The following discussion and analysis of our financial condition and results of operations should be read together with our financial statements and the related notes and the other financial information included elsewhere in this Annual Report. This discussion contains forward-looking statements that involve risks and uncertainties. Our actual results could differ materially from those anticipated in these forward-looking statements as a result of various factors, including those discussed below and elsewhere in this Annual Report, particularly those under “Risk Factors.” Additionally, many of these risks and uncertainties are currently elevated by and may or will continue to be elevated by the novel coronavirus (“COVID-19”) pandemic. We undertake no obligation to update these forward-looking statements to reflect events or circumstances after the date of this report or to reflect actual outcomes.

CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS

This report on Form 10-K contains forward-looking statements made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995 under Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. Forward-looking statements include statements with respect to our beliefs, plans, objectives, goals, expectations, anticipations, assumptions, estimates, intentions and future performance, and involve known and unknown risks, uncertainties and other factors, which may be beyond our control, and which may cause our actual results, performance or achievements to be materially different from future results, performance or achievements expressed or implied by such forward-looking statements. All statements other than statements of historical fact are statements that could be forward-looking statements. You can identify these forward-looking statements through our use of words such as “may,” “can,” “anticipate,” “assume,” “should,” “indicate,” “would,” “believe,” “contemplate,” “expect,” “seek,” “estimate,” “continue,” “plan,” “point to,” “project,” “predict,” “could,” “intend,” “target,” “potential” and other similar words and expressions of the future.

There are a number of important factors that could cause the actual results to differ materially from those expressed in any forward-looking statement made by us. These factors include, but are not limited to:

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Trademarks

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This Annual Report on Form 10-K includes trademarks, service marks, and trade names owned by us or other companies. All trademarks, service marks, and trade names included in this Annual Report on Form 10-K are the property of their respective owners. Solely for convenience, the trademarks and trade names in this report may be referred to without the ® and ™ symbols, but such references should not be construed as any indicator that their respective owners will not assert, to the fullest extent under applicable law, their rights thereto.

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ADDITIONAL NOTES

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PART I

ITEM 1. BUSINESS

Overview

Timber Pharmaceuticals, Inc. (“Timber”, the “Company”, “we”, “us”) is a clinical-stage biopharmaceutical company focused on the development and commercialization of treatments for orphan dermatologic diseases. Our investigational therapies have proven mechanisms-of-action backed by decades of clinical experience and well-established CMC (chemistry, manufacturing and control) and safety profiles. We are initially focused on developing non-systemic treatments for rare dermatologic diseases including congenital ichthyosis facial angiofibromas (“FAs”) in tuberous sclerosis complex (“TSC”CI”), including X-linked recessive CI (“XLRI”) and scleroderma.autosomal recessive CI (“ARCI”) and other sclerotic skin diseases. Our lead programs are TMB-001, TMB-002 and TMB-003.late-stage program is TMB-001. TMB-003 is our earliest stage program.

Products

TMB-001

TMB-001, a proprietarypatented topical formulation of isotretinoin is currently being evaluated in ausing our patented IPEG™ delivery system, completed its Phase 2b clinical trial (the “CONTROL study”) in the fourth quarter of 2021 for the treatment of moderate to severe subtypes of congenital ichthyosis (“CI”),

CI, a group of rare genetic keratinization disorders that lead to dry, thickened, and scaling skin. This study demonstrated a clinically meaningful reduction in targeted and overall severity of CI along with a favorable safety profile. The efficacy, pharmacokinetics and safety of TMB-001 is currently being evaluated in a pivotal Phase 3 ASCEND clinical trial (the “ASCEND study”). A prior Phase 1/2 study involving 19 patients with CI demonstrated safety and a signal of preliminary efficacy of TMB-001, as well as minimal systemic absorption.  In 2018, theThe FDA (through its Orphan Products Grant program) awarded us the first tranche of a $1.5 million grant in the amount of $500,000 to support clinical trials evaluating TMB-001 through its Orphan Products Grant program. In March 2020 and MarchTMB-001.

On October 7, 2021, we announced the FDA awarded us the second and third tranchescompletion of the grant, respectively, each in the amount of $500,000.

TMB-002, a proprietary topical formulation of rapamycin, is currently being evaluated in aour Phase 2b clinical trial in CI. The Phase 2b CONTROL study was a randomized, double-blind, vehicle-controlled study designed to assess the efficacy and safety of two concentrations of TMB-001 (0.05% and 0.1% isotretinoin) for the treatment of FAstwo distinct subtypes of moderate-to-severe CI XLRI and autosomal recessive congenital ichthyosis (“ARCI”) in TSC,patients (n=33) nine years old or older. Subjects applied TMB-001 twice daily for 12 weeks. The primary endpoint was the reduction of targeted ichthyosis severity, determined by a multisystem genetic disorder resulting50 percent or greater reduction in the growthvalidated Visual Index for Ichthyosis Severity (“VIIS”) scaling score (or VIIS-50), a clinically meaningful change. Secondary endpoints included reduction in overall ichthyosis severity, as measured by a two-point improvement using the (“IGA”) scale, also considered to be a clinically relevant improvement. The study was not designed or powered for statistical analysis of hamartomasthe endpoints and was intended to provide information for future development.

Top-line results including descriptive statistics are described below:

On February 3, 2022, we announced the successful completion of an End-of-Phase 2 meeting with the FDA that resulted in multiple organs. TSC results from dysregulationa clear path to progress to a pivotal Phase 3 study for TMB-001. The clinical development program for TMB-001 includes a Phase 3 study with an efficacy arm and a maximum use pharmacokinetic arm as well as a smaller bridging study required to bridge to the oral reference product. Based on FDA feedback at the End-of-Phase 2 meeting, we initiated the pivotal Phase 3 ASCEND study of TMB-001 0.05% in the mTOR pathway,second quarter of 2022.  The primary endpoint is the comparison of proportions of subjects with a ≥2 point change from the baseline in IGA-scaling and asfissuring scores in the treatment area at 12 weeks between TMB-001 0.05% and vehicle-treated subjects. Secondary endpoints include the reduction in overall ichthyosis severity. On June 23, 2022, we announced that the first four patients had been enrolled in the Phase 3 ASCEND study. We expect to complete enrollment of the Phase 3 ASCEND study by September 2023 and to publish top-line data by May 2024.

In March 2022, a topical mTOR inhibitor, TMB-002 may address FAsthird party presented a late-breaking presentation of a sub-analysis of our Phase 2b CONTROL study that evaluated TMB-001 at the American Academy of Dermatology 2022 Annual Meeting. The sub-type analysis found that TMB-001 0.05% demonstrated a substantially greater proportion of patients achieving VIIS-50 and ≥2-grade IGA improvement compared with vehicle regardless of subtype. Among enrolled patients (TMB-001 0.05% [n=11], 0.1% [n=10], and vehicle [n=12]), 55% had ARCI and 45% XLRI subtypes.

In April 2022, the FDA granted fast track designation to TMB-001 for the treatment of XLRI and ARCI-LI.

In May 2022, the FDA granted breakthrough therapy designation to TMB-001 for the treatment of CI.

In June 2022, the Korean Intellectual Property Office issued a patent covering TMB-001 Korean Patent Number: 10-2406880. Additional patents are pending for TMB-001 in TSC withoutseveral other countries.

On June 30, 2022, we received a notice of allowance from the systemic absorptionUnited States Patent and Trademark Office for a patent application covering TMB-001 (Application Number: 16/875,710) covering claims to the uses and methods of an oral agent.treating congenital ichthyosis and administering isotretinoin.

In July 2022, we filed a U.S. continuation patent application covering claims to additional subject matter for TMB-001.

In October 2022,  the European Commission granted orphan designation for TMB-001 for the treatment of ARCI. The European Medicines Agency (the “EMA”) Pediatric Committee also provided positive comments on the Pediatric Investigation Plan for the treatment of ARCI and XLRI. We plan to respond to the Pediatric Committee and expect a final discussion in the second quarter of 2023, which is a prerequisite for filing a Marketing Authorization Application with the EMA.

In February 2023, the European Commission granted orphan drug designation for TMB-001 for the treatment of  XLRI.

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In March 2023, a sub-analysis of the Phase 2b CONTROL study was published online in Clinical and Experimental Dermatology (“CED”), the educational journal of the British Association of Dermatologists. The sub-analysis was designed to assess whether the efficacy and safety of TMB-001 differed between subjects with ARCI and XLRI. Results show that treatment with TMB-001 demonstrated greater proportions of participants achieving the primary and key secondary endpoints versus vehicle regardless of the subtype of CI.

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TMB-003

The earliest stage product in our pipeline is TMB-003, a proprietary formulation of sitaxsentan,Sitaxsentan, a new chemical entity in the U.S., which is a selective endothelin-A receptor antagonist,antagonist. It is currently in preclinical development as a locally applied formulation for the treatment of scleroderma,sclerotic skin diseases. The two disease areas under consideration include Lichen Sclerosis a rare chronic disease of vulvae and perianal areas, and Localized Scleroderma, a chromic connective tissue disorder characterized by abnormal thickeningdisease that also affects other organ systems.

On January 12, 2021, we announced that the FDA has granted orphan drug designation for TMB-003, our locally delivered formulation of Sitaxsentan, for the skin.treatment of systemic sclerosis. We are planning to pursue additional orphan drug designations in other indications in the future.

BPX-01 and BPX-04

In connection with the Merger (as defined below),merger with BioPharmX Corporation on May 18, 2020, we acquired the BPX-01 and BPX-04 assets. BPX-01 is a Phase 3 ready topical minocycline for the treatment of inflammatory lesions of acne vulgaris, andvulgaris. BPX-04 is a Phase 3 ready topical minocycline for the treatment of papulopustular rosacea. We will seek to monetize these assets through a license, co-development, or sale.

On May 18, 2020, BioPharmX Corporation (“BioPharmX”) completed its business combination with Timber Pharmaceuticals LLC, a Delaware limited liability company (“Timber Sub”), in accordance with the terms of the Agreement and Plan of Merger and Reorganization, dated as of January 28, 2020 (the “Merger Agreement”), by and among BioPharmX, Timber Sub and BITI Merger, Inc., a Delaware corporation and wholly-owned subsidiary of the Company (“Merger Sub”), as amended by Amendment No. 1 thereto made and entered into as of March 24, 2020 (the “First Amendment”) and Amendment No. 2 thereto made and entered into as of April 27, 2020 (the “Second Amendment”) (the Merger Agreement, as amended by the First Amendment and the Second Amendment, the “Amended Merger Agreement”), pursuant to which Merger Sub merged with and into Timber Sub, with Timber Sub surviving as a wholly-owned subsidiary of the Company (the “Merger”). In connection with, and immediately prior to the completion of, the Merger, BioPharmX effected a reverse stock split of the Company’s common stock, par value $0.001 per share (the “Common Stock”), at a ratio of 1-for-12 (the “Reverse Stock Split”). Immediately after completion of the Merger, BioPharmX changed its name to “Timber Pharmaceuticals, Inc.” and the officers and directors of Timber Sub became the officers and directors of the Company.

Under the terms of the Amended Merger Agreement, BioPharmX issued shares of Common Stock to the holders of common units of Timber Sub. Immediately after the Merger, there were approximately 11,849,031 shares of Common Stock outstanding (after the Reverse Stock Split). Pursuant to the terms of the Amended Merger Agreement, the former holders of common units of Timber Sub (including the Investors, as defined below, but excluding VARs, as defined below) owned in the aggregate approximately 88.5% of the outstanding Common Stock, with the Company’s stockholders immediately prior to the Merger owning approximately 11.5% of the outstanding Common Stock. The number of shares of Common Stock issued to the holders of common units of Timber Sub for each common unit of Timber Sub outstanding immediately prior to the Merger was calculated using an exchange ratio of approximately 629.57 shares of Common Stock for each Timber Sub unit. In addition, the 584 Value Appreciation Rights of Timber Sub (“VARs”) that were outstanding immediately prior to Merger became denoted and payable in 367,670 shares of Common Stock at the effective time of the Merger (the “Effective Time”). Further, the holder of the 1,819,289 preferred units of Timber Sub outstanding immediately prior to the Merger received 1,819 shares of the newly created convertible Series A preferred stock (the “Series A Preferred Stock”) at the Effective Time.

In connection with the Merger Agreement, on March 27, 2020, Timber Sub and BioPharmX entered into a securities purchase agreement (the “Securities Purchase Agreement”), with certain accredited investors (the “Investors”) pursuant to which, among other things, we issued to the Investors shares of Timber Sub units immediately prior to the Merger and BioPharmX issued to the Investors warrants to purchase shares of BioPharmX common stock on the tenth trading day following the consummation of the Merger (the “Investor Warrants”) in a private placement transaction for an aggregate purchase price of approximately $25 million (which amount is comprised of (x) approximately $5 million credit with respect to the senior secured promissory notes (the “Bridge Notes”) issued in connection with the bridge loan that certain of the Investors at the time of the execution of the Merger Agreement and (y) $20 million in cash from the Investors) (the “Purchase Price���). We issued to the Investors 8,384,764 Series A Warrants to purchase shares of Common Stock (“Series A Warrants”) and 7,042,175 Series B Warrants to purchase shares of Common Stock (“Series B Warrants”). At the time of issuance, the Series A Warrants had a 5-year term and an exercise price of $2.7953, subject to the number of shares and exercise price being reset based on our stock price after the Merger. The Series B Warrants had an exercise price per share of $0.001, were exercisable upon issuance and were initially convertible into 7,042,175 shares of Common Stock in the aggregate. The number of shares of Common Stock issuable pursuant to the Series B Warrants was also subject to adjustment based on specified reset prices.

In addition, pursuant to the terms of the Securities Purchase Agreement, on May 22, 2020 we issued to the Investors warrants to purchase 413,751 shares of Common Stock (the “Bridge Warrants”) which have an exercise price of $2.2362 per share.

On November 19, 2020, the Company entered into a Warrant Waiver Agreement with each of the Warrant holders which modified the terms of the original agreement and eliminated further resets. The aggregate number of Series A Warrants issued was fixed at 20,178,214 and the warrant exercise price was fixed at $1.16. The aggregate number of Series B Warrants was fixed at 22,766,777. The exercise price of the Series B Warrants remained unchanged.  

In addition, certain restrictions contained in the Warrant Agreement and Securities Purchase Agreement were modified including restrictions on the Company’s ability to issue additional equity securities in connection with a financing and the Company’s ability to complete a fundamental transaction. Subject to certain restrictions detailed in the Warrant Waiver Agreement, the Company is now able to complete an equity financing or a fundamental transaction at any time after April 30, 2021.

Further, in connection with the Warrant Waiver Agreement the Company agreed to immediately register 11,383,389 shares of common stock issuable upon exercise of the Series B Warrants. The Warrant holders have additional demand registration rights as described in the Warrant Waiver Agreement. As of March 4, 2021, the Series B Warrants were exercised in full. As of March 15, 2021, 16,701,824 shares of common stock remain issuable upon exercise of the Series A Warrants.

We have a limited operating history as the Company was formed on February 26, 2019. Since inception, our operations have focused on establishing its intellectual property portfolio, including acquiring rights to the proprietary formulations of isotretinoin, rapamycin and sitaxsentan, as described above, organizing and staffing the Company, business planning, raising capital, and conducting clinical trials. Since inception, we have financed our operations with $18.9 million through capital contributions

Since inception, we have incurred significant operating losses. For the period from February 26, 2019 (inception) to December 31, 2020, our net loss was $18.2 million. As of December 31, 2020, we had an accumulated deficit of $18.2 million. We expect to continue to incur significant expenses and operating losses for the foreseeable future. We anticipate that our expenses will increase significantly in connection with our ongoing activities, as we continue to develop the pipeline of programs.

Recent Developments

On July 1, 2020, we announced that all 11 sites across the United States and Australia in the Phase 2b CONTROL study evaluating TMB-001 in patients with moderate to severe CI are currently enrolling patients. As of December 31, 2020, all sites participating in a Phase 2b clinical trial evaluating TMB-002 were opened and are currently enrolling patients. On March 15, 2021, we announced that 50% of patients in the Phase 2b clinical trial have been enrolled.

Pursuant to the Amended Merger Agreement, BPX-01 (Topical Minocycline, 2%) and BPX-04 (Topical Minocycline, 1%) were added to the Timber portfolio. BPX-01 and BPX-04 are assets currently in development for acne vulgaris and papulopustular rosacea, respectively. On July 22, 2020, we announced that we had received notice from the European Patent Office that it intends to grant a patent for the Company’s topical composition of pharmaceutical tetracycline (including minocycline) for dermatological use (European Patent Application No. 16714168.8) and the application subsequently issued on December 16, 2020 as EP 3273940. Patents covering the BPX-01 and BPX-04 assets have previously been granted in the United States, South Africa and Australia, among other countries. We are currently evaluating our strategic options regarding these assets.

On September 15, 2020, we announced that we had received a notice of allowance from the U.S. Patent and Trademark Office (USPTO)(“USPTO”) for a Company patent application

covering BPX-01 and BPX-04 our pharmaceutical tetracycline (including minocycline) compositions for dermatological use (U.S. Patent Application No.: 16/514,459) and the application subsequently issued on January 5, 2021, as USU.S. 10,881,672.

On December 15, 2020, we announced that we had received a notice of allowance from the USPTO for a Company patent application covering TMB-001, our pharmaceutical isotretinoin composition (U.S. Patent Application No.: 15/772,456) and the application subsequently issued on February 10, 2021 as US 10,933,018.

On January 12, 2021, we announced that the FDA has granted orphan drug designation for TMB-003, our locally delivered formulation of sitaxsentan, for the treatment of systemic sclerosis.

On January 25, 2021, we announced the appointment of Alan Mendelsohn, M.D., as Chief Medical Officer. Dr. Mendelsohn assumed the roles and responsibilities of Amir Tavakkol, Ph.D., who stepped down as our Chief Scientific Officer.

On March 17, 2021, we announced that AFT Pharmaceuticals Limited (“AFT”), one of our development partners, entered into We are seeking to monetize these assets through a license, and supply agreement with Desitin Arzneimittel GmbH (“Desitin”) for Pascomer® (TMB-002 topical rapamycin) for the treatment of FAs associated with TSC in Europe. Pursuant to the AFT Licensing and Development Agreement (as defined below), we are entitled to receive a significant percentage of the economics (royalties and milestones) in any licensing transaction that AFT executes outside of North America, Australia, New Zealand, and Southeast Asia. The current transaction with Desitin is included in the scope of this provision.co-development, or sale.

Material Agreements

Asset Purchase Agreements with Patagonia Pharmaceuticals LLC (“Patagonia”)

TMB-001

On February 28, 2019, we acquired the intellectual property rights for a topical formulation of isotretinoin for the treatment of CI and identified as TMB-001, formerly PAT-001 including the IPEG^TM brand, from Patagonia (the “TMB-001 Acquisition”).which we refer to as the TMB-001 Acquisition, pursuant to the Asset Acquisition Agreement. Zachary Rome, a former member of our board of directors and our former Executive Vice-President and Chief Operating Officer serves as President of Patagonia and also maintains an ownership interest therein.

Under the terms of the TMB-001 Acquisition, we paid a one-time upfront payment of $50,000 to Patagonia. Patagonia is entitled to up to $27.0 million of cash milestone payments relating to certain regulatory and commercial achievements of the TMB-001 Acquisition, with the first being $4.0 million from the initiation of a Phase 3 pivotal trial, as agreed with the FDA. FDA and defined as the first patient enrolled in such trial for the product. The next milestone payments relate to (i) a one-time payment of $7.0 million upon FDA approval of an NDA related to the product for the treatment of CI, or a substantially similar indication, and (ii) a one-time payment of $2.0 million upon EMA approval of an MMA related to the product for the treatment of CI, or a substantially similar indication.In addition, Patagonia is entitled to net sales earn-out payments ranging from low single digits to mid-double digits for the program licensed. We are responsible for all development activities under the license.agreement. The first regulatory and commercial milestone occurred in June 2022, as the first patient enrolled in the Phase 3 pivotal trial for the product and as such a $4.0 million milestone payment was accrued at June 30, 2022. There were no further milestone payments accrued at December 31, 2022, because the potential regulatory and commercial milestones arewere not yet considered probable.

On July 20, 2022, we entered into the Amendment to the Asset Acquisition Agreement with Patagonia, pursuant to which we and noPatagonia extended the time for our payment of the first milestone payment, which became payable in the third quarter of 2022 upon the commencement of patient enrollment in our Phase 3 ASCEND clinical trial in the second quarter of 2022. The first milestone payment became payable by us in two tranches, with $2.25 million due by September 1, 2022, and $2.065 million due by September 1, 2023. The first milestone payment was made on September 1, 2022. We are  accreting interest on the second tranche. The interest is recorded in our Consolidated Statement of Operations and Comprehensive Loss.  In addition to the remedies for breach under the Asset Acquisition Agreement, including reversion under certain circumstances, we granted Patagonia a security interest in TMB-001 and certain other assets until the second milestone payment has been paid in full. Because the milestone payments have been accrued at December 31, 2020.due upon the achievement of certain events would be payable prior to the time in which we are able to generate revenue, such obligations under the Asset Acquisition Agreement, as amended, may impact the economic viability of developing and marketing TMB-001.

TMB-003

On June 26, 2019, we acquired the intellectual property rights for a locally administered formulation of sitaxsentanSitaxsentan for the treatment of cutaneous fibrosis and/or pigmentation disorders, and identified as TMB-003, formerly PAT-S03, from Patagonia (the “TMB-003 Acquisition”).

Upon closing of the TMB-003 Acquisition, we paid a one-time upfront payment of $20,000 to Patagonia. Patagonia is entitled to up to $10.25 million of cash milestone payments subject to adjustments relating to certain regulatory and commercial achievements of the TMB-003, License, with the first being a one-time payment of $250,000 upon the opening of an INDinvestigational new drug (“IND”) with the FDA. In addition, Patagonia is entitled to net sales earn-out payments ranging from low to mid-single digits for the program licensed. We are responsible for all development activities under the license.agreement. The potential regulatory and commercial milestones are not yet considered probable, and no milestone

payments have been accrued at December 31, 2020.2022 or 2021, respectively.  Because the milestone payments due upon the achievement of certain events would be payable prior to the time in which we are able to generate revenue, such obligations under the agreement may impact the economic viability of developing and marketing TMB-003.

Acquisition and Termination of License from AFT Pharmaceuticals Limited (“AFT”)

On July 5, 2019, we entered into a license agreement with AFT which providesprovided us with (i) an exclusive license to certain licensed patents, licensed know-how and AFT trademarks to commercialize a proprietary topical formulation of rapamycin marketed under the Pascomer® productbrand name Pascomer (“Pascomer”) in the United States, Canada and Mexico and (2)(ii) a co-exclusive license to develop the Pascomer product in this territory. Concurrently, we granted to AFT an exclusive license to commercialize the Pascomer product outside of its territory and co-exclusive sublicense to develop and manufacture the licensed product for commercialization outside of its territory (the “AFT License Agreement”).

TheOn July 22, 2022, we provided written notice to AFT of our decision to terminate the AFT License Agreement also provides for the formation ofbecause we believed there was no longer a joint steering committeecommercially reasonable path to oversee, coordinate and review recommendations and approve decisions in respect of the matters related to the developmentapproval and commercialization of the Pascomer product, in which both the Company and AFT have the right to appoint two members. The committee is currently comprised of three members. We have final decision-making authority on all matters relating to the commercialization offor the Pascomer product in the specified territoryUnited States. Additionally, following the receipt and on all matters related toanalysis of topline data for the development (and regulatory approval) of the Pascomer product, with certain exceptions.

The development of the Pascomer product is being conducted pursuant to a written development plan, written by AFT and approved by the joint steering committee, which is reviewed on at least an annual basis. AFT shall perform clinical trials of the Pascomer productPhase II Clinical Trial (as defined in the specified territory and shall perform all CMC (chemistry, manufacturing and controls) and related activities to support regulatory approval. We are responsible for all expenses incurred by AFT during the term of the AFT License Agreement and shall equally share all costs and expenses with AFT, incurred by AFT for development and marketing work performed in furtherance of regulatory approval and commercialization worldwide, outside ofAgreement) it was determined that the specified territory. We are also entitledstudy failed to receive a significant percentage of the economics (royalties and milestones) in any licensing transaction that AFT executes outside of North America, Australia, New Zealand, and Southeast Asia.

Upon closing ofmeet its primary efficacy endpoint. Under the AFT License Agreement, we were obligatedrequired to reimburseprovide 120 days’ prior written notice of termination to AFT forwhich was waived by AFT on July 25, 2022 (the “Termination Date”). On the Termination Date, the rights and licenses to Pascomer reverted to AFT, among other things, as set forth in the AFT License Agreement.

Letter Agreement with TardiMed Sciences LLC (“TardiMed”)

We previously spent development costs,had shares of Series A Preferred Stock outstanding as to which the holder, TardiMed, had demanded redemption. Michael Derby, our former Chief Executive Officer and former Chairman of our board of directors is the Managing Member of TardiMed. The redemption price was equal to approximately $2.1 million in the aggregate, at December 31, 2021, including accumulated and unpaid dividends which accrue at the rate of 8% per annum.  Redemption was subject to certain limitations and were obligatedunder Delaware corporate law due to payour financial condition.  As a one-time, irrevocable and non-creditable upfront payment to AFT, payable in scheduled installments. AFT is entitled to up to $25.5 million of cash milestone payments relating to certain regulatory and commercial achievementsresult of the AFT License. In addition, AFT is entitled to net sales royalties ranging from high single digits to low double digitscall for redemption, the program licensed. The potential regulatory and commercial milestones are not yet considered probable, and no milestone payments haveSeries A Preferred Stock had been accruedreclassified as a liability at December 31, 2020.2021. Dividends continued to accrue and were recorded as non-cash interest expense in the Statement of Operations and Comprehensive Loss rather than to additional-paid-in-capital in 2022.

