avtx-20231231

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-K

(Mark One)

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

For the fiscal year ended December 31, 2023

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

For the transition period from ______to______

Commission File No. 001-37590

AVALO THERAPEUTICS, INC.

(Exact name of registrant as specified in its charter)

540 Gaither Road, Suite 400

Rockville, Maryland20850

(Address of principal executive offices)

Telephone: (410) 522-8707

(Registrant’s telephone number, including area code)

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

Title of each class Trading Symbol(s) Name of each exchange on which registered

Common Stock, $0.001 Par Value AVTX Nasdaq Capital Market

Securities registered pursuant to section 12(g) of the Act: None

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

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

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and

(2) has been subject to such filing requirements for the past 90 days. Yes☒ No ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S‐T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes☒ No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule12b-2 of the Exchange Act.

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

Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report. ☐

If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the registrant included in the filing reflect the correction of an error to previously issued financial statements.☐

Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-based compensation received by any of the registrant’s executive officers during the relevant recovery period pursuant to §240.10D-1(b). ☐

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

The aggregate market value of the registrant’s shares of common stock held by non-affiliates of the registrant as of June 30, 2023 (which is the last business day of the registrant's most recently completed second fiscal quarter) based upon the closing market price of such stock on the Nasdaq Capital Market on that date was approximately $4.8 million. Shares of common stock held by each officer and directors and by each person

known to be the registrant who owned 10% or more of the outstanding common stock have been excluded in that such person may be deemed to be affiliates. This determination of affiliate status is not necessarily a conclusive determination for other purposes.

As of March 27, 2024, there were 1,034,130 outstanding shares of the registrant’s common stock, par value $0.001 per share.

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TABLE OF CONTENTS

Page

PART I ii

Item 1. Business 1

Item 1A. Risk Factors 12

Item 1B. Unresolved Staff Comments 44

Item 1C. Cybersecurity 44

Item 2. Properties 45

Item 3. Legal Proceedings 46

Item 4. Mine Safety Disclosures 46

Item 6. Reserved 48

Item 7A. Quantitative and Qualitative Disclosures About Market Risk 57

Item 8. Financial Statements and Supplementary Data 57

Item 9A. Controls and Procedures 57

Item 9B. Other Information 58

Item 9C. Disclosure Regarding Foreign Jurisdictions that Prevent Inspection 58

PART III 59

Item 10. Directors, Executive Officers and Corporate Governance 59

Item 11. Executive Compensation 63

Item 14. Principal Accountant Fees and Services 72

Item 15. Exhibits; Financial Statement Schedules 73

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PART I

SPECIAL NOTE REGARDING FORWARD‐LOOKING STATEMENTS

This report and the information incorporated herein by reference contain forward-looking statements that involve a number of risks and uncertainties, as well as assumptions that, if they never materialize or if they prove incorrect, could cause our results to differ materially from those expressed or implied by such forward-looking statements. Although our forward-looking statements reflect the good faith judgment of our management, these statements can only be based on facts and factors currently known by us. Consequently, forward-looking statements are inherently subject to risks and uncertainties, and actual results and outcomes may differ materially from results and outcomes discussed in the forward-looking statements.

Forward-looking statements can be identified by the use of forward-looking words such as “projects,” “may,” “might,” “will,” “could,” “would,” “should,” “continue,” “seeks,” “aims,” “predicts,” “believes,” “expects,” “anticipates,” “estimates,” “intends,” “plans,” “potential,” “pro forma” or other similar words (including their use in the negative), or by discussions of future matters such as: the future financial and operational outlook; the development of product candidates; and other statements that are not historical. These statements include but are not limited to statements under the captions “Business,” “Risk Factors” and “Management’s Discussion and Analysis of Financial Condition and Results of Operations” as well as other sections in this report. You should be aware that the occurrence of any of the events discussed under the caption “Risk Factors” and elsewhere in this report could substantially harm our business, results of operations and financial condition and cause our results to differ materially from those expressed or implied by our forward-looking statements. If any of these events occurs, the trading price of our common stock and the price or value of our other securities could decline and you could lose all or a part of the value of your investment in our Company.

The cautionary statements made in this report are intended to be applicable to all related forward-looking statements wherever they may appear in this report. We urge you not to place undue reliance on these forward-looking statements, which speak only as of the date of this report. Except as required by law, we assume no obligation to update or revise these forward-looking statements for any reason, even if new information becomes available in the future.

As used in this report, the terms “Avalo,” “Company,” “we,” “us,” and “our” mean Avalo Therapeutics, Inc. and its subsidiaries unless the context indicates otherwise.

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SUMMARY OF PRINCIPAL RISK FACTORS

This summary briefly states the principal risks and uncertainties facing our business that could affect our securities, which are only a select portion of those risks. A more complete statement of those risks and uncertainties is set forth under Part I, Item 1A “Risk Factors” of this annual report. This summary is qualified in its entirety by that more complete statement. You should carefully read the entire “Risk Factors” section when considering the risks and uncertainties as part of your evaluation of our business and your investment in our company.

•We recently acquired AVTX-009, a product candidate with which we have no prior experience and that we intend to make our primary focus in the near-term. We may not be able to successfully develop AVTX-009 and realize the benefits that we believe it offers. Further, our near-term focus on AVTX-009 may negatively impact the planned development of our other product candidates.

•We may encounter difficulties in managing our growth, including the focus on AVTX-009 and resources necessary for its development, and expanding our operations successfully.

•We have incurred significant net losses in most periods since our inception and we expect to continue to incur net losses in the future.

•If clinical trials of our product candidates fail to demonstrate safety and efficacy to the satisfaction of regulatory authorities or do not otherwise produce positive results, we may incur additional costs or experience delays in completing, or ultimately be unable to complete, the development and commercialization of our product candidates.

