim Savant’s intellectual property,” among other things. This action was subsequently consolidated with the Security Agreement, claiming that we breached its obligations to paySuperior Court action.

On July 9, 2021, the milestone payments and other related representations and obligations.


On August 1, 2017,Court issued a memorandum opinion resolving various summary judgment motions. In the Company moved to remandopinion, the case back to the Delaware Superior Court. Briefing on that motion is completed and awaiting determination by the Bankruptcy Court.

On August 2, 2017, Savant sent a foreclosure notice to the Company, demanding that it provide the Collateral as defined in the Security Agreement for inspection and possession on August 9, 2017, with a public sale to be held on September 1, 2017.  The Company moved for a Temporary Restraining Order (the “TRO”) and Preliminary Injunction in the bankruptcy court on August 4, 2017.  Savant responded on August 7, 2017.  On August 7, 2017, the bankruptcy courtCourt granted the Company’s motion for summary judgment on certain of Savant’s claims. Accordingly, Savant’s claims are now limited to breach of contract and fraudulent transfer claims. Savant’s summary judgment motion was denied in its entirety leaving Humanigen’s fraud and contract claims against Savant for trial.

On November 22, 2021, the Court held a TRO, entering an order prohibitingscheduling conference regarding the trial date. Subsequently, on December 15, 2021, the Court scheduled a five-day jury for the week of September 12, 2022, with a pre-trial conference scheduled for August 12, 2022. The Company is prepared to defend itself vigorously and pursue all remedies available against Savant from collecting on or sellingfor breach of contract and fraud.

Private Placement Litigation

On June 15, 2020, a complaint was filed against the Collateral, entering our premises, issuing any default notices to us, or attempting to exercise any other remedies underCompany and Dr. Durrant in the MDC Agreement or the Security Agreement.  The parties have stipulated to continue the provisionsCommercial Division of the TRO in full force and effect until further orderSupreme Court of the appropriate court.

On January 22, 2018, Savant wroteState of New York. The case caption is Alliance Texas Holdings, LLC et al. v. Humanigen, Inc. et al., Index No. 652490/2020 (“Alliance Texas Holdings Case”). Dr. Durrant has been dismissed as an individual defendant in the case. The plaintiffs in the Alliance Texas Holdings Case comprise a group of prospective investors introduced to Humanigen by Noble Capital Markets, Inc. (“Noble”), which had been engaged by the Company as a non-exclusive placement agent in connection with a private placement of its common stock (the “Private Placement”). The plaintiffs had indicated interest in purchasing shares of common stock in the Private Placement but, due to the Bankruptcy Court requesting dissolutionstrength of demand for shares from other prospective investors, the plaintiffs were not allocated any investment amount. The plaintiffs allege that the Company breached a contractual obligation to deliver shares of common stock to the plaintiffs. The plaintiffs seek to recover for losses due to the Company’s alleged failure to deliver shares to them and seek equitable relief in the form of specific performance.

On April 19, 2021, the Company and Noble entered into a confidential settlement agreement in respect of a separate lawsuit brought by Noble related to the Private Placement (the “Noble Case”) captioned Noble Capital Markets, Inc. v. Humanigen, Inc., Case No. 9:20-CV-81131-WPD, pursuant to which the Noble Case was dismissed with prejudice.

On February 24, 2022, the Company entered into a confidential settlement agreement and release with respect to the claims raised in the Alliance Texas Holding Case, pursuant to which the Alliance Texas Holding Case has been discontinued with prejudice, except as to two Plaintiffs whose claims comprised less than 10% of the TRO.  total alleged investments, as to whom the case will be discontinued without prejudice.