On July 27, 2022, we entered into a letter agreement with TardiMed (the “Letter Agreement”) pursuant to which TardiMed agreed to exchange its 1,819 shares of Series A Preferred Stock plus accrued dividends for a pre-funded warrant to purchase 181,083 shares of common stock (the “TardiMed Warrant”). The number of shares underlying the TardiMed Warrant was based on the redemption price of the Series A Preferred Stock (which had been demanded by TardiMed) divided by $11.95, the last closing price of the common stock prior to the date the Letter Agreement was executed.

CompetitionTwenty percent of the TardiMed Warrant was immediately exercisable upon issuance. Beginning on September 30, 2022, and then at the end of each subsequent calendar quarter upon written request of TardiMed, we have agreed to allow an additional 20% of the initial balance of the TardiMed Warrant to become exercisable, provided that only 20% of the initial balance of the TardiMed Warrant will be exercisable in any given quarter. The TardiMed Warrant’s exercise price is $0.005 and may be exercised on a cashless basis. The TardiMed Warrant will terminate when exercised in full. As of March 25, 2023, 60% of the TardiMed Warrant has been exercised on a cashless basis and an aggregate of 108,476 shares of common stock have been issued to TardiMed.

Offerings

November 2021 Offering

On November 2, 2021, we entered into an underwriting agreement with H.C. Wainwright & Co., LLC

(“Wainwright”), as representative of the several underwriters named in Schedule I thereto, relating to the public

offering, issuance and sale of shares of our common stock and, to certain investors, pre-funded warrants to purchase shares of common stock, and accompanying warrants to purchase shares of our common stock. After giving effect to the sale of additional shares pursuant to the exercise of the option by Wainwright that closed on November 9, 2021, the total number of shares of common stock (or common stock equivalents) sold by us in the offering was 539,063, together with warrants to purchase up to 539,063 shares of common stock (the “November Warrants”) issued at the closing on November 5, 2021, for total gross proceeds of $17.25 million before deducting underwriting discounts and commissions and other offering expenses, and net proceeds of approximately $15.8 million.

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Each share of common stock and pre-funded warrant to purchase one share of common stock was sold together with a

warrant to purchase one share of common stock. All the securities sold in the offering were sold by us. The public offering price of each share of common stock and accompanying the November Warrant was $32.00 and $31.95 for each pre-funded warrant and accompanying November Warrant. The pre-funded warrants were immediately exercisable at a price of $0.05 per share of common stock and were exercised in full on November 5, 2021. The November Warrants were immediately exercisable at a price of $35.00 per share of common stock and expire five years from the date of issuance.  No November Warrants have been exercised as of December 31, 2022.

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August 2022 Offering

On March 1, 2022, we entered into an engagement agreement, as subsequently amended on June 30, 2022 (the “Engagement Agreement”), with Wainwright, pursuant to which Wainwright agreed to act as the exclusive placement agent on a reasonable best efforts basis in connection with a public offering of common stock.

On August 4, 2022, we announced the pricing of the public offering (the “August 2022 Offering”) of (i) 931,667 shares of common stock, (ii) pre-funded warrants to purchase up to an aggregate of 401,667 shares of common stock and (iii) common warrants to purchase up to an aggregate of 1,333,333 shares of common stock (the “August Warrants”). Each share of common stock and pre-funded warrant to purchase one share of common stock was sold together with an August Warrant to purchase one share of common stock. All of the securities sold in the August 2022 Offering were sold by us. The public offering price of each share of common stock and accompanying August Warrant was $6.00 and $5.995 for each pre-funded warrant and accompanying August Warrant. The pre-funded warrants were immediately exercisable at a price of $0.005 per share of common stock and were exercisable at any time until all of the pre-funded warrants were exercised in full. The August Warrants are immediately exercisable at a price of $6.00 per share of common stock and will expire five years from the date of issuance. The shares of common stock and pre-funded warrants, and the accompanying August Warrants, were issued separately and were immediately separable upon issuance. The August 2022 Offering closed on August 8, 2022. All of the pre-funded Warrants were exercised, and none remain outstanding at December 31, 2022.

In connection with the August 2022 Offering, on August 4, 2022, we entered into securities purchase agreements (the “August Purchase Agreements”) with certain institutional investors in the August 2022 Offering. The net proceeds to us from the August 2022 Offering were approximately $6.9 million, after deducting placement agent fees and expenses and estimated offering expenses payable by us, excluding the proceeds, if any, from the exercise of the August Warrants. We intend to use the net proceeds from the August 2022 Offering for research and development, including clinical trials, working capital and general corporate purposes. As of December 31, 2022, 1,309,333 shares of common stock remain issuable upon the exercise of the August Warrants.

October 2022 Offering

On October 3, 2022, we entered into a Securities Purchase Agreement (the “October Purchase Agreement”) with several institutional accredited investors (the “October Investors”) to sell, in a registered direct offering (the “Registered Offering”) (i) 260,000 shares of common stock, and (ii) Series 1 common warrants (the “Series 1 Warrants”) to purchase up to an aggregate of 260,000 shares of common stock (the “Series 1 Warrant Shares”). The Series 1 Warrants are immediately exercisable at an exercise price of $5.00 per share and will expire two and one-half years following the initial exercise date. The October Purchase Agreement contains customary representations and warranties and agreements of us and the October Investors, and customary indemnification rights and obligations of the parties. Total gross proceeds from

the Registered Offering, before deducting the placement agent’s fees and other estimated offering expenses, was $1.3 million. The Registered Offering closed on October 3, 2022.

In a concurrent private placement (the “Concurrent Private Placement Offering” and, together with the Registered Offering, the “October 2022 Offerings”) we also agreed to issue (i) Series 2 common warrants (the “Series 2 Warrants”) to purchase up to an aggregate of 260,000 shares of underlying common stock (the “Series 2 Warrant Shares”), and (ii) 13,000 shares of Series B Mirroring Preferred Stock (the “Series B Preferred Stock”).

Each share of Series B Preferred Stock had a stated value of $0.001 per share. The Series B Preferred Stock had super voting rights on the approval of the 2022 Reverse Stock Split (as defined below) equal to 10,000,000 votes per share of Series B Preferred Stock. The voting rights of the Series B Preferred Stock were established in order to maintain our NYSE American listing by raising the average minimum bid price of the common stock to over $0.20 for 30 consecutive trading days. Upon the effectiveness of the Certificate of Amendment (as defined below), the outstanding shares of Series B Preferred Stock were automatically transferred to us and cancelled for no consideration with no action on behalf of the holders thereof and such shares resumed the status of authorized but unissued shares of preferred stock and were no longer designated as shares of Series B Stock.

The Series 2 Warrants are exercisable on the date six (6) months following the date of issuance at an exercise price of $6.00 per share and will expire two and one-half years following the initial exercise date. The Series B Preferred Stock was not, and the Series 2 Warrants and Series 2 Warrant Shares issuable upon exercise of the Series 2 Warrants have not been, registered under the Securities Act of 1933, as amended (the “Securities Act”), and were offered pursuant to the exemption provided in Section 4(a)(2) under the Securities Act and Rule 506(b) promulgated thereunder.

As compensation to Wainwright, as the exclusive placement agent in connection with the Registered Offering, we paid Wainwright a cash fee of 6% of the aggregate gross proceeds raised in the Registered Offering and reimbursed Wainwright for legal fees and expenses up to $40,000, non-accountable expenses of $25,000 and $15,950 for clearing expenses. In connection with the October 2022 Offerings, we received net proceeds of approximately $1.0 million.  As of December 31, 2022, none of the Series 1 Warrants or Series 2 Warrants have been exercised.

2022 Reverse Stock Split

On November 7, 2022, we filed a Certificate of Amendment to our Certificate of Incorporation, as amended (the “Certificate of Amendment”), with the Secretary of State of the State of Delaware, which effected, at 5:00 p.m. Eastern Time on November 8, 2022, a reverse stock split of our issued and outstanding shares of common stock at a ratio of one-for-fifty, which we refer to as the 2022 Reverse Stock Split. The 2022 Reverse Stock Split did not affect our authorized common stock of 450,000,000 shares. Proportionate adjustments were made to the conversion rate, the per share exercise price and the number of shares issuable upon the vesting, exercise or conversion of our outstanding derivative securities in accordance with the 2022 Reverse Stock Split ratio.

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As a result of the 2022 Reverse Stock Split, every fifty shares of common stock issued and outstanding were converted into one share of common stock. The 2022 Reverse Stock Split affected all stockholders uniformly and did not alter any stockholder’s percentage interest in our equity, except to the extent that the 2022 Reverse Stock Split would have resulted in some stockholders owning a fractional share. No fractional shares were issued in connection with the 2022 Reverse Stock Split. Stockholders who would otherwise have been entitled to a fractional share of common stock were instead entitled to receive a proportional cash payment.

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Sublease Agreement

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We currently lease an 11,793 square foot office and laboratory space at 115 Nicholson Lane, San Jose, California. This lease expires in December 2023. On February 17, 2020, we executed a sublease agreement covering the entire space for the remaining term of the lease. The current monthly rent at this location is $37,710, which includes common area maintenance charges.  The sublessee unexpectedly ceased making sublease payments in the fourth quarter of 2022 due

substantial financial difficulties. We have been working with the owner of the property to market the location. The sublessee has been found to have made multiple alterations to the location without permits or the lessor’s approval and we have received an estimate for repairs to the existing space and costs to clean the location that will approximate $150,000. This amount is recorded in accrued expenses at December 31, 2022, as an asset retirement obligation.

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Background of Topical Isotretinoin (TMB-001)

We are aware of several companies that are working to develop drugs that would compete againstdeveloping a treatment for CI with our product candidates, suchTMB-001, a topical isotretinoin ointment. CI is a large, heterogeneous family of inherited skin disorders of cornification resulting from an abnormality of skin keratinization. The main features of the disorder are scaling and often thickening of the skin.

TMB-001 leverages our patented IPEG™ delivery system. This technology was developed to topically deliver active pharmaceutical ingredients for which a precise cutaneous distribution is essential. The IPEG™ platform utilizes specific ratios of different molecular weight polyethylene glycols to target specific dermal delivery profiles. TMB-001 was designed to maximize delivery of isotretinoin into the pathologic layers of skin while minimizing any systemic absorption.

Completed Phase 2a Multicenter, POC Study

The pilot Phase 2a multicenter, proof-of-concept study of topically applied 0.1% and 0.2% isotretinoin ointment, or TMB-001, in 19 subjects 12 years and older with CI of either the ARCI or XLRI subtypes was completed in 2018. Of the 19 subjects enrolled, 10 were randomized at baseline to the TMB-001, 0.1% Treatment Group, and 9 were randomized to TMB-001, 0.2%. In total, 12 subjects (12/19, 63.2%) completed the study and 7 subjects (7/19, 36.8%) discontinued early. Subjects who did not complete the study discontinued due to an adverse event, lost to follow-up, or withdrawal by the subject.

The primary objective of the Phase 2a study was to assess the safety and tolerability of topical TMB-001. Safety was assessed based on the incidence (severity and causality) of any local and systemic adverse events (AEs); number of subjects with presence (and severity) of each individual local skin reaction (LSR): stinging/burning, pain, and pruritus, collected at each time point for each Treatment Area; vital signs at Days 29, 57, and 84; and clinical laboratory tests (hematology, chemistry, and urinalysis) at Days 29, 57, and 84. 28 treatment-emergent adverse events (“TEAEs”) were reported in 14 (out of 19) subjects (seven out of ten for TMB-001 0.1% and 7/9 for TMB-001 0.2%). The most common TEAEs were in the General disorders and Administration Site Conditions System Organ Class (four out of ten for TMB-001 0.1% and three out of nine for TMB-001 0.2%), namely application site pruritus, application site irritation, and application site dermatitis. The majority of TEAEs were mild and deemed not related to test article in both groups. Of the 8 subjects with TEAEs that were possibly, probably, or definitely related to treatment (e.g., application site rash, application site irritation, dermatitis contact, application site dermatitis, application site pruritus, application site folliculitis, application site pain), all had interruptions or withdrawal of the study drug. Overall, the majority of burning/stinging, pain, and pruritus local skin reactions (“LSRs”) was mild or moderate for both Treatment Areas in the 0.1% and 0.2% groups with somewhat greater directional severity in the 0.2% group. In Part 1 for both treatment groups, there was a modest increase over time in LSRs in the Treatment Area that received Active compared with the Treatment Area that received vehicle, particularly for pruritus. In Part 2, subjects who continued to apply active test article did not generally have increased LSRs, however, there was a modest increase in the proportion of subjects that received vehicle in Part 1 who reported pruritus at Day 84 in both treatment groups. Reports of severe LSRs were low, but slightly higher in the areas that were treated with Active for 12 weeks. Pruritus was the most commonly reported LSR at Baseline and post-Baseline visits. In the 0.2% group, one subject had a serious adverse event (“SAE”), namely severe mental status change and 2 TEAEs (moderate gastroenteritis norovirus and moderate Clostridium difficile colitis) that led to study discontinuation but recovered/resolved by end of study and the adverse events were all deemed not related to test article. There were no clinically significant changes from Baseline in laboratory test results and vital signs to end of study (“EOS”) laboratory test results and vital signs, save for the one subject who discontinued due to an SAE (deemed unrelated to test article; mental status change due to acute encephalopathy, most likely secondary to the side effects of multiple medications with sedative side effects) and had an increase in blood triglycerides that were deemed clinically significant at the end of the study.

available in published literature. The PK of isotretinoin following systemic administration have been well characterized. Absorption tends to be fairly rapid with high distribution to the liver. Transplacental distribution of isotretinoin has been established in all nonclinical species.

The repeat-dose toxicity and local tolerance of TMB-001 Ointment have been evaluated in minipigs, bovine cornea, guinea pigs, and rabbits using formulation PATPO3 AN. Topical application of the formulated product (ranging from 0.05% to 0.2%) in minipigs for lamellar ichthyosis, Krystal Biotech, Inc.90 days produced changes at the site of application only including irritation and microscopic alterations. The severity increased with increasing concentration. These types of dermal changes are consistent with those observed in patients administered a topical formulation of isotretinoin. TMB-001 Ointment did not produce serious eye damage, sensitization in guinea pigs, or phototoxicity in rabbits. As noted previously, the formulation used in the toxicity studies (PATPO3 AN) is different than the one selected for clinical development (PATPO3 ANR). The toxicity profile of isotretinoin administered via oral or other systemic routes of dosing is well characterized. Of particular concern from a safety perspective is its teratogenicity. It is important to differentiate the toxicity of isotretinoin observed following systemic (oral) dosing with that noted following topical administration. The pre-clinical data demonstrates that the low exposures to isotretinoin achieved with TMB-001 Ointment correlate with no adverse systemic effects. In comparison, the toxicity reported in the literature following oral administration, including teratogenicity, is associated with markedly higher exposures. Overall, there are no new or unique toxicities observed in animals treated with TMB-001 Ointment, 0.2%. The observations are consistent with the effects of isotretinoin.

Completed Phase 2b CONTROL Study

We initiated a Phase 2b randomized, parallel, double-blind, vehicle-controlled study in December 2019. The purpose of this study was to investigate the efficacy and safety of two concentrations of topically applied TMB-001 in subjects nine years of age and older. Patients had clinical diagnosis of CI and a genetic confirmation of either ARCI-LI (e.g., transglutaminase 1-deficient) or XLRI (e.g., deletion of steroid sulfatase gene) subtypes of CI. Patients had, at baseline, an affected body surface area between a minimum of 10% and maximum of 90% that was treated.

We have analyzed the primary endpoint using a validated tool called the Visual Index of Ichthyosis Severity or VIIS that has been shared with the FDA. Common tools used to measure CI severity have either not been validated or if validated have used a very limited number of subjects and few expert graders.

The VIIS is a tool validated and published by Yale researchers for scaling and erythema. It provides detailed written descriptions for both features based on the level of severity, visual standards for 4 body sites (upper back, upper arm, lower leg/shin, and dorsal foot) in CI patients, with two distinct standards that account for different types of scale. Based on the high concordance between expert graders for the scaling score during the VIIS validation process, the primary efficacy endpoint for the proposed Phase 2b study is the change in VIIS scaling score relative to Baseline. The proportion of subjects with treatment success (VIIS-50) is defined as a 50% or greater decrease in the VIIS scaling score relative to baseline at the end of study calculated in patients that have a baseline score of 3 or higher. These patients represent moderate to severe disease phenotype.

On July 1, 2020, we announced that all 11 sites across the United States and Australia in the Phase 2b CONTROL study evaluating TMB-001 in patients with moderate to severe CI were enrolling patients. As of December 31, 2020, all sites participating in a Phase 2b clinical trial evaluating TMB-001 were opened and enrolling patients. On May 31, 2021, we completed patient enrollment in the Phase 2b clinical trial with 34 patients randomized. On October 7, 2021, we announced top-line data from the TMB-001 Phase 2b trial. The data demonstrated a reduction in targeted and overall severity of CI in patients treated with topical IPEG™ TMB-001 (topical isotretinoin). Top-line results including descriptive statistics are described below:

The key characteristics of the study that we designed included measuring the efficacy of TMB-001 on two scales, the VIIS and the IGA. The VIIS assessed improvements in well-defined, affected areas to allow unambiguous dose selection for the pivotal Phase 3 trial(s) and the IGA provided a broader perspective of the disease severity and therapeutic response. Given the FDA’s historical interest in IGA, and in agreement the FDA, we also used IGA as key secondary endpoint to determine overall diseases severity at baseline, throughout the study and at the end of the study visit.  IGA scores were dichotomized to “treatment success” or “treatment failure” where “treatment success” was defined as at least a 2-grade decrease in severity score relative to baseline at the end of study.  The VIIS areas were included in IGA assessment so that concordance between the two end points resulted in further validation of VIIS to be used uniquely in Phase 3 with the added knowledge of its fidelity and reproducibility.

Another key aspect of the Phase 2b study was that emollients and keratolytics were not allowed in the VIIS area, or any other area where the subject was applying the study drug. This could be accomplished because TMB-001 has demonstrated good skin occlusion, hydration and lubrication so that patients did not find the need to use other emollients in the treated areas during the study. This was important as the use of these agents can confound the results

In addition, we intend to generate additional preliminary data to assess the impact of TMB-001 treatment on quality of life of CI patients and generate preliminary data to support clinical meaningfulness of TMB-001 in the lives of CI patients. To that end, an age-appropriate Dermatology Quality of Life Index (“DLQI”), which is developinga dermatology-specific Quality of Life instrument will be used. Itch is a prominent feature in CI patients, so additionally pruritus was assessed with a self-administered Patient Reported Outcome questionnaire using the I-Numerical Rating Scale at various visits.

In March 2022, a third party presented a late-breaking presentation of a sub-analysis of our Phase 2b CONTROL study that evaluated TMB-001 at the American Academy of Dermatology 2022 Annual Meeting. The sub-type analysis found that TMB-001 0.05% demonstrated a substantially greater proportion of patients achieving VIIS-50 and ≥2-grade IGA improvement compared with vehicle regardless of subtype. Among enrolled patients (TMB-001 0.05% [n=11], 0.1% [n=10], and vehicle [n=12]), 55% had ARCI and 45% XLRI subtypes.

In March 2023, a sub-analysis of the Phase 2b CONTROL study was published online in CED. The sub-analysis was designed to assess whether the efficacy and safety of TMB-001 differed between subjects with ARCI and XLRI. Results show that treatment with TMB-001 demonstrated greater proportions of participants achieving the primary and key secondary endpoints versus vehicle regardless of the subtype of CI.

Phase 3 ASCEND Study

In June 2022, we initiated the Phase 3 ASCEND study. The ongoing ASCEND study will evaluate the efficacy, pharmacokinetics and safety of TMB-001 0.05%. The randomized, parallel, double-blind, vehicle-controlled ASCEND study is designed to enroll 142 participants 6 years of age or older with moderate to severe CI including XLRI and ARCI.

Participants in the ASCEND study are randomized 2:1 to TMB-001 or vehicle control ointment (two participants on TMB-001 for every one participant on vehicle) for 12 weeks, at which point eligible participants in both arms of the study are randomized again to either once-a-day or twice-a-day TMB-001 treatment for an additional 12 weeks to provide valuable information on longer term treatment with the compound. The primary endpoint is the comparison of proportions of subjects with a ≥2 point change from the baseline in IGA-scaling and fissuring scores in the treatment area at 12 weeks between TMB-001 0.05% and vehicle-treated subjects. Secondary endpoints include the reduction in overall ichthyosis severity. We expect to complete enrollment of the ASCEND study by September 2023 and to publish top-line data by May 2024.

Competitive Landscape

There are currently no approved topical isotretinoin products available in the United States. We are currently aware of one other program that is active in the CI space that may compete with the TMB-001 program.

The program in development is from Krystal Biotech, whose product KB105, is currently the subject of a Phase 2 clinical trial for transglutaminase-1 deficient autosomal recessive congenital ichthyosis,the treatment of TGM1-deficient ARCI. KB105 is a replication-incompetent, non-integrating HSV-1 vector expressing human transglutaminase 1 (TGM1) formulated as a topical gel. The Phase 2 clinical trial involves a randomized, placebo-controlled intra-patient parallel study. Up to 15 children or adults, aged 6 months and Nobelpharma Co., Ltd.older are planned for this Phase 2 study. The Phase 2 trial is expected to begin in March 2023 and Aucta Pharmaceuticals, Inc., whichfinish in April 2024.  As of March 2023, the trial was active but had not yet begun recruiting (NCT05735158). It is the belief of management that the TMB-001 program is significantly more advanced the KB105 program in terms of development timelines.  We believe that the TMB-001 program has additional key differentiators that we believe to be relevant including: a broader range of disease states being studied (Lamellar Ichthyosis including the TGM1 mutations but also other mutations and XLRI); a topical formulation versus gene therapy and a known mechanism of action in the disease.

Background of Locally Applied Sitaxsentan (TMB-003)

We are developing a treatment for scleroderma with our product TMB-003, locally applied Sitaxsentan. Scleroderma, also known as systemic sclerosis,  is a chronic connective tissue disease that is generally classified as one of the autoimmune rheumatic diseases.

In-Vitro, Preclinical Studies

Investigative studies of the effects of endothelin receptor selectivity on cutaneous fibrosis and pigmentation were completed in January 2018. Sitaxsentan is a highly selective (6,500:1) endothelin-A (“ET-A”) receptor antagonist developed for systemic use but never as a topical rapamycinagent. Bosentan is a dual endothelin-A / endothelin-B (“ET-B” and together with ET-A, “ET-A/ ET-B”) receptor antagonist developed and available for facial angiofibromassystemic use but not as a topical agent.

The endothelins, ET-1, ET-2 and ET-3, are a group of peptides that act on two distinct receptor subtypes, ET-A and ET-B. Of these three peptides, ET-1 has been the most studied. ET-1 stimulates cardiac contraction and the growth of cardiac muscle cells, regulates the release of substances that affect the blood vessels, stimulates smooth muscle cell division, and may control inflammatory responses by stimulating the production of pro-inflammatory cytokines.

In a series of studies, Sitaxsentan was found to have a significant effect on several important mechanisms of cutaneous fibrosis including its ability to reduce fibroblast migration, induce apoptosis, and reduce the amount of collagen produced. Further, Sitaxsentan outperformed Bosentan in tuberous sclerosis complex.several important mechanisms of cutaneous fibrosis. This is notable in the reduction of the amount of collagen produced in induced cells which can be compared back to un-induced controls. This suggests an inhibition in the development of a pro-fibrotic phenotype. Furthermore, enhanced apoptosis in a pro-fibrotic environment is likely beneficial, as resistance to apoptosis has been reported to be a characteristic of scleroderma fibroblasts. The results suggest that both drugs increase apoptosis compared to the control, whereby Sitaxsentan is more effective than Bosentan in stimulating apoptosis and the clearance of fibrosis-inducing cells. In both scratch assays,

Sitaxsentan was superior to Bosentan in preventing closure of the scratch, suggesting that hypermotility and proliferation, characteristic of scleroderma fibroblasts, could be reduced.

Sitaxsentan was also found to decrease the production of melanin, suggesting that it could be useful in treating hyperpigmentation. The effect of Sitaxsentan in in these studies suggest it could be a useful agent in addressing conditions of cutaneous fibrosis and hyperpigmentation through a selective targeting of the endothelin-A receptors.

Intellectual Property and Market Protection

Our commercial success depends in part on our ability to obtain and maintain proprietary protection for product candidates and any of our future product candidates, novel discoveries, product development technologies and know-how; to operate without infringing on the proprietary rights of others; and to prevent others from infringing our proprietary rights. Our policy is to seek to protect our proprietary position by, among other methods, filing or in-licensing U.S. and foreign patents and patent applications related to our proprietary technology, inventions and improvements that are important to the development and implementation of our business. We also rely on trademarks, trade secrets, know-how, continuing technological innovation, orphan drug exclusivity and potential in-licensing opportunities to develop and maintain our proprietary position.

As of December 31, 2020,2022, we own or have licensed rights to at least 28 patents or patent applications, including at least 6 U.S. patent applications, and at least 22 international patent applications. Our current patent applications related to our product candidates currently in development are projected to expire between 2036 and 2043, subject to any PTE that might be available in a particular jurisdiction.

While we seek broad coverage under our existing patent applications, there is always a risk that an alteration to the products or processes may provide sufficient basis for a competitor to avoid infringing our patent claims. In addition, patents, if granted, expire and we cannot provide any assurance that any patents will be issued from our pending or any future applications or that any potentially issued patents will adequately protect our products or product candidates.

