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        Also, these forward-looking statements represent our estimates and assumptions only as of the date of the document containing the applicable statement. Unless required by law, we undertake no obligation to update or revise any forward-looking statements to reflect new information or future events or developments. Thus, you should not assume that our silence over time means that actual events are bearing out as expressed or implied in such forward-looking statements. You should read this prospectus, any applicable prospectus supplement, together with the documents that we have filed with the SEC that are incorporated by reference and any free writing prospectus we have authorized for use in connection with this offering, completely and with the understanding that our actual future results may be materially different from what we expect. We qualify all of the forward-looking statements in the foregoing documents by these cautionary statements.

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Unless otherwise stated, all informationThe selling stockholders named in this prospectus assumes nomay offer and sell up to 5,776,244 shares of our common stock. Our common stock is currently listed on The Nasdaq Capital Market under the symbol "TARA." Shares of our common stock that may be offered under this prospectus will be fully paid and non-assessable. We will not receive any of the proceeds of sales by the selling stockholders of any of the common stock covered by this prospectus. Throughout this prospectus, when we refer to the shares of our common stock being registered on behalf of the selling stockholders for offer and resale, we are referring to the shares of common stock issued to the selling stockholders, including in connection with the conversion of the Series A Preferred Stock, no exercise1 convertible non-voting preferred stock issued in the Private Placement as described above. When we refer to the selling stockholders in this prospectus, we are referring to the selling stockholders identified in this prospectus and, as applicable, their permitted transferees or other successors-in-interest that may be identified in a supplement to this prospectus or, if required, a post-effective amendment to the registration statement of outstanding options or warrants to purchase common stock and no issuancewhich this prospectus is a part.

Table of shares available for future issuance under our equity compensation plans.Contents

RISK FACTORS

RISK FACTORS

An investmentInvesting in our securitiescommon stock involves a high degree of risk. Before making an investment decision, you should carefully consider the risks described below and under “Risk Factors”described in the applicable prospectus supplement andsections entitled "Risk Factors" in our most recent Annual Report on Form 10-K and in our updates to those Risk Factors in oursubsequent Quarterly Reports on Form 10-Q, or Current Reports on Form 8-K followingas filed with the most recent Form 10-K, and in all other information appearing in this prospectus orSEC, which are incorporated herein by reference into this prospectus andin their entirety, as well any amendment or updates to our risk factors reflected in subsequent filings with the SEC, including any applicable prospectus supplement. The material risks and uncertainties that management believes affect us will be described in those documents. In addition to those risk factors, there may be additional risks and uncertainties of which management is not aware or focused on or that management deems immaterial. Our business, financial condition, or results of operations or prospects could be materially adversely affected by any of these risks. The trading price of our securities could decline due to any of these risks, and you may lose all or part of your investment. This prospectus and the documents incorporated herein by reference also contain 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 certain factors, including the risks mentioned elsewhere in this prospectus. For more information, see the section entitled "Where You Can Find Additional Information." Please also read carefully the section entitled "Special Note Regarding Forward-Looking Statements."

ArTara's business depends on the successful clinical development, regulatory approval and commercialization of TARA-002 and IV Choline Chloride.

        The success of ArTara's business, including its ability to finance itself and generate revenue in the future, primarily depends on the successful development, regulatory approval and commercialization of TARA-002 and IV Choline Chloride. The clinical and commercial success of TARA-002 and IV Choline Chloride depends on a number of factors, including the following:

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timely and successful completion of required clinical trials not yet initiated, which may be significantly slower or costlier than ArTara currently anticipates and/or produce results that do not achieve the endpoints of the trials;



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whether ArTara is qualifiedrequired by the FDA or similar foreign regulatory agencies to conduct additional studies beyond those planned to support the approval and commercialization of TARA-002 and IV Choline Chloride;



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achieving and maintaining, and, where applicable, ensuring that ArTara's third-party contractors achieve and maintain compliance with their contractual obligations and with all regulatory requirements applicable to TARA-002 and IV Choline Chloride;



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ability of third parties with whom ArTara contracts to manufacture adequate clinical trial and commercial supplies of TARA-002 and IV Choline Chloride, to remain in good standing with regulatory agencies and to develop, validate and maintain commercially viable manufacturing processes that are compliant with current good manufacturing practices ("cGMP");



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a continued acceptable safety profile during clinical development and following approval of TARA-002 and IV Choline Chloride;



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ability to obtain favorable labeling for TARA-002 and IV Choline Chloride through regulators that allows for successful commercialization, given the drugs may be marketed only to the extent approved by these regulatory authorities (unlike with most other industries);



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ability to successfully commercialize TARA-002 and IV Choline Chloride in the United States and internationally, if approved for marketing, sale and distribution in such countries and territories, whether alone or in collaboration others;



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acceptance by physicians, insurers and payors, and patients of the quality, benefits, safety and efficacy of TARA-002 and IV Choline Chloride, if either is approved, including relative to alternative and competing treatments;

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existence of a regulatory environment conducive to the success of TARA-002 and IV Choline Chloride;



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ability to price TARA-002 and IV Choline Chloride to recover ArTara's development costs and generate a satisfactory profit margin; and



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ArTara's ability and its partners' ability to establish and enforce intellectual property rights in and to TARA-002 and IV Choline Chloride.

        If ArTara does not achieve one or more of these factors, many of which are beyond its control, in a timely manner or at all, ArTara could experience significant delays or an inability to obtain regulatory approvals or commercialize TARA-002 and IV Choline Chloride. Even if regulatory approvals are obtained, ArTara may never be able to successfully commercialize TARA-002 and IV Choline Chloride. Accordingly, ArTara cannot assure you that it will be able to generate sufficient revenue through the sale of TARA-002 and IV Choline Chloride to continue its business.

ArTara has never conducted a clinical trial itself and may be unable to successfully do so for TARA-002 or IV Choline Chloride.

        The conduct of a clinical trials is a long, expensive, complicated and highly regulated process. Although ArTara's employees have conducted successful clinical trials in the past across many therapeutic areas while employed at other companies, ArTara as a company has not conducted any clinical trials, and as a result may require more time and incur greater costs than it anticipates. Failure to commence or complete, or delays in, ArTara's planned clinical trials would prevent it from or delay ArTara in obtaining regulatory approval of and commercializing TARA-002 and IV Choline Chloride, which would adversely impact its financial performance, as well as subjecting it to significant contract liabilities.

TARA-002 is an immunotherapy, the first indication for which ArTara plans to pursue is the treatment of lymphatic malformations, an indication for which there are no FDA-approved therapies. This makes it difficult to predict the timing and costs of clinical development for TARA-002, as well as the regulatory approval path.

        To date, there are no FDA-approved therapies for the treatment of lymphatic malformations and the standard of care is surgery. The regulatory approval process for novel product candidates such as TARA-002 can be more expensive and take longer than for other, better known or extensively studied therapeutic approaches. In addition, the clinical trials conducted on TARA-002 in the United States to date, included a control arm in which treatment was initially delayed. It is unclear whether this trial design could support FDA approval or whether a placebo-control or other randomization will be required by the FDA. Delay or failure to obtain, or unexpected costs in obtaining, the regulatory approval necessary to bring TARA-002 to market could decrease ArTara's ability to generate sufficient revenue to maintain its business.

The regulatory path to approval of TARA-002 is atypical.

        The proposed regulatory strategy for the TARA-002 program is combination of demonstrating comparability to a product that is not FDA approved. By demonstrating that TARA-002 is, in fact, OK-432, ArTara believes that the large volume of data published on OK-432 including the data generated by the University of Iowa led study will then apply to TARA-002. This strategy will rely on some components of a biosimilar pathway, with a significant difference being that the same genetically distinct strain and proprietary manufacturing processes will be used to produce TARA-002 as OK-432. If comparability is demonstrated and accepted by regulatory authorities, ArTara will attempt to rely on existing OK-432 safety and efficacy data to file the Biologics Licensing Application (BLA). There is no example of a biologic product that was approved utilizing this regulatory approach.

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Clinical drug development is very expensive, time-consuming and uncertain.

        Clinical development for ArTara's product candidates is very expensive, time-consuming, difficult to design and implement, and the outcomes are inherently uncertain. Most product candidates that commence clinical trials are never approved by regulatory authorities for commercialization and of those that are approved many do not cover their costs of development. In addition, ArTara, any partner with which it may in the future collaborate, the FDA, an institutional review board (IRB), or other regulatory authorities, including state and local agencies and counterpart agencies in foreign countries, may suspend, delay, require modifications to or terminate ArTara's clinical trials at any time.

ArTara's product candidates may cause undesirable side effects or have other unexpected properties that could delay or prevent their regulatory approval, limit the commercial profile of an approved label, or result in post-approval regulatory action.

        Unforeseen side effects from TARA-002 or IV Choline Chloride could arise either during clinical development or, if approved, after it has been marketed. Undesirable side effects could cause ArTara, any partners with which ArTara may collaborate, or regulatory authorities to interrupt, extend, modify, delay or halt clinical trials and could result in a more restrictive or narrower label or the delay or denial of regulatory approval by the FDA or comparable foreign authorities.

        Results of clinical trials could reveal a high and unacceptable severity and prevalence of side effects. In such an event, trials could be suspended or terminated, and the FDA or comparable foreign regulatory authorities could order us to cease further development of or deny approval of a product candidate for any or all targeted indications. The drug-related side effects could affect patient recruitment or the ability of enrolled patients to complete the trial or result in product liability claims. Any of these occurrences may harm ArTara's business, financial condition, operating results and prospects.

        Additionally, if ArTara or others identify undesirable side effects, or other previously unknown problems, caused by a product after obtaining U.S. or foreign regulatory approval, a number of potentially negative consequences could result, which could prevent ArTara or its potential partners from achieving or maintaining market acceptance of the product and could substantially increase the costs of commercializing such product.

If ArTara or any partners with which ArTara may collaborate are unable to achieve and maintain coverage and adequate levels of reimbursement for TARA-002 or IV Choline Chloride following regulatory approval, their commercial success may be hindered severely.

        If TARA-002 and IV Choline Chloride only becomes available by prescription, successful sales by ArTara or by any partners with which ArTara may collaborate depend on the availability of coverage and adequate reimbursement from third-party payors. Patients who are prescribed medicine for the treatment of their conditions generally rely on third-party payors to reimburse all or part of the costs associated with their prescription drugs. The availability of coverage and adequate reimbursement from governmental healthcare programs, such as Medicare and Medicaid in the United States, and private third-party payors is often critical to new product acceptance. Coverage decisions may depend on clinical and economic standards that disfavor new drug products when more established or lower-cost therapeutic alternatives are already available or subsequently become available, or may be affected by the budgets and demands on the various entities responsible for providing health insurance to patients who will use TARA-002 and IV Choline Chloride. Even if ArTara obtains coverage for its products, the resulting reimbursement payment rates might not be adequate or may require co-payments that patients find unacceptably high. Patients are unlikely to use a product unless coverage is provided, and reimbursement is adequate to cover a significant portion of the cost.

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        In addition, the market for ArTara's products will depend significantly on access to third-party payors' drug formularies or lists of medications for which third-party payors provide coverage and reimbursement. The industry competition to be included in such formularies often leads to downward pricing pressures on pharmaceutical companies and there may be time limitations on when a new drug may even apply for formulary inclusion. Also, third-party payors may refuse to include products in their formularies or otherwise restrict patient access to such products when a less costly generic equivalent or other treatment alternative is available in the discretion of the formulary.

        Third-party payors, whether foreign or domestic, or governmental or commercial, are developing increasingly sophisticated methods of controlling healthcare costs. In addition, in the United States, although private third-party payors tend to follow Medicare practices, no uniform or consistent policy of coverage and reimbursement for drug products exists among third-party payors. Therefore, coverage and reimbursement for drug products can differ significantly from payor to payor as well as state to state. Consequently, the coverage determination process is often a time-consuming and costly process that must be played out across many jurisdictions and different entities and which will require ArTara to provide scientific, clinical and health economics support for the use of its products compared to current alternatives and do so to each payor separately, with no assurance that coverage and adequate reimbursement will be obtained and in what time frame.

        Further, ArTara believes that future coverage and reimbursement likely will be subject to increased restrictions both in the United States and in international markets. Third-party coverage and reimbursement for ArTara's products may not be available or adequate in either the United States or international markets, which could harm ArTara's business, financial condition, operating results and prospects.

Even if a product candidate obtains regulatory approval, it may fail to achieve the broad degree of physician and patient adoption and use necessary for commercial success.

        The commercial success of both TARA-002 and IV Choline Chloride, if approved, will depend significantly on the broad adoption and use of them by physicians and patients for approved indications, and neither may be commercially successful even though the product is shown to be safe and effective. The degree and rate of physician and patient adoption of a product, if approved, will depend on a number of factors, including but not limited to:

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patient demand for approved products that treat the indication for which a product is approved;



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the effectiveness of the product compared to other available therapies;



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the availability of coverage and adequate reimbursement from managed care plans and other healthcare payors;



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the cost of treatment in relation to alternative treatments and willingness to pay on the part of patients;



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in the case of TARA-002, overcoming physician or patient biases toward surgery for the treatment of lymphatic malformations;



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insurers' willingness to see the applicable indication as a disease worth treating;



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proper administration;



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patient satisfaction with the results, administration and overall treatment experience;



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limitations or contraindications, warnings, precautions or approved indications for use different than those sought by ArTara that are contained in the final FDA-approved labeling for the applicable product;

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any FDA requirement to undertake a risk evaluation and mitigation strategy;



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the effectiveness of ArTara's sales, marketing, pricing, reimbursement and access, government affairs, and distribution efforts;



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adverse publicity about a product or favorable publicity about competitive products;



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new government regulations and programs, including price controls and/or limits or prohibitions on ways to commercialize drugs, such as increased scrutiny on direct-to-consumer advertising of pharmaceuticals; and



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potential product liability claims or other product-related litigation.

        If either of TARA-002 or IV Choline Chloride is approved for use but fails to achieve the broad degree of physician and patient adoption necessary for commercial success, ArTara's operating results and financial condition will be adversely affected, which may delay, prevent or limit its ability to generate revenue and continue its business.