12. License and Collaboration Agreements

Kite Agreement

On January 29, 2018,May 30, 2019, the Bankruptcy Court grantedCompany entered into a collaboration agreement (the “Kite Agreement”) with Kite Pharmaceuticals, Inc. (“Kite”), pursuant to which the MotionCompany and Kite are conducting a multi-center Phase 1b/2 study of lenzilumab with Kite’s Yescarta in patients with relapsed or refractory B-cell lymphoma, including diffuse large B-cell lymphoma (“DLBCL”). On April 19, 2021, the Company announced positive preliminary data from this study. As a result of this positive preliminary data and the conclusion of the Phase 1b portion of the study, the Company elected to Remandterminate the clinical collaboration agreement with Kite. Enrollment in the Phase 1b portion of the study is closed and denied Savant’s requestthe study itself shall be closed by the fourth quarter of 2021. The effective date of termination of the clinical collaboration with Kite was December 31, 2021. Until the Phase 1b portion of the study is terminated and the last subject transitioned onto the Kite long term follow up protocol, Humanigen and Kite will cooperate to dissolveensure the TRO, ordering that any requestorderly wind down of study activities. The Company is preparing to dissolveinitiate a Company-sponsored Phase 3 study with commercially available CD19 CAR-T therapies in non-Hodgkin lymphoma in 2022 and met with FDA in December 2021 to discuss the TRO be madestudy protocol. The Company currently plans to enroll more than 150 patients in the study.

During the years ended December 31, 2021 and 2020, the Company paid $0 and $2.0 million, respectively, to Kite towards its contribution for the study, which payments were recorded as Research and development expense.

Mayo Agreement

On June 19, 2019, the Company entered into an exclusive worldwide license agreement (the “Mayo Agreement”) with the Mayo Foundation for Medical Education and Research (“Mayo”) for certain technologies used to create CAR-T cells lacking GM-CSF expression through various gene-editing tools including CRISPR-Cas9 (“GM-CSFKO CAR-T”). The license covers various patent applications and know-how developed by Mayo in collaboration with the Company. These licensed technologies complement and broaden the Company’s position in the GM-CSF neutralization space and expand the Company’s discovery platform aimed at improving CAR-T to include gene-edited CAR-T cells.

Pursuant to the Delaware Superior Court.

Mayo Agreement, the Company paid $0.2 million to Mayo in June 2020, which payment was accrued as Research and development expense in June 2019. The Mayo Agreement also requires the payment of milestones and royalties upon the achievement of certain regulatory and commercialization milestones.

Zurich Agreement

On February 13, 2018 Savant madeJuly 19, 2019, the Company entered into an exclusive worldwide license agreement (the “Zurich Agreement”) with the University of Zurich (“UZH”) for technology used to prevent or treat GvHD through GM-CSF neutralization. The Zurich Agreement covers various patent applications filed by UZH which complement and broaden the Company’s position in the application of GM-CSF and expands the Company’s development platform to include improving allogeneic Hematopoietic Stem Cell Transplantation (“HSCT”). The Zurich Agreement requires the payment of nominal annual maintenance fees and milestones and royalties upon the achievement of certain regulatory and commercialization milestones.

Clinical Trial Agreement with the National Institute of Allergy and Infectious Diseases

On July 24, 2020, the Company entered into a letter requestclinical trial agreement (the “ACTIV-5 Clinical Trial Agreement”) with the National Institute of Allergy and Infectious Diseases (“NIAID”), part of NIH, which is part of the U.S. Government Department of Health and Human Services, as represented by the Division of Microbiology and Infectious Diseases. Pursuant to the Delaware Superior Court to dissolve the TRO.  Also on February 13, 2018, Humanigen filed its Answer and Affirmative defenses to Savant’s Counterclaims.  On February 15, 2018 Humanigen filed a letter opposition to Savant’s request to dissolve the TRO and requesting a status conference.  There have been no further proceedings in this matter to date.