Individual patents extend for varying periods depending on the date of filing of the patent application or the date of patent issuance and the legal term of patents in the countries in which they are obtained. Generally, patents issued for regularly filed applications in the United States are granted a term of 20 years from the earliest effective non-provisional filing date. In addition, in certain instances, a patent term can be extended to recapture a period due to delay by the USPTO in issuing the patent as well as a portion of the term effectively lost as a result of the FDA regulatory review period. However, as to the FDA component, the restoration period cannot be longer than five years and the total patent term including the restoration period must not exceed 14 years following FDA approval. The duration of foreign patents varies in accordance with provisions of applicable local law, but typically is also 20 years from the earliest effective non-provisional filing date. However, the actual protection afforded by a patent varies on a product-by-product basis, from country to country, and depends upon many factors, including the type of patent, the scope of its coverage, the availability of regulatory-related extensions, the availability of legal remedies in a particular country and the validity and enforceability of the patent.

Our commercial success will also depend in part on not infringing upon the proprietary rights of third parties. It is uncertain whether the issuance of any third-party patent would require us to alter our development or commercial strategies for our products or processes, or to obtain licenses or cease certain activities. Our breach of any license agreements or failure to obtain a license to proprietary rights that we may require to develop or commercialize our future products may have an adverse impact on us. If third parties prepare and file patent applications in the United States that also claim technology to which we have rights, we may have to participate in interference or derivation proceedings in the USPTO to determine priority of invention. For more information, please see “Risk Factors—Risks Related to Our Intellectual Property.”

Government Regulation and Product Approval

Government authorities in the United States, at the federal, state and local levels, and in other countries, extensively regulate, among other things, the research, development, testing, manufacture, packaging, storage, recordkeeping, labeling, advertising, promotion, distribution, marketing, import and export of pharmaceutical products, such as those we are developing. We, along with third-party contractors, will be required to navigate the various preclinical, clinical and marketing approval requirements of the governing regulatory agencies of the countries in which we wish to conduct studies or seek approval of our product candidates. The processes for obtaining regulatory approvals in the United States and in foreign countries, along with subsequent compliance with applicable statutes and regulations, require the expenditure of substantial time and financial resources.

United States Government Regulations

In the United States, the FDA regulates drugs under the FDCA and its implementing regulations. The process of obtaining regulatory approvals and the subsequent compliance with appropriate federal, state, local and foreign statutes and regulations requires the expenditure of substantial time and financial resources. Failure to comply with the applicable United States requirements at any time during the drug development process, approval process or after approval, may subject an applicant to a variety of administrative or judicial sanctions, such as the FDA’s refusal to approve pending new drug applications, or NDAs, withdrawal of an approval, imposition of a clinical hold, issuance of warning or untitled letters, product recalls, product seizures, total or partial suspension of production or distribution, injunctions, fines, refusals of government contracts, restitution, disgorgement or civil or criminal penalties.

The process required by the FDA before a drug may be marketed in the United States generally involves:

Preclinical Studies

Preclinical studies include laboratory evaluation of product chemistry, toxicity and formulation, as well as animal studies to assess potential safety and efficacy. An IND sponsor must submit the results of the nonclinical tests, together with manufacturing information, analytical data and any available clinical data or literature, among other things, to the FDA as part of an IND. Some nonclinical testing may continue even after the IND is submitted. An IND automatically becomes effective and a clinical trial proposed in the IND may begin 30 days after receipt by the FDA, unless before that time the FDA raises concerns or questions related to one or more proposed clinical trials and places the clinical trial on a clinical hold. In such a case, the IND sponsor and the FDA must resolve any outstanding concerns before the clinical trial can begin. As a result, submission of an IND may not result in the FDA allowing clinical trials to commence.

Clinical Trials

Clinical trials involve the administration of the investigational new drug to human subjects under the supervision of qualified investigators in accordance with GCP requirements, which include the requirement that all research subjects provide their informed consent in writing for their participation in any clinical trial. Clinical trials are conducted under protocols detailing, among other things, the objectives of the trial, the parameters to be used in monitoring safety and the effectiveness criteria to be evaluated. A protocol for each clinical trial and any subsequent protocol amendments must be submitted to the FDA as part of the IND. In addition, an IRB at each institution participating in the clinical trial must review and approve the plan for any clinical trial before it commences at that institution, and the IRB must continue to oversee the clinical trial while it is being conducted. Information about certain clinical trials must be submitted within specific timeframes to the National Institutes of Health, or NIH, for public dissemination on their ClinicalTrials.gov website.

Human clinical trials are typically conducted in three sequential phases, which may overlap or be combined. In Phase 1, the drug is initially introduced into healthy human subjects or patients with the target disease or condition and tested for safety, dosage tolerance, absorption, metabolism, distribution, excretion and, if possible, to gain an initial indication of its effectiveness. In Phase 2, the drug typically is administered to a limited patient population to identify possible adverse effects and safety risks, to preliminarily evaluate the efficacy of the product for specific targeted diseases and to determine dosage tolerance and optimal dosage. In Phase 3, the drug is administered to an expanded patient population, generally at geographically dispersed clinical trial sites, in well-controlled clinical trials to generate enough data to statistically evaluate the safety and efficacy of the product for approval, to establish the overall risk-benefit profile of the product and to provide adequate information for the labeling of the product.

In some cases, the FDA may condition approval of an NDA for a product candidate on the sponsor’s agreement to conduct additional clinical trials after NDA approval. In other cases, a sponsor may voluntarily conduct additional clinical trials post approval to gain more information about the drug. Such post approval trials are typically referred to as Phase 4 clinical trials.

Progress reports detailing the results of the clinical trials must be submitted, at least annually, to the FDA, and more frequently if serious adverse events occur. Phase 1, Phase 2 and Phase 3 clinical trials may not be completed successfully within any specified period, or at all. Furthermore, the FDA or the sponsor may suspend or terminate a clinical trial at any time on various grounds, including a finding that the research subjects are being exposed to an unacceptable health risk. Similarly, an IRB can suspend or terminate approval of a clinical trial at its institution if the clinical trial is not being conducted in accordance with the IRB’s requirements, or if the drug has been associated with unexpected serious harm to patients.

Concurrent with clinical trials, companies usually complete additional animal studies and must also develop additional information about the chemistry and physical characteristics of the product and finalize a process for manufacturing the product in commercial quantities in accordance with cGMP requirements. The manufacturing process must be capable of consistently producing quality batches of the product candidate and, among other things, the manufacturer must develop methods for testing the identity, strength, quality and purity of the final product. Additionally, appropriate packaging must be selected and tested and stability studies must be conducted to demonstrate that the product candidate does not undergo unacceptable deterioration over its shelf life.

Orphan Drug Pathway

Under the Orphan Drug Act, the FDA may grant orphan designation to a drug or biologic product intended to treat a rare disease or condition, which is generally a disease or condition that affects fewer than 200,000 individuals in the United States, or more than 200,000 individuals in the United States and for which there is no reasonable expectation that the cost of developing and making the product available in the United States for this type of disease or condition will be recovered from sales of the product in the United States. After the FDA grants orphan drug designation, the identity of the therapeutic agent and its potential orphan use are disclosed publicly by the FDA. Orphan drug designation does not convey any advantage in, or shorten the duration of, the regulatory review and approval process. Orphan drug designation entitles a party to financial incentives such as opportunities for grant funding towards clinical trial costs, tax advantages and user-fee waivers. If a product that has orphan designation subsequently receives the first FDA approval for the disease or condition for which it has such designation, the product is entitled to orphan drug exclusivity, which means that the FDA may not approve any other applications to market the same drug for the same indication for seven years from the date of such approval, except in limited circumstances, such as a showing of clinical superiority to the product with orphan exclusivity by means of greater effectiveness, greater safety, by providing a major contribution to patient care or in instances of drug supply issues. Competitors, however, may receive approval of either a different product for the same indication or the same product for a different indication that could be used “off-label” by physicians in the orphan indication, even though the competitor’s product is not approved in the orphan indication. Orphan drug exclusivity also could block the approval of one of our products for seven years if a competitor obtains approval before we do of the same product, as defined by the FDA, for the same indication we are seeking, or if our product candidate is determined to be contained within the scope of the competitor’s product for the same indication or disease. If one of our products designated as an orphan drug receives marketing approval for an indication broader than that which is designated, it may not be entitled to orphan drug exclusivity. Orphan drug status in the European Union has similar, but not identical, requirements and benefits.

Expedited Review and Approval

The FDA has various programs, including fast track designation, breakthrough therapy designation, accelerated approval and priority review, which are intended to expedite or simplify the process for the development and FDA review of drugs that are intended for the treatment of serious or life-threatening diseases or conditions and demonstrate the potential to

address unmet medical needs. The purpose of these programs is to provide important new drugs to patients earlier than under standard FDA review procedures.

To be eligible for a fast track designation, the FDA must determine, based on the request of a sponsor, that a product is intended to treat a serious or life-threatening disease or condition and demonstrates the potential to address an unmet medical need by providing a therapy where none exists or a therapy that may be potentially superior to existing therapy based on efficacy or safety factors. Fast track designation provides opportunities for more frequent interactions with the FDA review team to expedite development and review of the product. The FDA may also review sections of the approval application for a fast-track product on a rolling basis before the complete application is submitted, if the sponsor and the FDA agree on a schedule for the submission of the application sections, and the sponsor pays any required user fees upon submission of the first section of the approval application.

In addition, under the provisions of the FDASIA, passed in July 2012, a sponsor can request designation of a product candidate as a “breakthrough therapy.” A breakthrough therapy is defined as a drug or biologic that is intended, alone or in combination with one or more other drugs or biologics, to treat a serious or life-threatening disease or condition, and preliminary clinical evidence indicates that the drug or biologic may demonstrate substantial improvement over existing therapies on one or more clinically significant endpoints, such as substantial treatment effects observed early in clinical development. Drugs or biologics designated as breakthrough therapies are also eligible for accelerated approval. The FDA must take certain actions with respect to breakthrough therapies, such as holding timely meetings with and providing advice to the product sponsor, intended to expedite the development and review of an application for approval of a breakthrough therapy.

Products studied for their safety and effectiveness in treating serious or life-threatening illnesses and that provide meaningful therapeutic benefit over existing treatments may be eligible for accelerated approval and may be approved on the basis of adequate and well-controlled clinical trials establishing that the product has an effect on a surrogate endpoint that is reasonably likely to predict clinical benefit, or on a clinical endpoint that can be measured earlier than an irreversible effect on morbidity or mortality, or IMM, that is reasonably likely to predict an effect on IMM or other clinical benefit, taking into account the severity, rarity or prevalence of the condition and the availability or lack of alternative treatments. As a condition of approval, the FDA may require a sponsor of a product receiving accelerated approval to perform post-marketing trials to verify and describe the predicted effect on IMM or other clinical endpoint, and the product may be subject to expedited withdrawal procedures.

Even if a product qualifies for one or more of these programs, the FDA may later decide that the product no longer meets the conditions for qualification or decide that the time period for FDA review or approval will not be shortened. Furthermore, fast track designation, breakthrough therapy designation, accelerated approval and priority review do not change the standards for approval and may not ultimately expedite the development or approval process.

Marketing Approval

Assuming successful completion of the required clinical testing, the results of the preclinical studies and clinical trials, together with detailed information relating to the product’s chemistry, manufacture, controls and proposed labeling, among other things, are submitted to the FDA as part of an NDA requesting approval to market the product for one or more indications. In most cases, the submission of an NDA is subject to a substantial application user fee. Under the Prescription Drug User Fee Act, or PDUFA, guidelines that are currently in effect, the FDA has a goal of ten months from the date of “filing” of a standard NDA for a new molecular entity to review and act on the submission. This review typically takes twelve months from the date the NDA is submitted to the FDA because the FDA has sixty days from receipt to make a decision as to whether the application has been accepted for filing.

In addition, under the Pediatric Research Equity Act of 2003 as amended and reauthored, certain NDAs or supplements to an NDA must contain data that are adequate to assess the safety and effectiveness of the drug for the claimed indications in all relevant pediatric subpopulations, and to support dosing and administration for each pediatric subpopulation for which the product is safe and effective. The 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 approval of the product for use in adults, or full or partial waivers from the pediatric data requirements.

The FDA also may require submission of a risk evaluation and mitigation strategy, or REMS, plan to ensure that the benefits of the drug outweigh its risks. The REMS plan could include medication guides, physician communication plans, assessment plans, and/or elements to assure safe use, such as restricted distribution methods, patient registries or other risk minimization tools.

The FDA conducts a preliminary review of all NDAs within the first 60 days after submission, before accepting them for filing, to determine whether they are sufficiently complete to permit substantive review. The FDA may request additional information rather than accept an NDA for filing. In this event, the application must be resubmitted with the additional information. The resubmitted application is also subject to review before the FDA accepts it for filing. Once the submission is accepted for filing, the FDA begins an in-depth substantive review. The FDA reviews an NDA to determine, among other things, whether the drug is safe and effective and whether the facility in which it is manufactured, processed, packaged or held meets standards designed to assure the product’s continued safety, quality and purity.

The FDA may refer an application for a novel drug to an advisory committee. An advisory committee is a panel of independent experts, including clinicians and other scientific experts, that reviews, evaluates and provides a recommendation as to whether the application should be approved and under what conditions. The FDA is not bound by the recommendations of an advisory committee, but it considers such recommendations carefully when making decisions.

Before approving an NDA, the FDA typically will inspect the facility or facilities where the product is manufactured. The FDA will not approve an application unless it determines that the manufacturing processes and facilities are in compliance with cGMP requirements and adequate to assure consistent production of the product within required specifications. Additionally, before approving an NDA, the FDA will typically inspect one or more clinical trial sites to assure compliance with GCP requirements.

The testing and approval process for an NDA requires substantial time, effort and financial resources, and each may take several years to complete. Data obtained from preclinical and clinical testing are not always conclusive and may be susceptible to varying interpretations, which could delay, limit or prevent regulatory approval. The FDA may not grant approval of an NDA on a timely basis, or at all.

After evaluating the NDA and all related information, including the advisory committee recommendation, if any, and inspection reports regarding the manufacturing facilities and clinical trial sites, the FDA may issue an approval letter, or, in some cases, a complete response letter. A complete response letter generally contains a statement of specific conditions that must be met in order to secure final approval of the NDA and may require additional clinical or preclinical testing in order for the FDA to reconsider the application. Even with submission of this additional information, the FDA ultimately may decide that the application does not satisfy the regulatory criteria for approval. If and when those conditions have been met to the FDA’s satisfaction, the FDA will typically issue an approval letter. An approval letter authorizes commercial marketing of the drug with specific prescribing information for specific indications.

Even if the FDA approves a product, it may limit the approved indications for use of the product, require that contraindications, warnings or precautions be included in the product labeling, require that post-approval studies, including Phase 4 clinical trials, be conducted to further assess a drug’s safety after approval, require testing and surveillance programs to monitor the product after commercialization, or impose other conditions, including distribution and use restrictions or other risk management mechanisms under a REMS, which can materially affect the potential market and profitability of the product. The FDA may prevent or limit further marketing of a product based on the results of post-marketing studies or surveillance programs. After approval, some types of changes to the approved product, such as adding new indications, manufacturing changes, and additional labeling claims, are subject to further testing requirements and FDA review and approval.

Manufacturing and Supply

We contract with third parties for the manufacturing of all of our product candidates, and for pre-clinical and clinical studies and intend to continue to do so in the future. We do not own or operate any manufacturing facilities and we have no plans to build any owned clinical or commercial scale manufacturing capabilities. We believe that the use of contract manufacturing organizations (CMOs) eliminates the need to directly invest in manufacturing facilities, equipment and additional staff. Although we rely on contract manufacturers, our personnel and consultants have extensive manufacturing experience overseeing CMOs.

As we further develop our products, we expect to consider secondary or back-up manufacturers for both active pharmaceutical ingredient and drug product manufacturing. To date, our third-party manufacturers have met the manufacturing requirements for our product candidates in a timely manner. We expect third-party manufacturers to be capable of providing sufficient quantities of our product candidates to meet  our current needs, but we have not assessed these capabilities beyond the supply of clinical materials to date. We currently engage CMOs on a ‘‘fee for services’’ basis based on our current development plans.

Environmental, Social and Governance

Management and our board of directors are committed to corporate responsibility and recognize the importance of environmental, social and governance issues. including hiring, promotion and development practices. Our mission as an organization is to be patient-centric and develop innovative treatments to find solutions for patients suffering from rare and underserved dermatological diseases.  In particular, we are considering how to minimize our future carbon footprint when planning office renovations and will continue to focus our attention in the near term on methods of reducing our greenhouse gas emissions, increasing use of renewable energy, conserving water, and reducing waste generation.

Human Capital

As of December 31, 2022, we had sixnine full-time employees. None of our employees are covered by a collective bargaining agreement, and we consider our employee relations to be satisfactory. Our human capital resources objectives include, as applicable, identifying, recruiting, retaining, incentivizing and integrating our existing and new employees, advisors and consultants with the overall goal of having an employee base that embraces teamwork and shares a focus for using each person’s individual skills, experience and expertise in order to develop and maximize the value of corporate assets, and achieve long-term revenue and earnings growth.  As we build our organization, we will continue to focus on diversity, equity and inclusion across all aspects of our organization.

Other Information

We file periodic reports, proxy statements and other information with the SEC. Such reports, proxy statements and other information may be obtained, free of charge, by visiting the SEC’s website at www.sec.gov that contains all of the reports, proxy and information statements, and other information that we electronically file or furnish to the SEC. We also maintain a website at www.timberpharma.com where we make available the proxy statements, press releases, registration statements and reports on Forms 3, 4, 8-K, 10-K and 10-Q that we (and in the case of Section 16 reports, our insiders) file with the SEC. These forms are made available as soon as reasonably practicable after such material is electronically filed with or furnished to the SEC. Press releases are also issued via electronic transmission to provide access to our financial and product news, and we provide notification of and access to voice and internet broadcasts of our quarterly and annual results. Our website also includes investor presentations and corporate governance materials.

ITEM 1A. RISK FACTORS

We are subject to various risks that could have a material adverse effect on our business, our financial condition and our results of operations. These risks could cause actual operating results to differ from those expressed in certain “forward looking statements” contained in this Annual Report as well as in other communications.

Summary of Risk Factors

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Risks Related to Our Business, Financial Position and Capital Requirements

We have a limited operating history and have never generated any product revenue.

We are a clinical-stage biopharmaceutical company with a limited operating history. We were formed in February 2019, and since inception, we have incurred significant net losses. As of December 31, 2020,2022, we had an accumulated deficit of approximately $18.2$48.3 million. Since inception, weWe have financed our operations in the last three years with $18.9approximately $46 million through capital contributions.

contributions and a bridge loan.

Our ability to generate product revenue and become profitable depends upon our ability to successfully complete the development of, and obtain the necessary regulatory approvals for, our product candidates in development, including TMB-001 TMB-002 and TMB-003. We have never been profitable, have no products approved for commercial sale, and have not generated any product revenue.

Even if we receive regulatory approval for any of our product candidates, we do not know when or if such product candidate will generate product revenue. Our ability to generate product revenue depends on a number of factors, including, but not limited to, our ability to:

Because of the numerous risks and uncertainties associated with product development, Timber iswe are unable to predict the timing or amount of increased expenses, or when or if, we will be able to achieve or maintain profitability. Our expenses could increase beyond expectations if we are required by the FDA or comparable non-U.S. regulatory authorities to perform studies or clinical trials in addition to those that we currently anticipate. Even if any of our product candidates are approved for commercial sale, we anticipate incurring significant costs associated with their commercial launch. If we cannot successfully execute any one of the foregoing, our business may not succeed and your investment will be negatively impacted.

We will require substantial additional capital to fund our operations, and if we fail to obtain necessary financing, we may not be able to complete the development and commercialization of any of our product candidates.

We expect to spend substantial capital to complete the development of, seek regulatory approvals for and commercialize our lead product candidates, TMB-001 and TMB-003, as well as any of our other product candidates. We will require additional capital to complete the development and potential commercialization of our product candidates. Because the length of time and activities associated with successful development of our product candidates are highly uncertain, we are unable to estimate with certainty the actual funds we will require for development and any approved marketing and commercialization activities. Our future funding requirements, both near-and long-term, will depend on many factors, including, but not limited to:

We believe that our existing cash will be sufficient to fund our operating expenses and capital expenditure requirements into the second quarter of calendar year 2023. This estimate is based on assumptions that may prove to be wrong, and we could use our available capital resources sooner than we currently expect. We cannot be certain that additional capital will be available on acceptable terms, or at all. If we are unable to raise additional capital in sufficient amounts or on terms acceptable to us, we may have to significantly delay, scale back or discontinue the development or commercialization of any product candidate, or potentially discontinue operations altogether. In addition, attempting to secure additional capital may divert the time and attention of our management from day-to-day activities and harm our product candidate development efforts. Because of the numerous risks and uncertainties associated with the development and potential commercialization of our product candidates, we are unable to estimate the amounts of increased capital outlays, operating expenditures and capital requirements associated with our current product development programs.

We expect to incur significant losses for the foreseeable future and may never achieve or maintain profitability. Our independent registered public accounting firm has expressed substantial doubt about our ability to continue as a going concern.

Investment in biopharmaceutical product development is highly speculative because it entails substantial upfront capital expenditures and significant risk that a product candidate will fail to gain regulatory approval or fail to become

commercially viable. We have never generated any product revenue, and we cannot estimate with precision the extent of its future losses. We do not currently have any products that are available for commercial sale and we may never generate product revenue or achieve profitability. Our net loss was approximately $15.1$19.4 million for the year ended December 31, 2020.2022. As of December 31, 2020,2022, we had an accumulated deficit of approximately $18.2$48.3 million.

TMB-001 has not been approved for marketing in the United States and may never receive such approval. Although TMB-001 has an open IND and we are currently evaluating TMB-001 in our Phase 3 ASCEND study, TMB-001 may never receive FDA approval. As a result, we are uncertain when or if we will achieve profitability and, if so, whether we will be able to sustain it.

We expect to continue to incur substantial and increasing losses through the commercialization of any of our product candidates, if approved. None of our product candidates have been approved for marketing anywhere in the world, and we may never receive such approval. As a result, we are uncertain when or if we will achieve profitability and, if so, whether we will be able to sustain it. Our ability to generate product revenue and achieve profitability is dependent on our ability to complete the development of our product candidates, obtain necessary regulatory approvals for such product candidates, and manufacture and successfully market our product candidates alone or in collaboration with others. There can be no assurance that we will be profitable even if we successfully commercialize any of our product candidates. If we do successfully obtain regulatory approval to market any of our product candidates, our revenue will be dependent upon, in part and among other things, the size of the markets in the territories for which it gains regulatory approval, the number of competitors in such markets, the accepted price for any such product candidate and whether we own the commercial rights for those territories. If the indication approved by regulatory authorities is narrower than we expect, or the treatment population is narrowed by competition, physician choice or treatment guidelines, we may not generate significant revenue from sales of any of our product candidates, even if approved. Even if we do achieve profitability, we may not be able to sustain or increase profitability on a quarterly or annual basis. Failure to become and remain profitable may adversely impact the market price of our common stock and our ability to raise capital and continue operations.

We expect that our research and development expenses in connection with our development programs for our various product candidates will continue to be significant. We also are required to make substantial payments under the agreements under which we acquired our principal intellectual property rights. In addition, as we prepare for and if we obtain regulatory approval for any of our product candidates, we expect to incur increased sales, marketing and manufacturing expenses. As a result, we expect to continue to incur significant and increasing operating losses and negative cash flows for the foreseeable future. These losses have harmed and will continue to harm our results of operations, financial position and working capital.

Our independent registered public accounting firm has issued a going concern opinion on our consolidated financial statements as of December 31, 2020,2022, expressing substantial doubt that we can continue as an ongoing business due to insufficient capital for us to fund our operations.

Our business is heavily dependent on the successful development, regulatory approval and commercialization of our product candidates.

We currently have no products that are approved for commercial sale and may never be able to develop marketable products. We expect that a substantial portion of itsour efforts and expenditures will be devoted to the continued clinical evaluation and development of our lead product candidates TMB-001 TMB-002 and TMB-003 and the commercialization of such product candidates following regulatory approval, if received, as well as the continued clinical and preclinical evaluation of any of itsour other product candidates. Accordingly, our business currently depends heavily on the successful completion of itsour clinical trials and other development activities for our product candidates and subsequent regulatory approval and commercialization of such product candidates.

We cannot be certain that any of our product candidates will receive regulatory approval or be successfully commercialized even if such product candidates receive regulatory approval. The research, testing, manufacturing, labeling, approval, sale, marketing and distribution of products are, and will remain, subject to extensive regulation by the FDA and other regulatory authorities in the United States and other countries that each have differing regulations. We are not permitted to market

any of our product candidates in the United States until we receive approval of an NDA or in any foreign country until we receive the requisite approvals from the appropriate authorities in such countries for marketing authorization. In addition, we have not yet demonstrated our ability to complete later-stage or pivotal clinical trials for any of our product candidates.

We have not submitted an NDA for any of our product candidates to the FDA or any comparable application to any other regulatory authority. Obtaining approval of an NDA or similar regulatory approval is an extensive, lengthy, expensive and inherently uncertain process, and the FDA or other foreign regulatory authorities may delay, limit or deny approval of any of our product candidates for many reasons, including:

Even if we do receive regulatory approval to market any product candidate, any such approval may be subject to limitations on the indicated uses or patient populations for which we may market the product. Accordingly, even if we are able to obtain the requisite financing to continue to fund our development programs, we cannot assure you that any of our product candidates will be successfully developed or commercialized.