•Our product candidates that we intend to commercialize are in early to mid-stages of development. If we do not successfully complete nonclinical testing and clinical development of our product candidates or experience significant delays in doing so, our business may be materially harmed. Our near-term focus and reliance on AVTX-009 increases the risk of such exposure.

•We may expend our limited resources to pursue a particular product candidate or indication and fail to capitalize on product candidates or indications that may be more profitable or for which there is a greater likelihood of success. Our near-term focus and reliance on AVTX-009 increases the risk of such exposure.

•The marketing approval processes of the United States Food and Drug Administration (the “FDA”) and comparable foreign regulatory authorities are lengthy, time‐consuming, costly and inherently unpredictable. Our inability to obtain regulatory approval for our product candidates would substantially harm our business.

•We rely on third parties to conduct and monitor our clinical trials. The failure of these third parties to successfully carry out their contractual duties or meet expected deadlines could substantially harm our business because we might not obtain marketing approval for or commercialize our product candidates in a timely manner or at all.

•We use third parties to manufacture all of our product candidates. This may increase the risk that we will not have sufficient quantities of our product candidates to conduct our clinical trials or for commercial production or whether we can acquire such quantities at an acceptable cost, which could result in the delay, prevention, or impairment of clinical development and commercialization of our product candidates.

•We expect to need additional capital in the future for the continued development of our product candidates and for our long-term operations, which might not be available to us on acceptable terms, or at all. Failure to obtain any necessary capital will force us to delay, limit or terminate our product development efforts or cease our operations.

•If we are unable to obtain or maintain intellectual property rights to our product candidates, or if the scope of patent protection is not sufficiently broad, competitors could develop and commercialize products similar or identical to ours, and we might not be able to compete effectively in that market.

•If we breach the license and development agreements related to our product candidates, we could lose the ability to develop and commercialize our product candidates.

•If we fail to attract and keep management and other key personnel, as well as members of our board of directors, we may be unable to develop our product candidates or otherwise implement our business plan.

•The market price of our stock is volatile, and you could lose all or part of your investment.

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PART I

Item 1. Business.

Overview

Avalo Therapeutics, Inc. (the “Company”, “Avalo” or “we”) is a clinical stage biotechnology company focused on the treatment of immune dysregulation. Avalo’s lead asset is AVTX-009, an anti-IL-1β monoclonal antibody (“mAb”), targeting inflammatory diseases. Avalo’s pipeline also includes quisovalimab (anti-LIGHT mAb) and AVTX-008 (BTLA agonist fusion protein).

Avalo was incorporated in Delaware and commenced operation in 2011, and completed its initial public offering in October 2015.

Our Strategy

Our strategy for increasing stockholder value includes:

•Advancing our pipeline of compounds through development to regulatory approval;

•Developing the go-to-market strategy to quickly and effectively market, launch, and distribute each of our compounds that receive regulatory approval;

•Opportunistically out-licensing rights to indications or geographies; and

•Acquiring or in-licensing rights to targeted, complementary differentiated preclincal and clinical stage compounds.

Pipeline — Overview, Competition, and Intellectual Property

AVTX-009:Anti-IL-1β monoclonal antibody (“mAb”) targeting inflammatory diseases.

Overview: AVTX-009 is a humanized monoclonal antibody (IgG4) that binds to interleukin-1β (“IL-1β”) with high affinity and neutralizes its activity. IL-1β is a central driver in the inflammatory process. Overproduction or dysregulation of IL-1β is implicated in many autoimmune and inflammatory diseases. IL-1β is a major, validated target for therapeutic intervention. There is evidence that inhibition of IL-1β could be effective in HS and a variety of inflammatory diseases in dermatology, gastroenterology, and rheumatology.

Competition: As of the date of this report, and to our knowledge, AVTX-009 is one of three anti-IL-1β antibodies in clinical development worldwide. Currently, worldwide there are two drugs approved for hidradenitis suppurativa (“HS”).

License: AVTX-009 is being developed through a world-wide exclusive license from Eli Lilly and Company (“Lilly”) (the “Lilly License Agreement”). Avalo obtained the rights to AVTX-009, including the world-wide exclusive license from Lilly, pursuant to its acquisition of AlmataBio, Inc. (“AlmataBio”) in the first quarter of 2024 (the “Almata Transaction”). AlmataBio had previously purchased the rights, title and interest in the asset from Leap Therapeutics, Inc. (“Leap”) in 2023.

Avalo is required to pay up to $70 million based on the achievement of specified development and regulatory milestones. Upon commercialization, the Company is required to pay sales-based milestones aggregating up to $720 million. Additionally, Avalo

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is required to pay royalties during a country-by-country royalty term equal to a mid-single digit-to-low double digit of Avalo or its sublicensees’ annual net sales.

Pursuant to the Almata Transaction, the Company will make a cash payment of $7.5 million due to the former AlmataBio stockholders upon the initial closing of the private placement investment, which closed on March 28, 2024. Further, a portion of the consideration for the Almata Transaction includes development milestones to the former AlmataBio stockholders including $5 million due upon the first patient dosed in a Phase 2 trial in patients with hidradenitis suppurativa for AVTX-009 and $15 million due upon the first patient dosed in a Phase 3 trial for AVTX-009, both of which are payable in cash or stock of Avalo (or a combination thereof) at the election of the former AlmataBio stockholders.

Avalo is responsible for the development and commercialization of the AVTX-009 program.

Quisovalimab (AVTX-002):Anti-LIGHT mAb targeting immune-inflammatory diseases.