ArTara's product candidates, if approved, will face significant competition and their failure to compete effectively may prevent them from achieving significant market penetration.

        The pharmaceutical industry is characterized by rapidly advancing technologies, intense competition, less effective patent terms, and a strong emphasis on developing newer, fast-to-market proprietary therapeutics. Numerous companies are engaged in the development, patenting, manufacturing and marketing of healthcare products competitive with those that ArTara is developing, including TARA-002 and IV Choline Chloride. ArTara will face competition from a number of sources, such as pharmaceutical companies, generic drug companies, biotechnology companies and academic and research institutions, many of which have greater financial resources, marketing capabilities, sales forces, manufacturing capabilities, research and development capabilities, regulatory expertise, clinical trial expertise, intellectual property portfolios, more international reach, experience in obtaining patents and regulatory approvals for product candidates and other resources than ArTara. 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 ArTara's target physicians, which could inhibit ArTara's market penetration efforts. attention within their clinical practices.

        With respect to ArTara's lead product candidate, TARA-002, for the treatment of LMs, the active ingredient in TARA-002 is a genetically distinct strain ofStreptococcus pyogenes (group A, type 3) Su strain. TARA-002 is produced through a proprietary manufacturing process. ArTara anticipates that, if approved by the FDA, TARA-002 will be protected by 12 years of biologic exclusivity. In addition, TARA-002 is likely to have seven years of Orphan Drug Designation exclusivity if deemed comparable to OK-432 by the FDA or based on the prevalence of the disease . There are no pharmacotherapies currently available for the treatment of LMs and the current standard of care is a high-risk surgical procedure. There are a handful of drug development companies and academic researchers exploring oral formulations of various agents including macrolides, phosphodiesterase inhibitors, and calcineurin/ mTOR inhibitors. These are in early development and earlier experiments in LMs utilizing other compounds utilizing these mechanisms have not produced conclusive evidence of safety or efficacy.

        There are no treatments currently available for IFALD. With respect to IV Choline Chloride for the treatment of IFALD, IV Choline Chloride is the only sterile injectable form of choline chloride that can be combined with parenteral nutrition. Further, if approved, IV Choline Chloride will be protected by Orphan Drug Designation exclusivity for seven years.

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TARA-002 and any future product candidates for which ArTara intends to seek approval as biologic products may face competition sooner than anticipated.

        The Patient Protection and Affordable Care Act, or Affordable Care Act, signed into law on March 23, 2010, includes a subtitle called the Biologics Price Competition and Innovation Act of 2009, or BPCIA, which created an abbreviated approval pathway for biological products that are biosimilar to or interchangeable with an FDA-licensed reference biological product. Under the BPCIA, an application for a biosimilar product may not be submitted to the FDA until four years following the date that the reference product was first licensed by the FDA. In addition, the approval of a biosimilar product may not be made effective by the FDA until 12 years from the date on which the reference product was first licensed. During this 12-year period of exclusivity, another company may still market a competing version of the reference product if the FDA approves a full BLA for the competing product containing the sponsor's own preclinical data and data from adequate and well-controlled clinical trials to demonstrate the safety, purity and potency of their product. The law is complex and is still being interpreted and implemented by the FDA. As a result, its ultimate impact, implementation and meaning are subject to uncertainty. While it is uncertain when such processes are intended to implement BPCIA may be fully adopted by the FDA, any such processes could have a material adverse effect on the future commercial prospects for ArTara's biological products.

        ArTara believes that any of its product candidates approved as a biological product under a BLA should qualify for the 12-year period of exclusivity. However, there is a risk that this exclusivity could be shortened due to congressional action or otherwise, or that the FDA will not consider ArTara's product candidates to be reference products for competing products, potentially creating the opportunity for biosimilar competition sooner than anticipated. Other aspects of the BPCIA, some of which may impact the BPCIA exclusivity provisions, have also been the subject of recent litigation. Moreover, the extent to which a biosimilar, once approved, will be substituted for any one of ArTara's reference products in a way that is similar to traditional generic substitution for non-biological products is not yet clear, and will depend on a number of marketplace and regulatory factors that are still developing.

ArTara expects to rely on third-party CROs and other third parties to conduct and oversee its clinical trials. If these third parties do not meet ArTara's requirements or otherwise conduct the trials as required, ArTara may not be able to satisfy its contractual obligations or obtain regulatory approval for, or commercialize, its product candidates.

        ArTara expects to rely on third-party contract research organizations (CROs) to conduct and oversee its TARA-002 and IV Choline Chloride clinical trials and other aspects of product development. ArTara also expects to rely on various medical institutions, clinical investigators and contract laboratories to conduct its trials in accordance with ArTara's clinical protocols and all applicable regulatory requirements, including the FDA's regulations and good clinical practice (GCP) requirements, which are an international standard meant to protect the rights and health of patients and to define the roles of clinical trial sponsors, administrators and monitors, and state regulations governing the handling, storage, security and recordkeeping for drug and biologic products. These CROs and other third parties will play a significant role in the conduct of these trials and the subsequent collection and analysis of data from the clinical trials. ArTara will rely heavily on these parties for the execution of its clinical trials and preclinical studies and will control only certain aspects of their activities. ArTara and its CROs and other third-party contractors will be required to comply with GCP and good laboratory practice (GLP) requirements, which are regulations and guidelines enforced by the FDA and comparable foreign regulatory authorities. Regulatory authorities enforce these GCP and GLP requirements through periodic inspections of trial sponsors, principal investigators and trial sites. If ArTara or any of these third parties fail to comply with applicable GCP and GLP requirements, or reveal noncompliance from an audit or inspection, the clinical data generated in

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ArTara's clinical trials may be deemed unreliable and the FDA or other regulatory authorities may require ArTara to perform additional clinical trials before approving ArTara's or ArTara's partners' marketing applications. ArTara cannot assure that upon inspection by a given regulatory authority, such regulatory authority will determine that any of ArTara's clinical or preclinical trials comply with applicable GCP and GLP requirements. In addition, ArTara's clinical trials generally must be conducted with product produced under cGMP regulations. ArTara's failure to comply with these regulations and policies may require it to repeat clinical trials, which would delay the regulatory approval process.

        If any of ArTara's CROs or clinical trial sites terminate their involvement in one of its clinical trials for any reason, it may not be able to enter into arrangements with alternative CROs or clinical trial sites or do so on commercially reasonable terms. In addition, if ArTara's relationship with clinical trial sites is terminated, it may experience the loss of follow-up information on patients enrolled in its entiretyongoing clinical trials unless ArTara is able to transfer the care of those patients to another qualified clinical trial site. In addition, principal investigators for ArTara's clinical trials may serve as scientific advisors or consultants to it from time to time and could receive cash or equity compensation in connection with such services. If these relationships and any related compensation result in perceived or actual conflicts of interest, the integrity of the data generated at the applicable clinical trial site may be questioned by the FDA.

ArTara currently has no marketing capabilities and no sales organization. If ArTara is unable to establish sales and marketing capabilities on its own or through third parties, ArTara will be unable to successfully commercialize its product candidates, if approved, or generate product revenue.

        ArTara currently has no marketing capabilities and no sales organization. To commercialize ArTara's product candidates, if approved, in the United States, Canada, the European Union, Latin America and other jurisdictions it seeks to enter, ArTara must build its marketing, sales, distribution, managerial and other non-technical capabilities or make arrangements with third parties to perform these services, and ArTara may not be successful in doing so. Although ArTara's employees have experience in the marketing, sale and distribution of pharmaceutical products, and business development activities involving external alliances, from prior employment at other companies, ArTara as a company has no prior experience in the marketing, sale and distribution of pharmaceutical products, and there are significant risks involved in building and managing a sales organization, including its ability to hire, retain and incentivize qualified individuals, generate sufficient sales leads, provide adequate training to sales and marketing personnel, and effectively manage a geographically dispersed sales and marketing team. Any failure or delay in the development of ArTara's internal sales, marketing, distribution and pricing/reimbursement/access capabilities would impact adversely the commercialization of these products.

ArTara has a very limited operating history and has never generated any revenues.

        ArTara is an early-stage biotechnology company with a very limited operating history that may make it difficult to evaluate the success of its business to date and to assess its future viability. ArTara was incorporated in 2017 and its operations, to date, have been limited to organizing and staffing the company, business planning, raising capital and in-licensing rights to TARA-002 and IV Choline Chloride, have been limited to business planning, raising capital, developing ArTara's pipeline assets (TARA-002 and IV Choline Chloride), identifying product candidates, and other research and development. ArTara has not yet demonstrated an ability to successfully complete any clinical trials and has never completed the development of any product candidate, nor has it ever generated any revenue from product sales or otherwise. Consequently, ArTara has no meaningful operations upon which to evaluate its business, and predictions about its future success or viability may not be as accurate as they could be if it had a longer operating history or a history of successfully developing and commercializing biopharmaceutical products.

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Any adverse developments that occur in patients undergoing treatment with OK-432 / Picibanil or in patients participating in clinical trials conducted by third parties may affect ArTara's ability to obtain regulatory approval or commercialize TARA-002.

        Chugai Pharmaceutical Co., Ltd., over which ArTara has no control, has the rights to commercialize TARA-002 and it is currently marketed in Japan and Taiwan, under the name Picibanil for various indications. In addition, clinical trials using Picibanil are currently ongoing in various countries around the world. If serious adverse events occur with patients using Picibanil or during any clinical trials of Picibanil conducted by third parties, the FDA may delay, limit or deny approval of TARA-002 or require ArTara to conduct additional clinical trials as a condition to marketing approval, which would increase its costs. If ArTara receives FDA approval for TARA-002 and a new and serious safety issue is identified in connection with use of Picibanil or in clinical trials of Picibanil conducted by third parties, the FDA may withdraw their approval of the product or otherwise restrict ArTara's ability to market and sell TARA-002. In addition, treating physicians may be less willing to administer TARA-002 due to concerns over such adverse events, which would limit ArTara's ability to commercialize TARA-002.

ArTara has only received the exclusive rights to the materials required to commercialize TARA-002 in territories other than Japan and Taiwan until June 17, 2024, or an earlier date if Chugai terminates the agreement with ArTara for any number of reasons, including for convenience after June 2020, following which such rights become nonexclusive.

        Pursuant to an agreement with Chugai Pharmaceutical Co., Ltd. dated June 17, 2019, Chugai agreed to provide ArTara with exclusive access to the starting material necessary to manufacture TARA-002 as well as technical support necessary for ArTara to develop and commercialize TARA-002 anywhere in the world other than Japan and Taiwan. However, this agreement does not prevent Chugai from providing such materials and support to any third party for medical, compassionate use and/or non-commercial research purposes and this agreement is not exclusive following June 17, 2024 or following any termination of the agreement by either party, which includes a termination by Chugai for convenience, which it has the right to do upon 90 days' notice after June 2020. Once ArTara's rights to the materials and technology necessary to manufacture, develop and commercialize TARA-002 are not exclusive, third parties, including those with greater expertise and greater resources, could obtain such materials and technology and develop a competing therapy, which would adversely affect ArTara's ability to generate revenue and achieve or maintain profitability.

ArTara currently has no products approved for sale, and it may never obtain regulatory approval to commercialize any of its product candidates.

        The research, testing, manufacturing, safety surveillance, efficacy, quality control, recordkeeping, labeling, packaging, storage, approval, sale, marketing, distribution, import, export and reporting of safety and other post-market information related to its biopharmaceutical products are subject to extensive regulation by the FDA and other regulatory authorities in the United States and in foreign countries, and such regulations differ from country to country and frequently are revised.

        Even after ArTara achieves U.S. regulatory approval for a product candidate, if any, ArTara will be subject to continued regulatory review and compliance obligations. For example, with respect to ArTara's product candidates, the FDA may impose significant restrictions on the approved indicated uses for which the product may be marketed or on the conditions of approval. A product candidate's approval may contain requirements for potentially costly post-approval studies and surveillance, including Phase 4 clinical trials, to monitor the safety and efficacy of the product. ArTara also will be subject to ongoing FDA obligations and continued regulatory review with respect to, among other things, the manufacturing, processing, labeling, packaging, distribution, pharmacovigilance and adverse event reporting, storage, advertising, promotion and recordkeeping for ArTara's product candidates.

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These requirements include submissions of safety and other post-marketing information and reports, registration, continued compliance with cGMP requirements and with the FDA's GCP requirements and GLP requirements, which are regulations and guidelines enforced by the FDA for all of ArTara's product candidates in clinical and preclinical development, and for any clinical trials that it conducts post-approval, as well as continued compliance with the FDA's laws governing commercialization of the approved product, including but not limited to the FDA's Office of Prescription Drug Promotion (OPDP) regulation of promotional activities, fraud and abuse, product sampling, scientific speaker engagements and activities, formulary interactions as well as interactions with healthcare practitioners. To the extent that a product candidate is approved for sale in other countries, ArTara may be subject to similar or more onerous (i.e., prohibition on direct-to-consumer advertising that does not exist in the United States.) restrictions and requirements imposed by laws and government regulators in those countries.

        In addition, manufacturers of drug and biologic products and their facilities are subject to continual review and periodic inspections by the FDA and other regulatory authorities for compliance with cGMP regulations. If ArTara or a regulatory agency discovers previously unknown problems with a product, such as adverse events of unanticipated severity or frequency, or problems with the manufacturing, processing, distribution or storage facility where, or processes by which, the product is made, a regulatory agency may impose restrictions on that product or ArTara, including requesting that ArTara initiate a product recall, or requiring notice to physicians or the public, withdrawal of the product from the market, or suspension of manufacturing.