In addition, because each of our product candidates targets one or more indications in the medical dermatology field, if any of our product candidates encounter safety or efficacy problems, developmental delays, regulatory issues, supply issues, or other problems, our development plans for the affected product candidate and some or all of our other product candidates could be significantly harmed, which would harm our business. Further, competitors who are developing products in the dermatology field or that target the same indications as us with products that have a similar mechanism of action may experience problems with its products that could identify problems that would potentially harm our business.

Outbreaks of communicable diseases, including the COVID-19, may materially andOur inability to obtain additional financing could adversely affect our business, financial conditionability to continue our drug development programs and resultscould negatively impact the timing of operations.our clinical results.

We face risks relatedOur ability to health epidemics or outbreaksmeet our obligations and continue the research and development of communicable diseases, for example, the recent outbreak around the world, of the highly transmissible and pathogenic COVID-19. The outbreak of such communicable diseases could result in a widespread health crisis that could adversely affect general commercial activity and the economies and financial markets of many countries.

In December 2019, a novel strain of coronavirus, COVID-19, was reported to have surfaced in Wuhan, China andour product candidates is dependent on March 11, 2020, was declared a pandemic by the World Health Organization. The ultimate impact of the COVID-19 pandemic on our operations is unknown and will depend on future developments, which are highly uncertain and cannot be predicted with confidence, including the duration of the COVID-19 outbreak, new information which may emerge concerning the severity of the COVID-19 pandemic, and any additional preventative and protective actions that governments, or we, may determine are needed.

To date, many countries around the world have imposed quarantines and restrictions on travel and mass gatherings to slow the spread of COVID-19 and have closed non-essential businesses. As local jurisdictions continue to put restrictions in place, our ability to continue to operateraise adequate financing. We may not be successful in obtaining such additional financing in the amount required at any time, or for any period, or, if available, that it can be obtained on terms satisfactory to us. In the event that we are unable to obtain such additional financing, we may be unable to continue our businessdrug development programs and we may also be limited. Such events may result in a periodhave to tailor such programs for our drug candidates based on the amount of business, supply and drug product manufacturing disruption, and in reduced operations, any offunding we raise which could materially affect our business, financial condition and results of operations. It is also possible that COVID-19 could disproportionatelynegatively impact the hospitals andtiming of our clinical sitesresults. In addition, we could be required to cease our operations.

Our acquisition agreements with Patagonia obligate us to make certain milestone payments prior to the time in which we conduct anywill be generating revenue, which may cause development and marketing of our clinical trials,lead product candidates to not be economically viable.

We are obligated to pay certain milestone payments to Patagonia pursuant to two acquisition agreements. Zachary Rome, a former member of our board of directors and former Executive Vice-President and Chief Operating Officer serves as President of Patagonia and also maintains an ownership interest therein. Patagonia is entitled to up to $27.0 million of cash milestone payments relating to certain regulatory and commercial achievements of TMB-001, with the first being a payment of $4.0 million upon initiation of a Phase 3 pivotal trial, as agreed with the FDA.

On July 20, 2022, we entered into the Amendment to the Asset Acquisition Agreement with Patagonia. Pursuant to the Amendment, we and Patagonia extended the time for our payment of the first milestone payment, which could have a material adverse effect on our business and our results of operation and financial condition.

The spread of COVID-19, which has caused a broad impact globally, may materially affect us economically. While the potential economic impact brought by, and the duration of, COVID-19 may be difficult to assess or predict, a widespread pandemic could result in significant disruption of global financial markets, reducing our ability to access capital, which couldbecame payable in the future negatively affectthird quarter of 2022 upon us commencing patient enrollment in our liquidity. In addition,Phase 3 ASCEND study in the second quarter of 2022. The first milestone payment became payable by us in two tranches, with $2.25 million due by September 1, 2022, and $2.065 million due by September 1, 2023. The first milestone payment was made on September 1, 2022. The next milestone payments relate to (i) a recession or market correction resulting from the spreadone-time payment of COVID-19 could materially affect our business and the value of our common stock.

This pandemic could result in difficulty securing clinical trial site locations, CROs, and/or trial monitors and other critical vendors and consultants supporting the trial. In addition, outbreaks or the perception$7.0 million upon FDA approval of an outbreak nearNDA related to the product for the treatment of CI, or a clinical trial site location could impactsubstantially similar indication, and (ii) a one-time payment of $2.0 million upon EMA approval of an MMA related to the Company’s abilityproduct for the treatment of CI, or a substantially similar indication.

Patagonia is also entitled to enroll patients. These situations, or others associatedup to $10.25 million of cash milestone payments relating to certain regulatory and commercial achievements of TMB-003, with COVID-19, could cause delays in the Company’s clinical trial plans and could increase expected costs, allfirst being a one-time payment of which could have a material adverse effect on$250,000 upon the Company’s business and its financial condition.opening of an IND with the FDA.

The COVID-19 outbreak may also affect the ability of our staff and the parties we work with to carry out our non-clinical, clinical, and drug manufacturing activities. We rely or may in the future rely on clinical sites, investigators and other study staff, consultants, independent contractors, contract research organizations and other third-party service providers to assist us in managing, monitoring and otherwise carrying out our nonclinical studies and clinical trials. We also rely or may in the future rely on consultants, independent contractors, contract manufacturing organizations, and other third-party service providers to assist us in managing, monitoring and otherwise carrying out our active pharmaceutical ingredient production, formulation, and drug manufacturing activities. COVID-19 may affect the ability of any of these external people, organizations, or companies to devote sufficient time and resources to our programs or to travel to perform work for us.

Potential negative impactsBecause certain of the COVID-19 outbreak on the conduct of current or future clinical studies include delays in gaining feedback from regulatory agencies, starting new clinical studies, and recruiting subjectsmilestone payments payable by us to studies thatPatagonia are enrolling. The potential negative impacts also include inabilitydue upon certain events related to have study visits at study sites, incomplete collection of safety and efficacy data, and higher rates of drop-out of subjects from ongoing studies, delays in site entry of study data into the data base, delays in monitoring of study data because of restricted physical access to study sites, delays in site responses to queries, delays in data-base lock, delays in data analyses, delays in time to top-line data, and delays in completing study reports. New or worsening COVID-19 disruptions or restrictions could have the potential to further negatively impact our non-clinical studies, clinical trials, and drug manufacturing activities.

We will require substantial additional capital to fund our operations, and if we fail to obtain necessary financing, we may not be able to complete the development and commercializationregulatory approval of our product candidates, we will be required to make such payments prior to the

time at which we are able to generate revenue, if any, from sales any of our product candidates.

We expectcandidates, if approved. There can be no assurance that we will have the funds necessary to spend substantial capitalmake such payments, or be able to complete theraise such funds when needed, on terms acceptable to us, or at all. Furthermore, if we are forced to raise additional funds, we may be required to delay, limit, reduce or terminate our product development of, seek regulatory approvals foror future commercialization efforts, or grant rights to develop and commercialize our leadmarket product candidates TMB-001, TMB-002that we would otherwise develop and TMB-003, as well as any of our other product candidates. We will require additional capital to complete the development and potential commercialization of our product candidates. Because the length of time and activities associated with successful development of our product candidates are highly uncertain, we are unable to estimate with certainty the actual funds we will require for development and any approved marketing and commercialization activities. Our future funding requirements, both near-and long-term, will depend on many factors, including, but not limited to:

We believe that our existing cash will be sufficient to fund our operating expenses and capital expenditure requirements into at least the third quarter of calendar year 2021. This estimate is based on assumptions that may prove to be wrong, and we could use our available capital resources sooner than we currently expect. We cannot be certain that additional capital will be available on acceptable terms, or at all.market ourselves. If we are unable to raise additional capital infunds or maintain sufficient amounts or on terms acceptableliquidity to us,make our payment obligations if and when they become due, we may have to significantly delay, scale backbe in material breach of our acquisition agreements and our counterparties may seek legal action or discontinue the development or commercializationremedies against us, which would harm our business, financial condition, results of any product candidate, or potentially discontinue operations altogether. and prospects.

In addition, attemptingbecause the milestone payments due upon the achievement of certain events would be payable prior to secure additional capital may divert the time and attention ofin which we are able to generate revenue, such obligations under our management from day-to-day activities and harm our product candidate development efforts. Because of the numerous risks and uncertainties associated withagreements may cause the development and potential commercializationmarketing of our product candidates, we are unableTMB-001 and TMB-003 to estimate the amounts of increased capital outlays, operating expenditures and capital requirements associated with our current product development programs.not be economically viable.

Raising additional funds by issuing equity securities may cause dilution to existing equity holders, raising additional funds through debt financings may involve restrictive covenants, and raising funds through lending and licensing arrangements may restrict our operations or require us to relinquish proprietary rights.

We expect that significant additional capital will be needed in the future to continue our planned operations. Until such time, if ever, that we can generate substantial product revenue, we expect to finance our cash needs through a combination of equity offerings, debt financings, strategic alliances and license and development agreements or other collaborations. To the extent that we raise additional capital by issuing equity securities, existing equity ownership may experience substantial dilution, and the securities may include preferred shares with liquidation or other preferences that could harm the rights of our securityholders.

 Additionally, any agreements for future debt or preferred equity financing, if available, may involve agreements that include covenants limiting or restricting our ability to take specific actions, such as incurring additional debt, making capital expenditures, declaring dividends, creating liens, redeeming our stock or making investments.

If we raise additional funds through collaborations, strategic alliances or marketing, distribution or licensing arrangements with third parties, we may have to relinquish valuable rights to our technologies, future revenue streams, research programs or product candidates, or grant licenses on terms that may not be favorable to us. If we are unable to raise additional funds when needed, we may be required to delay, limit, reduce or terminate our product development or future commercialization efforts, or grant rights to develop and market product candidates that we would otherwise develop and market ourselves.

Issuance of our common stock upon exercise of convertible securities may depress the price of our common stock.

As of March 15, 2021,25, 2023, we had 36,843,0453,007,620 shares of common stock issued and outstanding, outstanding, warrants to purchase 17,335,503885,664 shares of common stock at a weighted average exercise price of $2.37$1.31 and outstanding stock options to purchase 200,23789,632 shares of common stock at a weighted average exercise price of $8.58$37.37 per share. In addition, we have outstanding value appreciation rightsVARs convertible into an aggregate of 367,6704,546 shares of common stock and 750 restricted stock units convertible into 750 shares of common stock. All warrants and stock options are convertible, or exercisable into, one share of common stock. The issuance of shares of our common stock upon the exercise of outstanding convertible securities could result in substantial dilution to our stockholders, which may have a negative effect on the price of our common stock.

The Company has a class of Series A Preferred Stock which is currently redeemable, subject to Delaware law.

The Company has a class of Series A Preferred Stock which is currently subject to redemption at any time in whole or in part at the request of the holder, TardiMed.  The redemption price is equal to approximately $1.9 million in the aggregate, including accumulated and unpaid dividends which accrue dividends at the rate of 8% per annum.  Redemption is subject to certain limitations under Delaware law, so that our ability to pay the redemption price to TardiMed may be limited. 

Our stock price can be volatile, which increases the risk of litigation, and may result in a significant decline in the value of your investment.

Since the completion of the Merger on May 18, 2020, the market price of our common stock has varied between a high of $5.69 and a low of $0.665. The trading price of our common stock has historically been, and is likely to continue to be, highly volatile and subject to wide fluctuations in price in response to various factors, many of which are beyond our control and may not be related to our operating performance. These fluctuations could cause you to lose part or all of your investment in our common stock. These factors include, but are not limited to, the following:

These broad market and industry factors may materially affect the market price of our common stock, regardless of our development and operating performance. In the past, following periods of volatility in the market price of a company’s securities, securities class-action litigation has often been instituted against that company. Due to the volatility of our stock price, we are currently and may be the target of securities litigation in the future. Securities litigation could result in substantial costs and divert management’s attention in the future attention and resources from our business.

If we are unable to effectively maintain a system of internal control over financial reporting, we may not be able to accurately or timely report our financial results and our stock price could be adversely affected.

We maintain disclosure controls and procedures designed to ensure that we timely report information as specified in the rules and regulations of the SEC. We also maintain a system of internal control over financial reporting. Our internal control over financial reporting is designed to provide reasonable assurance regarding the reliability of the financial reporting and the preparation of financial statements for external purposes in accordance with GAAP. Effective internal control over financial reporting is necessary for us to provide reliable reports and prevent fraud. Any failure to address such difficulties encountered in maintaining operation of these internal controls over financial reporting, could harm our operations, decrease the reliability of our financial reporting, and cause us to fail to meet our financial reporting obligations, which could adversely affect our business and reduce our stock price.

We are subject to extensive and costly government regulation.

Product candidates employing our technology are subject to extensive and rigorous domestic government regulation including regulation by the FDA, the Centers for Medicare and Medicaid Services, other divisions of the United States Department of Health and Human Services, the United States Department of Justice, state and local governments, and their respective foreign equivalents. The FDA regulates the research, development, preclinical and nonclinical testing and clinical studies, manufacture, safety, effectiveness, record-keeping, reporting, labeling, storage, approval, advertising, promotion, sale, distribution, import, and export of biopharmaceuticalpharmaceutical products. The FDA regulates small molecule chemical entities as drugs, subject to an NDA under the Federal Food, Drug, and Cosmetic Act (“FDCA”). The FDA applies the same standards for biologics, requiring an investigational new drug ("IND")IND application, followed by a Biologic License Application, or BLA, prior to licensure. Other products, such as vaccines, are also regulated under the Public Health Service Act. The FDA has conflated the standards for approval of NDAs and BLAs so that it requires the same types of information on safety, effectiveness, and CMCs. If products employing our technologies are marketed abroad, they will also be subject to extensive regulation by foreign governments, whether or not they have obtained FDA approval for a given product and its uses. Such foreign regulation may be equally or more demanding than corresponding United States regulation.

Government regulation substantially increases the cost and risk of researching, developing, manufacturing, and selling our products. The regulatory review and approval process, which includes preclinical and nonclinical testing and clinical studies of each product candidate, is lengthy, expensive, and uncertain. We or our collaborators must obtain and maintain regulatory authorization to conduct clinical studies. We or our collaborators must obtain regulatory approval for each product we intend to market, and the manufacturing facilities used for the products must be inspected and meet legal requirements. Securing regulatory approval requires the submission of extensive preclinical, nonclinical and clinical data and other supporting information for each proposed therapeutic indication in order to establish the product'sproduct’s safety and efficacy, and in the case of biologics also potency and purity, for each intended use. The development and approval process takes many years, requires substantial resources, and may never lead to the approval of a product.

Even if we are able to obtain regulatory approval for a particular product, the approval may limit the indicated medical uses for the product, may otherwise limit our ability to promote, sell, and distribute the product, may require that we conduct costly post-marketing surveillance, and/or may require that we conduct ongoing post-marketing studies. Material changes to an approved product, such as, for example, manufacturing changes or revised labeling, may require further regulatory review and approval. Once obtained, any approvals may be withdrawn, including, for example, if there is a later discovery of previously unknown problems with the product, such as a previously unknown safety issue.

If we, oursour collaborators, or our contract manufacturing organizations ("CMOs") fail to comply with applicable regulatory requirements at any stage during the regulatory process, such noncompliance could result in, among other things delays in the approval of applications or supplements to approved applications; refusal of a regulatory authority, including the FDA, to review pending market approval applications or supplements to approved applications; warning letters; fines; import and/or export restrictions; product recalls or seizures; injunctions; total or partial suspension of production; civil penalties; withdrawals of previously approved marketing applications or licenses; recommendations by the FDA or other regulatory authorities against governmental contracts; and/or criminal prosecutions.

We do not have, and may never obtain, the regulatory approvals we need to market our product candidates.

Following completion of clinical studies, the results are evaluated and, depending on the outcome, submitted to the FDA in the form of an NDA or BLA in order to obtain FDA approval of the product and authorization to commence commercial marketing. In responding to an NDA, the FDA may require additional testing or information, may require that the product labeling be modified, may impose post-approval study and other commitments or reporting requirements or other restrictions on product distribution, or may deny the application. The FDA has established performance goals for review of NDAs or BLAs: six months for priority applications and ten months for standard applications. However, the FDA is not required to complete its review within these time periods. The timing of final FDA review and action varies greatly but can take years in some cases and may involve the input of an FDA advisory committee of outside experts. Product sales in the United States may commence only when an NDA or BLA is approved.

It is possible that none of our product candidates will be approved for marketing. Failure to obtain regulatory approvals, or delays in obtaining regulatory approvals, may adversely affect the successful commercialization of any drugs or biologics that we or our partners develop, may impose additional costs on us or our collaborators, may diminish any competitive advantages that we or our partners may attain, and/or may adversely affect our receipt of revenues or royalties.

If we are unable to file for approval of TMB-001 or TMB-002 under Section 505(b)(2) of the FDCA or if we are required to generate additional data related to safety and efficacy in order to obtain approval under Section 505(b)(2), we may be unable to meet our anticipated development and commercialization timelines.

Our current plans for filing NDAs for our product candidates include efforts to minimize the data we will be required to generate in order to obtain marketing approval for itsour product candidates and therefore reduce the development time. We have held pre-IND meetings with the FDA to discuss, among other things, the regulatory pathways for TMB-001 and TMB-002.TMB-001. The timelines for filing and review of our NDAs for TMB-001 and TMB-002 are based on its plan to submit such NDAs under Section 505(b)(2) of the FDCA, which would enable us to rely in part on data in the public domain or elsewhere. We have not yet filed an NDA under Section 505(b)(2) for any of our product candidates. Depending on the data that may be required by the FDA for approval, some of the data may be related to products already approved by the FDA. If the data relied upon is related to products already approved by the FDA and covered by third-party patents, we would be required to certify that we do not infringe the listed patents or that such patents are invalid or unenforceable. As a result of the certification, the third-party would have 45 days from notification of our certification to initiate an action against us.

In the event that an action is brought in response to such a certification, the approval of our NDA could be subject to a stay of up to 30 months or more while we defend against such a suit. Approval of our product candidates under Section 505(b)(2) may therefore be delayed until patent exclusivity expires or until we successfully challenge the applicability of those patents to such product candidates. Alternatively, we may elect to generate sufficient additional clinical data so that we no longer rely on data which triggers a potential stay of the approval of our product candidates. Even if no exclusivity periods apply to our applications under Section 505(b)(2), the FDA has broad discretion to require us to generate additional data on the safety and efficacy of our product candidates to supplement third-party data on which we may be permitted to rely. In either event, we could be required, before obtaining marketing approval for any of our product candidates, to conduct substantial new research and development activities beyond those we currently plan to engage in order to obtain approval of our product candidates. Such additional new research and development activities would be costly and time consuming.

We may not be able to realize a shortened development timeline for our product candidates, and the FDA may not approve an NDA based on our review of the submitted data. If products containing isotretinoin or rapamycin are withdrawn from the market by the FDA for any safety reason, we may not be able to reference such products to support a 505(b)(2) NDA for TMB-001 or TMB-002, respectively, and we may need to fulfill the more extensive requirements of Section 505(b)(1). If we are required to generate additional data to support approval, we may be unable to meet our anticipated development and commercialization timelines, may be unable to generate the additional data at a reasonable cost, or at all, and may be unable to obtain marketing approval of our lead product candidates.

Even if we are able to commercialize any product candidate that we may develop, the product may become subject to unfavorable pricing regulations, third-party payor reimbursement practices or healthcare reform initiatives that could harm our business.

The commercial success of our current or future product candidates will depend substantially, both domestically and abroad, on the extent to which the costs of itsour product candidates will be paid by health maintenance, managed care, pharmacy benefit and similar healthcare management organizations, or reimbursed by government health administration authorities (such as Medicare and Medicaid), private health coverage insurers and other third-party payors. If reimbursement is not available, or is available only to limited levels, we may not be able to successfully commercialize itsour products. Even if coverage is provided, the approved reimbursement amount may not be high enough to allow us to establish and maintain pricing sufficient to realize a meaningful return on itsour investment.

There is significant uncertainty related to third-party payor coverage and reimbursement of newly approved drugs. Marketing approvals, pricing and reimbursement for new drug products vary widely from country to country. Some countries require approval of the sale price of a drug before it can be marketed. In many countries, the pricing review period begins after marketing or product licensing approval is granted. In some non-U.S. markets, prescription pharmaceutical pricing remains subject to continuing governmental control even after initial approval is granted. As a result, we might obtain marketing approval for a product in a particular country, but then be subject to price regulations that delay commercial launch of the product, possibly for lengthy time periods, which may negatively impact the revenues we are able to generate from the sale of the product in that country. Adverse pricing limitations may hinder our ability to recoup itsour investment in one or more product candidates, even if our product candidates obtain marketing approval.

Our ability to commercialize our product candidates will depend in part on the extent to which coverage and reimbursement for these products and related treatments will be available from government health administration authorities, private health insurers and other organizations. Government authorities and third-party payors, such as private health insurers and health maintenance organizations, decide which medications they will cover and establish reimbursement levels. The healthcare industry is acutely focused on cost containment, both in the United States and elsewhere. Government authorities and third-party payors have attempted to control costs by limiting coverage and the amount of reimbursement for particular medications, which could affect our ability to sell our product candidates profitably. These payors may not view our products, if any, as cost-effective, and coverage and reimbursement may not be available to our customers, or may not be sufficient to allow our products, if any, to be marketed on a competitive basis. Cost-control initiatives could cause us to decrease the price we might establish for products, which could result in lower than anticipated product revenues. If the prices for our products, if any, decrease or if governmental and other third-party payors do not provide adequate coverage or reimbursement, our prospects for revenue and profitability will suffer.

There may also be delays in obtaining coverage and reimbursement for newly approved drugs, and coverage may be more limited than the indications for which the drug is approved by the FDA or comparable non-U.S. regulatory authorities. Moreover, eligibility for reimbursement does not imply that any drug will be paid for in all cases or at a rate that covers our costs, including research, development, manufacture, sale and distribution. Reimbursement rates may vary, by way of example, according to the use of the drug and the clinical setting in which it is used. Reimbursement rates may also be based on reimbursement levels already set for lower cost drugs or may be incorporated into existing payments for other services.

In addition, increasingly, third-party payors are requiring higher levels of evidence of the benefits and clinical outcomes of new technologies and are challenging the prices charged. We cannot be sure that coverage will be available for any product candidate that we may commercialize and, if available, that the reimbursement rates will be adequate. Further, the net reimbursement for drug products may be subject to additional reductions if there are changes to laws that presently restrict imports of drugs from countries where they may be sold at lower prices than in the United States. An inability to promptly obtain coverage and adequate payment rates from both government-funded and private payors for any of our product candidates for which we obtain marketing approval could have a material adverse effect on our operating results, our ability to raise capital needed to commercialize products and our overall financial condition.

We rely on our license agreement and acquisition agreements to provide rights to certain intellectual property relating to certain of our lead product candidates.candidates, TMB-001 and TMB-003. Any termination or loss of significant rights under any such agreements would adversely impact our development or commercialization of such product candidates.

We have licensed certain intellectual property relating to certain of its product candidates from AFT Pharmaceuticals Limited, or AFT, through a license agreement. We have acquired the rights to certain intellectual property relating to certain of itsour lead product candidates, TMB-001 and TMB-003, from Patagonia through two acquisition agreements. If, for any reason, our license agreement or acquisition agreements are terminated or we otherwise lose those rights, it would harm our business. Our license agreement imposes on usIn addition to financial obligations, relating to exclusivity, territorial rights, development, commercialization, funding, payment, diligence, sublicensing, insurance, intellectual property protection and other matters. Ourour acquisition agreements impose on us obligations and restrictions relating to development, commercialization, funding, sublicensing, non-competition, intellectual property protection, payment and royalties and other matters. If we breach any material obligations, or use the intellectual property licensed to or acquired by us in an unauthorized manner, we may be required to pay damages to our collaborators and such collaborators may have the right to terminate the applicable licenses or rights,

as applicable, which would result in us being unable to develop, manufacture and sell one or more of our product candidates, if approved. In addition, under the license agreement, the licensor has the first right to file, prosecute (including any post-grant proceeding) and maintain all licensed patents, and we

We may not have any control over such actions unless such licensor elects notbe successful in our efforts to exercise our rights.

Our license agreementidentify and acquisition agreements with AFT and Patagonia obligate usacquire or in-license additional product candidates, or to make certain milestone payments.

We are obligated to pay certain milestone payments to AFT and Patagonia pursuant to their license agreement and acquisition agreements. Zachary Rome, our Executive Vice-President and Chief Operating Officer serves as President of Patagonia and also maintains an ownership interest therein. AFT is entitled to up to $25.5 million of cash milestone payments relating to certain regulatory and commercial achievements of TMB-002. Patagonia is entitled to up to $27.0 million of cash milestone payments relating to certain regulatory and commercial achievements of TMB-001, with the first being initiation of a Phase 3 pivotal trial, as agreed with the FDA. Patagonia is also entitled to up to $10.25 million of cash milestone payments relating to certain regulatory and commercial achievements of TMB-003, with the first being a one-time payment of $250,000 upon the opening of an IND with the FDA.

Because certain of the milestone payments payable by us to AFT and Patagonia are due upon certain events related toenter into collaborations or strategic alliances for the development and regulatory approvalcommercialization of itsany such future product candidates.