The $2.0 million in milestone payments due Savant are included in Accrued expensesACTIV-5 Clinical Trial Agreement, lenzilumab is being evaluated in the accompanying balance sheetNIAID-sponsored ACTIV-5/BET-B in hospitalized patients with COVID-19. The ACTIV-5/BET-B study protocol was modified to include baseline CRP below 150 mg/L (the CRP subgroup) as the primary analysis population. The ACTIV-5/BET-B study has reached its target enrollment with over 400 patients enrolled that met this criterion and the Company anticipates top-line data in late first quarter or early second quarter of 2022. See Note 1 above for further information regarding ACTIV-5/BET-B.

Pursuant to the ACTIV-5 Clinical Trial Agreement, NIAID will serve as sponsor and is responsible for funding, supervising and overseeing ACTIV-5/BET-B. The Company will be responsible for providing lenzilumab to NIAID without charge and in quantities to ensure a sufficient supply of lenzilumab. The ACTIV-5 Clinical Trial Agreement imposes additional obligations on the Company that are reasonable and customary for clinical trial agreements of this nature, including in respect of compliance with data privacy laws and potential indemnification obligations. The Company will have access to data from ACTIV-5/BET-B once concluded.

CRADA

On November 5, 2020, the Company and the Department of Defense (“DoD”) Joint Program Executive Office for Chemical, Biological, Radiological and Nuclear Defense (“JPEO-CBRND” or “JPEO”) entered into a Cooperative Research and Development Agreement (“CRADA”) in collaboration with the Biomedical Advanced Research and Development Authority (“BARDA”), part of the Office of the Assistant Secretary for Preparedness and Response (“ASPR”) at the U.S. Department of Health and Human Services (“HHS”), in support of Operation Warp Speed (“OWS”), to assist in the development of lenzilumab, in connection with a potential EUA for COVID-19.

Pursuant to the CRADA, the Company has been provided access to a full-scale, integrated team of OWS manufacturing, and regulatory subject matter experts, leading decision makers and statistical support in its efforts to apply for EUA for lenzilumab as a potential treatment for COVID-19.

13. Subsequent Events

Subsequent to December 31, 2017. Recovery2021 and through the date of the cost overages from Savant, if any, will be recorded in the period received.


14. Related Party Transactions

On May 24, 2016, the board of directors approved a one-time equity award (the “Equity Award”) to each of Cameron Durrant, Ronald Barliant and David Moradi. On June 30, 2016, in accordance with the Plan,this filing, the Company issued an aggregate of 323,155and sold 1,301,548 shares of common stock under the Equity Award.  The Company recorded a chargeSales Agreement for net proceeds of $1.5 million representing the fair value of the shares issued and classified $0.7 million and $0.8 million as Reorganization items, net and General and administrative expenses, respectively.
$3.7 million.

On June 30, 2016, in connection with the settlement of the Term Loan, as defined in Note 2 above, 2,115,432 shares of common stock were issued to certain Lenders in repayment of the Company’s debt obligations who were deemed to be affiliates of the Company.


On December 21, 2016,February 24, 2022, the Company entered into a Creditconfidential settlement agreement and Security Agreement, as amended on March 21, 2017 and on July 8, 2017 as more fully described in Note 7, with certain lenders who were deemed to be affiliates of the Company.
On December 21, 2017, the Company entered into a Purchase Agreement and a Forbearance Agreement as more fully described in Note 10, with certain lenders and investors who were deemed to be affiliates of the Company.
15. Subsequent Events
On February 27, 2018 the Company closed the Restructuring Transaction describe in Note 10 and issued 91,815,517 shares of common stock in exchange for extinguishment of all outstanding term loans, accrued interest and fees totaling $18.4 million and received cash proceeds of $1.5 million. In addition, all of the Company’s assets related to benznidazole were transferred to a new joint venture entity as contemplated in the Restructuring Transactions.
On March 12, 2018, the Company issued 2,445,557 shares of its common stock for total proceeds of $1.1 million to accredited investors.