        If ArTara, its product candidates or the manufacturing facilities for its product candidates fail to comply with applicable regulatory requirements, a regulatory agency may:

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impose restrictions on the sale, marketing or manufacturing of the product, amend, suspend or withdraw product approvals or revoke necessary licenses;



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mandate modifications to promotional and other product-specific materials or require ArTara to provide corrective information to healthcare practitioners or in its advertising;



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require ArTara or its partners to enter into a consent decree, which can include imposition of various fines, reimbursements for inspection costs, required due dates for specific actions, penalties for noncompliance and, in extreme cases, require an independent compliance monitor to oversee ArTara's activities;



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issue warning letters, bring enforcement actions, initiate surprise inspections, issue show cause notices or untitled letters describing alleged violations, which may be publicly available;



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commence criminal investigations and prosecutions;



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impose injunctions, suspensions or revocations of necessary approvals or other licenses;



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impose other civil or criminal penalties;



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suspend any ongoing clinical trials;



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place restrictions on the kind of promotional activities that can be done;



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delay or refuse to approve pending applications or supplements to approved applications filed by ArTara or its potential partners;



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refuse to permit drugs or precursor chemicals to be imported or exported to or from the United States;



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suspend or impose restrictions on operations, including costly new manufacturing requirements; or

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seize or detain products or require ArTara or its partners to initiate a product recall.

        The regulations, policies or guidance of the FDA and other applicable government agencies may change, and new or additional statutes or government regulations may be enacted, including at the state and local levels, which can differ by geography and could prevent or delay regulatory approval of ArTara's product candidates or further restrict or regulate post-approval activities. ArTara cannot predict the likelihood, nature or extent of adverse government regulations that may arise from future legislation or administrative action, either in the United States or abroad. If ArTara is not able to achieve and maintain regulatory compliance, it may not be permitted to commercialize its product candidates, which would adversely affect its ability to generate revenue and achieve or maintain profitability.

ArTara may in the future conduct clinical trials for its product candidates outside the United States, and the FDA and applicable foreign regulatory authorities may not accept data from such trials.

        ArTara may in the future choose to conduct one or more of its clinical trials outside of the United States. Although the FDA or applicable foreign regulatory authority may accept data from clinical trials conducted outside the United States or the applicable jurisdiction, acceptance of such study data by the FDA or applicable foreign regulatory authority may be subject to certain conditions or exclusion. Where data from foreign clinical trials are intended to serve as the basis for marketing approval in the United States, the FDA will not approve the application on the basis of foreign data alone unless such data are applicable to the U.S. population and U.S. medical practice; the studies were performed by clinical investigators of recognized competence; and the data are considered valid without the need for an on-site inspection by the FDA or, if the FDA considers such an inspection to be necessary, the FDA is able to validate the data through an on-site inspection or other appropriate means. Many foreign regulatory bodies have similar requirements. In addition, such foreign studies would be subject to the applicable local laws of the foreign jurisdictions where the studies are conducted. There can be no assurance the FDA or applicable foreign regulatory authority will accept data from trials conducted outside of the United States or the applicable home country. If the FDA or applicable foreign regulatory authority does not accept such data, it would likely result in the need for additional trials, which would be costly and time-consuming and delay aspects of ArTara's business plan.

ArTara may face product liability exposure, and if successful claims are brought against it, ArTara may incur substantial liability if its insurance coverage for those claims is inadequate.

        ArTara faces an inherent risk of product liability or similar causes of action as a result of the clinical testing of its product candidates and will face an even greater risk if ArTara commercializes any products. This risk exists even if a product is approved for commercial sale by the FDA and manufactured in facilities licensed and regulated by the FDA or an applicable foreign regulatory authority and notwithstanding ArTara complying with applicable laws on promotional activity. ArTara's products and product candidates are designed to affect important bodily functions and processes. Any side effects, manufacturing defects, misuse or abuse associated with ArTara's product candidates could result in injury to a patient or potentially even death. ArTara cannot offer any assurance that it will not face product liability suits in the future, nor can it assure that its insurance coverage will be sufficient to cover its liability under any such cases.

        In addition, a liability claim may be brought against ArTara even if its product candidates merely appear to have caused an injury. Product liability claims may be brought against ArTara by consumers, healthcare providers, pharmaceutical companies or others selling or otherwise coming into contact with its product candidates, among others, and under some circumstances even government agencies. If ArTara cannot successfully defend itself against product liability or similar claims, it will incur

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substantial liabilities, reputational harm and possibly injunctions and punitive actions. In addition, regardless of merit or eventual outcome, product liability claims may result in:

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withdrawal or delay of recruitment or decreased enrollment rates of clinical trial participants;



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termination or increased government regulation of clinical trial sites or entire trial programs;



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the inability to commercialize ArTara's product candidates;



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decreased demand for ArTara's product candidates;



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impairment of ArTara's business reputation;



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product recall or withdrawal from the market or labeling, marketing or promotional restrictions;



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substantial costs of any related litigation or similar disputes;



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distraction of management's attention and other resources from ArTara's primary business;



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significant delay in product launch;



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substantial monetary awards to patients or other claimants against ArTara that may not be covered by insurance;



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withdrawal of reimbursement or formulary inclusion; or



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loss of revenue.

        ArTara intends to obtain product liability insurance coverage for its clinical trials. Large judgments have been awarded in class action or individual lawsuits based on drugs that had unanticipated side effects. ArTara's insurance coverage may not be sufficient to cover all of its product liability-related expenses or losses and may not cover it for any expenses or losses it may suffer. Moreover, insurance coverage is becoming increasingly expensive, restrictive and narrow, and, in the future, ArTara may not be able to maintain adequate insurance coverage at a reasonable cost, in sufficient amounts or upon adequate terms to protect it against losses due to product liability or other similar legal actions. ArTara will need to increase its product liability coverage if any of its product candidates receive regulatory approval, which will be costly, and it may be unable to obtain this increased product liability insurance on commercially reasonable terms or at all and for all geographies in which ArTara wishes to launch. A successful product liability claim or series of claims brought against ArTara, if judgments exceed its insurance coverage, could decrease its cash and harm its business, financial condition, operating results and future prospects.

ArTara's employees, independent contractors, principal investigators, other clinical trial staff, consultants, vendors, CROs and any partners with whom ArTara may collaborate may engage in misconduct or other improper activities, including noncompliance with regulatory standards and requirements.

        ArTara is exposed to the risk that its employees, independent contractors, principal investigators, other clinical trial staff, consultants, vendors, CROs and any partners with which ArTara may collaborate may engage in fraudulent or other illegal activity. Misconduct by these risk factors.persons could include intentional, reckless, gross or negligent misconduct or unauthorized activity that violates: laws or regulations, including those laws requiring the reporting of true, complete and accurate information to the FDA or foreign regulatory authorities; manufacturing standards; federal, state and foreign healthcare fraud and abuse laws and data privacy; anticorruption laws, antikickback and Medicare/Medicaid rules, or laws that require the true, complete and accurate reporting of financial information or data, books and records. If any such or similar actions are instituted against ArTara and ArTara is not successful in defending itself or asserting ArTara's rights, those actions could have a significant impact on ArTara's business, including the imposition of civil, criminal and administrative and punitive penalties, damages, monetary fines, possible exclusion from participation in Medicare, Medicaid and

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other federal healthcare programs, debarments, contractual damages, reputational harm, diminished profits and future earnings, injunctions, and curtailment or cessation of ArTara's operations, any of which could adversely affect ArTara's ability to operate ArTara's business and ArTara's operating results.

ArTara may be subject to risks related to off-label use of its product candidates.

Additional Risks RelatingThe FDA strictly regulates the advertising and promotion of drug products, and drug products may only be marketed or promoted for their FDA approved uses, consistent with the product's approved labeling. Advertising and promotion of any product candidate that obtains approval in the United States will be heavily scrutinized by the FDA, the Department of Justice, the Office of Inspector General of the Department of Health and Human Services, state attorneys general, members of Congress and the public. Violations, including promotion of ArTara's products for unapproved or off-label uses, are subject to This Offeringenforcement letters, inquiries and Our Common Stockinvestigations, and civil, criminal and/or administrative sanctions by the FDA. Additionally, advertising and promotion of any product candidate that obtains approval outside of the United States will be heavily scrutinized by relevant foreign regulatory authorities.

        Even if ArTara obtains regulatory approval for its product candidates, the FDA or comparable foreign regulatory authorities may require labeling changes or impose significant restrictions on a product's indicated uses or marketing or impose ongoing requirements for potentially costly post-approval studies or post-market surveillance.

        In the United States, engaging in impermissible promotion of ArTara's product candidates for off-label uses can also subject it to false claims litigation under federal and state statutes, which can lead to civil, criminal and/or administrative penalties and fines and agreements, such as a corporate integrity agreement, that materially restrict the manner in which ArTara promotes or distributes its product candidates. If ArTara does not lawfully promote its products once they have received regulatory approval, ArTara may become subject to such litigation and, if it is not successful in defending against such actions, those actions could have a material adverse effect on its business, financial condition and operating results and even result in having an independent compliance monitor assigned to audit ArTara's ongoing operations for a lengthy period of time.

TheArTara's or third party's clinical trials may fail to demonstrate the safety and efficacy of its product candidates, or serious adverse or unacceptable side effects may be identified during their development, which could prevent or delay marketing approval and commercialization, increase ArTara's costs or necessitate the abandonment or limitation of the development of the product candidate.

        Before obtaining marketing approvals for the commercial sale of any product candidate, ArTara must demonstrate through lengthy, complex and expensive preclinical testing and clinical trials that such product candidate is both safe and effective for use in the applicable indication, and failures can occur at any stage of testing. Clinical trials often fail to demonstrate safety and are associated with side effects or have characteristics that are unexpected. Based on the safety profile seen in clinical testing, ArTara may need to abandon development or limit development to more narrow uses in which the side effects or other characteristics are less prevalent, less severe or more tolerable from a risk-benefit perspective. The FDA or an IRB may also require that ArTara suspend, discontinue, or limit clinical trials based on safety information. Such findings could further result in regulatory authorities failing to provide marketing authorization for the product candidate. Many pharmaceutical candidates that initially showed promise in early stage testing and which were efficacious have later been found to cause side effects that prevented further development of the drug candidate and, in extreme cases, the side effects were not seen until after the drug was marketed, causing regulators to remove the drug from the market post-approval.

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        ArTara's regulatory strategy for TARA-002 requires first that it can demonstrate that TARA-002 is the same biologic substance as OK-432, which is currently manufactured in Japan and marketed in Japan and Taiwan by Chugai. In order to demonstrate comparability, ArTara plans to conduct studies using batches of OK-432 from Japan and batches of TARA-002 manufactured in the United States by its CMO. If ArTara can demonstrate comparability, it plans to engage with the FDA to seek its agreement to use OK-432's safety and efficacy data from clinical trials previously conducted by third parties for its BLA filing. There can be no assurances that ArTara's CMO will be able to produce a sufficiently comparable product or that the FDA will find such substances comparable or permit ArTara to use any of the data from prior clinical trials as part of the BLA filing for TARA-002.

ArTara may choose not to continue developing or commercializing any of its product candidates at any time during development or after approval, which would reduce or eliminate its potential return on investment for those product candidates.

        At any time, ArTara may decide to discontinue the development of any of its product candidates for a variety of reasons, including the appearance of new technologies that make its product obsolete, competition from a competing product or changes in or failure to comply with applicable regulatory requirements. If ArTara terminates a program in which it has invested significant resources, ArTara will not receive any return on its investment and it will have missed the opportunity to have allocated those resources to potentially more productive uses.

Healthcare reform measures could hinder or prevent the commercial success of ArTara's product candidates.

        The current presidential administration and certain members of the majority of the U.S. Congress have sought to repeal all or part of the Patient Protection and Affordable Care Act, as amended by the Health Care and Education Reconciliation Act (collectively, "Affordable Care Act"), and implement a replacement program. For example, the so-called "individual mandate" was repealed as part of tax reform legislation adopted in December 2017, such that the shared responsibility payment for individuals who fail to maintain minimum essential coverage under section 5000A of the Code was eliminated beginning in 2019. In addition, litigation may prevent some or all of the Affordable Care Act legislation from taking effect. For example, on December 14, 2018, the U.S. District Court for the Northern District of Texas held that the individual mandate is a critical and inseverable feature of the Affordable Care Act, and therefore, because it was repealed as part of the tax reform legislation, the remaining provisions of the Affordable Care Act are invalid as well. The impact of this ruling is stayed as it is appealed to the Fifth Circuit Court of Appeals. While the ruling will have no immediate effect, it is unclear how this decision, and subsequent appeals, if any, will impact the law. In 2019 and beyond, ArTara may face additional uncertainties as a result of likely federal and administrative efforts to repeal, substantially modify or invalidate some or all of the provisions of the Affordable Care Act. There is no assurance that the Affordable Care Act, as amended in the future, will not adversely affect ArTara's business and financial results.

        Additionally, in October 2018, the U.S. President proposed to lower Medicare Part B drug prices, in addition to contemplating other measures to lower prescription drug prices. While this proposal has not yet been enacted, ArTara expects that additional state and federal 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, which could result in reduced demand for its product candidates if approved or additional pricing pressures.

        There are also calls to ban all direct-to-consumer advertising of pharmaceuticals, which would limit ArTara's ability to market its product candidates. The United States is in a minority of jurisdictions that allow this kind of advertising and its removal could limit the potential reach of a marketing campaign.

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ArTara may also be subject to stricter healthcare laws, regulation and enforcement, and its failure to comply with those laws could adversely affect its business, operations and financial condition.

        Certain federal and state healthcare laws and regulations pertaining to fraud and abuse and patients' rights are and will be applicable to ArTara's business. ArTara is subject to regulation by both the federal government and the states in which it or its partners conduct business. The healthcare laws and regulations that may affect ArTara's ability to operate include: the federal Anti-Kickback Statute; federal civil and criminal false claims laws and civil monetary penalty laws; the federal Health Insurance Portability and Accountability Act of 1996, as amended by the Health Information Technology for Economic and Clinical Health Act; the Prescription Drug Marketing Act (for sampling of drug product among other things); the federal physician sunshine requirements under the Affordable Care Act; the Foreign Corrupt Practices Act as it applies to activities outside of the United States; the new federal Right-to-Try legislation; and state law equivalents of many of the above federal laws.