We may seek to identify and acquire or in-license novel product candidates in the medical dermatology field. The process by which we may be required to make such payments prior to the time at which it is able to generate revenue, if any, from sales any of ouridentify product candidates if approved. Theremay fail to yield product candidates for clinical development for a number of reasons, including those discussed in these risk factors and also:

We may choose to focus our efforts and resources on a potential product candidate that ultimately proves to be no assuranceunsuccessful. We also cannot be certain that, following an acquisition or in-licensing transaction, we will haveachieve the funds necessary to makerevenue or specific net income that justifies such payments, or be able to raise such funds when needed, on terms acceptable to us, or at all. Furthermore, if we are forced to raise additional funds, we may be required to delay, limit, reduce or terminate our product development or future commercialization efforts, or grant rights to developtransaction. Further, time and marketresources spent identifying, acquiring and developing potential product candidates that we would otherwise develop and market ourselves.may distract management’s attention from our primary business or other development programs. If we are unable to raise additional fundsidentify and acquire suitable product candidates for clinical development, this would adversely impact our business strategy, our financial position and share price.

In the future, may decide to collaborate with other pharmaceutical companies for the development and potential commercialization of our product candidates in the United States or maintain sufficient liquidityother countries or territories of the world. We will face significant competition in seeking appropriate collaborators. We are exploring ways to makeefficiently fund the Company including entering into non-dilutive partnerhsips aor licensing agreements. We may not be successful in our payment obligations ifefforts to establish a strategic partnership or other alternative arrangements for our product candidates because such product candidates may be deemed to be at too early of a stage of development for collaborative effort and third parties may not view our product candidates as having the requisite potential to demonstrate safety and efficacy. If and when they become due, we may be in material breachcollaborate with a third party for development and commercialization of a product candidate, it can expect to relinquish some or all of the control over the future success of that product candidate to the third party. Our ability to reach a definitive agreement for a collaboration will depend, among other things, upon our licenseassessment of the collaborator’s resources and acquisition agreementsexpertise, the terms and our counterparties may seek legal action or remedies against us, which would harm our business, financial condition, resultsconditions of operationsthe proposed collaboration and prospects.the proposed collaborator’s evaluation of a number of factors.

If we are not successful in attracting and retaining highly qualified personnel, we may not be able to successfully implement our business strategy.

Our ability to compete in the highly competitive pharmaceuticals industry depends in large part upon our ability to attract highly qualified managerial, scientific and medical personnel. In order to induce valuable employees to remain with us, we intend to provide employees with stock options that vest over time. The value to employees of stock options that vest over time will be significantly affected by movements in the price of the common stock that we will not be able to control and may at any time be insufficient to counteract more lucrative offers from other companies.

Our management team has expertise in many different aspects of drug development and commercialization. However, we will need to hire additional personnel as we further develop our drug candidates. Competition for skilled personnel in the pharmaceutical industry is intense and competition for experienced scientists may limit our ability to hire and retain highly

qualified personnel on acceptable terms. Despite our efforts to retain valuable employees, members of its management, scientific and medical teams may terminate their employment with us on short notice. Our success also depends on our ability to continue to attract, retain and motivate highly skilled junior, mid-level, and senior managers as well as junior, mid-level, and senior scientific and medical personnel.

Other pharmaceutical companies with which we compete for qualified personnel have greater financial and other resources, different risk profiles, and a longer history in the industry than we do. Other pharmaceutical companies also may provide more diverse opportunities and better chances for career advancement. Some of these characteristics may be more appealing to high-quality candidates than what we have to offer. If we are unable to continue to attract and retain high-quality personnel, the rate and success at which we can develop and commercialize product candidates would be limited.

We will need to grow the size of our organization, and we may experience difficulties in managing this growth.

As of December 31, 2020,2022, we had sixnine employees. As our development and commercialization plans and strategies develop, we will need to expand the size of our employee base for managerial, operational, sales, marketing, financial and other resources. Future growth would impose significant added responsibilities on members of management, including the need to identify, recruit, maintain, motivate and integrate additional employees. In addition, our management may have to divert a disproportionate amount of its attention away from its day-to-day activities, including the additional requirements on management as a public company, and devote a substantial amount of time to managing these growth activities. Our future financial performance, ability to commercialize our product candidates and our ability to compete effectively will depend, in part, on our ability to effectively manage our future growth.

Adverse global conditions, including economic uncertainty, may negatively impact our financial results.

We may not be successful in our efforts to identify and acquire or in-license additional product candidates, or to enter into collaborations or strategic alliances for the development and commercialization of any such future product candidates.

We may seek to identify and acquire or in-license novel product candidatesGlobal conditions, dislocations in the medical dermatology field. The process by which we identify product candidates may fail to yield product candidates for clinical development for a number of reasons, including those discussed in these risk factors and also:

We may choose to focus our efforts and resourcesfinancial markets, any negative financial impacts affecting United States corporations operating on a potential product candidate that ultimately provesglobal basis as a result of tax reform or changes to be unsuccessful. We also cannot be certain that, following an acquisitionexisting trade agreements or in-licensing transaction, we will achieve the revenuetax conventions, or specific net income that justifies such transaction. Further, time and resources spent identifying, acquiring and developing potential product candidates may distract management's attention from Timber's primary business or other development programs. If we are unable to identify and acquire suitable product candidates for clinical development, this wouldinflation, could adversely impact our business strategy,in a number of ways, including longer sales cycles, lower prices for our financial position and share price.

products, reduced licensing renewals, customer disruption or foreign currency fluctuations.

In addition, the future, may decide to collaborateglobal macroeconomic environment could be negatively affected by, among other things, the COVID-19 pandemic or other epidemics, instability in global economic markets, increased U.S. trade tariffs and trade disputes with other pharmaceuticalcountries, instability in the global credit markets, supply chain weaknesses, instability in the geopolitical environment as a result of the withdrawal of the United Kingdom from the European Union, the Russian invasion of the Ukraine and other political tensions, and foreign governmental debt concerns. Such challenges have caused, and may continue to cause, uncertainty and instability in local economies and in global financial markets.

More recently, the closures of Silicon Valley Bank, or SVB, and Signature Bank and their placement into receivership with the Federal Deposit Insurance Corporation, or FDIC created bank-specific and broader financial institution liquidity risk and concerns. Although the Department of the Treasury, the Federal Reserve, and the FDIC jointly released a statement that depositors at SVB and Signature Bank would have access to their funds, even those in excess of the standard FDIC insurance limits, under a systemic risk exception, future adverse developments with respect to specific financial institutions or the broader financial services industry may lead to market-wide liquidity shortages, impair the ability of companies forto access near-term working capital needs, and create additional market and economic uncertainty. There can be no assurance that future credit and financial market instability and a deterioration in confidence in economic conditions will not occur.

We face risks related to health epidemics and outbreaks of communicable diseases, including COVID-19, which could significantly disrupt our preclinical studies and clinical trials.

The duration and the developmentgeographic impact of the business disruption and potential commercializationrelated financial impact resulting from the COVID-19 pandemic cannot be reasonably estimated at this time and our business could be adversely impacted by its effects. In

an effort to halt the outbreak of COVID-19, the United States or other countries or territorieshas, at times, placed significant restrictions on travel and many businesses have announced extended closures which could adversely impact our operations. Enrollment of patients in our clinical trials may be delayed due to COVID-19. The impact of the world. We will face significant competitionCOVID-19 pandemic on the operations of the FDA and other health authorities may delay potential approvals of our clinical trial protocols. In addition, we rely on independent clinical investigators, contract research organizations and other third-party service providers to assist us in seeking appropriate collaborators. Wemanaging, monitoring and otherwise carrying out our nonclinical studies and clinical trials and the pandemic may not be successfulaffect their ability to devote sufficient time and resources to our programs.

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Temporary closure of facilities at which our clinical trials are conducted, or restrictions on the ability of our employees,

clinicians or patients enrolled in our effortstrials to establishtravel could adversely affect our operations and our ability to conduct and

complete our clinical trials. In addition, the COVID-19 pandemic, including insufficient vaccination of the general

population and the emergence of new variants, including the delta variant and the omicron variant, could affect the

health and availability of our workforce as well as those of the third parties on whom we rely. If new, more infectious or

severe variants emerge, it is possible that the impact of the pandemic on our business may increase or lengthen in

duration. As a strategic partnership or other alternative arrangementsresult of the foregoing factors, the expected timeline for data readouts of our product candidates because such product candidatesnonclinical studies and

clinical trials and certain regulatory filings may be deemed to be at too early of a stage of development for collaborative effort and third parties may not viewnegatively impacted, which would adversely affect our product candidates as having the requisite potential to demonstrate safety and efficacy. If and when we collaborate with a third party for development and commercialization of a product candidate, it can expect to relinquish some or all of the control over the future success of that product candidate to the third party. Our ability to reach a definitive agreement for a collaboration will depend, among other things, upon our assessment of the collaborator's resources and expertise, the terms and conditions of the proposed collaboration and the proposed collaborator's evaluation of a number of factors.business.

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International expansion of our business exposes us to business, legal, regulatory, political, operational, financial and economic risks associated with conducting business outside of the United States.

Part of our business strategy involves potential expansion internationally with third-party collaborators to seek regulatory approval for itsour product candidates outside the United States. Doing business internationally involves a number of risks, including but not limited to:

Any of these risks, if encountered, could significantly harm our future international expansion and operations and, consequently, negatively impact our financial condition, results of operations and cash flows.

Our business and operations would suffer in the event of system failures, cyber-attacks or a deficiency in our cyber-security.

Our computer systems, as well as those of various third parties on which we rely, may sustain damage from computer viruses, unauthorized access, data breaches, phishing attacks, cybercriminals, natural disasters (including hurricanes and earthquakes), terrorism, war and telecommunication and electrical failures. We rely on our third-party providers to implement effective security measures and identify and correct for any such failures, deficiencies or breaches. The risk of a security breach or disruption, particularly through cyber-attacks or cyber intrusion, including by computer hackers, foreign governments and cyber terrorists, has generally increased as the number, intensity and sophistication of attempted attacks and intrusions from around the world have increased. If such an event were to occur and cause interruptions in our operations, it could result in a material disruption of our drug development programs. For example, the loss of nonclinical or clinical trial data from completed, ongoing or planned trials could result in delays in our regulatory approval efforts and significantly increase our costs to recover or reproduce the data. To the extent that any disruption or security breach were to result in a loss of or damage to our data or applications, or inappropriate disclosure of personal, confidential or proprietary information, we could incur liability and the further development of any product candidate could be delayed.

If product liability lawsuits are brought against us, we may incur substantial liabilities and may be required to limit commercialization of itsour drug candidates.

We face a potential risk of product liability as a result of the clinical testing of our drug candidates and will face an evenmuch greater risk if we commercialize our drug candidates. For example, we may be sued if any product we develop or any materials that we use in our products allegedly causes injury or is found to be otherwise unsuitable during product testing, manufacturing, marketing or sale. Any such product liability claims may include allegations of defects in manufacturing, defects in design, a failure to warn of dangers inherent in the product, negligence, strict liability and a breach of warranties. Claims could also be asserted under state consumer protection acts. If we cannot successfully defend ourselves against product liability claims, we may incur substantial liabilities or be required to limit commercialization of our drug candidates. Even a successful defense would require significant financial and management resources. Regardless of the merits or eventual outcome, liability claims may result in:

Our inability to obtain and retain sufficient product liability insurance at an acceptable cost to protect against potential product liability claims could prevent or inhibit the commercialization of products we develop. We intend to obtain product liability insurance covering our clinical trials. Although we will maintain such insurance, any claim that may be brought against us could result in a court judgment or settlement in an amount that is not covered, in whole or in part, by our

insurance or that is in excess of the limits of our insurance coverage. Our insurance policies also have various exclusions, and we may be subject to a product liability claim for which we haves no coverage. We may have to pay any amounts awarded by a court or negotiated in a settlement that exceed our coverage limitations or that are not covered by our insurance, and itwe may not have, or be able to obtain, sufficient capital to pay such amounts.

We may acquire businesses, assets or products, or form strategic alliances, in the future, and we may not realize the benefits of such acquisitions.

We may acquire additional businesses, assets or products, form strategic alliances or create joint ventures with third parties that we believe will complement or augment our existing business. If we acquire businesses with promising markets or technologies, we may not be able to realize the benefit of acquiring such businesses if we are unable to successfully integrate them with our existing operations and company culture. We cannot assure you that, following any such acquisition, we will achieve the expected synergies to justify the transaction.

Risks Related to Development, Regulatory Approval and Commercialization

If our studies encounter difficulties or fail to demonstrate safety and efficacy to the satisfaction of the FDA and comparable non-U.S. regulators, we may incur additional costs or experience delays in completing, or ultimately be unable to complete, the development and commercialization of our product candidates.

We are not permitted to commercialize, market, promote or sell any product candidate in the United States without obtaining marketing approval from the FDA. Comparable non-U.S. regulatory authorities impose similar restrictions. We may never receive such approvals. We must complete extensive preclinical development and clinical studies to demonstrate the safety and efficacy of our product candidates in humans before we will be able to obtain these approvals.

ClinicalPreclinical and clinical testing is expensive, difficult to design and implement, can take many years to complete, can fail for many reasons, and is inherently uncertain as to outcome. We have not previously submitted an NDA to the FDA or similar drug approval filings to comparable non-U.S. regulatory authorities for any product candidates.

Any inability to successfully complete preclinical and clinical development could result in additional costs to us and impair our ability to generate revenues from product sales, regulatory and commercialization milestones and royalties. In addition, if (1) we are required to conduct additional clinical studies or other testing of our product candidates beyond the studies and testing that we contemplate, (2) we are unable to successfully complete clinical studies of our product candidates or other testing, (3) the results of these studies or tests are unfavorable, uncertain or are only modestly favorable, or (4) there are unacceptable safety concerns associated with our product candidates, we, in addition to incurring additional costs, may:

Enrollment and retention of patients in clinical trials is an expensive and time-consuming process and could be made more difficult or rendered impossible by multiple factors outside our control.

We may encounter delays or difficulties in enrolling, or be unable to enroll, a sufficient number of patients to complete any of our clinical trials on its current timelines, or at all, and even once enrolled we may be unable to retain a sufficient number of patients to complete any of our trials. Enrollment in our clinical trials may be slower than we anticipate, leading to delays in our development timelines. For example, we may face difficulty enrolling or maintaining a sufficient number of patients in our clinical trials due to the existing alternative treatments approved for the treatment of any of our targeted indications, such as topical corticosteroids or topical steroid-free therapies for atopic dermatitis or psoriasis, as patients may decline to enroll or decide to withdraw from our clinical trials due to the risk of receiving placebo. Patient enrollment and retention in clinical trials depends on many factors, including the size of the patient population, the nature of the trial protocol, our ability to recruit clinical trial investigators with the appropriate competencies and experience, the existing body of safety and efficacy data with respect to the study drug, the number and nature of competing treatments and ongoing clinical trials of competing drugs for the same indication, the proximity of patients to clinical sites, the eligibility criteria for the trial and the proportion of patients screened that meets those criteria, our ability to obtain and maintain patient consents, and our ability to successfully complete prerequisite studies before enrolling certain patient populations.

Furthermore, any negative results or new safety signals we may report in clinical trials of our product candidates may make it difficult or impossible to recruit and retain patients in other clinical trials. Similarly, negative results reported by our competitors about their drug candidates may negatively affect patient recruitment in our clinical trials. Also, marketing authorization of competitors in this same class of drugs may impair our ability to enroll patients into our clinical trials, delaying or potentially preventing it from completing recruitment of one or more of our trials.

Delays or failures in planned patient enrollment or retention may result in increased costs, program delays or both, which could have a harmful effect on our ability to develop our product candidates or could render further development impossible. In addition, we expect to rely on CROs and clinical trial sites to ensure proper and timely conduct of our future clinical trials, and, while we intend to enter into agreements governing their services, we will be limited in our ability to compel their actual performance.

We may not be able to meet requirements for the chemistry, manufacturing and control of our drug product candidates.

In order to receive approval of our products by the FDA and comparable foreign regulatory authorities, we must show that we and our contract manufacturing partners are able to characterize, control and manufacture our drug products safely and in accordance with regulatory requirements. This includes synthesizing the active ingredient, developing an acceptable formulation, performing tests to adequately characterize the formulated product, documenting a repeatable manufacturing process, and demonstrating that our drug products meet stability requirements. Meeting these chemistry, manufacturing and control (“CMC”) requirements is a complex task that requires specialized expertise. If we are not able to meet the CMC requirements, we may not be successful in getting our products approved.

We face significant competition from other biotechnology and pharmaceutical companies that currently are targeting medical dermatological indications that we are studying, and our operating results will suffer if we fail to compete effectively.

The markets for dermatological therapies are competitive and are characterized by significant technological development and new product introduction. For example, there are several large and small pharmaceutical companies focused on delivering therapeutics for our targeted inflammatory and medical dermatological indications. We anticipate that, if we obtain regulatory approval of our product candidates, we will face significant competition from other approved therapies or drugs that become available in the future for the treatment of our target indications that we are studying. If approved, our product candidates may also compete with unregulated, unapproved and off-label treatments. Even if another branded or generic product or an over-the-counter, or OTC, product is less effective than our product candidates, a less effective branded, generic or OTC product may be more quickly adopted by physicians and patients than our competing product candidates based upon cost or convenience. Certain of our product candidates, if approved, will present novel therapeutic

approaches for the approved indications and will have to compete with existing therapies, some of which are widely known and accepted by physicians and patients. To compete successfully in this market, we will have to demonstrate that the relative cost, safety and efficacy of our approved products, if any, provide an attractive alternative to existing and other new therapies to gain a share of some patients'patients’ discretionary budgets and for physicians'physicians’ attention within their clinical practices. Some of the companies that offer competing products also have a broad range of other product offerings, large direct sales forces and long-term customer relationships with our target physicians, which could inhibit our market penetration efforts. Such competition could lead to reduced market share for our product candidates and contribute to downward pressure on the pricing of our product candidates, which could harm our business, financial condition, operating results and prospects.

There are currently no approved topical isotretinoin products available in the United States. We are currently aware of several companiesone other program that are working to develop drugsis active in the CI space that wouldmay compete against our product candidates, such as Mayne Pharma Group Limited, whichwith the TMB-001 program. The program in development is developing trifarotene for lamellar ichthyosis,from Krystal Biotech, Inc., whichwhose product KB105 is developingcurrently the subject of an ongoing Phase 2 clinical trial for the treatment of TGM1-deficient ARCI. KB105 is a replication-incompetent, non-integrating HSV-1 vector expressing human TGM1 formulated as a topical gel. The Phase 2 clinical trial involves a randomized, placebo-controlled intra-patient parallel study. Up to 15 children or adults, aged 6 months and older are planned for transglutaminase-1 deficient autosomal recessive congenital ichthyosis,this Phase 2 study. The Phase 2 trial is expected to begin in March 2023 and Nobelpharma Co., Ltd.finish in April 2024. As of March 2023, the trial was active but had not yet begun recruiting (NCT05735158). It is the belief of management that the TMB-001 program is significantly more advanced the KB105 program in terms of development timelines. We believe that the TMB-001 program has additional key differentiators that we believe to be relevant including: a broader range of disease states being studied (Lamellar Ichthyosis including the TGM1 mutations but also other mutations and Aucta Pharmaceuticals, Inc., which are developingXLRI); a topical rapamycin for FAsformulation versus gene therapy and a known mechanism of action in TSC.

the disease.

Many of our existing or potential competitors have substantially greater financial, technical and human resources than we do and significantly greater experience in the discovery and development of product candidates, as well as in obtaining regulatory approvals of those product candidates in the United States and in foreign countries. Many of our current and potential future competitors also have significantly more experience commercializing drugs that have been approved for marketing. Mergers and acquisitions in the pharmaceutical and biotechnology industries could result in even more resources being concentrated among a smaller number of our competitors. Competition may reduce the number and types of patients available to us to participate in clinical trials, because some patients who might have opted to enroll in our trials may instead opt to enroll in a trial being conducted by one of our competitors.

Due to less stringent regulatory requirements in certain foreign countries, there are many more dermatological products and procedures available for use in those international markets than are approved for use in the United States. In certain international markets, there are also fewer limitations on the claims that our competitors can make about the effectiveness of their products and the manner in which they can market their products. As a result, we expect to face more competition in these markets than in the United States.

Our ability to compete successfully will depend largely on our ability to:

The availability of our competitors'competitors’ products could limit the demand and the price we are able to charge for any product candidate we develop. The inability to compete with existing or subsequently introduced drugs or OTC treatments would have an adverse impact on our business, financial condition and prospects.

If the market opportunities for our product candidates are smaller than we believe they are,them to be, our revenues may be adversely affected and our business may suffer. Because the target patient populations of our product candidates are small, we must be able to successfully identify patients and capture a significant market share to achieve and maintain profitability.

We focus our research and product development on treatments for orphan dermatology indications. Our projections of both the number of people who have failed other therapies or have limited medical options, are based on estimates. These estimates may prove to be incorrect and new studies may change the estimated incidence or prevalence. The number of patients in the United States and elsewhere may turn out to be lower than expected or may not be otherwise amenable to treatment with our products, or new patients may become increasingly difficult to identify or gain access to, all of which would adversely affect our results of operations and business. Additionally, because our target patient populations are small, we will be required to capture a significant market share to achieve and maintain profitability.

The regulatory approval processes of the FDA and comparable foreign authorities are lengthy, time consuming and inherently unpredictable. Even if we obtain approval for a product candidate in one country or jurisdiction, we may never obtain approval for or commercialize it in any other jurisdiction, which would limit our ability to realize our full market potential.

Prior to obtaining approval to commercialize any of our product candidates in any jurisdiction, we or our collaborators must demonstrate with substantial evidence from well-controlled clinical trials, and to the satisfaction of the FDA or comparable foreign regulatory agencies, that such product candidates are safe and effective for their intended uses. Results from nonclinical studies and clinical trials can be interpreted in different ways. Even if we believe the nonclinical or clinical data for a product candidate are promising, such data may not be sufficient to support approval by the FDA and other regulatory authorities. In order to market any products in any particular jurisdiction, we must establish and comply with numerous and varying regulatory requirements on a country-by-country basis regarding safety and efficacy. Approval by the FDA does not ensure approval by regulatory authorities in any other country or jurisdiction outside the United States. In addition, clinical trials conducted in one country may not be accepted by regulatory authorities in other countries, and regulatory approval in one country does not guarantee regulatory approval in any other country. Approval processes vary among countries and can involve additional product testing and validation, as well as additional administrative review periods. Seeking regulatory approval could result in difficulties and costs for us and require additional nonclinical studies or clinical trials, which could be costly and time consuming. Regulatory requirements can vary widely from country to country and could delay or prevent the introduction of our products in those countries. We do not have any product candidates approved for sale in any jurisdiction, including in international markets, and we do not have experience in obtaining regulatory approval. If we fail to comply with regulatory requirements in international markets or to obtain and maintain required approvals, or if regulatory approvals in international markets are delayed, our target market will be reduced and our ability to realize the full market potential of any product we develop will be unrealized.

We may not be able to obtain or maintain orphan drug designation or exclusivity for our product candidates.

We have obtained orphan drug designation for TMB-001 TMB-002 and TMB-003 and may seek additional orphan drug designation for other product candidates. Regulatory authorities in some jurisdictions, including the United States and Europe, may designate drugs for relatively small patient populations as orphan drugs. Under the Orphan Drug Act, the FDA may designate a product as an orphan drug if it is a drug intended to treat a rare disease or condition, which is generally defined as a patient population of fewer than 200,000 individuals in the United States. Generally, if a product with an orphan drug

designation subsequently receives the first marketing approval for the indication for which it has such designation, the product is entitled to a period of marketing exclusivity, which precludes the FDA or the European Medicines Agency ("EMA")EMA from approving another marketing application for the same indication for that drug during that time period. For a product that obtains orphan drug designation on the basis of a plausible hypothesis that it is clinically superior to the same drug that is already approved for the same indication, in order to obtain orphan drug exclusivity upon approval, clinical superiority of such product to this same drug that is already approved for the same orphan indication must be demonstrated. The exclusivity period is seven years in the United States and ten years in Europe. The European exclusivity period can be reduced to six years if a drug no longer meets the criteria for orphan drug designation or if the drug is sufficiently profitable so that market exclusivity is no longer justified. Orphan drug exclusivity may be lost if the FDA or the EMA determines that the request for designation was materially defective or if the manufacturer is unable to assure sufficient quantity of the drug to meet the needs of patients with the rare disease or condition.

We cannot assure you that any future application with respect to any other product candidate will be granted. If we are unable to obtain orphan drug designation in the United States, we will not be eligible to obtain the period of market exclusivity that could result from orphan drug designation or be afforded the financial incentives associated with orphan drug designation. Even if we obtain orphan drug exclusivity for a product, that exclusivity may not effectively protect the product from competition because different drugs can be approved for the same condition. Even after an orphan drug is approved, the FDA can subsequently approve the same drug for the same condition if the FDA concludes that the later drug is clinically superior in that it is shown to be safer, more effective or makes a major contribution to patient care.

Any product candidate for which we obtain marketing approval, along with the manufacturing processes, qualification testing, post-approval clinical data, labeling and promotional activities for such product, will be subject to continual and additional requirements of the FDA and other regulatory authorities.

These requirements include submissions of safety and other post-marketing information, reports, registration and listing requirements, good manufacturing practices, or GMP requirements relating to quality control, quality assurance and corresponding maintenance of records and documents, and recordkeeping. Even if marketing approval of our product candidates is granted, the approval may be subject to limitations on the indicated uses for which the product may be marketed or to conditions of approval, or contain requirements for costly post-marketing testing and surveillance to monitor the safety or efficacy of the product. The FDA closely regulates the post-approval marketing and promotion of pharmaceutical products to ensure such products are marketed only for the approved indications and in accordance with the provisions of the approved labeling.

In addition, later discovery of previously unknown problems with our products, manufacturing processes, or failure to comply with regulatory requirements, may lead to various adverse results, including:

If any of our product candidates receive marketing approval and we, or others, later discover that the drug is less effective than previously believed or causes undesirable side effects that were not previously identified, our ability to market such drug could be compromised.