Overview: Quisovalimab is a fully human mAb, directed against human LIGHT (Lymphotoxin-like, exhibits Inducible expression, and competes with HSV Glycoprotein D for Herpesvirus Entry Mediator (“HVEM”), a receptor expressed by T lymphocytes; also referred to as TNFSF14). There is increasing evidence that the dysregulation of the LIGHT-signaling network which includes LIGHT, its receptor HVEM and LTβR and the downstream checkpoint BTLA, is a disease-driving mechanism in autoimmune and inflammatory reactions in barrier organs. Therefore, Avalo believes reducing LIGHT levels can moderate immune dysregulation in many acute and chronic inflammatory disorders.

•Quisovalimab has shown a rapid and sustained reduction of LIGHT levels, as well as a favorable safety and tolerability profile, in all indications studied including COVID-19 acute respiratory distress syndrome (“ARDS”), Crohn’s Disease and non-eosinophilic asthma (“NEA”).

•Quisovalimab was statistically significant in reducing respiratory failure and mortality in patients hospitalized with COVID-19 ARDS. Quisovalimab also demonstrated positive trends in an open-label study of Crohn’s Disease.

•A post-hoc analysis of the Company’s Phase 2 randomized, double-blind placebo-controlled trial in patients with poorly controlled NEA showed a sub-population of NEA patients with baseline LIGHT levels of over 125 pg/mL, which represented over 50% of patients, and had an approximate 50% reduction in asthma-related events for patients treated with quisovalimab compared to placebo.

•Avalo is conducting a strategic review of the quisovalimab program.

Competition: As of the date of this report, and to our knowledge, quisovalimab is the only anti-LIGHT mAb in clinical development in the United States.

License: On March 25, 2021, the Company entered into a license agreement with Kyowa Kirin Co., Ltd. (“KKC”) for exclusive worldwide rights to develop, manufacture and commercialize quisovalimab for all indications (the “KKC License Agreement”). The KKC License Agreement replaced the Amended and Restated Clinical Development and Option Agreement between the Company and KKC dated May 28, 2020.

Under the KKC License Agreement, the Company paid KKC an upfront license fee of $10 million. Avalo is also required to pay KKC up to an aggregate of $112.5 million based on the achievement of specified development and regulatory milestones. Upon commercialization, the Company is required to make milestone payments to KKC aggregating up to $75 million tied to the achievement of annual net sales targets.

Additionally, the Company is required to pay KKC royalties during a country-by-country royalty term equal to a mid-teen percentage of annual net sales. The Company is required to pay KKC a double-digit percentage (less than 30%) of the payments that the Company receives from sublicensing its rights under the KKC License Agreement, subject to certain exclusions. Avalo is responsible for the development and commercialization of quisovalimab in all indications worldwide (other than the option in the KKC License Agreement that, upon exercise by KKC, allows KKC to develop, manufacture and commercialize quisovalimab in Japan). In addition to the KKC License Agreement, Avalo is responsible for making additional royalty payments upon commercialization of up to an amount of less than 10% of net sales.

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Market, Data, and Patent Exclusivity: If we receive marketing approval, we expect to receive biologics data exclusivity in the United States, which would provide twelve years of data exclusivity in the United States from the date of FDA approval. Additionally, patents exclusively licensed from KKC may provide exclusivity in the United States through 2028 absent any extension, and additional patent applications filed by us covering certain methods of using quisovalimab, if issued and properly maintained, should provide additional exclusivity in certain indications through 2043, absent any extension.

AVTX-008: Fully human B and T Lymphocyte Attenuator agonist fusion protein targeting immune dysregulation disorders.

Overview: AVTX-008 is a fully human B and T Lymphocyte Attenuator (“BTLA”) agonist fusion protein.

•AVTX-008 is uniquely positioned as a fusion protein with high-binding affinity and serum stability. AVTX-008 is differentiated by having specific binding to BTLA, with no binding to LIGHT or CD160.

•Avalo is conducting a strategic review of the AVTX-008 program.

Competition: As of the date of this report, and to our knowledge, worldwide there are a total of five BTLA agonist antibodies in clinical development for the treatment of autoimmune diseases.

License: On June 21, 2021, the Company entered into an Exclusive Patent License Agreement with Sanford Burnham Prebys Medical Discovery Institute (the “Sanford Burnham Prebys License Agreement” or the “SBP License Agreement”) under which Avalo obtained an exclusive license to a portfolio of issued patents and patent applications covering AVTX-008.

Under the Sanford Burnham Prebys License Agreement, Avalo paid a mid-six digit upfront license fee and pays mid-five digit annual maintenance fees. Avalo is also required to pay Sanford Burnham Prebys up to approximately $24 million based on the achievement of specified development and regulatory milestones. Upon commercialization, the Company is required to pay Sanford Burnham Prebys sales-based milestones aggregating up to $50 million tied to the achievement of annual net sales targets. Additionally, the Company is required to pay Sanford Burnham Prebys royalties during a country-by-country royalty term equal to a low-to-mid single digit percentage of annual net sales. Avalo is also required to pay Sanford Burnham Prebys a tiered low-double digit percentage of payments that Avalo receives from sublicensing of its rights under the Sanford Burnham Prebys License Agreement, subject to certain exclusions. Avalo is responsible for the development and commercialization of the program.

Market, Data, and Patent Exclusivity: If we receive marketing approval, we expect to receive biologics data exclusivity in the United States, which may provide twelve years of data exclusivity in the United States from the date of FDA approval. Additionally, patents exclusively licensed from Sanford Burnham Prebys may provide exclusivity in the United States through 2036 absent any extension.

Legacy Programs

We are not currently pursuing the development of the following programs and are exploring strategic alternatives:

AVTX-006: AVTX-006 is a dual mTORc1/c2 small molecule inhibitor for the treatment of complex lymphatic malformations.

AVTX-913: AVTX-913 is a nucleotide prodrug for the treatment of a mitochondrial disorder and is a preclinical asset.