        Because of the breadth of these laws and the narrowness of the statutory exceptions and safe harbors available, it is possible that some of ArTara's business activities could be subject to challenge under one or more of such laws. In addition, recent healthcare reform legislation has strengthened these laws. For example, the recently enacted Affordable Care Act, among other things, amended the intent requirement of the federal Anti-Kickback Statute and certain criminal healthcare fraud statutes. A person or entity no longer needs to have actual knowledge of the statute or specific intent to violate it. In addition, the Affordable Care Act provided that the government may assert that a claim including items or services resulting from a violation of the federal Anti-Kickback Statute constitutes a false or fraudulent claim for purposes of the federal civil False Claims Act.

        Achieving and sustaining compliance with these laws may prove costly. In addition, any action against ArTara for violation of these laws, even if ArTara successfully defends against it, could cause ArTara to incur significant legal expenses and divert its management's attention from the operation of its business and result in reputational damage. If ArTara's operations are found to be in violation of any of the laws described above or any other governmental laws or regulations that apply to ArTara, it may be subject to penalties, including administrative, civil and criminal penalties, damages, including punitive damages, fines, disgorgement, the exclusion from participation in federal and state healthcare programs, individual imprisonment or the curtailment or restructuring of its operations, and injunctions, any of which could adversely affect ArTara's ability to operate its business and its financial results.

ArTara intends to in-license and acquire product candidates and may engage in other strategic transactions, which could impact its liquidity, increase its expenses and present significant distractions to its management.

        ArTara's strategy is to in-license and acquire product candidates and it may engage in other strategic transactions. Additional potential transactions that ArTara may consider include a variety of different business arrangements, including spin-offs, strategic partnerships, joint ventures, restructurings, divestitures, business combinations and investments. Any such transaction may require ArTara to incur non-recurring or other charges, may increase its near- and long-term expenditures and may pose significant integration challenges or disrupt its management or business, which could adversely affect its operations and financial results. Accordingly, there can be no assurance that ArTara will undertake or successfully complete any transactions of the nature described above, and any transaction that it does complete could harm its business, financial condition, operating results and prospects. ArTara has no current plan, commitment or obligation to enter into any transaction described above, and ArTara is not engaged in discussions related to additional partnerships.

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ArTara's failure successfully to in-license, acquire, develop and market additional product candidates or approved products would impair its ability to grow its business.

        ArTara intends to in-license, acquire, develop and market additional products and product candidates. Because ArTara's internal research and development capabilities are limited, it may be dependent on pharmaceutical companies, academic or government scientists and other researchers to sell or license products or technology to it. The success of this strategy depends partly on ArTara's ability to identify and select promising pharmaceutical product candidates and products, negotiate licensing or acquisition agreements with their current owners, and finance these arrangements.

        The process of proposing, negotiating and implementing a license or acquisition of a product candidate or approved product is lengthy and complex. Other companies, including some with substantially greater financial, marketing, sales and other resources, may compete with ArTara for the license or acquisition of product candidates and approved products. ArTara has limited resources to identify and execute the acquisition or in-licensing of third-party products, businesses and technologies and integrate them into its current infrastructure. Moreover, ArTara may devote resources to potential acquisitions or licensing opportunities that are never completed, or ArTara may fail to realize the anticipated benefits of such efforts. ArTara may not be able to acquire the rights to additional product candidates on terms that it finds acceptable or at all.

        Further, any product candidate that ArTara acquires may require additional development efforts prior to commercial sale, including preclinical or clinical testing and approval by the FDA and applicable foreign regulatory authorities. All product candidates are prone to risks of failure typical of pharmaceutical product development, including the possibility that a product candidate will not be shown to be sufficiently safe and effective for approval by regulatory authorities. In addition, ArTara cannot provide assurance that any approved products that it acquires will be manufactured or sold profitably or achieve market acceptance.

ArTara expects to rely on collaborations with third parties for the successful development and commercialization of its product candidates.

        ArTara expects to rely upon the efforts of third parties for the successful development and commercialization of ArTara's current and future product candidates. The clinical and commercial success of ArTara's product candidates may depend upon maintaining successful relationships with third-party partners which are subject to a number of significant risks, including the following:

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ArTara's partners' ability to execute their responsibilities in a timely, cost-efficient and compliant manner;



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reduced control over delivery and manufacturing schedules;



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price increases and product reliability;



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manufacturing deviations from internal or regulatory specifications;



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quality incidents;



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the failure of partners to perform their obligations for technical, market or other reasons;



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misappropriation of ArTara's current or future product candidates; and



•

other risks in potentially meeting ArTara's current and future product commercialization schedule or satisfying the requirements of its end-users.

        ArTara cannot assure you that it will be able to establish or maintain third-party relationships in order to successfully develop and commercialize its product candidates.

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ArTara relies completely on third-party contractors to supply, manufacture and distribute clinical drug supplies for its product candidates, which may include sole-source suppliers and manufacturers; ArTara intends to rely on third parties for commercial supply, manufacturing and distribution if any of its product candidates receive regulatory approval; and ArTara expects to rely on third parties for supply, manufacturing and distribution of preclinical, clinical and commercial supplies of any future product candidates.

        ArTara does not currently have, nor does it plan to acquire, the infrastructure or capability to supply, store, manufacture or distribute preclinical, clinical or commercial quantities of drug substances or products. Additionally, ArTara has not entered into a long-term commercial supply agreement to provide it with such drug substances or products. As a result, ArTara's ability to develop its product candidates is dependent, and ArTara's ability to supply its products commercially will depend, in part, on ArTara's ability to obtain the APIs and other substances and materials used in its product candidates successfully from third parties and to have finished products manufactured by third parties in accordance with regulatory requirements and in sufficient quantities for preclinical and clinical testing and commercialization. If ArTara fails to develop and maintain supply and other technical relationships with these third parties, it may be unable to continue to develop or commercialize its products and product candidates.

        ArTara does not have direct control over whether its contract suppliers and manufacturers will maintain current pricing terms, be willing to continue supplying ArTara with APIs and finished products or maintain adequate capacity and capabilities to serve its needs, including quality control, quality assurance and qualified personnel. ArTara is dependent on its contract suppliers and manufacturers for day-to-day compliance with applicable laws and cGMPs for production of both APIs and finished products. If the safety or quality of any product or product candidate or component is compromised due to a failure to adhere to applicable laws or for other reasons, ArTara may not be able to commercialize or obtain regulatory approval for the affected product or product candidate successfully, and ArTara may be held liable for injuries sustained as a result.

        In order to conduct larger or late-stage clinical trials for its product candidates and supply sufficient commercial quantities of the resulting drug product and its components, if that product candidate is approved for sale, ArTara's contract manufacturers and suppliers will need to produce its drug substances and product candidates in larger quantities, more cost-effectively and, in certain cases, at higher yields than they currently achieve. If ArTara's third-party contractors are unable to scale up the manufacture of any of its product candidates successfully in sufficient quality and quantity and at commercially reasonable prices, or are shut down or put on clinical hold by government regulators, and ArTara is unable to find one or more replacement suppliers or manufacturers capable of production at a substantially equivalent cost in substantially equivalent volumes and quality, and ArTara is unable to transfer the processes successfully on a timely basis, the development of that product candidate and regulatory approval or commercial launch for any resulting products may be delayed, or there may be a shortage in supply, either of which could significantly harm its business, financial condition, operating results and prospects.

        ArTara expects to continue to depend on third-party contract suppliers and manufacturers for the foreseeable future. ArTara's supply and manufacturing agreements, if any, do not guarantee that a contract supplier or manufacturer will provide services adequate for its needs. Additionally, any damage to or destruction of ArTara's third-party manufacturer's or suppliers' facilities or equipment, even by force majeure, may significantly impair its ability to have its products and product candidates manufactured on a timely basis. ArTara's reliance on contract manufacturers and suppliers further exposes it to the possibility that they, or third parties with access to their facilities, will have access to and may misappropriate ArTara's trade secrets or other proprietary information. In addition, the manufacturing facilities of certain of ArTara's suppliers may be located outside of the United States. This may give rise to difficulties in importing ArTara's products or product candidates or their components into the United States or other countries.

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The manufacture of biologics is complex and ArTara's third-party manufacturers may encounter difficulties in production. If ArTara's CMO encounter such difficulties, the ability to provide supply of TARA-002 for clinical trials, ArTara's ability to obtain marketing approval, or its ability to obtain commercial supply of TARA-002, if approved, could be delayed or stopped.

        ArTara's has no experience in biologic manufacturing and does not own or operate, and it does not expect to own or operate, facilities for product manufacturing, storage and distribution, or testing. ArTara is completely dependent on CMOs to fulfill its clinical and commercial supply of TARA-002. The process of manufacturing biologics is complex, highly regulated and subject to multiple risks. Manufacturing biologics is highly susceptible to product loss due to contamination, equipment failure, improper installation or operation of equipment, vendor or operator error, inconsistency in yields, variability in product characteristics and difficulties in scaling the production process. Even minor deviations from normal manufacturing processes could result in reduced production yields, product defects and other supply disruptions and higher costs. If microbial, viral or other contaminations are discovered at the facilities of ArTara's manufacturer, such facilities may need to be closed for an extended period of time to investigate and remedy the contamination, which could delay clinical trials, result in higher costs of drug product and adversely harm its business. Moreover, if the FDA determines that ArTara's manufacturer is not in compliance with FDA laws and regulations, including those governing cGMPs, the FDA may deny BLA approval until the deficiencies are corrected or it replaces the manufacturer in its BLA with a manufacturer that is in compliance.

        In addition, there are risks associated with large scale manufacturing for clinical trials or commercial scale including, among others, cost overruns, potential problems with process scale-up, process reproducibility, stability issues, compliance with cGMPs, lot consistency and timely availability of raw materials. Even if ArTara obtains regulatory approval for TARA-002 or any future product candidates, there is no assurance that its manufacturers will be able to manufacture the approved product to specifications acceptable to the FDA or other regulatory authorities, to produce it in sufficient quantities to meet the requirements for the potential launch of the product or to meet potential future demand. If ArTara's manufacturers are unable to produce sufficient quantities for clinical trials or for commercialization, commercialization efforts would be impaired, which would have an adverse effect on ArTara's business, financial condition, results of operations and growth prospects. Scaling up a biologic manufacturing process is a difficult and uncertain task, and any CMO ArTara contracts may not have the necessary capabilities to complete the implementation and development process of further scaling up production, transferring production to other sites, or managing its production capacity to timely meet product demand.

The audit report of ArTara's independent registered public accounting firm expresses substantial doubt about ArTara's ability to continue as a going concern.

        The audit report from ArTara's independent registered public accounting firm expresses substantial doubt that it can continue as an ongoing business due to uncertainties that ArTara's cash flows generated from its operations will be sufficient to meet its current operating costs and ArTara's future financial statements may include a similar qualification about its ability to continue as a going concern. ArTara's audited financial statements were prepared assuming that it will continue as a going concern and do not include any adjustments that may result from the outcome of this uncertainty.

        If ArTara is unable to meet its current operating costs, ArTara would need to seek additional financing or modify its operational plans. If ArTara seeks additional financing to fund its business activities in the future and there remains substantial doubt about its ability to continue as a going concern, investors or other financing sources may be unwilling to provide additional funding to ArTara on commercially reasonable terms or at all.

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ArTara has identified material weaknesses in its internal control over financial reporting. If ArTara's internal control over financial reporting is not effective, it may not be able to accurately report its financial results or file its periodic reports in a timely manner, which may cause adverse effects on ArTara's business and may cause investors to lose confidence in its reported financial information and may lead to a decline in ArTara's stock price.

        Effective internal control over financial reporting is necessary for ArTara to provide reliable financial reports in a timely manner. In connection with the audits of ArTara's financial statements for the quarters ended June 30, 2019 and September 30, 2019, ArTara concluded that there were material weaknesses in its internal control over financial reporting. A material weakness is a deficiency, or a combination of deficiencies, in internal control over financial reporting, such that there is a reasonable possibility that a material misstatement of the annual or interim financial statements will not be prevented or detected on a timely basis.

        If ArTara is unable to successfully remediate its material weaknesses or identify any future significant deficiencies or material weaknesses, the accuracy and timing of ArTara's financial reporting may be adversely affected, a material misstatement in its financial statements could occur, ArTara may be unable to maintain compliance with securities law requirements regarding timely filing of periodic reports, which may adversely affect its business and ArTara's stock price may decline as a result.

        In addition, even if ArTara remediates its material weaknesses, following the completion of this Merger, ArTara will be required to expend significant time and resources to further improve its internal controls over financial reporting, including by further expanding its finance and accounting staff to meet the demands that will be placed upon ArTara as a public company, including the requirements of the Sarbanes-Oxley Act. If ArTara fails to adequately staff its accounting and finance function to remediate its material weaknesses, or fails to maintain adequate internal control over financial reporting, any new or recurring material weaknesses could prevent ArTara's management from concluding its internal control over financial reporting is effective and impair ArTara's ability to prevent material misstatements in its financial statements, which could cause ArTara's business to suffer.

ArTara will need to raise additional financing in the future to fund ArTara's operations, which may not be available to it on favorable terms or at all.

        ArTara will require substantial additional funds to conduct the costly and time-consuming clinical efficacy trials necessary to pursue regulatory approval of each potential product candidate and to continue the development of TARA-002 and IV Choline Chloride in new indications or uses. ArTara's future capital requirements will depend upon a number of factors, including: the number and timing of future product candidates in the pipeline; progress with and results from preclinical testing and clinical trials; the ability to manufacture sufficient drug supplies to complete preclinical and clinical trials; the costs involved in preparing, filing, acquiring, prosecuting, maintaining and enforcing patent and other intellectual property claims; and the time and costs involved in obtaining regulatory approvals and favorable reimbursement or formulary acceptance. Raising additional capital may be costly or difficult to obtain and could significantly dilute stockholders' ownership interests or inhibit ArTara's ability to achieve its business objectives. If ArTara raises additional funds through public or private equity offerings, the terms of these securities may include liquidation or other preferences that adversely the rights of its common stockholders. Further, to the extent that ArTara raises additional capital through the sale of common stock or securities convertible or exchangeable into common stock, your ownership interest in ArTara will be diluted. In addition, any debt financing may subject ArTara to fixed payment obligations and covenants limiting or restricting its ability to take specific actions, such as incurring additional debt, making capital expenditures or declaring dividends. If ArTara raises additional capital through marketing and distribution arrangements or other collaborations, strategic alliances or licensing arrangements with third parties, ArTara may have to relinquish certain valuable intellectual property or other rights to its product candidates, technologies, future revenue streams or research programs or

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grant licenses on terms that may not be favorable to it. Even if ArTara were to obtain sufficient funding, there can be no assurance that it will be available on terms acceptable to ArTara or its stockholders.