Clinical studies of our product candidates are conducted in carefully defined subsets of patients who have agreed to enter into clinical studies. Consequently, it is possible that our clinical studies may indicate an apparent positive effect of a product candidate that is greater than the actual positive effect, if any, or alternatively fail to identify undesirable side effects. If, following approval of any of our product candidates, we, or others, discover that the drug is less effective than previously believed or causes undesirable side effects that were not previously identified, any of the following adverse events could occur:

Any of these events could have a material and adverse effect on our operations and business and could adversely impact the price of our common stock.

The FDA and other regulatory agencies actively enforce the laws and regulations prohibiting the promotion of off-label uses. If we are found or alleged to have improperly promoted off-label uses, we may become subject to significant liability.

The FDA and other regulatory agencies strictly regulate the promotional claims that may be made about prescription products, as our product candidates would be, if approved. In particular, a product may not be promoted for uses that are not approved by the FDA or such other regulatory agencies as reflected in the product'sproduct’s approved labeling. If we are found to have promoted such off-label uses, we may become subject to significant liability. The federal government has levied

large civil and criminal fines against companies for alleged improper promotion and has enjoined several companies from engaging in off-label promotion. The FDA has also requested that companies enter into consent decrees or permanent injunctions under which specified promotional conduct is changed or curtailed. If we cannot successfully manage the promotion of our product candidates, if approved, we could become subject to significant liability, which would harm our business and financial condition.

There are risks associated with scaling up manufacturing to commercial scale. If our contract manufacturers are unable to manufacture our drug candidates on a commercial scale, this could potentially delay regulatory approval and commercialization or materially adversely affect our results of operations.

There are risks associated with scaling up manufacturing to commercial volumes including, among others, cost overruns, technical problems with process scale-up, process reproducibility, stability issues, and lot consistency. We have limited experience contracting with third parties to manufacture our drug candidates and will need to be able to successfully do so. Even if we obtain regulatory approval for our drug candidates, there is no assurance that our contract manufacturers will be able to manufacture the approved products to specifications acceptable to the FDA or other regulatory authorities, to produce them in sufficient quantities to meet the requirements for the potential launch of the product or to meet potential future demand. If our manufacturers are unable to produce sufficient quantities of approved products for commercialization, either on a timely basis or at all, our commercialization efforts would be impaired, which would have a material adverse effect on our business, financial condition, results of operations and growth prospects.

If we obtain approval to commercialize any of our products outside of the United States, a variety of risks associated with international operations could harm itsour business.

If any of our product candidates is approved for commercialization outside of the United States, we expect that we will be subject to additional risks related to entering into international business relationships, including:

Recently enactedLegislative and future legislationregulatory changes may increase the difficulty and cost for us to obtain marketing approval of and commercialize our drug candidates and affect the prices we may obtain.

In the United States and some foreign jurisdictions, there have been a number of legislative and regulatory changes and proposed changes regarding the healthcare system that could prevent or delay marketing approval for our drug candidates, restrict or regulate post-approval activities and affect our ability to profitably sell our drug candidates. LegislativeIn particular, legislative and regulatory proposals have been made to reduce government reimbursements for drugs, expand post-approval requirements and restrict sales and promotional activities for pharmaceutical products. We do not know whether additional legislative changes will be enacted, or whether the FDA regulations, guidance or interpretations will be changed, or what the impact of such changes on the marketing approvals of our drug candidates, if any, may be. In addition, increased scrutiny by the U.S. Congress of the FDA's approval process may significantly delay or prevent marketing approval, as well as subject us to more stringent product labeling and post-marketing testing and other requirements.

In the United States, under the Medicare Modernization Act ("MMA"), Medicare Part D provides coverage to the elderly and disabled for outpatient prescription drugs by approving and subsidizing prescription drug plans offered by private insurers. The MMA also authorizes Medicare Part D prescription drug plans to use formularies where they can limit the number of drugs that will be covered in any therapeutic class. The Part D plans use their formulary leverage to negotiate rebates and other price concessions from drug manufacturers. Also, under the MMA, Medicare Part B provides coverage to the elderly and disabled for physician-administered drugs on the basis of the drug's average sales price, a price that is calculated according to regulatory requirements and that the manufacturer reports to Medicare quarterly.

Both Congress and the Centers for Medicare & Medicaid Services ("CMS"(“CMS”), the agency that administers the Medicare program, from time to time consider legislation, regulations, or other initiatives to reduce drug costs under Medicare Parts B and D. For example, under the 2010 Affordable Care Act (the "ACA"), drug manufacturers are required to provide a significant discount on prescriptions for branded drugs filled while the beneficiary is in the Medicare Part D coverage gap, also known as the "donut hole." There have been legislative proposals to repeal the 'non-interference"“non-interference” provision of the MMA to allow CMS to leverage the Medicare market share to negotiate larger Part D rebates. Further cost reduction efforts could decrease the coverage and price that we receive for our drug candidates and could seriously harm our business. Private payors often follow Medicare coverage policy and payment limitations in setting their own reimbursement rates, and any reduction in reimbursement under the Medicare program may result in a similar reduction in payments from private payors.

The ACA is intended21^st Century Cures Act made changes to broaden access to health insurancethe FDA approval process for drugs and reducemedical devices. We do not know whether additional legislative changes will be enacted, or constrainwhether the growthFDA regulations, guidance or interpretations will be changed, or what the impact of healthcare spending. Further,such changes on the ACA imposes a significant annual fee on companies that manufacture or import branded prescriptionmarketing approvals of our drug products. It alsocandidates, if any, may be. In addition, increased scrutiny by the amountU.S. Congress of the rebates drug manufacturers must pay to state Medicaid programs, required that Medicaid rebates be paid on managed Medicaid utilization, and increased the additional rebate on "line extensions" (suchFDA’s approval process may significantly delay or prevent marketing approval, as extended release formulations) of solid oral dosage forms of branded products. The law also contains substantial provisions affecting fraud and abuse compliance and transparency, which may requirewell as subject us to modify ourmore stringent product labeling and post-marketing testing and other requirements.

Our business practices with healthcare practitioners,also may be affected by legislative and incur substantial costs to ensure compliance.

Certain legislativeregulatory changes have been proposedat the state and adopted in the United States since the ACA was enacted. Severallocal level. For example, several states have adopted or are considering adopting laws that require reporting of payments to healthcare professionals and/or require pharmaceutical companies to provide notice prior to raising prices and to justify price increases. We expect that additional healthcare reform measures will be adopted in the future, any of which could limit the amounts that federal and state governments will pay for healthcare products and services, and in turn could significantly reduce the projected value of certain development projects and reduce itsour profitability.

Any fast track designation or grant of priority review status by the FDA may not actually lead to a faster development or regulatory review or approval process, nor will it assure FDA approval of our product candidates. Additionally, our product candidates may treat indications that do not qualify for priority review vouchers.

In April 2022, the FDA granted Fast Track designation to TMB-001 for the treatment of XLRI and ARCI. In May 2022, the FDA granted Breakthrough Therapy designation to TMB-001 for the treatment of CI. We may also seek fast track designation for our other product candidates in the future or priority review of applications for approval of our product candidates for certain indications. If a drug is intended for the treatment of a serious or life-threatening condition and the drug demonstrates the potential to address unmet medical needs for this condition, the drug sponsor may apply for FDA fast track designation. If a product candidate offers major advances in treatment, the FDA may designate us eligible for priority review. The FDA has broad discretion whether or not to grant these designations, so even if we believe a particular product candidate is eligible for these designations, we cannot assure you that the FDA would decide to grant them. Even

if we do receive fast track designation or priority review, we may not experience a faster development process, review or approval compared to conventional FDA procedures. The FDA may withdraw fast track designation if we believe that the designation is no longer supported by data from our clinical development program.

We may seek rare pediatric disease designation for TMB-003 for the treatment of moderate to severe scleroderma; however, an NDA for TMB-003, if approved, may not meet the eligibility criteria for a priority review voucher.

We may seek rare pediatric disease designation for TMB-003 for the treatment of scleroderma. Designation of a drug as a drug for a rare pediatric disease does not guarantee that an NDA for such drug will meet the eligibility criteria for a rare pediatric disease priority review voucher at the time the application is approved. Under the FDCA, we will need to request a rare pediatric disease priority review voucher in our NDA for TMB-003. The FDA may determine that an NDA for TMB-003, if approved, does not meet the eligibility criteria for a priority review voucher, including for the following reasons:

The authority for the FDA to award rare pediatric disease priority review vouchers for drugs that have received rare pediatric disease designation prior to September 30, 2020 currently expires on September 30, 2022. If an NDA for TMB-003 is not be approved prior to September 30, 2022, regardless of whether it meets the criteria for a rare pediatric disease priority review voucher, it will not be eligible for a priority review voucher. However, it is also possible the authority for FDA to award rare pediatric disease priority review vouchers will be further extended through Federal lawmaking.

Risks Related to Our Dependence on Third Parties

We rely, and expect to continue to rely, on third parties to conduct our clinical studies, and those third parties may not perform satisfactorily, including failing to meet deadlines for the completion of such studies.

We currently rely on CROs to conduct our clinical studies. We expect to continue to rely on third parties, such as CROs, clinical data management organizations, medical institutions and clinical investigators, to conduct itsour clinical studies. Our agreements with these third parties generally allow the third-party to terminate the agreement at any time. If we are required to enter into alternative arrangements because of any such termination the introduction of our product candidates to market could be delayed.

Our reliance on these third parties for research and development activities will reduce our control over these activities but will not relieve us of our responsibilities. For example, we design our clinical studies and will remain responsible for ensuring that each of our clinical studies are conducted in accordance with the general investigational plan and protocols for the study. Moreover, the FDA requires us to comply with cGCPs for conducting, recording and reporting the results of clinical studies to assure that data and reported results are credible and accurate and that the rights, integrity and confidentiality of study participants are protected. Our reliance on third parties that we do not control does not relieve us of these responsibilities and requirements. We are also required to register ongoing clinical studies and post the results of completed clinical studies on a government-sponsored database, Clinicaltrials.gov, within specified timeframes. Failure to do so can result in fines, adverse publicity and civil and criminal sanctions.

Furthermore, these third parties may also have relationships with other entities, some of which may be our competitors. If these third parties do not successfully carry out their contractual duties, meet expected deadlines or conduct our clinical studies in accordance with regulatory requirements or our stated protocols, we will not be able to obtain, or may be delayed in obtaining, marketing approvals for our product candidates and will not be able to, or may be delayed in our efforts to, successfully commercialize our product candidates.

We also expect to rely on other third parties to store and distribute drug supplies for our clinical studies. Any performance failure on the part of our distributors could delay clinical development or marketing approval of our product candidates or commercialization of our products, producing additional losses and depriving us of potential product revenue.

We may seek to enter into collaborations with third parties for the development and commercialization of itsour product candidates. If we fail to enter into such collaborations, or such collaborations are not successful, we may not be able to capitalize on the market potential of our product candidates.

We may seek third-party collaborators for development and commercialization of our product candidates. Our likely collaborators for any marketing, distribution, development, licensing or broader collaboration arrangements include large and mid-size pharmaceutical companies, regional and national pharmaceutical companies, non-profit organizations, government agencies, and biotechnology companies. We are currently party to a limited number of such arrangements and have limited control over the amount and timing of resources that our collaborators dedicate to the development or commercialization of our product candidates. Our ability to generate revenues from these arrangements will depend on our collaborators'collaborators’ abilities to successfully perform the functions assigned to them in these arrangements.

Collaborations involving itsour product candidates currently pose, and will continue to pose, the following risks to it:

us:

Collaboration agreements may not lead to development or commercialization of our product candidates in the most efficient manner or at all. If a collaborator of ours were to be involved in a business combination, the continued pursuit and emphasis on our product development or commercialization program could be delayed, diminished or terminated.

If we are not able to establish collaborations, we may have to alter our development and commercialization plans.

Our drug development programs and the potential commercialization of our product candidates will require substantial additional cash to fund expenses. We may decide to collaborate with pharmaceutical and biotechnology companies for the development and potential commercialization of our product candidates.

We face significant competition in seeking appropriate collaborators. Whether we reach a definitive agreement for a collaboration will depend, among other things, upon its assessment of the collaborator'scollaborator’s resources and expertise, the terms and conditions of the proposed collaboration and the proposed collaborator'scollaborator’s evaluation of a number of factors. Those factors may include the design or results of preclinical studies or clinical studies, the likelihood of approval by the FDA or similar regulatory authorities outside the United States, the potential market for the subject product candidates, the costs and complexities of manufacturing and delivering such product candidate to patients, the potential of competing products, the existence of uncertainty with respect to its ownership of technology, which can exist if there is a challenge to such ownership without regard to the merits of the challenge and industry and market conditions generally. The collaborator may also consider alternative product candidates or technologies for similar indications that may be available to collaborate on and whether such a collaboration could be more attractive than the one with us for our product candidates. We may also be restricted under future license agreements from entering into agreements on certain terms with potential

collaborators. Collaborations are complex and time-consuming to negotiate and document. In addition, there have been a significant number of recent business combinations among large pharmaceutical companies that have resulted in a reduced number of potential future collaborators.

We may not be able to negotiate collaborations on a timely basis, on acceptable terms, or at all. If we are unable to do so, we may have to curtail the development of our product candidates, reduce or delay our development programs, delay our potential commercialization or reduce the scope of any sales or marketing activities, or increase our expenditures and undertake development or commercialization activities at our own expense. If we elect to increase our expenditures to fund development or commercialization activities on our own, we may need to obtain additional capital, which may not be available to us on acceptable terms or at all. If we do not have sufficient funds, we may not be able to further develop our product candidates or bring them to market and generate product revenue.

Risks Relating to Our Intellectual Property

It is difficult and costly to protect our intellectual property rights, and we cannot ensure the protection of these rights.

Our commercial success will depend, in part, on obtaining and maintaining additional patent protection for our technologies, products and processes, successfully defending these patents against third-party challenges and successfully enforcing these patents against third party competitors. The patent positions of pharmaceutical companies can be highly uncertain and involve complex legal, scientific and factual questions for which important legal principles remain unresolved. Changes in either the patent laws or in interpretations of patent laws may diminish the value of our intellectual property. Accordingly, we cannot predict the breadth of claims that may be allowable in our pending applications or, the enforceability of our existing and future patents.

The degree of our current and future protection for our proprietary rights is uncertain, because legal means afford only limited protection and may not adequately protect our rights, permit us to gain or keep our competitive advantage, or provide us with any competitive advantage at all. For example, others have filed, and in the future are likely to file, patent applications covering products and technologies, such as trifarotene and KB105 as described above, that are similar or competitive to our product candidates, or important to our business. We cannot be certain that any patents or patent application owned by a third party will not have priority over patents and patent applications filed by us, or that we will not be involved in interference, opposition or invalidity proceedings before United States or foreign patent offices.

We also rely on trade secrets to protect technology, especially in cases when we believe patent protection is not appropriate or obtainable. However, trade secrets are difficult to protect. While we require employees, academic collaborators, consultants and other contractors to enter into confidentiality agreements, we may not be able to adequately protect our trade secrets or other proprietary or licensed information. Typically, research collaborators and scientific advisors have rights to publish data and information in which we may have rights. If we cannot maintain the confidentiality of our proprietary technology and other confidential information, our ability to receive patent protection and our ability to protect valuable information owned by us may be imperiled. Enforcing a claim that a third-party entity illegally obtained and is using any of our trade secrets is expensive and time consuming, and the outcome is unpredictable. In addition, courts are sometimes less willing to protect trade secrets than patents. Moreover, our competitors may independently develop equivalent knowledge, methods and know-how.

If we fail to maintain or obtain additional patent protection or trade secret protection for our technologies, third parties could use our proprietary information, which could impair our ability to compete in the market and adversely affect our ability to generate revenues and attain profitability.

If we fail to obtain or maintain patent protection or trade secret protection for our technologies, third parties could use our proprietary information, which could impair its ability to compete in the market and adversely affect its ability to generate revenues and attain profitability.

We may also develop trademarks to distinguish our products from the products of our competitors. We cannot guarantee that any trademark applications filed by us or our business partners will be approved. Third parties may also oppose such trademark applications, or otherwise challenge our use of the trademarks. In the event that the trademarks we use are successfully challenged, we could be forced to rebrand our products, which could result in loss of brand recognition, and could require us to devote resources to advertising and marketing new brands. Further, we cannot provide assurance that competitors will not infringe the trademarks we use, or that we will have adequate resources to enforce these trademarks.

We have in-licensed and acquired portions of our intellectual property, and if we fail to comply with our obligations under these arrangements, we could lose such intellectual property rights or owe damages to the licensor and/or seller of such intellectual property.

We are a party to a license agreement with AFT pursuant to which we licensed certain exclusive and co-exclusive rights to develop, manufacture and market drug candidates from AFT in certain territories. We have also entered into two acquisition agreements with Patagonia pursuant to which we acquired rights to certain intellectual property worldwide. These agreements are important to our business, and we may enter into additional license and acquisition agreements as well as license agreements and other intellectual property arrangements in the future. Certain of our in-licensed and acquired intellectual property covers, or may cover, other potential developmental candidates. Our existing license agreement and acquisition agreements impose, and we expect that future agreements will impose, various milestone payment, royalty and other obligations on us. If there is any conflict, dispute, disagreement or issue of non-performance between us and our collaborators regarding our rights or obligations under such agreements, including any such conflict, dispute or disagreement arising from our failure to satisfy payment obligations under any such agreement, we may owe damages, our collaborators may have a right to terminate the affected license or rights, and our ability to utilize the affected intellectual property in our product discovery and development efforts and our ability to enter into collaboration or marketing agreements for an affected product candidate may be adversely affected.

Our product candidates may infringe the intellectual property rights of others, which could increase our costs and delay or prevent our development and commercialization efforts.

Our success depends in part on avoiding infringement of the proprietary technologies of others. The pharmaceutical industry has been characterized by frequent litigation regarding patent and other intellectual property rights. Identification of third party patent rights that may be relevant to our proprietary technology is difficult because patent searching is imperfect due to differences in terminology among patents, incomplete databases and the difficulty in assessing the meaning of patent claims. Additionally, because patent applications are maintained in secrecy until the application is published, we may be unaware of third-party patents that may be infringed by commercialization of our product candidates. There may be certain issued patents and patent applications claiming subject matter that we may be required to license in order to research, develop or commercialize our product candidates, and we do not know if such patents and patent applications would be available to license on commercially reasonable terms, or at all. Any claims of patent infringement asserted by third parties would be time-consuming and may:

Although no third party has asserted a claim of infringement against us, others may hold proprietary rights that could prevent our product candidates from being marketed. Any patent-related legal action against us claiming damages and seeking to enjoin commercial activities relating to itsour product candidates or our processes could subject us to potential liability for damages and require us to obtain a license to continue to manufacture or market our product candidates. We cannot predict whether we would prevail in any such actions or that any license required under any of these patents would be made available on commercially acceptable terms, if at all. In addition, we cannot be sure that it could redesign any of our product candidates or processes to avoid infringement, if necessary. Accordingly, an adverse determination in a judicial or administrative proceeding, or the failure to obtain necessary licenses, could prevent us from developing and commercializing any of our product candidates, which could harm our business, financial condition and operating results.

A number of companies have conducted research on dermatological therapies which resulted in the filing of many patent applications related to this research. If we were to challenge the validity of these or any issued United States patent in court, we would need to overcome a statutory presumption of validity that attaches to every issued United States patent. This means that, in order to prevail, we would have to present clear and convincing evidence as to the invalidity of the patent'spatent’s claims.

If we were to challenge the validity of these or any issued United States patent in an administrative trial before the Patent Trial and Appeal Board in the USPTO, we would have to prove that the claims are unpatentable by a preponderance of the evidence. There is no assurance that a jury and/or court would find in our favor on questions of infringement, validity or enforceability.

We may be subject to claims challenging the inventorship of its patents and other intellectual property.

Although we are not aware of any asserted third-party claims challenging inventorship on our patents or ownership of our intellectual property, we may in the future be subject to claims that former employees, strategic partners, commercial counterparties or other third parties associated with us or one of our predecessors in ownership of our product candidates have an interest in our patents or other intellectual property as an inventor or co-inventor. While it is our policy to require our employees and contractors who may be involved in the conception or development of intellectual property to execute agreements assigning such intellectual property to us, we cannot fully control the enforcement of these policies by third parties with which we contract, nor can we be certain that assignment agreements between us and our employees, between us and our counterparties, or between our counterparties and their employees or between our predecessors of ownership and their employees and counterparties, will effectively protect our interests as to any party who conceives or develops intellectual property that we regard as our own. Among other issues, the assignment of intellectual property rights may not be self-executing, the assignment agreements may be breached, or we may have disputes arise from conflicting obligations of consultants or others who are involved in developing our product candidates. As we approach potential commercialization of our product candidates, we are more closely analyzing all facts that we believe might be used to assert an inventorship claim against us. Determinations like these involve complex sets of fact and applications of sometimes-unsettled patent law, resulting in inherent uncertainties regarding ownership rights. Determining the history of development of certain of our intellectual property is made more difficult by the fact that certain of our intellectual property was developed by other companies for other indications before being acquired by us. Consequently, we cannot be sure that we have all of the documentary records relevant to such an analysis.

If claims challenging inventorship are made against us, we may need to resort to litigation to resolve those claims. If we fail in defending against any such claims, in addition to paying monetary damages, we may lose valuable intellectual property rights, such as exclusive ownership of valuable intellectual property rights or the right to assert those rights against third-parties marketing competing products. Even if we are successful in defending against such claims, litigation could result in substantial costs and be a distraction to management and other employees.

We may need to license intellectual property from third parties, and such licenses may not be available or may not be available on commercially reasonable terms.

A third party may hold intellectual property, including patent rights, that are important or necessary to the development of our product candidates. It may be necessary for us to use the patented or proprietary technology of third parties to commercialize itsour drug candidates, in which case itwe would be required to obtain a license from these third parties on commercially reasonable terms. Such a license may not be available, or it may not be available on commercially reasonable terms, in which case our business would be harmed.

The risks described elsewhere pertaining to our intellectual property rights also apply to the intellectual property rights that we in-license, and any failure by us or our licensors to obtain, maintain, defend and enforce these rights could harm our business. In some cases we may not have control over the prosecution, maintenance or enforcement of the patents that we license, and may not have sufficient ability to provide input into the patent prosecution, maintenance and defense process with respect to such patents, and our licensors may fail to take the steps that we believe are necessary or desirable in order to obtain, maintain, defend and enforce the licensed patents.

Changes in U.S. patent law or the patent law of other countries or jurisdictions could diminish the value of patents in general, thereby impairing our ability to protect itsour products.

The United States has recently enacted and implemented wide-ranging patent reform legislation. In addition, patent reform legislation may pass in the future that could lead to additional uncertainties and increased costs surrounding the prosecution, enforcement and defense of our patents and pending patent applications. The United States Supreme Court has ruled on several patent cases in recent years, either narrowing the scope of patent protection available in certain circumstances or weakening the rights of patent owners in certain situations. In addition to increasing uncertainty with regard to our ability to obtain patents in the future, this combination of events has created uncertainty with respect to the value of patents, once obtained. Depending on actions by the United States Congress, the federal courts and the USPTO, the laws and regulations governing patents could change in unpredictable ways that would weaken our ability to obtain new patents or to enforce patents that we have licensed or that we might obtain in the future. Similarly, changes in patent law and regulations in other countries or jurisdictions or changes in the governmental bodies that enforce them or changes in how the relevant governmental authority enforces patent laws or regulations may weaken our ability to obtain new patents or to enforce patents that we have licensed or that we may obtain in the future. We cannot predict future changes in the interpretation of patent laws or changes to patent laws that might be enacted into law by United States and foreign legislative bodies. Those changes may materially affect our patents or patent applications and our ability to obtain additional patent protection in the future. The United States federal government retains certain rights in inventions produced with its financial assistance under the Bayh-Dole Act. The federal government retains a "nonexclusive,“nonexclusive, nontransferable, irrevocable, paid-up license"license” for its own benefit. The Bayh-Dole Act also provides federal agencies with "march-in“march-in rights."” March-in rights allow the government, in specified circumstances, to require the contractor or successors in title to the patent to grant a "nonexclusive,“nonexclusive, partially exclusive, or exclusive license"license” to a "responsible“responsible applicant or applicants."” If the patent owner refuses to do so, the government may grant the license itself.

Our intellectual property agreements with third parties may be subject to disagreements over contract interpretation, which could narrow the scope of our rights to the relevant intellectual property or technology.

Certain provisions in our intellectual property agreements may be susceptible to multiple interpretations. The resolution of any contract interpretation disagreement that may arise could affect the scope of our rights to the relevant intellectual property or technology, or affect financial or other obligations under the relevant agreement, either of which could harm our business, financial condition, results of operations and prospects.

There are risks to our intellectual property based on our international business operations.

There are risks to technology and intellectual property that may result from us conducting business outside the United States, particularly in jurisdictions that do not have comparable levels of protection of corporate proprietary information

and assets such as intellectual property, trademarks, trade secrets, know-how and customer information and records. For instance, we may be exposed to material risks of theft of proprietary technology and other intellectual property, including technical data, business processes, data sets or other sensitive information. While these risks are common to many companies, conducting business in certain foreign jurisdictions, housing technology, data and intellectual property abroad, or licensing technology to joint ventures with foreign partners may have more significant exposure. The risk can be by direct intrusion wherein technology and intellectual property is stolen or compromised through direct intrusion including cyber intrusions and physical theft through corporate espionage, including with the assistance of insiders. In addition, our technology and intellectual property may be subject to theft or compromise via more indirect routes. For example, our products or components may be reverse engineered by joint venture partners or other parties, which could result in our patents being infringed or our know-how or trade secrets stolen.