Intellectual Property Overview

Our success depends in part on our ability to obtain and maintain proprietary protection for the technology and know-how upon which our product candidates are based, to operate without infringing the proprietary rights of others and to prevent others from infringing our proprietary rights.

We hold ownership, trademark rights and/or exclusivity to develop and commercialize our product candidates covered by patents and patent applications. Our portfolio of patents includes patents or patent applications with claims directed to compositions of matter, including compounds, pharmaceutical formulations, methods of use, methods of manufacturing the compounds, or a combination of these claims. Depending upon the timing, duration and specifics of FDA approval of the use of a compound for a specific indication, some of our U.S. patents may be eligible for a limited patent term extension under the Drug Price Competition and Patent Term Restoration Act of 1984, referred to as the Hatch-Waxman Act. Similar extensions to patent term may be available in other countries for particular patents in our portfolio.

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We plan to augment our portfolio of compounds by focusing on the development (when possible) of new chemical entities (“NCEs”) or biologics, which have not previously received FDA approval. Upon approval by the FDA, NCEs are entitled to market and data exclusivity in the United States with respect to generic drug competition for a period of five years from the date of FDA approval, even if the related patents have expired. Similarly, upon approval by the FDA, biologics are entitled to reference product exclusivity for a period of twelve years from the date of FDA approval, even if the related patents have expired.

Intellectual property for specific pipeline assets, if applicable, are discussed above within the “Pipeline - Overview, Competition and Intellectual Property” section.

Competition Overview

We face, and will continue to face, intense competition from pharmaceutical and biotechnology companies, as well as numerous academic and research institutions and governmental agencies, both in the United States and abroad. We compete, or will compete, with existing and new products being developed by our competitors. Some of these competitors are pursuing the development of pharmaceuticals that target the same diseases and conditions that our research and development programs target or might target. Some of these competitors also have greater resources and more experience than we do in research and development development and marketing.

Competition for specific pipeline assets is discussed above within the “Pipeline Assets” section.

Manufacturing

We do not have any manufacturing facilities. We rely on contract manufacturing organizations to produce our drug candidates in accordance with applicable provisions of the FDA’s and EMA’s current good manufacturing practices (“cGMP”) regulations for use in our clinical studies. The manufacture of pharmaceuticals is subject to extensive cGMP regulations, which impose various procedural and documentation requirements and govern all areas of record keeping, production processes and controls, personnel and quality control.

Sales and Marketing

For our clinical stage assets, we may retain or partner in the United States with third parties on the commercialization rights and develop sales and marketing capabilities, when needed. If we develop our own United States sales force we may complement it with co‐promotion agreements with partners in and outside of the United States. We may also seek to commercialize any of our approved products outside of the United States and may do so either through an expansion of our sales force or through collaboration with third parties.

Overall Competitive Climate and Risks

Competitors may have a variety of drugs in development or awaiting FDA approval that could reach the market and become established before we have an approved product to sell. Our competitors may also develop alternative therapies that could limit the market for any approved drugs that we may develop. Many of our competitors are using technologies or methods different or similar to ours to identify and validate drug targets and to discover novel small compound drugs. Many of our competitors and their collaborators may have significantly greater experience than we do in the following:

•identifying and validating targets;

•screening compounds against targets;

•preclinical and clinical trials of potential pharmaceutical products; and

•obtaining FDA and other regulatory clearances.

In addition, many of our competitors and their collaborators have substantially greater advantages in the following areas:

•capital resources;

•research and development resources;

•manufacturing capabilities; and

•sales and marketing resources.

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Smaller companies might also prove to be significant competitors, particularly through proprietary research discoveries and collaborative arrangements with large pharmaceutical and established biotechnology companies.

Many of our competitors have products that have been approved or are in advanced development. We face competition from other companies, academic institutions, governmental agencies and other public and private research organizations for collaborative arrangements with pharmaceutical and biotechnology companies, in recruiting and retaining highly qualified scientific and management personnel and for licenses to additional technologies. Our competitors, either alone or with their collaborators, may succeed in developing technologies or drugs that are more effective, safer, and more affordable or more easily administered than our product candidates and may achieve patent protection or commercialize drugs sooner than us. Developments by others may render our product candidates or our technologies obsolete. Our failure to compete effectively could have a material adverse effect on our business.

Government Regulation and Product Approval

Government authorities in the United States and in other countries extensively regulate, among other things, the research, development, testing, manufacturing, packaging, storage, recordkeeping, labeling, advertising, promoting, distributing, marketing, importing and exporting, pricing, and government contracting related to pharmaceutical products such as those we are developing.

United States Government Regulation

In the United States, the FDA regulates drugs under the Federal Food, Drug, and Cosmetic Act (“FDCA”) and its implementing regulations. The process of obtaining marketing approvals and the subsequent compliance with appropriate federal, state, local and foreign statutes and regulations requires the expenditure of substantial time and financial resources. Failure to comply with the applicable United States requirements at any time during the product development process, approval process or after approval, may subject an applicant to a variety of administrative or judicial sanctions, or other actions, such as the FDA’s delay in review of or refusal to approve a pending new drug application (“NDA”) or biologics license application (“BLA”), withdrawal of an approval, imposition of a clinical hold or study termination, issuance of Warning Letters or Untitled Letters, mandated modifications to promotional materials or issuance of corrective information, requests for product recalls, consent decrees, corporate integrity agreements, deferred prosecution agreements, product seizures or detentions, refusal to allow product import or export, total or partial suspension, restriction, or imposition of other requirements relating to production or distribution, injunctions, consent decrees, fines, debarment from government contracts and refusal of future orders under existing contracts, exclusion from participation in federal and state healthcare programs, FDA debarment, restitution, disgorgement or civil or criminal penalties, including fines and imprisonment.