ArTara expects its stock price to be highly volatile.

        The market price of ArTara's shares could be subject to significant fluctuations. Market prices for securities of biotechnology and other life sciences companies historically have been particularly volatile subject even to large daily price swings. Some of the factors that may cause the market price of ArTara's shares to fluctuate include, but are not limited to:

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the ability of ArTara to obtain timely regulatory approvals for TARA-002, IV Choline Chloride or future product candidates, and delays or failures to obtain such approvals;



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failure of TARA-002 or IV Choline Chloride, if approved, to achieve commercial success;



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issues in manufacturing TARA-002, IV Choline Chloride or future product candidates;



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the results of current and any future clinical trials of TARA-002 or IV Choline Chloride;



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failure of other ArTara product candidates, if approved, to achieve commercial success;



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the entry into, or termination of, or breach by partners of key agreements, including key commercial partner agreements;



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the initiation of, material developments in, or conclusion of any litigation to enforce or defend any intellectual property rights or defend against the intellectual property rights of others;



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announcements of any dilutive equity financings;



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announcements by commercial partners or competitors of new commercial products, clinical progress or the lack thereof, significant contracts, commercial relationships or capital commitments;



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failure to elicit meaningful stock analyst coverage and downgrades of the company's stock by analysts; and



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the loss of key employees.

        Moreover, the stock markets in general have experienced substantial volatility in our industry that has often been unrelated to the operating performance of individual companies or a certain industry segment. These broad market fluctuations may also adversely affect the trading price of ArTara's shares.

        In the past, following periods of volatility in the market price of a company's securities, shareholders have often instituted class action securities litigation against those companies. Such litigation, if instituted, could result in substantial costs and diversion of management attention and resources, which could significantly harm ArTara's profitability and reputation. In addition, such securities litigation often has ensued after a reverse merger or other merger and acquisition activity. Such litigation if brought could impact negatively ArTara 's business.

ArTara will incur costs and demands upon management as a result of complying with the laws and regulations affecting public companies.

        ArTara will incur significant legal, accounting and other expenses that ArTara did not incur as a private company, including costs associated with public company reporting and other SEC requirements. ArTara also will incur costs associated with corporate governance requirements, including requirements under the Sarbanes-Oxley Act, as well as new rules implemented by the SEC and Nasdaq.

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These rules and regulations are expected to increase ArTara's legal and financial compliance costs and to make some activities more time-consuming and costly. ArTara's executive officers and other personnel will need to devote substantial time to gaining expertise regarding operations as a public company and compliance with applicable laws and regulations. These rules and regulations may also make it expensive for ArTara to operate its business.

ArTara is expected to take advantage of reduced disclosure and governance requirements applicable to smaller reporting companies, which could result in its common stock being less attractive to investors.

        ArTara expects to have a public float of less than $250 million and therefore will qualify as a smaller reporting company under the rules of the SEC. As a smaller reporting company, ArTara will be able to take advantage of reduced disclosure requirements, such as simplified executive compensation disclosures and reduced financial statement disclosure requirements in its SEC filings. Decreased disclosures in ArTara's SEC filings due to its status as a smaller reporting company may make it harder for investors to analyze its results of operations and financial prospects. We cannot predict if investors will find ArTara's common stock less attractive if it relies on these exemptions. If some investors find its common stock less attractive as a result, there may be a less active trading market for its common stock and its stock price may be more volatile. ArTara may take advantage of the reporting exemptions applicable to a smaller reporting company until it is no longer a smaller reporting company, which status would end once it has a public float greater than $250 million. In that event, ArTara could still be a smaller reporting company if its annual revenues were below $100 million and it has a public float of less than $700 million.

ArTara does not anticipate paying any dividends in the foreseeable future.

        The current expectation is that ArTara will retain its future earnings to fund the development and growth of the Company's business. As a result, capital appreciation, if any, of the shares of ArTara will be your sole source of gain, if any, for the foreseeable future.

If ArTara fails to attract and retain management and other key personnel, it may be unable to continue to successfully develop or commercialize its product candidates or otherwise implement its business plan.

        ArTara's ability to compete in the highly competitive pharmaceuticals industry depends on its ability to attract and retain highly qualified managerial, scientific, medical, legal, sales and marketing and other personnel. ArTara is highly dependent on its management and scientific personnel. The loss of the services of any of these individuals could impede, delay or prevent the successful development of ArTara's product pipeline, completion of its planned clinical trials, commercialization of its product candidates or in-licensing or acquisition of new assets and could impact negatively its ability to implement successfully its business plan. If ArTara loses the services of any of these individuals, it might not be able to find suitable replacements on a timely basis or at all, and its business could be harmed as a result. ArTara might not be able to attract or retain qualified management and other key personnel in the future due to the intense competition for qualified personnel among biotechnology, pharmaceutical and other businesses.

ArTara's ability to use its net operating loss carry-forwards to offset future taxable income may be subject to certain limitations.

        As of December 31, 2018, for U.S. federal and state income tax reporting purposes, ArTara has approximately $4.1 million of unused net operating losses ("NOLs") available for carry forward to future years. The 2018 federal and New York City NOLs may be carried forward indefinitely, but utilization will be subject to an annual deduction limitation of 80% of taxable income. These 2018 losses will not be allowed to be carried back. The 2018 state NOLs may be carried forward through the year 2037 and may be applied against future taxable income. The 2017 federal and New York City

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NOLs will begin to expire during the year ended December 31, 2037. It is possible that ArTara will not generate taxable income in time to use these loss carry-forwards before their expiration. ArTara's net operating loss carryforwards may also be subject to limitation as a result of prior shifts in equity ownership and/or the Merger. In addition, ArTara may experience ownership changes in the future as a result of offerings of stock or subsequent shifts in its stock ownership, some of which are outside of its control. In that case, the ability to use net operating loss carry-forwards to offset future taxable income will be limited following any such ownership change.

ArTara may be adversely affected by natural disasters and other catastrophic events and by man-made problems such as terrorism that could disrupt its business operations, and its business continuity and disaster recovery plans may not adequately protect it from a serious disaster.

        ArTara's corporate office is located in New York, New York. If a disaster, power outage, computer hacking, or other event occurred that prevented ArTara from using all or a significant portion of an office, that damaged critical infrastructure, such as enterprise financial systems, IT systems, manufacturing resource planning or enterprise quality systems, or that otherwise disrupted operations, it may be difficult or, in certain cases, impossible for it to continue its business for a substantial period of time. ArTara's contract manufacturer's and suppliers' facilities are located in multiple locations where other natural disasters or similar events, such as tornadoes, fires, explosions or large-scale accidents or power outages, or IT threats, could severely disrupt ArTara's operations and have a material adverse effect on its business, financial condition, operating results and prospects. In addition, acts of terrorism and other geo-political unrest could cause disruptions in ArTara's business or the businesses of its partners, manufacturers or the economy as a whole. All of the aforementioned risks may be further increased if ArTara does not implement a disaster recovery plan or its partners' or manufacturers' disaster recovery plans prove to be inadequate. To the extent that any of the above should result in delays in the regulatory approval, manufacture, distribution or commercialization of TARA-002 or IV Choline Chloride, its business, financial condition, operating results and prospects would suffer.

ArTara's business and operations would suffer in the event of system failures, cyber-attacks or a deficiency in its cyber-security.

        Despite the implementation of security measures, ArTara's internal computer systems and those of its current and future CROs and other contractors and consultants are vulnerable to damage from computer viruses, unauthorized access, natural disasters, terrorism, war and telecommunication and electrical failures. 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. While ArTara has not experienced any such material system failure, accident or security breach to date, if such an event were to occur and cause interruptions in ArTara's operations, it could result in a material disruption of its development programs and its business operations. In addition, since ArTara sponsors clinical trials, any breach that compromises patient data and identities causing a breach of privacy could generate significant reputational damage and legal liabilities and costs to recover and repair, including affecting trust in the company to recruit for future clinical trials. For example, the loss of clinical trial data from completed or future clinical trials could result in delays in ArTara's regulatory approval efforts and significantly increase its 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, ArTara's data or applications or inappropriate disclosure of confidential or proprietary information, ArTara could incur liability and the further development and commercialization of its products and product candidates could be delayed.

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Anti-takeover provisions in ArTara's charter documents and under Delaware law could make an acquisition of ArTara more difficult and may prevent attempts by ArTara stockholders to replace or remove ArTara's management.

        Provisions in ArTara's certificate of incorporation and bylaws may delay or prevent an acquisition or a change in management. In addition, because ArTara's is incorporated in Delaware, it is governed by the provisions of Section 203 of the DGCL, which prohibits stockholders owning in excess of 15% of the outstanding ArTara voting stock from merging or combining with ArTara. These provisions may frustrate or prevent any attempts by ArTara's stockholders to replace or remove then current management by making it more difficult for stockholders to replace members of the board of directors, which is responsible for appointing the members of management.

The certificate of incorporation of ArTara provides that the Court of Chancery of the State of Delaware is the exclusive forum for substantially all disputes between ArTara and its stockholders, which could limit its stockholders' ability to obtain a favorable judicial forum for disputes with ArTara or its directors, officers or other employees.

        The certificate of incorporation of ArTara provides that the Court of Chancery of the State of Delaware is the sole and exclusive forum for any derivative action or proceeding brought on ArTara's behalf, any action asserting a breach of fiduciary duty owed by any of its directors, officers or other employees to the ArTara or its stockholders, any action asserting a claim against it arising pursuant to any provisions of the DGCL, its certificate of incorporation or its bylaws, or any action asserting a claim against it that is governed by the internal affairs doctrine. The choice of forum provision may limit a stockholder's ability to bring a claim in a judicial forum that it finds favorable for disputes with ArTara or its directors, officers or other employees, which may discourage such lawsuits against ArTara and its directors, officers and other employees. If a court were to find the choice of forum provision contained in the certificate of incorporation to be inapplicable or unenforceable in an action, ArTara may incur additional costs associated with resolving such action in other jurisdictions.

Certain stockholders have the ability to control or significantly influence certain matters submitted to ArTara's stockholders for approval.

        Certain stockholders have consent rights over certain significant matters of ArTara's business. These include decisions to effect a merger or other similar transaction, changes to the principal business of ArTara, and the sale or other transfer of TARA-002 or other assets with an aggregate value of more than $2,500,000. As a result, these stockholders, have significant influence over certain matters that require approval by ArTara's stockholders.

If equity research analysts do not publish research or reports, or publish unfavorable research or reports, about ArTara, its business or its market, its stock price and trading volume could decline.

        The trading market for ArTara's common stock is influenced by the research and reports that equity research analysts publish about it and its business. Equity research analysts may elect not to provide research coverage of ArTara's common stock after the completion of the Merger, and such lack of research coverage may adversely affect the market price of its common stock. In the event it does have equity research analyst coverage, ArTara will not have any control over the analysts or the content and opinions included in their reports. The price of ArTara's common stock could decline if one or more equity research analysts downgrade its stock or issue other unfavorable commentary or research. If one or more equity research analysts ceases coverage of ArTara or fails to publish reports on it regularly, demand for its common stock could decrease, which in turn could cause its stock price or trading volume to decline.

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If ArTara fails to maintain proper and effective internal controls, its ability to produce accurate financial statements on a timely basis could be impaired.

        ArTara is subject to the reporting requirements of the Exchange Act, the Sarbanes-Oxley Act and the rules and regulations of Nasdaq. The Sarbanes-Oxley Act requires, among other things, that ArTara maintain effective disclosure controls and procedures and internal control over financial reporting. ArTara must perform system and process evaluation and testing of its internal control over financial reporting to allow management to report on the effectiveness of its internal controls over financial reporting in its Annual Report on Form 10-K filing for that year, as required by Section 404 of the Sarbanes-Oxley Act. As a private company, ArTara was not required to test its internal controls within a specified period. This will require that it incur substantial professional fees and internal costs to expand its accounting and finance functions and that it expend significant management efforts. ArTara may experience difficulty in meeting these reporting requirements in a timely manner.

        ArTara may discover weaknesses in its system of internal financial and accounting controls and procedures that could result in a material misstatement of its financial statements. ArTara's internal control over financial reporting will not prevent or detect all errors and all fraud. A control system, no matter how well designed and operated, can provide only reasonable, not absolute, assurance that the control system's objectives will be met. Because of the inherent limitations in all control systems, no evaluation of controls can provide absolute assurance that misstatements due to error or fraud will not occur or that all control issues and instances of fraud will be detected.

        If ArTara is not able to comply with the requirements of Section 404 of the Sarbanes-Oxley Act, or if it is unable to maintain proper and effective internal controls, ArTara may not be able to produce timely and accurate financial statements. If that were to happen, the market price of its common stock could decline and it could be subject to sanctions or investigations by Nasdaq, the SEC or other regulatory authorities.

ArTara may not be able to obtain, maintain or enforce global patent rights or other intellectual property rights that cover its product candidates and technologies that are of sufficient breadth to prevent third parties from competing against ArTara.

        ArTara's success with respect to its product candidates will depend, in part, on its ability to obtain and maintain patent protection in both the United States and other countries, to preserve its trade secrets and to prevent third parties from infringing on its proprietary rights. ArTara's ability to protect its product candidates from unauthorized or infringing use by third parties depends in substantial part on its ability to obtain and maintain valid and enforceable patents around the world.