We are a “smaller reporting company” and, as a result of the reduced disclosure and governance requirements applicable to smaller reporting companies, our common stock may be less attractive to investors.

We are a “smaller reporting company,” meaning that we are not an investment company, an asset-backed issuer, or a majority-owned subsidiary of a parent company that is not a “smaller reporting company,” and have either: (i) a public float of less than $250 million or (ii) annual revenues of less than $100 million during the most recently completed fiscal year and (A) no public float or (B) a public float of less than $700 million. As a “smaller reporting company,” we are subject to lesser disclosure obligations in our SEC filings compared to other issuers, including being able to provide simplified executive compensation disclosures in our filings and only being required to provide two years of audited consolidated financial statements in our annual reports. In addition, because our public float is less than $75 million, we are a “non-accelerated filer” under Rule 12b-2 of the Exchange Act and are exempt from the provisions of Section 404(b) of the Sarbanes-Oxley Act requiring that independent registered public accounting firms provide an attestation report on the effectiveness of internal control over financial reporting. Until such time as we cease to be a “smaller reporting company” or a “non-accelerated filer,” as applicable, such decreased disclosure in our SEC filings may make it harder for investors to analyze our operating results and financial prospects.

ITEM 1B. UNRESOLVED STAFF COMMENTS

None.

ITEM 2. PROPERTIES

We lease a 3,127 square foot office space at 110 Allen Road, Suite 401, Basking Ridge, New Jersey. Pursuant to the lease agreement entered into on March 10, 2021, this lease expires inon March 31, 2023.

We have entered into a lease for a 5,281 square foot office space at 3 Mountain View Road, Suite 100, Warren, New Jersey on February 8, 2023.  This lease expires on February 28, 2028. The current monthly rent at this location is $8,801.67. Pursuant to the terms of the lease, we have an option to terminate the lease effective as of the completion of the thirty-seventh full calendar month of the lease term, provided that certain conditions are met.

We also lease an 11,793 square foot office and laboratory space at 115 Nicholson Lane, San Jose, California 95134.California. This lease expires in December 2023. On February 17, 2020, we executed a sublease agreement covering the entire space for the remaining term of the lease. The current monthly rent at this location is $37,710, which includes common area maintenance charges.  The sublessee unexpectedly ceased making sublease payments in the fourth quarter of 2022 due substantial financial difficulties. We have been working with the owner of the property to market the location. The sublessee has been found to have made multiple alterations to the location without permits or the lessor’s approval and we have received an estimate for repairs to the existing space and possible costs to clean the location  and have accrued $150,000 at December 31, 2022.

ITEM 3. LEGAL PROCEEDINGS

We are not currently a party to any legal or governmental regulatory proceedings, nor is our management aware of any pending or threatened legal or government regulatory proceedings proposed to be initiated against us that would have a material adverse effect on our business, financial condition or operating results.

From time to time, we could become involved in disputes and various litigation matters that arise in the normal course of business. These may include disputes and lawsuits related to intellectual property, licensing, contract law and employee relations matters. Periodically, we review the status of significant matters, if any exist, and assess our potential financial exposure. If the potential loss from any claim or legal claim is considered probable and the amount can be estimated, we accrue a liability for the estimated loss. Legal proceedings are subject to uncertainties, and the outcomes are difficult to predict; therefore, accruals are based on the best information available at the time. As additional information becomes available, we reassess the potential liability related to pending claims and litigation.

ITEM 4. MINE SAFETY DISCLOSURES

Not applicable.

PART II

Our common stock is traded on the NYSE American under the symbol “TMBR.”

As of March 15, 2021,25, 2023, there were approximately 3764 registered holders of record of our common shares, based upon information received from our stock transfer agent. However, this number does not include beneficial owners whose shares were held of record by nominees, including broker dealers. We believe that there are a significantly larger number of beneficial owners of our common shares than the number of record holders.

Unregistered Sales of Equity Securities

None.

Equity Compensation Plan InformationDividends

The following table includes information as of December 31, 2020 forWe have never declared or paid cash dividends on our equity compensation plans:

(1) Includes shares ofcommon stock. We do not intend to declare or pay cash dividends on our common stock that remain available for purchase underthe foreseeable future, but currently intend to retain any future earnings to fund the development and growth of our 2020 Equity Incentive Plan.business. The payment of cash dividends if any, on the common stock will rest solely within the discretion of our board of directors and will depend, among other things, upon our earnings, capital requirements, financial condition, and other relevant factors.

​

ITEM 6. SELECTED FINANCIAL DATA

[RESERVED]

Not applicable.

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

​

The following Management’s DiscussionManagement's discussion and Analysisanalysis of Financial Condition and Results of Operations, or MD&A, is intended to help the reader understand our results of operations and financial condition. MD&Acondition is provided as a supplementintended to assist the reader in understanding and assessing significant changes and trends related to the results of operations and financial position of

our Company. This discussion and analysis should be read in conjunction with our audited consolidated financialItem 8, "“Financial Statements and Supplementary Data."” Certain statements and the accompanying notes to the consolidated financial statements and other disclosures included in this Annual Report on Form 10-K.Item 7 constitute forward-looking statements. Various risks and uncertainties, including those discussed in "Forward-Looking Statements" and Item 1A, "“Risk Factors,"” may cause our actual results, financial position, and cash used in operations to differ materially from these forward-looking statements. Our financial statements have been prepared in accordance with accounting principles generally accepted in the United States and are presented in U.S. dollars.

General

Overview

Timber Pharmaceuticals, Inc. (“Timber”, the “Company”, “we”, “us”) isWe are a clinical-stage biopharmaceutical company focused on the development and commercialization of treatments for orphan dermatologic diseases. Our investigational therapies have proven mechanisms-of-action backed by decades of clinical experience and well-established CMC (chemistry, manufacturing and control) and safety profiles. We are initially focused on developing non-systemic treatments for rare dermatologic diseases including congenital ichthyosis facial angiofibromas (“FAs”) tuberous sclerosis complex (“TSC”),or CI including X-linked recessive CI, or XLRI, and scleroderma.autosomal recessive CI, or ARCI and other sclerotic skin diseases. Our lead programs are TMB-001, TMB-002 and TMB-003.

stage program is TMB-001. TMB-003 is our earliest stage program.

TMB-001, a proprietarypatented topical formulation of isotretinoin is currently being evaluated in ausing our patented IPEG™ delivery system, completed its Phase 2b clinical trial or the CONTROL study, in the fourth quarter of 2021, for the treatment of moderate to severe subtypes of congenital ichthyosis (“CI”),CI, a group of rare genetic keratinization disorders that lead to dry, thickened, and scaling skin. This study demonstrated a clinically meaningful reduction in targeted and overall severity of CI along with a favorable safety profile. A prior Phase 1/2 study involving 19 patients with CI demonstrated safety and a signal of preliminary efficacy of TMB-001, as well as minimal systemic absorption. In 2018, theThe FDA (through its Orphan Products Grant program) awarded us the first tranche of a $1.5 million grant in the amount of $500,000 to support clinical trials evaluating TMB-001 throughTMB-001.

The product in its Orphan Products Grant program. In March 2020 and March 2021, the FDA awarded us the second and third tranches of the grant, respectively, eachearliest stage in the amount of $500,000.

TMB-002, a proprietary topical formulation of rapamycin,our pipeline is currently being evaluated in a Phase 2b clinical trial for the treatment of FAs in TSC, a multisystem genetic disorder resulting in the growth of hamartomas in multiple organs. TSC results from dysregulation in the mTOR pathway, and as a topical mTOR inhibitor, TMB-002 may address FAs in TSC without the systemic absorption of an oral agent.

TMB-003, a proprietary formulation of sitaxsentan,Sitaxsentan, a new chemical entity in the U.S., which is a selective endothelin-A receptor antagonist,antagonist. It is currently in preclinical development as a locally applied formulation for the treatment of scleroderma,sclerotic skin diseases. The two disease areas under consideration include: Lichen Sclerosis a rare chronic disease of vulvae and perianal areas, and Localized Scleroderma,a chromic connective tissue disorder (“CTD”) characterized by abnormal thickening of the skin.disease that also affects other organ systems.

In connection with the Merger (as defined below), we acquired the BPX-01 and BPX-04 assets. BPX-01 is a Phase 3 ready topical minocycline for the treatment of inflammatory lesions of acne vulgaris, and BPX-04 is a Phase 3 ready topical minocycline for the treatment of papulopustular rosacea. We will seekare seeking to monetize these assets through a license, co-development, or sale.

Corporate History

We have a limited operating history as we were formed on February 26, 2019. Since inception, our operations have focused on establishing its intellectual property portfolio, including acquiring rights to the proprietary formulations of isotretinoin, rapamycin and Sitaxsentan, as described above, organization and staffing of the Company, business planning, raising capital, and conducting clinical trials. We have financed our operations with $46 million through capital contributions over the past three years.

Since inception, we have incurred significant operating losses. For the year ended December 31, 2022, our net loss was $19.4 million. As of December 31, 2022, we had an accumulated deficit of approximately $48.3 million. We expect to continue to incur significant expenses and operating losses for the foreseeable future. We anticipate that our expenses will increase significantly in connection with our ongoing activities, as we continue to develop the pipeline of programs.

Merger with BioPharmX Corporation

On May 18, 2020, we completed our business combination with BioPharmX Corporation (“BioPharmX”) completed its business combination with Timber Pharmaceuticals LLC, a Delaware limited liability company (“Timber Sub”), in accordance with the terms of the Agreement and Plan of Merger and Reorganization, dated as of January 28, 2020  (the “Merger Agreement”), by and among

BioPharmX, Timber SubPharmaceuticals, LLC, a Delaware limited liability company (“Timber Sub”) and BITI Merger, Inc., a Delaware corporation and wholly-owned subsidiary of the CompanyBioPharmX (“Merger Sub”), as amended by Amendment No. 1 thereto made and entered into as ofon March 24, 2020 (the “First Amendment”) and Amendment No. 2 thereto made and entered into(and as ofsubsequently amended on April 27, 2020  (the “Second Amendment”) (the Merger Agreement, as amended, by the First Amendment and the Second Amendment, the “Amended Merger“Merger Agreement”), pursuant to which Merger Sub merged with and into Timber Sub, with Timber Sub surviving as aour wholly-owned subsidiary of the Company (the “Merger”). In connection with and immediately prior to the completion of, the Merger, BioPharmX effected a reverse stock split of the Company’sshares of common stock, par value $0.001 per share (the “Common Stock”), at a ratio of 1-for-12 (the “Reverse“2020 Reverse Stock Split”). Immediately afterFollowing the completion of the Merger, BioPharmXwe changed itsour name to “Timber Pharmaceuticals, Inc.” and the officers and directors of Timber Sub became the officers and directors of theour Company.

Under the terms of the Amended Merger Agreement, BioPharmX issued shares of Common Stock to the holders of common units of Timber Sub. Immediately afterIn connection with the Merger, there were approximately 11,849,031 shares of Common Stock outstanding (after the Reverse Stock Split). Pursuant to the terms of the Amended Merger Agreement, the former holders of common units11.68 VARs of Timber Sub (including the Investors, as defined below, but excluding VARs, as defined below) owned in the aggregate approximately 88.5% of the outstanding Common Stock, with the Company’s stockholders immediately prior to the Merger owning approximately 11.5% of the outstanding Common Stock. The number of shares of Common Stock issued to the holders of common units of Timber Sub for each common unit of Timber Sub outstanding immediately prior to the Merger was calculated using an exchange ratio of approximately 629.57 shares of Common Stock for each Timber Sub unit. In addition, the 584 Value Appreciation Rights of Timber Sub (“VARs”) that were outstanding immediately prior to Merger became denoted and payable in 367,6707,353 shares of Common Stockcommon stock at the effective time of the Merger (the “Effective Time”). Further, the holder of the 1,819,289 preferred units of Timber Sub outstanding immediately prior to the Merger received 1,819 shares of the newly created convertible Series A preferred stock (the “Series A Preferred Stock”) at the Effective Time.

In connection with the Merger Agreement, on March 27, 2020, Timber Sub and BioPharmX entered into a securities purchase agreement (the “Securities Purchase Agreement”), with certain accredited investors (the “Investors”) pursuant to which among other things, Timber Sub issued to the Investors shares of Timber units immediately prior to the Merger and BioPharmXwe issued to the Investors warrants to purchase shares of BioPharmX common stock on the tenth trading day following the consummation of the Merger (the “Investor Warrants”) in a private placement transaction for an aggregate purchase price of approximately $25 million (which amount is comprised of (x) a $5 million credit with respect to the Bridge Notes and (y) $20 million in cash from the Investors) (the “Purchase Price”). We issued to the Investors 8,384,764167,695 Series A Warrants to purchase shares of Common Stockcommon stock (“Series A Warrants”) and 7,042,175140,844 Series B Warrants to purchase shares of Common Stockcommon stock (“Series B Warrants”). The Series A Warrants have a 5-year term and an exercise price of $2.7953, subject to the number of shares and exercise price being reset based on our stock price after the Merger. The Series A Warrants were initially exercisable into 8,384,764167,695 shares of Common Stock issued to the Investors,common stock, subject to certain adjustments. The Series B Warrants havehad an exercise price per share of $0.001,$0.05, were exercisable upon issuance and were initially convertible into 7,042,175140,844 shares of Common Stockcommon stock in the aggregate.

In addition, pursuant to the terms of the Securities Purchase Agreement, on May 22, 2020 we issued to the Investors warrants to purchase 413,7518,275 shares of Common Stockcommon stock (the “Bridge Warrants”) which havehad an exercise price of  $2.2362$111.81 per share.

On November 19, 2020 the Company entered into a Warrant Waiver Agreement with each of the Warrant holdersshare, which modified the terms of the original agreement and eliminated further resets. The aggregate number of Series A Warrants issued was fixed at 20,178,214 and the warrant exercise price was fixed at $1.16. The aggregate number of Series B Warrants was fixed at 22,766,777. The exercise price of the Series B Warrants remained unchanged.

In addition, certain restrictions contained in the Warrant Agreement and Securities Purchase Agreement were modified including restrictions on the Company’s abilityrevised to issue additional equity securities in connection with a financing and the Company’s ability to complete a fundamental transaction. Subject to certain restrictions detailed in the Warrant Waiver Agreement, the Company is now able to complete an equity financing or a fundamental transaction at any time after April 30, 2021.

Further, in connection with the Warrant Waiver Agreement the Company agreed to immediately register 11,383,389 shares of common stock issuable upon exercise of the Series B Warrants. The Warrant holders have additional demand registration rights as described in the Warrant Waiver Agreement. As of March 4, 2021, the Series B Warrants were exercised in full. As of March 15, 2021, 16,701,824 shares of common stock remain issuable upon exercise of the Series A Warrants.

We have a limited operating history as the Company was formed on February 26, 2019. Since inception, Timber’s operations have focused on establishing its intellectual property portfolio, including acquiring rights to the proprietary formulations of isotretinoin, rapamycin and sitaxsentan, as described above, organizing and staffing the Company, business planning, raising capital, and conducting clinical trials. Since inception, we have financed our operations with $18.9 million through capital contributions.

Since inception, we have incurred significant operating losses. For the year ended December 31, 2020, our net loss was $15.1 million. As of December 31, 2020, we had an accumulated deficit of $18.2 million. We expect to continue to incur significant expenses and operating losses for the foreseeable future. We anticipate that our expenses will increase significantly in connection with our ongoing activities, as we continue to develop the pipeline of programs.

Recent Developments

On July 1, 2020, we announced that all 11 sites across the United States and Australia in the Phase 2b CONTROL study evaluating TMB-001 in patients with moderate to severe CI are currently enrolling patients. As of December 31, 2020, all sites participating in a Phase 2b clinical trial evaluating TMB-002 were opened and are currently enrolling patients. On March 15, 2021, we announced that 50% of patients in the Phase 2b clinical trial have been enrolled.

Pursuant to the Amended Merger Agreement, BPX-01 (Topical Minocycline, 2%) and BPX-04 (Topical Minocycline, 1%) were added to our portfolio. BPX-01 and BPX-04 are assets currently in development for acne vulgaris and papulopustular rosacea, respectively. On July 22, 2020, we announced that we had received notice from the European Patent Office that it intends to grant a patent for the Company’s topical composition of pharmaceutical tetracycline (including minocycline) for dermatological use (European Patent Application No. 16714168.8) and the application subsequently issued on December 16, 2020 as EP 3273940. Patents covering the BPX-01 and BPX-04 assets have previously been granted in the United States, South Africa and Australia, among other countries. We are currently evaluating our strategic options regarding these assets.

On September 15, 2020, we announced that we had received a notice of allowance from the U.S. Patent and Trademark Office (USPTO) for a Company patent application covering BPX-01 and BPX-04, our pharmaceutical tetracycline (including minocycline) compositions for dermatological use (U.S. Patent Application No.: 16/514,459) and the application subsequently issued on January 5, 2021 as US 10,881,672.

On December 15, 2020, we announced that we had received a notice of allowance from the USPTO for a Company patent application covering TMB-001, our pharmaceutical isotretinoin composition (U.S. Patent Application No.: 15/772,456) and the application subsequently issued on February 10, 2021 as US 10,933,018.

On January 12, 2021, we announced that the FDA has granted orphan drug designation for TMB-003, our locally delivered formulation of sitaxsentan, for the treatment of systemic sclerosis.

On January 25, 2021, we announced the appointment of Alan Mendelsohn, M.D., as Chief Medical Officer. Dr. Mendelsohn assumed the roles and responsibilities of Amir Tavakkol, Ph.D., who stepped down as our Chief Scientific Officer.

On March 17, 2021, we announced that AFT Pharmaceuticals Limited (“AFT”), one of our development partners, entered into a license and supply agreement with Desitin Arzneimittel GmbH (“Desitin”) for Pascomer® (TMB-002 topical rapamycin) for the treatment of FAs associated with TSC in Europe. Pursuant to the AFT Licensing and Development Agreement (as defined below), we are entitled to receive a significant percentage of the economics (royalties and milestones) in any licensing transaction that AFT executes outside of North America, Australia, New Zealand, and Southeast Asia. The current transaction with Desitin is included in the scope of this provision.

Asset Purchase Agreements with Patagonia Pharmaceuticals LLC (“Patagonia”)

On February 28, 2019, we acquired the intellectual property rights for a topical formulation of isotretinoin for the treatment of CI and identified as TMB-001, formerly PAT-001 including the IPEG^TM brand, from Patagonia (the “TMB-001 Acquisition”).

Under the terms of the TMB-001 Acquisition, we paid a one-time upfront payment of $50,000 to Patagonia. Patagonia is entitled to up to $27.0 million of cash milestone payments relating to certain regulatory and commercial achievements of the TMB-001 Acquisition, with the first being $4.0 million from the initiation of a Phase 3 pivotal trial, as agreed with the FDA. In addition, Patagonia is entitled to net sales earn-out payments ranging from low single digits to mid-double digits for the program licensed. we are responsible for all development activities under the license. The potential regulatory and commercial milestones are not yet considered probable, and no milestone payments have been accrued at December 31, 2020.

On June 26, 2019, we acquired the intellectual property rights for a locally administered formulation of sitaxsentan for the treatment of cutaneous fibrosis and/or pigmentation disorders, and identified as TMB-003, formerly PAT-S03, from Patagonia (the “TMB-003 Acquisition”).

Upon closing of the TMB-003 Acquisition, we paid a one-time upfront payment of $20,000 to Patagonia. Patagonia is entitled to up to $10.25 million of cash milestone payments subject to adjustments relating to certain regulatory and commercial achievements of the TMB-003 License, with the first being a one-time payment of $250,000 upon the opening of an IND with the FDA. In addition, Patagonia is entitled to net sales earn-out payments ranging from low to mid-single digits for the program licensed. Timber is responsible for all development activities under the license. The potential regulatory and commercial milestones are not yet considered probable, and no milestone payments have been accrued at December 31, 2020.

Acquisition of License from AFT Pharmaceuticals Limited (“AFT”)

On July 5, 2019, we entered into a license agreement with AFT which provides us with (i) an exclusive license to certain licensed patents, licensed know-how and AFT trademarks to commercialize the Pascomer product in the United States, Canada and Mexico and (2) a co-exclusive license to develop the Pascomer product in this territory. Concurrently, we granted to AFT an exclusive license to commercialize the Pascomer product outside of its territory and co-exclusive sublicense to develop and manufacture the licensed product for commercialization outside of its territory (the “AFT License Agreement”).

The AFT License Agreement also provides for the formation of a joint steering committee to oversee, coordinate and review recommendations and approve decisions in respect of the matters the development and commercialization of the Pascomer product, in which both the Company and AFT have the right to appoint two members. The committee is currently comprised of three members. We have final decision-making authority on all matters relating to the commercialization of the Pascomer® product in the specified territory and on all matters related to the development (and regulatory approval) of the Pascomer® product, with certain exceptions.

The development of the Pascomer product is being conducted pursuant to a written development plan, written by AFT and approved by the joint steering committee, which is reviewed on at least an annual basis. AFT shall perform clinical trials of the Pascomer product in the specified territory and shall perform all CMC (chemistry, manufacturing and controls) and related activities to support regulatory approval. We are responsible for all expenses incurred by AFT during the term of the AFT License Agreement and shall equally$15.50 per share all costs and expenses with AFT, incurred by AFT for development and marketing work performed in furtherance of regulatory approval and commercialization worldwide, outside of the specified territory. We are also entitled to receive a significant percentage of the economics (royalties and milestones) in any licensing transaction that AFT executes outside of North America, Australia, New Zealand, and Southeast Asia.

Upon closing of the AFT License Agreement, we were obligated to reimburse AFT for previously spent development costs, subject to certain limitations and were obligated to pay a one-time, irrevocable and non-creditable upfront payment to AFT, payable in scheduled installments. AFT is entitled to up to $25.5 million of cash milestone payments relating to certain regulatory and commercial achievements of the AFT License. In addition, AFT is entitled to net sales royalties ranging from high single digits to low double digits for the program licensed. The potential regulatory and commercial milestones are not yet considered probable, and no milestone payments have been accrued at December 31, 2020.

Results of Operations

Comparison of the Year Ended December 31, 2020 and the period from February 26, 2019 (inception) through December 31, 2019

Grant Revenue

For the year ended December 31, 2020, revenue was approximately $0.5 million compared to $0.3 million for the period from February 26, 2019 (inception) through December 31, 2019. The increase in revenue of approximately $0.2 million consisted of reimbursements received from the FDA as a result of achieving certain clinical milestones in the development of TMB-001. In September 2018, Patagonia was awardedNovember 2021 Offering, and subsequently revised to $1.00 per share as a $1.5 million grant (the “Grant”) from the FDA as partresult of the Orphan Products Clinical Trials Grants Program of the Office of Orphan Products Development. The Grant funds are available in three annual installments of $500,000 per year, which commenced in September 2018. The Grant was transferred to Timber pursuant to its TMB-001 Acquisition Agreement with Patagonia in February 2019. A six-month no cost extension was granted to us in September 2019 and ended in February 2020. During the course of each year for which the Grant is active, we submit our allowable expenses and are reimbursed up to the maximum amount of each installment. In March 2020 and March 2021, the FDA awarded us the second and third tranches of the grant, respectively.August 2022 Offering.

Operating Costs and Expenses

Research and Development Expense

For the year ended December 31, 2020, research and development expenses were $2.7 million compared to $1.7 million for the period from February 26, 2019 (inception) through December 31, 2019. The increase of $1.0 million is primarily related to increase costs incurred related to our Phase 2a clinical trials of TMB-001 and TMB-002, such as CRO direct and pass through expenses.

Research and development costs were primarily attributable to costs incurred in connection with our research activities and include costs associated with clinical trials, consultants, clinical trial materials, regulatory filings, facilities, laboratory expenses and other supplies.

Research and development costs are expensed as incurred. Costs for certain activities, such as preclinical studies and clinical trials, are generally recognized based on an evaluation of the progress to completion of specific tasks using information and data provided to us by our vendors and collaborators.

Research and Development Expense - License Acquired

For the year ended December 31, 2020, research and development expense – license acquired was $12.4 million related to our acquisition of BioPharmX. For the period from February 26, 2019 (inception) through December 31, 2019, research and development expense – license acquired was $1.1 million related to licensing fees.

Transaction Costs

For the year ended December 31, 2020, transaction costs were $1.5 million consisting of legal and professional fees related to our acquisition of BioPharmX. There were no transaction costs for the period from February 26, 2019 (inception) through December 31, 2019.

General and Administrative Expense

For the year ended December 31, 2020, general and administrative expenses were $4.1 million compared to $0.5 million for the period from February 26, 2019 (inception) through December 31, 2019. The increase in general and administrative expenses of approximately $3.6 million was due to increased legal and professional fees of $1.6 million, increased personnel and related costs of $1.2 million due to increased headcount, management fees of $0.2 million, and other overhead expenses of $0.6 million.

Other Income (Expense)

Interest Expense

For the year ended December 31, 2020, the interest expense was $4.4 million due to the amortization of the original issue discount related to the bridge notes.

Interest Income

For the year ended December 31, 2020, the interest income was $0.8 million due to the accrued interest and amortization of the OID related to the BioPharmX loan.

Change in Fair Value of BioPharmX

For the year ended December 31, 2020, the change in fair value of investment in BioPharmX resulted in a gain of $0.6 million.

Change in Fair Value of Warrant Liability

For the year ended December 31, 2020, the change in fair value of warrant liability resulted in an unrealized gain of $8.2 million due to the decrease in share price during the period.