FDA Marketing Approval

Obtaining FDA marketing approval for new products may take many years and require the expenditure of substantial financial resources. For the FDA to determine that a product is safe and effective for the proposed indication, the product must first undergo testing in animals (nonclinical studies). The data generated from nonclinical studies is used to support the filing of an investigational new drug application (“IND”) under which human studies are conducted. Human testing is generally conducted under an IND in three phases following Good Clinical Practices (“GCP”) regulations:

•Phase 1 studies evaluate the safety and tolerability of the drug, generally in normal, healthy volunteers;

•Phase 2 studies evaluate safety and efficacy, as well as appropriate doses; these studies are typically conducted in patient volunteers who suffer from the particular disease condition that the drug is designed to treat; and

•Phase 3 studies evaluate safety and efficacy of the product at specific doses in one or more larger pivotal trials.

In addition to human testing, the manufacturing process of the potential product must be developed in accordance with cGMP regulations. Prior to the approval of a new product, the FDA may inspect the facilities at which the proposed drug product is to be manufactured to ensure cGMP compliance. FDA may also inspect clinical trial sites and applicable laboratories.

In addition to the cumulative safety and efficacy data generated from the clinical trials described above, chemistry, manufacturing and control (“CMC”) information, nonclinical study data and proposed labeling form the basis to support approval of a NDA or BLA to the FDA. The preparation of a NDA or BLA requires the expenditure of substantial funds and the commitment of substantial resources. Additionally, at the time of a NDA or BLA submission a user fee is required to be paid unless the product has orphan drug designation (“ODD”). The FDA conducts a preliminary administrative review upon receipt

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of the NDA or BLA submission and decides whether to accept the NDA or BLA submission. If the application is not accepted for review by the FDA, the Sponsor of the application must resolve the deficiencies and re-submit the application, re-starting the review clock.

After evaluating the NDA or BLA and all related information, including if there is an advisory committee recommendation, and inspection reports regarding the manufacturing or laboratory facilities and clinical trial sites, the FDA may issue an approval letter, or, in some cases, a complete response letter (“CRL”). A CRL generally contains a statement of specific conditions that must be met to secure final approval of the NDA or BLA and may require additional clinical or nonclinical studies, or other information, in order for FDA approval. Even with submission of this additional information, the FDA may decide that the NDA or BLA does not satisfy the regulatory criteria for approval. If and when those conditions have been met to the FDA’s satisfaction, the FDA may issue an approval letter. An approval letter authorizes commercial marketing of the drug with specific prescribing information for specific indications.

The development and approval of new drugs requires substantial time, effort and financial resources. Data obtained from a development program is not always conclusive and may be susceptible to varying interpretations. These instances may delay, limit or prevent regulatory approval. The FDA may not grant approval on a timely basis, or at all. We may encounter difficulties or unanticipated costs in our efforts to secure necessary governmental approvals, which could delay or preclude us from marketing any approved product candidates. The FDA may limit the indications for use or place other conditions on any approvals that could restrict the commercial application of the approved product.

FDA Post‐Approval Considerations

Drugs manufactured or distributed pursuant to FDA approval are subject to continuing regulation by the FDA, including, among other things, requirements relating to recordkeeping, manufacturing, periodic reporting, product sampling and distribution, advertising and promotion, and reporting of adverse experiences with the product and drug shortages. During the approval process, the FDA and the sponsor may agree that specific studies or clinical trials should be conducted as post-marketing commitments, but they are not required by statute or regulation. The FDA may also impose post-marketing requirements as a condition of approval of an NDA or BLA. For example, the FDA may require post-marketing testing, including Phase 4 clinical trials and surveillance, to further assess and monitor the product’s safety and effectiveness after commercialization. Once an approval is granted, the FDA may withdraw the approval if compliance with regulatory requirements and standards is not maintained or if problems occur after the product becomes available in the market.

After approval, most changes to the approved product, such as manufacturing changes and adding new indications or other labeling claims, are subject to FDA review and approval. There are also annual user fee requirements for any marketed product and new application fees for supplemental applications with clinical data. Additionally, the FDA strictly regulates the labeling, advertising and promotion of products under an approved NDA or BLA. The FDA and other agencies actively enforce the laws and regulations prohibiting the promotion of off‐label uses, and a company that improperly markets or promotes off‐label uses may be subject to significant liability, including criminal and civil penalties under the FDCA and False Claims Act, exclusion from participation in federal healthcare programs, debarment from government contracts, refusal of future orders under existing contracts and mandatory compliance programs under corporate integrity agreements or deferred prosecution agreements.

Other Regulations of the Healthcare Industry

In addition to FDA regulations governing the marketing of pharmaceutical products, there are various state and federal laws that may restrict business practices in the biopharmaceutical industry. These include the following:

•The federal Anti-Kickback laws and implementing regulations, which prohibit persons from knowingly and willfully soliciting, offering, receiving or providing remuneration, directly or indirectly, in cash or in kind, to induce either the referral of an individual, or furnishing or arranging for a good or service, for which payment may be made under federal healthcare programs such as the Medicare and Medicaid programs;

•Other Medicare laws, regulations, rules, manual provisions and policies that prescribe the requirements for coverage and payment for pharmaceutical products and services, including the amount of such payment;

•The federal False Claims Act, which imposes civil and criminal liability on individuals and entities who submit, or cause to be submitted, false or fraudulent claims for payment to the government;

•The Foreign Corrupt Practices Act (“FCPA”), which prohibits certain payments made to foreign government officials; and

•State and foreign law equivalents of the foregoing and state laws regarding pharmaceutical company marketing compliance, reporting and disclosure obligations.

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If our operations are found to be in violation of any of these laws, regulations, rules or policies or any other law or governmental regulation, or if interpretations of the foregoing change, we may be subject to civil and criminal penalties, damages, fines, exclusion from the Medicare and Medicaid programs and the curtailment or restructuring of our operations.