        The patent application process, also known as patent prosecution, is expensive and time-consuming, and ArTara and its current or future licensors and licensees may not be able to prepare, file and prosecute all necessary or desirable patent applications at a reasonable cost or in a timely manner in all the countries that are desirable. It is also possible that ArTara or its current licensors, or any future licensors or licensees, will fail to identify patentable aspects of inventions made in the course of development and commercialization activities before it is too late to obtain patent protection on them. Therefore, these and any of ArTara's patents and applications may not be prosecuted and enforced in a manner consistent with the best interests of its business. Moreover, ArTara's competitors independently may develop equivalent knowledge, methods and know-how or discover workarounds to ArTara patents that would not constitute infringement. Any of these outcomes could impair ArTara's ability to enforce the exclusivity of its patents effectively, which may have an adverse impact on its business, financial condition and operating results.

        Due to legal standards relating to patentability, validity, enforceability and claim scope of patents covering pharmaceutical inventions, ArTara's ability to obtain, maintain and enforce patents is uncertain and involves complex legal and factual questions especially across countries. Accordingly, rights under

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any existing patents or any patents ArTara might obtain or license may not cover its product candidates or may not provide ArTara with sufficient protection for its product candidates to afford a sustainable commercial advantage against competitive products or processes, including those from branded, generic and over-the-counter pharmaceutical companies. In addition, ArTara cannot guarantee that any patents or other intellectual property rights will issue from any pending or future patent or other similar applications owned by or licensed to ArTara. Even if patents or other intellectual property rights have issued or will issue, ArTara cannot guarantee that the claims of these patents and other rights are or will be held valid or enforceable by the courts, through injunction or otherwise, or will provide ArTara with any significant protection against competitive products or otherwise be commercially valuable to ArTara in every country of commercial significance that ArTara may target.

        Competitors in the field of immunology and oncology therapeutics have created a substantial amount of our common stock,prior art, including resalescientific publications, posters, presentations, patents and patent applications and other public disclosures including on the Internet. ArTara's ability to obtain and maintain valid and enforceable patents depends on whether the differences between its technology and the prior art allow its technology to be patentable over the prior art. ArTara does not have outstanding issued patents covering all of the shares of common stock issuable upon the conversionrecent developments in its technology and is unsure of the Series A Preferred Stock acquiredpatent protection that it will be successful in obtaining, if any. Even if the patents do successfully issue, third parties may design around or challenge the validity, enforceability or scope of such issued patents or any other issued patents ArTara owns or licenses, which may result in such patents being narrowed, invalidated or held unenforceable. If the breadth or strength of protection provided by the patents ArTara holds or pursues with respect to its product candidates is challenged, it could dissuade companies from collaborating with ArTara to develop or threaten its ability to commercialize or finance its product candidates.

        The laws of some foreign jurisdictions do not provide intellectual property rights to the same extent or duration as in the Transaction,United States, and many companies have encountered significant difficulties in acquiring, maintaining, protecting, defending and especially enforcing such rights in foreign jurisdictions. If ArTara encounters such difficulties in protecting or are otherwise precluded from effectively protecting its intellectual property in foreign jurisdictions, its business prospects could be substantially harmed, especially internationally.

        Proprietary trade secrets and unpatented know-how are also very important to ArTara's business. Although ArTara has taken steps to protect its trade secrets and unpatented know-how by entering into confidentiality agreements with third parties, and intellectual property protection agreements with officers, directors, employees, and certain consultants and advisors, there can be no assurance that binding agreements will not be breached or enforced by courts, that ArTara would have adequate remedies for any breach, including injunctive and other equitable relief, or that its trade secrets and unpatented know-how will not otherwise become known, inadvertently disclosed by ArTara or its agents and representatives, or be independently discovered by its competitors. If trade secrets are independently discovered, ArTara would not be able to prevent their use and if ArTara and its agents or representatives inadvertently disclose trade secrets and/or unpatented know-how, ArTara may not be allowed to retrieve this and maintain the exclusivity it previously enjoyed.

ArTara may not be able to protect its intellectual property rights throughout the world.

        Filing, prosecuting and defending patents on ArTara's product candidates does not guarantee exclusivity. The requirements for patentability differ in certain countries, particularly developing countries. In addition, the laws of some foreign countries do not protect intellectual property rights to the same extent as laws in the publicUnited States, especially when it comes to granting use and other kinds of patents and what kind of enforcement rights will be allowed, especially injunctive relief in a civil infringement proceeding. Consequently, ArTara may not be able to prevent third parties from practicing its inventions in all countries outside the United States and even in launching an identical version of

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ArTara's product notwithstanding ArTara has a valid patent in that country. Competitors may use ArTara's technologies in jurisdictions where it has not obtained patent protection to develop their own products, or produce copy products, and, further, may export otherwise infringing products to territories where ArTara has patent protection but enforcement on infringing activities is inadequate or where ArTara has no patents. These products may compete with ArTara's products, and ArTara's patents or other intellectual property rights may not be effective or sufficient to prevent them from competing.

        Many companies have encountered significant problems in protecting and defending intellectual property rights in foreign jurisdictions. The legal systems of certain countries, particularly certain developing countries, do not favor the enforcement of patents and other intellectual property protection, particularly those relating to pharmaceuticals, and the judicial and government systems are often corrupt, which could make it difficult for ArTara to stop the infringement of its patents or marketing of competing products in violation of its proprietary rights generally. Proceedings to enforce its patent rights in foreign jurisdictions could result in substantial costs and divert its efforts and attention from other aspects of its business, could put its global patents at risk of being invalidated or interpreted narrowly and its global patent applications at risk of not issuing, and could provoke third parties to assert claims against it. ArTara may not prevail in any lawsuits that ArTara initiates or infringement actions brought against ArTara, and the damages or other remedies awarded, if any, may not be commercially meaningful when ArTara is the plaintiff. When ArTara is the defendant it may be required to post large bonds to stay in the market while it defends itself from an infringement action.

        In addition, certain countries in Europe and certain developing countries have compulsory licensing laws under which a patent owner may be compelled to grant licenses to third parties, especially if the patent owner does not enforce or use its patents over a protracted period of time. In some cases, the courts will force compulsory licenses on the patent holder even when finding the patent holder's patents are valid if the court believes it is in the best interests of the country to have widespread access to an essential product covered by the patent. In these situations, the royalty the court requires to be paid by the license holder receiving the compulsory license is not calculated at fair market value and can be inconsequential, thereby disaffecting the patentholder's business. In these countries, ArTara may have limited remedies if its patents are infringed or if ArTara is compelled to grant a license to its patents to a third party, which could also materially diminish the value of those patents. This would limit its potential revenue opportunities. Accordingly, ArTara's efforts to enforce its intellectual property rights around the world may be inadequate to obtain a significant commercial advantage from the intellectual property that ArTara owns or licenses, especially in comparison to what it enjoys from enforcing its intellectual property rights in the Unites States. Finally, the company's ability to protect and enforce its intellectual property rights may be adversely affected by unforeseen changes in both U.S. and foreign intellectual property laws, or changes to the policies in various government agencies in these countries, including but not limited to the patent office issuing patents and the health agency issuing pharmaceutical product approvals For example, in Brazil, pharmaceutical patents require initial approval of the Brazilian health agency (ANVISA). Finally, many countries have large backlogs in patent prosecution, and in some countries in Latin America it can take years, even decades, just to get a pharmaceutical patent application reviewed notwithstanding the merits of the application.

Obtaining and maintaining ArTara's patent protection depends on compliance with various procedural, document submission, fee payment, and other requirements imposed by governmental patent agencies, and its patent protection could be reduced or eliminated for non-compliance with these requirements.

        Periodic maintenance and annuity fees on any issued patent are due to be paid to the USPTO and foreign patent agencies in several stages over the lifetime of the patent. The USPTO and various foreign governmental patent agencies require compliance with a number of procedural, documentary,

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fee payment and other similar provisions during the patent application process. While an inadvertent lapse can, in many cases, be cured by payment of a late fee or by other means in accordance with the applicable rules, there are situations in which noncompliance can result in abandonment or lapse of the patent or patent application, resulting in partial or complete loss of patent rights in the relevant jurisdiction just for failure to know about and/or timely pay a prosecution fee. Non-compliance events that could result in abandonment or lapse of a patent or patent application include failure to respond to official actions within prescribed time limits, non-payment of fees in prescribed time periods, and failure to properly legalize and submit formal documents in the format and style the country requires. If ArTara or its licensors fail to maintain the patents and patent applications covering its product candidates for any reason, the Company's competitors might be able to enter the market, which would have an adverse effect on ArTara's business.

If ArTara fails to comply with its obligations under its intellectual property license agreements, it could lose license rights that are important to its business. Additionally, these agreements may be subject to disagreement over contract interpretation, which could narrow the scope of its rights to the relevant intellectual property or technology or increase its financial or other obligations to its licensors.

        ArTara has entered into in-license arrangements with respect to certain of its product candidates. These license agreements impose various diligence, milestone, royalty, insurance and other obligations on ArTara. If ArTara fails to comply with these obligations, the respective licensors may have the right to terminate the license, in which event ArTara may not be able to develop or market the affected product candidate. The loss of such rights could materially adversely affect its business, financial condition, operating results and prospects. For more information about these license arrangements, see "Description of ArTara's Business—Collaborations and License Agreements."

If ArTara is sued for infringing intellectual property rights of third parties, such litigation could be costly and time consuming and could prevent or delay it from developing or commercializing its product candidates.

        ArTara's commercial success depends on its ability to develop, manufacture, market and sell its product candidates and use its proprietary technologies without infringing the proprietary rights of third parties. ArTara cannot assure that marketing and selling such candidates and using such technologies will not infringe existing or future patents. Numerous U.S.- and foreign-issued patents and pending patent applications owned by third parties exist in the fields relating to its product candidates. As the biotechnology and pharmaceutical industries expand and more patents are issued, the risk increases that others may assert that its product candidates, technologies or methods of delivery or use infringe their patent rights. Moreover, it is not always clear to industry participants, including us, which patents and other intellectual property rights cover various drugs, biologics, drug delivery systems or their methods of use, and which of these patents may be valid and enforceable. Thus, because of the large number of patents issued and patent applications filed in ArTara's fields across many countries, there may be a risk that third parties may allege they have patent rights encompassing ArTara's product candidates, technologies or methods.

        In addition, there may be issued patents of third parties that are infringed or are alleged to be infringed by ArTara's product candidates or proprietary technologies notwithstanding patents ArTara may possess. Because some patent applications in the United States may be maintained in secrecy until the patents are issued, because patent applications in the United States and many foreign jurisdictions are typically not published until 18 months after filing and because publications in the scientific literature often lag behind actual discoveries, ArTara cannot be certain that others have not filed patent applications for technology covered by its own and in-licensed issued patents or its pending applications. ArTara's competitors may have filed, and may in the future file, patent applications covering ArTara's own product candidates or technology similar to ArTara's technology. Any such patent application may have priority over ArTara's own and in-licensed patent applications or patents,

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which could further require ArTara to obtain rights to issued patents covering such technologies, which may mean paying significant licensing fees or the like. If another party has filed a U.S. patent application on inventions similar to those owned or in-licensed to us, ArTara or, in the case of in-licensed technology, the licensor may have to participate, in the United States, in an interference proceeding to determine priority of invention.

        ArTara may be exposed to, or threatened with, future litigation by third parties having patent or other intellectual property rights alleging that its product candidates or proprietary technologies infringe such third parties' intellectual property rights, including litigation resulting from filing under Paragraph IV of the Hatch-Waxman Act or other countries' laws similar to the Hatch-Waxman Act. These lawsuits could claim that there are existing patent rights for such drug, and this offeringtype of litigation can be costly and could adversely affect its operating results and divert the prevailing market priceattention of our common stockmanagerial and cause stockholderstechnical personnel, even if ArTara does not infringe such patents or the patents asserted against ArTara is ultimately established as invalid. There is a risk that a court would decide that ArTara is infringing the third party's patents and would order ArTara to experience dilution.stop the activities covered by the patents. In addition, there is a risk that a court will order ArTara to pay the other party significant damages for having violated the other party's patents.

        Because ArTara relies on certain third-party licensors and partners and will continue to do so in the future, if one of its licensors or partners is sued for infringing a third party's intellectual property rights, ArTara's business, financial condition, operating results and prospects could suffer in the same manner as if ArTara were sued directly. In addition to facing litigation risks, ArTara has agreed to indemnify certain third-party licensors and partners against claims of infringement caused by ArTara's proprietary technologies, and ArTara has entered or may enter into cost-sharing agreements with some its licensors and partners that could require ArTara to pay some of the costs of patent litigation brought against those third parties whether or not the alleged infringement is caused by its proprietary technologies. In certain instances, these cost-sharing agreements could also require ArTara to assume greater responsibility for infringement damages than would be assumed just on the basis of its technology.

        The occurrence of any of the foregoing could adversely affect ArTara's business, financial condition or operating results.

We have outstanding an aggregate of 17,619,418 shares of our common stock as of August 2, 2017. We have received stockholder approval for the Transaction and, therefore, the outstanding shares of Series A Preferred Stock are convertible into our common stock at each Investor’s election,ArTara may be subject to claims that its officers, directors, employees, consultants or independent contractors have wrongfully used or disclosed to ArTara alleged trade secrets of their former employers or their former or current customers.

        As is common in the Blocker. The Series A Preferred Stock is convertible into an aggregatebiotechnology and pharmaceutical industries, certain of 22,112,775 sharesArTara's employees were formerly employed by other biotechnology or pharmaceutical companies, including its competitors or potential competitors. Moreover, ArTara engages the services of common stock,consultants to assist ArTara in the development of ArTara's products and product candidates, many of whom were previously employed at, or may have previously been or are currently providing consulting services to, other biotechnology or pharmaceutical companies, including its competitors or potential competitors. ArTara may be subject to adjustment as providedclaims that these employees and consultants or ArTara has inadvertently or otherwise used or disclosed trade secrets or other proprietary information of their former employers or their former or current customers. Although ArTara has no knowledge of any such claims being alleged to date, if such claims were to arise, litigation may be necessary to defend against any such claims. Even if ArTara is successful in defending against any such claims, any such litigation could be protracted, expensive, a distraction to its management team, not viewed favorably by investors and other third parties, and may potentially result in an unfavorable outcome.