EXHIBIT INDEX

          Filed or
    Incorporated by Reference Furnished
Exhibit No. Exhibit Description Form Date Number Herewith
           
2.1  8-K June 22, 2016 2.1  
           
3.1  8-K July 6, 2016 3.1  
           
3.2  8-K August 7, 2017 3.1  
           
3.3  8-K February 28, 2018 3.1  
           
3.4  8-K August 7, 2017 3.2  
           
4.1  S-1 January 15, 2013 4.1  
           
4.2  8-K June 24, 2013 10.2  
           
4.3  8-K December 9, 2015 4.1  
           
4.4  8-K December 9, 2015 4.2  
           
4.5†  10-Q September 23, 2016 4.1  
           
4.6  8-K August 25, 2017 4.1  
           
10.1*  10-Q August 10, 2015 10.2  
10.2*  S-8 October 14, 2016 10.2  
           
10.3*  10-12G June 12, 2012 10.8  
           
10.4*  10-K March 13, 2014 10.37  
           
10.5*  8-K April 24, 2015 10.1  
           
10.6*  10-12G June 12, 2012 10.11  
           
10.7  10-12G/A September 12, 2012 10.12  
           
10.8  10-12G/A August 7, 2012 10.13  
           
10.9  10-12G/A August 7, 2012 10.14  
           
10.10  10-Q May 8, 2014 10.8  
           
10.11  10-Q May 8, 2014 10.9  
           
10.12†  10-12G/A September 12, 2012 10.16  
           
10.13†  10-12G/A August 7, 2012 10.17  
           
10.14†*  10-K March 13, 2014 10.38  
10.15  10-Q November 6, 2014 10.1  
           
10.16  10-Q May 11, 2015 10.1  
           
10.17†  8-K December 9, 2015 10.1  
           
10.18†  8-K December 16, 2015 10.1  
           
10.19†  8-K December 9, 2015 10.2  
           
10.20†  10-Q September 23, 2016 10.1  
           
10.21  8-K April 7, 2016 10.1  
           
10.22  8-K April 7, 2016 10.2  
           
10.23  8-K April 7, 2016 10.7  
           
10.24  8-K July 6, 2016 10.1  
           
10.25†  10-Q/A December 30, 2016 10.9  
           
10.26*  10-Q September 23, 2016 10.2  
10.27*  10-Q November 10, 2016 10.2  
           
10.28  8-K December 23, 2016 10.1  
           
10.29  8-K December 23, 2016 10.2  
           
10.30  10-K March 9, 2017 10.40  
           
10.31  8-K March 23, 2017 10.1  
           
10.32  8-K July 12, 2017 10.1  
           
10.33  8-K August 25, 2017 10.1  
           
10.34†        Furnished herewith
           
10.35+        Furnished herewith
           
10.36+        Furnished herewith
           
21.1        Furnished herewith
           
23.1        Furnished herewith
           
31.1        Furnished herewith
           
31.2        Furnished herewith
           
32.1**        Furnished herewith
           
32.2**        Furnished herewith
101.INSXBRL Instance Document
101.SCHXBRL Taxonomy Extension Schema
101.CALXBRL Taxonomy Extension Calculation Linkbase Document
101.DEFXBRL Taxonomy Extension Definition Linkbase Document
101.LABXBRL Taxonomy Extension Label Linkbase Document
101.PREXBRL Taxonomy Extension Presentation Linkbase Document
†Confidential treatment has been grantedrelease with respect to certain portions of this exhibit. Omitted portions have been filed separately with the Securities and Exchange Commission.
*Indicates management contract or compensatory plan
**The certifications attached as Exhibits 32.1 and 32.2 that accompanies this Annual Report on Form 10-K are not deemed filed withclaims raised in the Securities and Exchange Commission and are not to be incorporated by reference into any filing of Registrant under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended, whether made before or after the date of this Annual Report on Form 10-K, irrespective of any general incorporation language contained in such filing.
Alliance Texas Holding Case. See Note 11 above for further information.

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