To the extent that any of our product candidates are approved for sale in a foreign country, we may be subject to similar foreign laws and regulations, which may include, for instance, applicable post‐marketing requirements, including safety surveillance, anti‐fraud and abuse laws, and implementation of corporate compliance programs and reporting of payments or transfers of value to healthcare professionals.

Coverage and Reimbursement

Our ability to commercialize and, the commercial success of, any approved product candidates will depend in part on the extent to which governmental authorities, private health insurers and other third‐party payers provide coverage for and establish adequate reimbursement levels for our therapeutic product candidates. In the United States, the European Union and other potentially significant markets for our product candidates, government authorities and third‐party payers are increasingly imposing more stringent requirements and restrictions on coverage, attempting to limit reimbursement levels or regulate the price of drugs and other medical products and services, particularly for new and innovative products and therapies, which often has resulted in average selling prices lower than they would otherwise be. For example, in the United States, federal and state governments reimburse covered prescription drugs at varying rates generally below average wholesale price. Federal programs also impose price controls through mandatory ceiling prices on purchases by federal agencies and federally funded hospitals and clinics and mandatory rebates on retail pharmacy prescriptions paid by Medicaid and Tricare. These restrictions and limitations influence the purchase of healthcare services and products. Legislative proposals to reform healthcare or reduce costs under government programs may result in lower reimbursement for our product candidates or exclusion of our product candidates from coverage. Moreover, the Medicare and Medicaid programs increasingly are used as models for how private payers and other governmental payers develop their coverage and reimbursement policies.

In addition, the increased emphasis on managed healthcare in the United States and on country and regional pricing and reimbursement controls in the European Union will put additional pressure on product pricing, reimbursement and utilization, which may adversely affect any future product sales and our results of operations. These pressures can arise from rules and practices of managed care groups, competition within therapeutic classes, availability of generic equivalents, judicial decisions and governmental laws and regulations related to Medicare, Medicaid and healthcare reform, coverage and reimbursement policies and pricing in general. The cost containment measures that healthcare payers and providers are instituting and any healthcare reform implemented in the future could significantly reduce our revenues from the sale of any approved products. We cannot provide any assurances that we will be able to obtain and maintain third‐party coverage or adequate reimbursement for our approved products in whole or in part.

Healthcare Reform

The United States and many foreign jurisdictions have enacted or proposed legislative and regulatory changes affecting the healthcare system. The United States government, state legislatures and foreign governments also have shown significant interest in implementing cost-containment programs to limit the growth of government-paid healthcare costs, including price controls, restrictions on reimbursement and requirements for substitution of generic products for branded prescription drugs.

In recent years, Congress has considered reductions in Medicare reimbursement levels for drugs administered by physicians. Further, the Center for Medicare & Medicaid Services (“CMS”), the agency that administers the Medicare and Medicaid programs, also has authority to revise reimbursement rates and to implement coverage restrictions for some drugs. Cost reduction initiatives and changes in coverage implemented through legislation or regulation could decrease utilization of and reimbursement for any approved products. While Medicare regulations apply only to drug benefits for Medicare beneficiaries, private payers often follow Medicare coverage policy and payment limitations in setting their own reimbursement rates. Therefore, any reduction in reimbursement that results from federal legislation or regulation may result in a similar reduction in payments from private payers.

The Patient Protection and Affordable Care Act of 2010, as amended by the Health Care and Education Affordability Reconciliation Act of 2010 (collectively, the “Affordable Care Act” or “ACA”), substantially changed the way healthcare is financed by both governmental and private insurers, and significantly impacts the pharmaceutical industry. The ACA was intended to broaden access to health insurance, reduce or constrain the growth of healthcare spending, enhance remedies against healthcare fraud and abuse, add new transparency requirements for healthcare and health insurance industries, impose new

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taxes and fees on pharmaceutical and medical device manufacturers, and impose additional health policy reforms. Since its passage, there have been significant ongoing efforts to modify or eliminate the ACA.

The Trump administration pushed for modifications to the ACA. In addition, the Tax Cuts and Jobs Act (the “TCJA”), enacted on December 22, 2017, repealed the shared responsibility payment for individuals who fail to maintain minimum essential coverage under section 5000A of the Internal Revenue Code of 1986, as amended (the “IRC”), commonly referred to as the individual mandate. While the Biden administration has rolled back many of the executive orders issued by former President Trump and has stated that it intends to build on the ACA and to expand coverage thereunder, ongoing repeal and reform efforts impacting the ACA and the healthcare sector more broadly are likely.

Other legislative changes have been proposed and adopted since passage of the ACA. These have, among other things, reduced Medicare payments to several types of providers, including hospitals, imaging centers and cancer treatment centers, and increased the statute of limitations period for the government to recover overpayments to providers.

Further legislative and regulatory changes under the ACA remain possible. The Biden administration has signaled that it plans to build on the ACA and has expanded the number of people who are eligible for subsidies under it. The Inflation Reduction Act of 2022, enacted on August 16, 2022, includes several provisions to lower prescription drug costs for Medicare patients and reduce drug spending by the federal government. Pursuant to this, the CMS announced in August 2023 that it had selected the first ten drugs covered under Medicare Part D for negotiation. It is unknown what this negotiation will yield or what form any future changes or any law would take, and how or whether it may affect our business in the future. We expect that changes or additions to the ACA, the Medicare and Medicaid programs, changes allowing the federal government to directly negotiate drug prices and changes stemming from other healthcare reform measures, especially with regard to healthcare access, financing or other legislation in individual states, could have a material adverse effect on the healthcare industry. In addition, the Affordable Care Act has also been subject to challenges in the courts, which remain ongoing.