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USE OF PROCEEDS

        We will not receive any of the Certificate of Designation. Pursuant toproceeds from the registration rights granted in the Transaction, we agreed to register the resale by the selling stockholders named herein of these shares of common stock. Upon such registration, these shares will become generally available for immediate resale, subject to the Blocker. Sales of substantial amountssale or other disposition of shares of our common stock held by the selling stockholders pursuant to this prospectus.

        We will bear the out-of-pocket costs, expenses and fees incurred in connection with the public market, or the perception that such sales might occur, could adversely affect the market priceregistration of shares of our common stock andto be sold by the market valueselling stockholders pursuant to this prospectus. Other than registration expenses, the selling stockholders will bear underwriting discounts, commissions, placement agent fees or other similar expenses payable with respect to sales of shares of our other securities, and could result in substantial dilution to shareholders who held our common stock prior tostock.

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SELLING STOCKHOLDERS

        We are registering the Transaction. In addition, we may issue additionalresale of 5,776,244 shares of common stock, including shares of our common stock that are issuable upon conversion of our Series 1 convertible non-voting preferred stock, held by the selling stockholders identified below, to permit each of them, or their permitted transferees or other equitysuccessors-in-interest that may be identified in a supplement to this prospectus or, debt securities convertible into common stockif required, a post-effective amendment to the registration statement of which this prospectus is a part, to resell or otherwise dispose of these shares in connection with a future financing, acquisition, litigation settlement, employeethe manner contemplated under the section entitled "Plan of Distribution" in this prospectus (as may be supplemented and amended).

        The selling stockholders may sell some, all or none of their shares. We do not know how long the selling stockholders will hold the shares before selling them, and we currently have no agreements, arrangements or otherwise. Any such issuance couldunderstandings with the selling stockholders regarding the sale or other disposition of any of the shares. The shares covered hereby may be offered from time to time by the selling stockholders. As a result, in substantial dilution to our existing stockholders and could cause our stock price to decline.

A substantialwe cannot estimate the number of shares of common stock are being offered byeach of the selling stockholders will beneficially own after termination of sales under this prospectus, and we cannot predict if and when the purchasers may sell such shares in the public markets.prospectus. In addition, certain holderseach of our common sharesthe selling stockholders may have additional rights, subject to some conditions, to require us to file registration statements covering the salesold, transferred or otherwise disposed of their sharesall or to include their shares in registration statements that we may file for ourselves or other stockholders. We have also registered the offer and salea portion of allits shares of common stock that we may issue under our equity compensation plans. Furthermore, insince the future, we may issue additional sharesdate on which it provided information for this table.

        We filed a Certificate of commonDesignation of Preferences, Rights and Limitations of Series 1 Convertible Non-Voting Preferred Stock with the Delaware Secretary of State on January 9, 2020. Thereunder, each share of Series 1 convertible non-voting preferred stock or other equity or debt securitieswill be convertible into common stock in connection with a financing, acquisition, litigation settlement, employee arrangements or otherwise. Any such issuance could result in substantial dilution to our existing stockholders and could cause our stock price to decline.

Our share price may be volatile, which could subject us to securities class action litigation and our stockholders could incur substantial losses.

The market price of shares of our common stock could be subject to wide fluctuations in response to many risk factors listed in this section, and others beyond our control, including:

These and other market and industry factors may cause the market price and demand for our common stock to fluctuate substantially, regardless of our actual operating performance, which may limit or prevent investors from readily selling their shares of common stock and may otherwise negatively affect the liquidity of our common stock. In addition, the stock market in general, and NASDAQ and emerging growth companies in particular, have experienced extreme price and volume fluctuations that have often been unrelated or disproportionate to the operating performance of these companies. In the past, when the market price of a stock has been volatile, holders of that stock have instituted securities class action litigation against the company that issued the stock. If in the future any of our stockholders brought a lawsuit against us, we could incur significant legal expenses, settlement costs or damage awards that are not covered by, or exceed the limits of, our available directors’ and officers’ liability insurance, which could adversely impact our financial condition, results of operations or cash flows. Such a lawsuit could also divert the time and attention of our management.

CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS

This prospectus and each prospectus supplement, including the documents that we incorporate by reference, contains or may contain forward-looking statements as that term is defined in the federal securities laws. The events described in forward-looking statements contained in this prospectus, including the documents that we incorporate by reference, may not occur. Generally, these statements relate to our business plans or strategies, projected or anticipated benefits or other consequences of our plans or strategies, financing plans, projected or anticipated benefits from acquisitions that we may make, or projections involving anticipated revenues, earnings or other aspects of our operating results or financial position, and the outcome of any contingencies. Any such forward-looking statements are based on current expectations, estimates and projections of management. We intend for these forward-looking statements to be covered by the safe-harbor provisions for forward-looking statements. Words such as “may,” “expect,” “believe,” “anticipate,” “project,” “plan,” “intend,” “estimate,” and “continue,” and their opposites and similar expressions are intended to identify forward-looking statements. We caution you that these statements are not guarantees of future performance or events and are subject to a number of uncertainties, risks and other influences.

These forward-looking statements are subject to a number of risks, uncertainties and assumptions, including, but not limited to:

You should also consider carefully the statements set forth in the section titled “Risk Factors” or elsewhere in this prospectus and the documents incorporated or deemed incorporated herein by reference, including but not limited to the risks described in under “Risk Factors” and elsewhere in our most recent Annual Report on Form 10-K and in our updates to those risk factors in our Quarterly Reports on Form 10-Q and Current Reports on Form 8-K and other factors described elsewhere in this prospectus. Any one or more of these uncertainties, risks and other influences could materially affect our results of operations and whether forward-looking statements made by us ultimately prove to be accurate. Our actual results, performance and achievements could differ materially from those expressed or implied in these forward-looking statements. Except as otherwise required by law, we undertake no obligation to publicly update or revise any forward-looking statements, whether from new information, future events or otherwise.

USE OF PROCEEDS

We will not receive any proceeds from the sale of our common stock by the selling stockholders.

The selling stockholders will pay any underwriting discounts and commissions and any similar expenses it incurs in disposing of the common stock. We will bear all other reasonable costs, fees and expenses incurred in effecting the registration of the common stock covered by this prospectus, including all registration and filing fees, fees and expenses of compliance with securities or “blue sky” laws, listing application fees, printing expenses, transfer agent’s and registrar’s fees, costs of distributing prospectuses in preliminary and final form as well as any supplements thereto, and fees and disbursements of counsel for the Company and all independent certified public accountants and other persons retained by the Company.

SELLING STOCKHOLDERS

As described in the prospectus summary, in the Transaction, the selling stockholders acquired shares of our Series A Preferred Stock that are convertible into1,000 shares of our common stock subject to adjustment for any stock splits, stock dividends and similar events, at any time at the limitations described below. In connection with the closingoption of the Transaction, we entered into the Registration Rights Agreement, pursuant to which we agreed to prepare and file one or more registration statements covering the resale of the shares of common stock issuable upon the conversion of the Series A Preferred Stock acquired in the Transaction (without regard to the limitation described below), and to maintain the effectiveness of such registration statement(s) until all the shares of common stock have been sold in accordance with the Registration Statement or in accordance with Rule 144 under the Securities Act or may be sold by the selling stockholder without volume or manner-of-sale restrictions, and without compliance with any “current public information” requirement, pursuant to Rule 144 under the Securities Act. We are filing this registration statement to comply with our requirements under the Registration Rights Agreement.

Under the terms of the Series A Preferred Stock,holder, provided that any conversion of Series A Preferred Stock1 convertible non-voting preferred stock by a holder into shares of our common stock willwould be prohibited to the extent that,if, as a result of such conversion, the holder, together with its affiliates and any other person or entity whose beneficial ownership of the common stock would be aggregated with such holder’sholder's for purposes of Section 13(d) of the Securities and Exchange Act of 1934, as amended, would beneficially own more than 9.985%4.99% of the total number of shares of our common stock issued and outstanding after giving effect to such conversion (the “Blocker”). The Blockerconversion. Upon written notice to the Company, the holder may not be waived and shall apply to any successor holder of shares of Series A Preferred Stock. The table below does not reflect such limitation, with the effect that beneficial ownership of the selling stockholders is calculated and presented (for purposes of disclosure in this prospectus only) on a fully as converted basis. This table is based upon information supplied by the selling stockholders.

The following table sets forth information as of August 2, 2017, and includes the shares of our common stock beneficially owned by each of the selling stockholders (as well as certain shares of Common Stock that, as a result of the Blocker, the selling stockholders may not currently have the right to acquire), the shares of common stock being registered for sale and offered for sale by each of the selling stockholders, and the shares of common stock that will be beneficially owned by each of the selling stockholders upon sale of the shares registered for resale, assuming that such selling stockholder sells all shares of common stock potentially issuable upon conversion of the Series A Preferred Stock acquired by such selling stockholder in the Transaction. The percentage of shares owned in the table below is based on 39,732,193 shares of common stock outstanding, which includes 17,619,418 shares of common stock outstanding as of August 2, 2017 and assumes the sale of 22,112,775 shares of common stock potentially issuable upon conversion of the Series A Preferred Stock as of the date of this prospectus. Only those selling stockholders listed below or their transferees, pledgees, donees, assignees, distributees or successors in interest may offer and sell the common stock pursuant to this prospectus and any accompanying prospectus supplement. The selling stockholders may offer all or less than all of the shares listed in the table below for sale pursuant to this prospectus and any accompanying prospectus supplement from time to time. Accordingly, no estimate can be given astime increase or decrease such limitation to the sharesany other percentage not in excess of common stock that the selling stockholders will hold upon consummation of any19.99% specified in such sales.notice.

        Beneficial ownership is determined in accordance with the rules of the SEC and includes voting or investment power with respect to our common stock. Generally, a person "beneficially owns" shares of our common stock if the person has or shares with others the right to vote those shares or to dispose of them, or if the person has the right to acquire voting or disposition rights within 60 days.

        The information in the table below and the footnotes thereto regarding shares of common stock to be beneficially owned after the offering assumes the sale of all shares being offered by the selling stockholders under this prospectus. The percentage of shares owned prior to and after the offering is based on 5,843,203 shares of common stock outstanding as of January 30, 2020. Unless otherwise

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indicated, the address for the persons and entities listed in the table below is c/o ArTara Therapeutics, Inc., 1 Little West 12^th Street, New York, NY 10014.

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Relationship with Selling Stockholders

        As discussed in greater detail above under the section "Prospectus Summary—Private Placement," on September 23, 2019, we entered into the Subscription Agreement with the selling stockholders, as amended by reference ina First Amendment to Subscription Agreement on November 19, 2019, pursuant to which, on January 9, 2020, we sold shares of common stock and shares of Series 1 convertible non-voting preferred stock to the selling stockholders and agreed with the selling stockholders to file a registration statement to enable the resale of the shares of common stock covered by this prospectus. Other than Richard Levy, M.D., who is a member of our Board of Directors, none of the selling stockholders or any persons having control over such selling stockholders has held any position or office with us or our affiliates within the last three years or has had a material relationship with us or any of our predecessors or affiliates within the past three years, other than as a result of the ownership of our shares or other securities.

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PLAN OF DISTRIBUTION

 EachWe are registering the shares of common stock issued to the selling stockholderstockholders to permit the resale of these shares of common stock by the holders of the securities named herein and anyshares of their transferees, pledgees, donees, assignees, distributees or successors in interest (all of which may be selling stockholders) may,common stock from time to time after the date of this prospectus. We will not receive any of the proceeds from the sale by the selling stockholders of the shares of common stock. We will bear all fees and expenses incident to our obligation to register the shares of common stock.

        The selling stockholders may sell anyall or alla portion of their securities coveredthe shares of common stock beneficially owned by them and offered hereby from time to time directly or through one or more underwriters, broker-dealers or agents. If the shares of common stock are sold through underwriters or broker-dealers, the selling stockholders will be responsible for underwriting discounts or commissions or agent's commissions. The shares of common stock may be sold on any stocknational securities exchange market or trading facilityquotation service on which the securities are traded,may be listed or quoted at the time of sale, in privatethe over-the-counter market or in transactions otherwise than on these exchanges or otherwise.systems or in the over-the-counter market and in one or more transactions at fixed prices, at prevailing market prices at the time of the sale, at varying prices determined at the time of sale, or at negotiated prices. These sales may be at fixedeffected in transactions, which may involve crosses or negotiated prices or at market prices prevailing at the time of sale. Ablock transactions. The selling stockholderstockholders may use any one or more of the following methods when selling securities:shares:

•

ordinary brokerage transactions and transactions in which the broker-dealer solicits purchasers;



•

block trades in which the broker-dealer will attempt to sell the shares as agent but may position and resell a portion of the block as principal to facilitate the transaction;



•

purchases by a broker-dealer as principal and resale by the broker-dealer for its account;



•

an exchange distribution in accordance with the rules of the applicable exchange;



•

privately negotiated transactions;



•

settlement of short sales entered into after the effective date of the registration statement of which this prospectus is a part;



•

broker-dealers may agree with the selling stockholders to sell a specified number of such shares at a stipulated price per share;



•

through the writing or settlement of options or other hedging transactions, whether such options are listed on an options exchange or otherwise;



•

a combination of any such methods of sale; and



•

any other method permitted pursuant to applicable law.

The selling stockholders also may also sell securities underresell all or a portion of the shares in open market transactions in reliance upon Rule 144 under the Securities Act, as permitted by that rule, or any other exemption from registrationSection 4(1) under the Securities Act, if available, rather than under this prospectus.prospectus, provided that they meet the criteria and conform to the requirements of those provisions.

Broker-dealers engaged by the selling stockholders may arrange for other brokers-dealersbroker-dealers to participate in sales. Broker-dealersIf the selling stockholders effect such transactions by selling shares of common stock to or through underwriters, broker-dealers or agents, such underwriters, broker-dealers or agents may receive commissions in the form of discounts, concessions or discountscommissions from the selling stockholders (or, if any broker-dealer actsor commissions from purchasers of the shares of common stock for whom they may act as agent for the purchaser of securities, from the purchaser)or to whom they may sell as principal. Such commissions will be in amounts to be negotiated, but, except as set forth in a supplement to this Prospectus,prospectus, in the case of an agency transaction will not be in excess of a customary brokerage commission in compliance with FINRA Rule 2440; and in the case5110.