Liquidity and Capital Resources

Since inception, we have not generated revenue from product sales and have incurred net losses and negative cash flows from its operations. At December 31, 2020, we had working capital of approximately $9.3 million, which included cash and cash equivalents of $10.3 million. We reported a net loss of $15.1 million, during the year ended December 31, 2020. During the year ended December 31, 2020, we raised net proceeds of $17.5 million from our financing in connection with our acquisition of BioPharmX. Our management believes that the Company’s existing cash and cash equivalents as of December 31, 2020 are sufficient to satisfy our operating cash needs through the third quarter of 2021.

Cash Flows for the Year Ended December 31, 2020 and the period from February 26, 2019 (inception) through December 31, 2019

Operating Activities

For the year ended December 31, 2020, net cash used in operating activities was $8.3 million, which primarily consisted of our net loss of $15.1 million, adjusted for non-cash expenses of $7.7 million primarily consisting of, $12.4 million of research and development – licenses acquired, $4.2 million of amortization of debt discount related to the Bridge Notes, offset by $8.2 million for the change in fair value of our warrant liability, $0.8 million for the amortization of our loan discount, and $0.6 million for the change in fair value of our investment in BioPharmX. The change in assets and liabilities of $0.9 million is primarily due to increases in other current assets and a decrease in accounts payable, accrued expenses and other liabilities of $0.6 million.

For the period from February 26, 2019 (inception) through December 31, 2019, net cash used in operating activities was $1.0 million, which primarily consisted of our net loss of $3.0 million, adjusted for non-cash expenses of approximately $1.3 million including, $1.1 million related to our research and development – licenses acquired. The change in assets and liabilities was due to increased accounts payable and accrued expenses of $0.7 million.

Investing Activities

For the year ended December 31, 2020, net cash used in investing activities was approximately $2.7 million which primarily consisted of our loan to BioPharmX of $2.3 million and our payment of $0.8 million for research and development licenses, offset by the cash acquired with our acquisition of BioPharmX of $0.3 million.

For the period from February 26, 2019 (inception) through December 31, 2019, net cash used in investing activities was approximately $0.3 million for the purchase of research and development licenses.

Financing Activities

For the year ended December 31, 2020, net cash provided by financing activities was approximately $21.2 million, which consisted of the net proceeds received from the issuance of common stock related to our financing of $17.5 million and the proceeds received from our Bridge Notes of $3.7 million.

For the period from February 26, 2019 (inception) through December 31, 2019, net cash provided by financing activities was approximately $1.4 million which consisted of the proceeds for the issuance of common and preferred units.

Funding Requirements

We expect our expenses to increase in connection with our ongoing activities, particularly as we continue the research and development of our pipeline of programs. Furthermore, following the completion of the Merger, we expect to incur additional costs as a public company. Accordingly, we will need to obtain additional funding. If we are unable to raise capital or otherwise obtain funding when needed or on attractive terms, we could be forced to delay, reduce or eliminate our research and development programs or future commercialization efforts.

As discussed above, Timber Sub and BioPharmX entered into the Securities Purchase Agreement pursuant to which, among other things, we issued the Investor Warrants to the Investors in a private placement transaction for an aggregate purchase price of approximately $25 million (which amount is comprised of (x) a $5 million credit with respect to the Bridge Notes and (y) $20 million in cash from the Investors).

In addition, onOn July 17, 2020, we entered into an Amended and Restated Registration Rights Agreement (as amended, the “Registration Rights Agreement”) with the Investors. Pursuant to the Registration Rights Agreement, we agreed to provide certain demand registration rights to the Investors relating to the registration of the shares underlying the Investor Warrants and the Bridge Warrants. In connection with the entry into the Registration Rights Agreement and pursuant to the Securities Purchase Agreement, we arewere restricted from various financing activities until August 16, 2022.

On November 19, 2020, we entered into a Warrant Waiver Agreement with each of the holders of the Series A Warrants and Series B Warrants (the “Warrant Waiver Agreement”) which modified the terms of the original agreement and eliminated further resets. The aggregate number of Series A Warrants issued was fixed at 403,564 and the warrant waiver agreementexercise price was fixed at $58.00. The aggregate number of Series B Warrants was fixed at 455,336. The exercise price of the Series B Warrants remained unchanged.

In addition, certain restrictions contained in the Series A Warrants, Series B Warrants and Securities Purchase Agreement were modified including the restrictions on our ability to issue additional equity securities in connection with a financing and our ability to complete a fundamental transaction. Subject to certain restrictions detailed in the investors revisingWarrant Waiver Agreement, the restriction date tofor an equity financing or a fundamental transaction ended on April 30, 2021.

We remain restricted with respect to conducting variable rate transactions until May 18, 2023.

Further, in connection with the CompanyWarrant Waiver Agreement we agreed to immediately register 227,668 shares of common stock issuable upon exercise of the Series B Warrants. The warrant holders have additional demand registration rights as described in the Warrant Waiver Agreement. As of March 4, 2021, the Series B Warrants were exercised in full. As of December 31, 2022, 334,036 shares of common stock remain issuable upon exercise of the Series A Warrants.

2022 Reverse Stock Split

On November 7, 2022, we filed the Certificate of Amendment to our Certificate of Incorporation, as amended, with the Secretary of State of the State of Delaware, which effected, at 5:00 p.m. Eastern Time on November 8, 2022, the 2022 Reverse Stock Split of our issued and outstanding shares of common stock at a ratio of one-for-fifty. The 2022 Reverse Stock Split did not affect our authorized common stock of 450,000,000 shares. Proportionate adjustments were made to the conversion rate, the per share exercise price and the number of shares issuable upon the vesting, exercise or conversion of our outstanding derivative securities in accordance with the 2022 Reverse Stock Split ratio.

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As a result of the 2022 Reverse Stock Split, every fifty shares of common stock issued and outstanding was converted into one share of common stock. The 2022 Reverse Stock Split affected all stockholders uniformly and did not alter any stockholder’s percentage interest in our equity, except to the extent that the 2022 Reverse Stock Split would have resulted in some stockholders owning a fractional share. No fractional shares were issued in connection with the 2022 Reverse Stock Split. Stockholders who would otherwise have been entitled to a fractional share of common stock were instead entitled to receive a proportional cash payment. The common stock began trading on a post-split as-adjusted basis on November 9, 2022. There can be no assurance that we will be able to maintain compliance with the NYSE American continued listing standards, even after the implementation of the 2022 Reverse Stock Split.

All shares of common stock, including common stock underlying warrants, stock options, restricted stock units and VARs, as well as conversion ratios, exercise prices, conversion prices and per share information in this Annual Report on Form 10-K give retroactive effect to the 2022 Reverse Stock Split.

November 2021 Offering

On November 2, 2021, we entered into an underwriting agreement with H.C. Wainwright & Co., LLC or Wainwright, as representative of the several underwriters named in Schedule I thereto, relating to the public offering, issuance and sale of shares of our common stock and, to certain investors, pre-funded warrants to purchase shares of common stock, and accompanying warrants to purchase shares of our common stock. After giving effect to the sale of additional shares pursuant to the exercise of the option by Wainwright that closed on November 9, 2021, the total number of shares of common stock (or common stock equivalents) sold by us in the offering was 539,063, together with the November Warrants to purchase up to 539,063 shares of common stock issued at the closing on November 5, 2021, for total gross proceeds of $17.25 million before deducting underwriting discounts and commissions and other offering expenses, and net proceeds of approximately $15.8 million. As a result of the November 2021 offering, the exercise price of the Bridge Warrants was adjusted to $15.50 per share.

Each share of common stock and pre-funded warrant to purchase one share of common stock was sold together with a warrant to purchase one share of common stock. All the securities sold in the offering were sold by us. The public offering price of each share of common stock and accompanying November Warrant was $32.00 and $31.95 for each pre-funded warrant and accompanying November Warrant. The pre-funded warrants were immediately exercisable at a price of $0.05 per share of common stock and were exercised in full on November 5, 2021. The November Warrants were immediately exercisable at a price of $35.00 per share of common stock and expire five years from the date of issuance. As of December 31, 2022, no November Warrants have been exercised.

August 2022 Offering

On March 1, 2022, we entered into the Engagement Letter, as subsequently amended on June 30, 2022 , with Wainwright, pursuant to which Wainwright agreed to act as the exclusive placement agent on a reasonable best-efforts basis in connection with a public offering of common stock.

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On August 8, 2022, we consummated the August 2022 Offering of (i) 931,667 shares of common stock, (ii) pre-funded warrants to purchase up to an aggregate of 401,667 shares of common stock and (iii) August Warrants to purchase up to an aggregate of 1,333,333 shares of common stock. Each share of common stock and pre-funded warrant to purchase one

share of common stock was sold together with an August Warrant to purchase one share of common stock. All of the securities sold in the August 2022 Offering were sold by us. The public offering price of each share of common stock and accompanying August Warrant was $6.00 and $5.995 for each pre-funded warrant and accompanying August Warrant. The pre-funded warrants were immediately exercisable at a price of $0.005 per share of common stock and were exercisable at any time until all of the pre-funded warrants were exercised in full. The August Warrants are immediately exercisable at a price of $6.00 per share of common stock and will expire five years from the date of issuance. The shares of common stock and pre-funded warrants, and the accompanying August Warrants, were issued separately and were immediately separable upon issuance. All of the pre-funded warrants were exercised on August 8, 2022.

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In connection with the August 2022 Offering, on August 4, 2022, we entered into securities purchase agreements with certain institutional investors in the August 2022 Offering. The net proceeds to us from the August 2022 Offering were approximately $6.9 million, after deducting placement agent fees and expenses and estimated offering expenses payable by us, excluding the proceeds, if any, from the exercise of the August Warrants.

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We intend to use the net proceeds from the August 2022 Offering for research and development, including clinical trials, working capital and general corporate purposes. Further, the exercise price of the Bridge Warrants was reduced to the offering price per share of the August 2022 Offering less the Black Scholes value of the August Warrants issued in the August 2022 Offering which was $1.00. As of December 31, 2022, 1,309,333 shares of common stock remain issuable upon exercise of the August Warrants.

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October 2022 Offering

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On October 3, 2022, we entered into the October Securities Purchase Agreement with the October Investors to sell, in the Registered Direct Offering (i) 260,000 shares of common stock, and (ii) Series 1 Warrants to purchase up to an aggregate of 260,000 shares of Series 1 Warrant Shares. The Series 1 Warrants are immediately exercisable at an exercise price of $5.00 per share and will expire two and one-half years following the initial exercise date. The October Purchase Agreement contains customary representations and warranties and agreements of us and the October Investors, and customary indemnification rights and obligations of the parties. Total gross proceeds from the Registered Offering, before deducting the placement agent’s fees and other estimated offering expenses, was $1.3 million. The Registered Offering closed on October 3, 2022.

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In “the Concurrent Private Placement Offering we also agreed to issue (i) Series 2 Warrants to purchase up to an aggregate of 260,000 Series 2 Warrant Shares, and (ii) 13,000 shares of Series B Preferred Stock.

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Each share of Series B Preferred Stock had a stated value of $0.001 per share. The Series B Preferred Stock had super voting rights on the approval of the 2022 Reverse Stock Split equal to 10,000,000 votes per share of Series B Preferred Stock. The voting rights of the Series B Preferred Stock were established in order to maintain our NYSE American listing by raising the average minimum bid price of the common stock to over $0.20 for 30 consecutive trading days. Upon the effectiveness of the Certificate of Amendment, the outstanding shares of Series B Preferred Stock were automatically transferred to us and cancelled for no consideration with no action on behalf of the holders thereof and such shares resumed the status of authorized but unissued shares of preferred stock and were no longer designated as shares of Series B Stock.

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The Series 2 Warrants are exercisable on the date six (6) months following the date of issuance at an exercise price of $6.00 per share and will expire two and one-half years following the initial exercise date. The Series B Preferred Stock was not, and the Series 2 Warrants and Series 2 Warrant Shares issuable upon exercise of the Series 2 Warrants have not been, registered under the Securities Act, and were offered pursuant to the exemption provided in Section 4(a)(2) under the Securities Act and Rule 506(b) promulgated thereunder.

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As compensation to Wainwright, as the exclusive placement agent in connection with the Registered Offering, we paid Wainwright a cash fee of 6% of the aggregate gross proceeds raised in the Registered Offering and reimbursed Wainwright for legal fees and expenses up to $40,000, non-accountable expenses of $25,000 and $15,950 for clearing expenses. In

connection with the October 2022 Offerings, we received net proceeds of approximately $1.0 million. As of December 31, 2022, none of the Series 1 Warrants or Series 2 Warrants have been exercised and 260,000 shares of common stock and 260,000 shares of common stock remain issuable upon exercise of the Series 1 Warrants and Series 2 Warrants, respectively.

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Material Agreements

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Asset Purchase Agreements with Patagonia Pharmaceuticals LLC

TMB-001

On February 28, 2019, we acquired the intellectual property rights for a topical formulation of isotretinoin for the treatment of CI and identified as TMB-001, formerly PAT-001 including the IPEGTM brand, from Patagonia, which we refer to as the “TMB-001 Acquisition”, pursuant to the Asset Acquisition Agreement. Zachary Rome, a former member of our board of directors and our former Executive Vice-President and Chief Operating Officer serves as President of Patagonia and also maintains an ownership interest therein.

Under the terms of the TMB-001 Acquisition, we paid a one-time upfront payment of $50,000 to Patagonia. Patagonia is entitled to up to $27.0 million of cash milestone payments relating to certain regulatory and commercial achievements of the TMB-001 Acquisition, with the first being $4.0 million from the initiation of a Phase 3 pivotal trial, as agreed with the FDA and defined as the first patient enrolled in such trial for the product. The next milestone payments relate to (i) a one-time payment of $7.0 million upon FDA approval of an NDA related to the product for the treatment of CI, or a substantially similar indication, and (ii) a one-time payment of $2.0 million upon EMA approval of an MMA related to the product for the treatment of CI, or a substantially similar indication. In addition, Patagonia is entitled to net sales earn-out payments ranging from low single digits to mid-double digits for the program licensed. We are responsible for all development activities under the agreement. The first regulatory and commercial milestone occurred in June 2022, as the first patient enrolled in the Phase 3 pivotal trial for the product and as such a $4.0 million milestone payment was accrued at June 30, 2022. There were no further milestone payments accrued at December 31, 2022, because the potential regulatory and commercial milestones were not considered probable.

On July 20, 2022, we entered into the Amendment to the Asset Acquisition Agreement with Patagonia, pursuant to which we and Patagonia extended the time for our payment of the first milestone payment, which became payable in the third quarter of 2022 upon the commencement of patient enrollment in our Phase 3 ASCEND clinical trial in the second quarter of 2022. The first milestone payment became payable by us in two tranches, with $2.25 million due by September 1, 2022, and $2.065 million due by September 1, 2023.  The first milestone payment was made on September 1, 2022. We are accreting interest on the second tranche. The interest is recorded in our Consolidated Statement of Operations and Comprehensive Loss. In addition to the remedies for breach under the Asset Acquisition Agreement, including reversion under certain circumstances, we granted Patagonia a security interest in TMB-001 and certain other assets until the second milestone payment has been paid in full. Because the milestone payments due upon the achievement of certain events would be payable prior to the time in which we are able to generate revenue, such obligations under the Asset Acquisition Agreement, as amended, may impact the economic viability of developing and marketing TMB-001.

TMB-003

On June 26, 2019, we acquired the intellectual property rights for a locally administered formulation of Sitaxsentan for the treatment of cutaneous fibrosis and/or pigmentation disorders, and identified as TMB-003, formerly PAT-S03, from Patagonia which we refer to as the TMB-003 Acquisition.

Upon closing of the TMB-003 Acquisition, we paid a one-time upfront payment of $20,000 to Patagonia. Patagonia is entitled to up to $10.25 million of cash milestone payments subject to adjustments relating to certain regulatory and commercial achievements of TMB-003, with the first being a one-time payment of $250,000 upon the opening of an IND with the FDA.  In addition, Patagonia is entitled to net sales earn-out payments ranging from low to mid-single digits for

the program licensed. We are responsible for all development activities under the agreement. The potential regulatory and commercial milestones are not yet considered probable, and no milestone payments have been accrued at December 31, 2022 or 2021, respectively. Because the milestone payments due upon the achievement of certain events would be payable prior to the time in which we are able to generate revenue, such obligations under the agreement may impact the economic viability of developing and marketing TMB-003.

Acquisition and Termination of License from AFT Pharmaceuticals Limited

On July 5, 2019, we entered into the AFT License Agreement which provided us with (i) an exclusive license to certain licensed patents, licensed know-how and AFT trademarks to commercialize Pascomer in the United States, Canada and Mexico and (ii) a co-exclusive license to develop Pascomer in this territory. Concurrently, we granted to AFT an exclusive license to commercialize Pascomer outside of its territory and co-exclusive sublicense to develop and manufacture the licensed product for commercialization outside of its territory.

The development of Pascomer had been conducted pursuant to a written development plan, written by AFT and approved by the joint steering committee, which had been reviewed on at least an annual basis. AFT agreed to perform clinical trials of Pascomer in the specified territory and perform all CMC (chemistry, manufacturing and controls) and related activities to support regulatory approval.We were responsible for all expenses incurred by AFT during the term of the AFT License Agreement and equally shared all costs and expenses with AFT, incurred by AFT for development and marketing work performed in furtherance of regulatory approval and commercialization worldwide, outside of the specified territory.  We were also entitled to receive 50% of the economics (royalties and milestones) in any licensing transaction that AFT executed outside of North America, Australia, New Zealand, and Southeast Asia.

Upon closing of the AFT License Agreement, we were obligated to reimburse AFT for previously spent development costs, subject to certain limitations and were obligated to pay a one-time, irrevocable and non-creditable upfront payment to AFT, payable in scheduled installments. AFT was entitled to up to $25.5 million of cash milestone payments if Pascomer achieved certain regulatory and commercial milestones, with the first payment of $1.0 million upon the successful completion of a Phase 2b trial defined as the achievement of the trial’s primary clinical endpoints. In addition, AFT was entitled to net sales royalties ranging from high single digits to low double digits for the program licensed. The potential regulatory and commercial milestones were not yet considered probable, and no milestone payments were accrued at December 31, 2021. No milestones were accrued at December 31, 2022 as a result of the termination of the AFT License Agreement on July 25, 2022 and no regulatory and milestones were yet considered probable prior to termination.

On July 22, 2022, we provided written notice to AFT of our decision to terminate the AFT License Agreement because we believed there was no longer a commercially reasonable path to approval and commercialization for the product in the United States. Additionally, following the receipt and analysis of topline data for the Phase II Clinical Trial (as defined in the AFT License Agreement) it was determined that the study failed to meet its primary efficacy endpoint. Under the AFT License Agreement, we were required to provide 120 days’ prior written notice of termination to AFT which was waived by AFT on July 25, 2022, or the Termination Date. On the Termination Date, the rights and licenses to Pascomer reverted to AFT, among other things, as set forth in the AFT License Agreement.

Letter Agreement with TardiMed LLC

We previously had a class of Series A Preferred Stock which is currently subjectas to redemption at any time in whole or in part at the request ofwhich the holder, TardiMed.TardiMed, had demanded redemption. The redemption price iswas equal to approximately $1.9$2.1 million in the aggregate, at December 31, 2021, including accumulated and unpaid dividends which accrue dividends at the rate of 8% per annum. Redemption iswas subject to certain limitations under Delaware corporate law so thatdue to our abilitycurrent financial condition.  As a result of the call for redemption, the Series A Preferred Stock had been reclassified as a liability at December 31, 2021. Dividends continued to payaccrue and were recorded as non-cash interest expense in the Statement of Operations and Comprehensive Loss rather than to additional-paid-in-capital in 2022.

On July 27, 2022, we entered into the Letter Agreement with TardiMed pursuant to which TardiMed agreed to exchange its 1,819 shares of Series A Preferred Stock plus accrued dividends for a pre-funded warrant to purchase 181,083 shares of common stock, or the TardiMed Warrant. The number of shares underlying the TardiMed Warrant is based on the redemption price of the Series A Preferred Stock (which had been demanded by TardiMed) divided by $11.95, the last closing price of the common stock prior to the date the Letter Agreement was executed.

Twenty percent of the TardiMed Warrant was immediately exercisable upon issuance. Beginning on September 30, 2022, and then at the end of each subsequent calendar quarter upon written request of TardiMed, we have agreed to allow an additional 20% of the initial balance of the TardiMed Warrant to become exercisable, provided that only 20% of the initial balance of the TardiMed Warrant will be exercisable in any given quarter. The TardiMed Warrant’s exercise price is $0.005 and may be limited.exercised on a cashless basis. The TardiMed Warrant will terminate when exercised in full. As of December 31, 2022, 40% of the TardiMed Warrant has been exercised on a cashless basis and an aggregate of 72,363 shares of common stock have been issued to TardiMed.

Sublease Agreement

We currently lease an 11,793 square foot office and laboratory space at 115 Nicholson Lane, San Jose, California. This lease expires in December 2023. On February 17, 2020, we executed a sublease agreement covering the entire space for the remaining term of the lease. The current monthly rent at this location is $37,710, which includes common area maintenance charges.  The sublessee unexpectedly ceased making sublease payments in the fourth quarter of 2022 due substantial financial difficulties. We have been working with the owner of the property to market the location. The sublessee has been found to have made multiple alterations to the location without permits or the lessor’s approval and we have received an estimate for repairs to the existing space and possible costs to clean the location will approximate $150,000.  This amount is recorded in accrued expenses at December 31, 2022, as an asset retirement obligation.

Recent Developments

We entered into a lease for a 5,281 square foot office space at 3 Mountain View Road, Suite 100, Warren, New Jersey on February 8, 2023. This lease expires on February 28, 2028. The current monthly rent at this location is $8,801.67. Pursuant to the terms of the lease, we have an option to terminate the lease effective as of the completion of the thirty-seventh full calendar month of the lease term, provided that certain conditions are met. The lease of our prior headquarters in Basking Ridge, New Jersey expires on March 31, 2023.

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Subsequent to December 31, 2022, 20% of the TardiMed Warrant was exercised on a cashless basis and 36,113 shares of common stock were issued to TardiMed.

Results of Operations

Comparison of the Years Ended December 31, 2022 and 2021

Revenues

For the year ended December 31, 2022, grant revenue was approximately $0.08 million compared to $0.6 million for the year ended December 31, 2021. The decrease in revenue of approximately $0.5 million was due to the reduction of reimbursements received from the FDA as a result of achieving certain clinical milestones in the development of TMB-001, and the reimbursements under the grant were completed in 2022. In September 2018, Patagonia was awarded a $1.5 million grant (the “Grant”) from the FDA as part of the Orphan Products Clinical Trials Grants Program of the Office of Orphan Products Development. The Grant funds were made available in three annual installments of $500,000 per year, which commenced in September 2018. The Grant was transferred to us pursuant to our TMB-001 Acquisition Agreement with Patagonia in February 2019. In March 2020 and March 2021, the FDA awarded us the second and third tranches of the grant, respectively.

Milestone revenue was nil for the year ended December 31, 2022 compared to approximately $0.3 million for the year ended December 31, 2021.  These revenues were related to an upfront milestone payment paid to AFT by Desitin to which we were entitled under the terms of the AFT License Agreement.

Operating Costs and Expenses

Research and Development Expense

For the year ended December 31, 2022, research and development expenses were $13.3 million compared to $6.1 million for the year ended December 31, 2021. The increase of $7.2 million is primarily related to expected increased costs incurred related to our Phase 3 clinical trial of TMB-001, such as CRO direct and pass-through expenses and the accrual of the $4.0 million milestone payment due to Patagonia as the first regulatory and commercial milestone occurred in June 2022, as the first patient enrolled in the Phase 3 pivotal trial for the product.

Research and development costs were primarily attributable to costs incurred in connection with our research activities and include costs associated with clinical trials, consultants, clinical trial materials, regulatory filings, facilities, laboratory expenses and other supplies.

Research and development costs are expensed as incurred. Costs for certain activities, such as preclinical studies and clinical trials, are generally recognized based on an evaluation of the progress to completion of specific tasks using information and data provided to us by our vendors and collaborators.

General and Administrative Expense

For the year ended December 31, 2022, general and administrative expenses were approximately $6.0 million compared to approximately $5.4 million for the year ended December 31, 2021. The increase in general and administrative expenses of approximately $0.6 million was due to increased personnel and related costs including stock-based compensation of approximately $0.6 million as stock compensation expense associated with certain option grants made in 2021 had a full year of expense as vesting and additional expense associated with accelerated vesting of stock options related to our former Chief Operating Officer’s stock option grants in 2022, increased costs associated with being a public company (stock exchange fees and proxy solicitation fees of approximately $0.2 million, and approximately $0.2 million  of costs associated with an asset retirement obligation for  the former BioPharmX offices in California, offset by a reduction in consulting fees of approximately $0.2 million and a reduction of approximately $0.2 million of salary and bonus expense as a result of the departure of our former Chief Operating Officer in early 2022.

Other Income (Expense)

Interest Expense

Interest expense was $0.2 million for the year ended December 31, 2022, which was due to interest charged for the Redeemable Series A convertible preferred stock under redemption and interest accreted on the milestone payment due to Patagonia Pharmaceuticals, LLC. Interest expense was minimal for the year ended December 31, 2021.  

The remaining other income (expense) included, a gain on the forgiveness of our PPP loan of approximately $0.04 million and other income of approximately $0.08 million for fees received from a third party for their access to review certain agreements related to BPX-01 and BPX-04 and a loss on foreign currency transactions of approximately $0.02 million due to the currency fluctuation of the US$ versus the AUD$ as exchange rates were unfavorable in 2022.

Provision (benefit) for income taxes

The provision for the year ended December 31, 2022 is for state income taxes.  The benefit for the year ended December 31, 2021 was due to an adjustment for the state provision from the previous year.

Comparison of the Quarters Ended December 31, 2022 and 2021