Payment methodologies may be subject to changes in healthcare legislation and regulatory initiatives as well. In addition, at the state level, legislatures have passed and implemented, and may in the future pass and implement legislation and regulations designed to control pharmaceutical product pricing, including price or patient reimbursement constraints, discounts, restrictions on certain product access and marketing cost disclosure and transparency measures, and, in some cases, designed to encourage importation from other countries and bulk purchasing.

We expect that additional federal, state and foreign healthcare reform measures could 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 limited coverage and reimbursement and reduced demand for our products, once approved, or additional pricing pressures.

Exclusivity and Approval of Competing Products

Hatch‐Waxman Patent Exclusivity

In seeking approval for a drug through an NDA, applicants are required to list with the FDA each patent with claims that cover the applicant’s product or a method of using the product. Upon approval of a NDA, each of the patents listed in the application for the drug is then published in the FDA’s Approved Drug Products with Therapeutic Equivalence Evaluations, commonly known as the Orange Book. Drugs listed in the Orange Book can, in turn, be cited by potential competitors in support of approval of an abbreviated new drug application (“ANDA”) or 505(b)(2) NDA. Generally, an ANDA provides for marketing of a drug product that has the same active ingredients in the same strengths, dosage form and route of administration as the listed drug and has been shown to be bioequivalent through in vitro or in vivo testing or otherwise to the listed drug. ANDA applicants are not required to conduct or submit results of preclinical or clinical tests to prove the safety or effectiveness of their drug product, other than the requirement for bioequivalence testing. Drugs approved in this way are commonly referred to as “generic equivalents” to the listed drug and can often be substituted by pharmacists under prescriptions written for the reference listed drug.

The ANDA or 505(b)(2) NDA applicant is required to provide a certification to the FDA in the product application concerning any patents listed for the approved product in the FDA’s Orange Book, except for patents covering methods of use for which the applicant is not seeking approval. Specifically, the applicant must certify with respect to each patent that:

•the required patent information has not been filed;

•the listed patent has expired;

•the listed patent has not expired, but will expire on a particular date and approval is sought after patent expiration; or

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•the listed patent is invalid, unenforceable, or will not be infringed by the new product.

Generally, the ANDA or 505(b)(2) NDA cannot be approved until all listed patents have expired, except when the ANDA or 505(b)(2) NDA applicant challenges a listed patent or if the listed patent is a patented method of use for which approval is not being sought. A certification that the proposed product will not infringe the already approved product’s listed patents or that such patents are invalid or unenforceable is called a Paragraph IV Certification. If the applicant does not challenge the listed patents or does not indicate that it is not seeking approval of a patented method of use, the ANDA or 505(b)(2) NDA application will not be approved until all the listed patents claiming the referenced product have expired.

If the ANDA or 505(b)(2) NDA applicant has provided a Paragraph IV certification to the FDA, the applicant must also send notice of the Paragraph IV certification to the NDA and patent holders once the application has been accepted for filing by the FDA. The NDA and patent holders may then initiate a patent infringement lawsuit in response to the notice of the Paragraph IV certification. The filing of a patent infringement lawsuit within 45 days after the receipt of notice of the Paragraph IV certification automatically prevents the FDA from approving the ANDA or 505(b)(2) NDA until the earlier of 30 months, expiration of the patent, settlement of the lawsuit, a decision in the infringement case that is favorable to the ANDA applicant or other period determined by a court.

Hatch‐Waxman Non‐Patent Exclusivity

Market and data exclusivity provisions under the FDCA also can delay the submission or the approval of certain applications for competing products. The FDCA provides a five‐year period of non‐patent data exclusivity within the United States to the first applicant to gain approval of an NDA for a NCE. A drug is a NCE if the FDA has not previously approved any other new drug containing the same active moiety, which is the molecule or ion responsible for the therapeutic activity of the drug substance. During the exclusivity period, the FDA may not accept for review an ANDA or a 505(b)(2) NDA submitted by another company that contains the previously approved active moiety. However, an ANDA or 505(b)(2) NDA may be submitted after four years if it contains a certification of patent invalidity or non‐infringement.

The FDCA also provides three years of marketing exclusivity for an NDA, 505(b)(2) NDA, or supplement to an existing NDA or 505(b)(2) NDA, if new clinical investigations other than bioavailability studies that were conducted or sponsored by the applicant are deemed by the FDA to be essential to the approval of the application or supplement. Three‐year exclusivity may be awarded for changes to a previously approved drug product, such as new indications, dosages, strengths or dosage forms of an existing drug. This three‐year exclusivity covers only the conditions of use associated with the new clinical investigations and, as a general matter, does not prohibit the FDA from approving ANDAs or 505(b)(2) NDAs for generic versions of the original, unmodified drug product. Five‐year and three‐year exclusivity will not delay the submission or approval of a full NDA; however, an applicant submitting a full NDA would be required to conduct or obtain a right of reference to all of the preclinical studies and adequate and well‐controlled clinical trials necessary to demonstrate safety and effectiveness.

Approval of Biosimilars and Biologic Exclusivity

The Biologics Price Competition and Innovation Act of 2009 (“BPCIA”), which was enacted as part of the ACA, created an abbreviated approval pathway for biological products that are demonstrated to be “biosimilar” or “interchangeable” with an FDA-licensed reference biological product via an approved BLA. Biosimilarity to an approved reference product requires that there be no differences in conditions of use, route of administration, dosage form, and strength, and no clinically meaningful differences between the biological product and the reference product in terms of safety, purity, and potency. Biosimilarity is demonstrated in steps beginning with rigorous analytical studies or “fingerprinting”, in vitro studies, in vivo animal studies, and generally at least one clinical study, absent a waiver from the Secretary of Health and Human Services. The biosimilarity exercise tests the hypothesis that the investigational product and the reference product are the same. If at any point in the stepwise biosimilarity process a significant difference is observed, then the products are not biosimilar, and the product will have to developed and approved using a traditional NDA or BLA. In order to meet the higher hurdle of interchangeability, a sponsor must demonstrate that the biosimilar product can be expected to produce the same clinical result as the reference product, and for a product that is administered more than once, that the risk of switching between the reference product and biosimilar product is not greater than the risk of maintaining the patient on the reference product. Complexities associated with the larger, and often more complex, structures of biological products, as well as the process by which such products are manufactured, can pose significant hurdles to implementation.