Table of a principal transaction a markup or markdown in compliance with FINRA IM-2440.Contents

In connection with the salesales of the securitiesshares of common stock or interests therein,otherwise, the selling stockholders may enter into hedging transactions with broker-dealers or other financial institutions, which may in turn engage in short sales of the securitiesshares of common stock in the course of hedging thein positions they assume. The selling stockholders may also sell securitiesshares of common stock short and if such short sale shall take place after the date that this registration statement is declared effective by the SEC, the selling stockholders may deliver these securitiesshares of common stock covered by this prospectus to close out their short positions orand to return borrowed shares in connection with such short sales. The selling stockholders may also loan or pledge the securitiesshares of common stock to broker-dealers that in turn may sell these securities.such shares, to the extent permitted by applicable law. The selling stockholders may also enter into option or other transactions with broker-dealers or other financial institutions or createthe creation of one or more derivative securities which require the delivery to such broker-dealer or other financial institution of securitiesshares offered by this prospectus, which securitiesshares such broker-dealer or other financial institution may resell pursuant to this prospectus (as supplemented or amended to reflect such transaction). Notwithstanding the foregoing, the selling stockholders have been advised that they may not use shares registered on this registration statement to cover short sales of our common stock made prior to the date the registration statement, of which this prospectus forms a part, has been declared effective by the SEC.

The selling stockholders may, from time to time, pledge or grant a security interest in some ofor all of the shares of common stock owned by them and, if any of them defaultsthey default in the performance of itstheir secured obligations, the pledgees or secured parties may offer and sell the shares of common stock from time to time pursuant to this prospectus or any supplement or amendment to this prospectus under Rule 424(b)(3) or other applicable provision of the Securities Act of 1933, as amended, amending, if necessary, the list of selling stockholders to include the pledgee, transferee or other successors in interest as selling stockholders under this prospectus. The selling stockholders also may transfer and donate the shares of common stock in other circumstances in which case the transferees, donees, pledgees or other successors in interest will be the selling beneficial owners for purposes of this prospectus.

The selling stockholders and any broker-dealersbroker-dealer or agents that are involvedparticipating in selling the securitiesdistribution of the shares of common stock may be deemed to be “underwriters”"underwriters" within the meaning of Section 2(11) of the Securities Act in connection with such sales. In such event, any commissions received bypaid, or any discounts or concessions allowed to, any such broker-dealersbroker-dealer or agentsagent and any profit on the resale of the securitiesshares purchased by them may be deemed to be underwriting commissions or discounts under the Securities Act. WeSelling stockholders who are "underwriters" within the meaning of Section 2(11) of the Securities Act will be subject to the prospectus delivery requirements of the Securities Act and may be subject to certain statutory liabilities of, including but not aware that anylimited to, Sections 11, 12 and 17 of the Securities Act and Rule 10b-5 under the Exchange Act.

        Each selling stockholder has informed the Company that it is not a registered broker-dealer and does not have any written or oral agreement or understanding, directly or indirectly, with any person to distribute the securities.

We are requiredcommon stock. Upon the Company being notified in writing by a selling stockholder that any material arrangement has been entered into with a broker-dealer for the sale of common stock through a block trade, special offering, exchange distribution or secondary distribution or a purchase by a broker or dealer, a supplement to pay certain fees and expenses incurred by us incident to the registration of the securities. We have agreed to indemnify the selling stockholders against certain losses, claims, damages and liabilities, including liabilities under the Securities Act.

We agreed to keep this prospectus effective until the earlier of (i) the date on which the securities maywill be resold by the selling stockholders without registration or restriction (including any volume or manner-of-sale limitationsfiled, if required, pursuant to Rule 144), without the requirement for us to be in compliance with the current public information requirement under Rule 144424(b) under the Securities Act, or any other ruledisclosing (i) the name of similar effect or (ii) alleach such selling stockholder and of the securities have beenparticipating broker-dealer(s), (ii) the number of shares involved, (iii) the price at which such the shares of common stock were sold, pursuant(iv) the commissions paid or discounts or concessions allowed to such broker-dealer(s), where applicable, (v) that such broker-dealer(s) did not conduct any investigation to verify the information set out or incorporated by reference in this prospectus, or Rule 144 underand (vi) other facts material to the Securities Act or any other ruletransaction.

        Under the securities laws of similar effect. The resale securities willsome states, the shares of common stock may be sold in such states only through registered or licensed brokers or dealers if required under applicabledealers. In addition, in some states the shares of

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common stock may not be sold unless such shares have been registered or qualified for sale in such state securities laws.or an exemption from registration or qualification is available and is complied with.

Under applicable rules and regulations under the Exchange Act,There can be no assurance that any person engaged in the distributionselling stockholder will sell any or all of the shares of common stock may not simultaneously engage in market making activities with respectregistered pursuant to the common stock for the applicable restricted period, as definedshelf registration statement, of which this prospectus forms a part.

        Each selling stockholder and any other person participating in Regulation M, prior to the commencement of the distribution. In addition, the selling stockholderssuch distribution will be subject to applicable provisions of the Exchange Act and the rules and regulations thereunder, including, without limitation, Regulation M of the Exchange Act, which may limit the timing of purchases and sales of any of the shares of common stock by the selling stockholders orstockholder and any other participating person. Regulation M may also restrict the ability of any person engaged in the distribution of the shares of common stock to engage in market-making activities with respect to the shares of common stock. All of the foregoing may affect the marketability of the shares of common stock and the ability of any person or entity to engage in market-making activities with respect to the shares of common stock.

        We will make copiespay all expenses of the registration of the shares of common stock pursuant to the Registration Rights Agreement, including, without limitation, SEC filing fees and expenses of compliance with state securities or "blue sky" laws; provided, however, that each selling stockholder will pay all underwriting discounts and selling commissions, if any, and any legal expenses incurred by it. We will indemnify the selling stockholders against certain liabilities, including some liabilities under the Securities Act, in accordance with the Registration Rights Agreement, or the selling stockholders will be entitled to contribution. We may be indemnified by the selling stockholders against civil liabilities, including liabilities under the Securities Act, that may arise from any written information furnished to us by the selling stockholders specifically for use in this prospectus, availablein accordance with the related Registration Rights Agreement, or we may be entitled to contribution.

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EXPERTS

        The consolidated financial statements of ArTara Therapeutics, Inc. as of December 31, 2018 and 2017 and for the year ended December 31, 2018 and for the period from June 2, 2017 (inception) through December 31, 2017 appearing in the Prospectus filed on a Registration Statement pursuant to Rule 424 (b)(3) of ArTara Therapeutics, Inc. (formerly Proteon Therapeutics, Inc.) on December 19, 2019 and incorporated by reference in this prospectus have been audited by Marcum, LLP, an independent registered public accounting firm, as set forth in their report, thereon (which contains an explanatory paragraph relating to substantial doubt about the ability of ArTara Therapeutics, Inc. to continue as a going concern as described in Note 1 to the selling stockholders.financial statements) appearing elsewhere in this prospectus, and are incorporated by reference in reliance on such report given upon such firm as experts in auditing and accounting.

LEGAL MATTERS

The validityconsolidated financial statements of ArTara Therapeutics, Inc. (formerly Proteon Therapeutics, Inc.) at December 31, 2018 and 2017, and for each of the securities being offered hereby will be passed uponyears then ended, appearing in this Prospectus and Registration Statement have been audited by Morgan, Lewis & Bockius LLP.

EXPERTS

Ernst & Young LLP, independent registered public accounting firm, has audited our consolidated financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2016, as set forth in their report which is incorporated by referencethereon (which contains an explanatory paragraph describing conditions that raise substantial doubt about the Company's ability to continue as a going concern as described in this prospectusNote 1 to the consolidated financial statements) appearing elsewhere herein, and elsewhere in the registration statement. Our financial statements are incorporated by referenceincluded in reliance on Ernst & Young LLP’supon such report given on theirthe authority of such firm as experts in accounting and auditing.

DISCLOSURE OF COMMISSION POSITION

ON INDEMNIFICATION FOR SECURITIES ACT LIABILITIES
LEGAL MATTERS

Section 145Certain legal matters, including the validity of the Delaware General Corporation Law, or DGCL, or Section 145, provides that we may indemnify any person who was or is a party or is threatened to be made a party to any threatened, pending or completed action, suit or proceeding, whether civil, criminal or investigative (other than an action by us or in our right) by reason of the fact that he is or was our director, officer, employee or agent, or is or was serving at our request as a director, officer, employee or agent of another corporation, partnership, joint venture, trust or other enterprise, against expenses (including attorneys’ fees), judgments, fines and amounts paid in settlement actually and reasonably incurred by him or her in connection with such action, suit or proceeding if he acted in good faith and in a manner he or she reasonably believed to be in or not opposed to our best interests, and, with respect to any criminal action or proceeding, had no reasonable cause to believe his or her conduct was unlawful. Section 145 further provides that we similarly may indemnify any such person serving in any such capacity who was or is a party or is threatened to be made a party to any threatened, pending or completed action or suit by is or in our right to procure judgment in our favor, against expenses actually and reasonably incurred in connection with the defense or settlement of such action or suit if he or she acted in good faith and in a manner he reasonably believed to be in or not opposed to our best interests and except that no indemnification shall be made in respect of any claim, issue or matter as to which such person shall have been adjudged to be liable to us unless and only to the extent that the Delaware Court of Chancery or such other court in which such action or suit was brought shall determine upon application that, despite the adjudication of liability but in view of all the circumstances of the case, such person is fairly and reasonably entitled to indemnity for such expenses which the Delaware Court of Chancery or such other court shall deem proper.

Our amended and restated certificate of incorporation and bylaws provide that, to the fullest extent permitted by the DGCL, our directors shall not be liable to us or our stockholders for monetary damages for any breach of fiduciary duty as a director, and that we shall, to the maximum extent permitted under the DGCL, indemnify any person who was or is made a party or is threatened to be made a party to any threatened, pending or completed action, suit, proceeding or claim, whether civil, criminal, administrative or investigative, by reason of the fact that such person is or was or has agreed to be our director or officer or while a director or officer is or was serving at our request as a director, officer, partner, trustee, employee, or agent of any corporation, partnership, joint venture, trust or other enterprise, including service with respect to employee benefit plans, against expenses (including attorney’s fees), judgments, fines, penalties and amounts paid in settlement incurred in connection with the investigation, preparation to defend or defense of such action, suit, proceeding or claim.

Insofar as indemnification for liabilities arising under the Securities Act may be permitted to our directors, officers and controlling persons pursuant to the foregoing provisions, or otherwise, we have been advised that in the opinion of the SEC such indemnification is against public policy as expressed in the Securities Act and is, therefore, unenforceable. In the event that a claim for indemnification against such liabilities (other than the payment by the registrant of expenses incurred or paid by a director, officer or controlling person of the registrant in the successful defense of any action, suit or proceeding) is asserted by such director, officer or controlling person in connection with the securities being registered, we will, unless in the opinion of our counsel the matter has been settled by controlling precedent, submit to a court of appropriate jurisdiction the question whether such indemnification by us is against public policy as expressed in the Securities Act and will be governed by the final adjudication of such issue.

ADDITIONAL INFORMATION

This prospectus is part of a Registration Statement on Form S-3 that we have filed with the SEC relating to the shares of our securities beingcommon stock offered hereby. This prospectus does not contain allpursuant to this registration statement, will be passed upon for us by Cooley LLP, San Diego, California.

WHERE YOU CAN FIND ADDITIONAL INFORMATION

        We must comply with the informational requirements of the information in the Registration StatementExchange Act, and its exhibits. The Registration Statement, its exhibitswe are required to file reports and the documents incorporated by reference in this prospectus and their exhibits, all contain information that is material to the offering of the Securities hereby. Whenever a reference is made in this prospectus to any of our contracts or other documents, the reference may not be complete. You should refer to the exhibits that are a part of the Registration Statement in order to review a copy of the contract or documents. The Registration Statement and the exhibits are available at the SEC’s Public Reference Room or through its Website.

We file annual, quarterly and current reports, proxy statements and other information with the SEC. You canmay read and copy any materials we file with the SEC at its Public Reference Room at 100 F Street, N.E., Washington, D.C. 20549these reports, proxy statements and at its regional offices, a list of which is available on the Internet at http://www.sec.gov/contact/addresses.htm. You may obtainother information on the operation of the Public Reference Room by calling the SEC at 1-800-SEC-0330. The SEC maintains an Internet siteSEC's website at http://www.sec.gov, thatwhich contains reports, proxy and information statements and other information regarding issuers such aslike us that file electronically with the SEC. Additionally, you may access our filings with the SECWe maintain a website at www.artaratx.com. The information contained in, or that can be accessed through, our website at http://www.proteontherapeutics.com. The information on our websiteis not incorporated by reference herein and is not part of this prospectus.

We will provide you without charge, upon your oral or written request, with a copy of any or all reports, proxy statements and other documents we file with the SEC, as well as any or all of the documents incorporated by referenceStatements contained in this prospectus as to the contents of any contract or other document are not necessarily complete, and in each instance we refer you to the copy of the contract or document filed as an exhibit to the registration statement, (other than exhibits toeach such documents unlessstatement being qualified in all respects by such exhibits are specifically incorporated by reference into such documents). Requests for such copies should be directed to:reference.

Investor Relations

Proteon Therapeutics, Inc.

200 West Street

Waltham, Massachusetts 02451

Telephone number: (781) 890-0102

You should rely only on the information in this prospectus and the additional information described above and under the heading “Incorporation of Certain Information by Reference” below. We have not, and the selling stockholders have not, authorized any other person to provide you with different information. If anyone provides you with different or inconsistent information, you should not rely upon it. The selling stockholders are not making an offer to sell these securities in any jurisdiction where the offer or sale is not permitted. You should assume that the information in this prospectus was accurate on the date of the front cover of this prospectus only, and that any information we have incorporated by reference was accurate on the date of the document incorporated by reference only. Our business, financial condition, results of operations and prospects may have changed since such date
.