Upon approval of a BLA, the biologic is listed by the FDA in its Approved Drug Products with Therapeutic Equivalence Evaluations, commonly known as the Purple Book, along with the date it was licensed; whether the FDA has determined that the licensed biological product is biosimilar to or interchangeable with a reference biological product (an already-licensed FDA biological product) and the date of expiration of applicable exclusivity. Under the BPCIA, a reference biologic is granted 12

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years of exclusivity from the time of first licensure of the reference product. This 12-year period includes 4 years before the FDA may accept for filing an application for a biologic that references a branded (reference) product.

Pediatric Exclusivity.

Pediatric exclusivity is another type of non‐patent marketing exclusivity in the United States and, if granted, provides for the attachment of an additional six months of marketing protection to the term of any existing regulatory exclusivity, including the non‐patent exclusivity period described above. This six‐month exclusivity may be granted if an NDA sponsor submits pediatric data that fairly respond to a written request from the FDA for such data. The data do not need to show the product to be effective in the pediatric population studied; rather, if the clinical trial is deemed to fairly respond to the FDA’s request, the additional protection is granted. This is not a patent term extension, but it effectively extends the regulatory period during which the FDA cannot approve an ANDA or 505(b)(2) application owing to regulatory exclusivity or listed patents.

Foreign Regulation

In order to market any product outside of the United States, we would need to comply with numerous and varying regulatory requirements of other countries regarding drug development, approval and commercialization. The approval process varies by country and can involve additional product testing and additional administrative review periods. The time required to obtain approval in other countries might differ from and be longer than that required to obtain FDA approval. Regulatory approval in one country does not ensure regulatory approval in another, but a failure or delay in obtaining regulatory approval in one country may negatively impact the regulatory process in others. The processes for obtaining marketing approvals in foreign countries, along with subsequent compliance with applicable statutes and regulations, require the expenditure of substantial time and financial resources.

European Union Drug Approval Process

To obtain a marketing authorization of a drug in the European Union, we may submit marketing authorization applications (“MAAs”) either under the so‐called centralized, decentralized, mutual recognition or national authorization procedures.

Centralized procedure

The centralized procedure provides for the grant of a single marketing authorization following a favorable opinion by the European Medicines Agency (“EMA”) that is valid in all European Union member states, as well as Iceland, Liechtenstein and Norway. The centralized procedure is compulsory for medicines produced by specified biotechnological processes, products designated as orphan medicinal products, and products with a new active substance indicated for the treatment of specified diseases, such as HIV/AIDS, cancer, diabetes, neurodegenerative disorders or autoimmune diseases and other immune dysfunctions and viral diseases. The centralized procedure is optional for products that represent a significant therapeutic, scientific or technical innovation, or whose authorization would be in the interest of public health.

National authorization procedures

There are also three other possible routes to authorize medicinal products in several European Union countries, which are available for investigational medicinal products that fall outside the scope of the centralized procedure.

•National authorization procedure. This procedure involves submitting an MAA to an individual EU country’s competent authority for approval. Each EU Member State has its own national authorization procedures.

•Decentralized procedure. Using the decentralized procedure, an applicant may apply for simultaneous authorization in more than one European Union country of medicinal products that have not yet been authorized in any European Union country and that do not fall within the mandatory scope of the centralized procedure.

•Mutual recognition procedure. In the mutual recognition procedure, a medicine is first authorized in one European Union Member State, in accordance with the national procedures of that country. Following this, further marketing authorizations can be sought from other European Union countries in a procedure whereby the countries agree to recognize the validity of the original, national marketing authorization.

In the European Union, new products authorized for marketing (i.e., reference products) qualify for eight years of data exclusivity and an additional two years of market exclusivity upon marketing authorization. The data exclusivity period prevents generic applicants from relying on the preclinical and clinical trial data contained in the dossier of the reference

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product when applying for a generic marketing authorization in the EU during a period of eight years from the date on which the reference product was first authorized in the EU. The market exclusivity period prevents a successful generic applicant from commercializing its product in the EU until ten years have elapsed from the initial authorization of the reference product in the EU. The ten‐year market exclusivity period can be extended to a maximum of eleven years if, during the first eight years of those ten years, the marketing authorization holder obtains an authorization for one or more new therapeutic indications which, during the scientific evaluation prior to their authorization, are held to bring a significant clinical benefit in comparison with existing therapies.

Former Commercially Marketed Product

Prior to October 2023, we had one commercially marketed product, Millipred®. We considered Millipred® a non-core asset. Our supply and license agreement for Millipred® ended on September 30, 2023.

Millipred® is an oral prednisolone indicated across a wide variety of inflammatory conditions and indications. Prednisolone is a man-made form of a natural substance (corticosteroid hormone) made by the adrenal gland. It is used to treat conditions such as arthritis, blood disorders, immune system disorders, skin and eye conditions, respiratory disorders, cancer, and severe allergies. Prednisolone decreases an individual's immune response to various diseases to reduce symptoms such as pain, swelling and allergic-type reactions. Millipred® primarily competed in the generic prednisolone market. Millipred® utilized the proprietary double taste-masking technology which provided a pleasant grape taste with no bitterness, which made the product easier to administer to children.

Employees and Human Capital Management

As of December 31, 2023, we had nineteen employees, all of whom are full-time. Eleven of our employees are primarily engaged in research and development activities. None of our employees are represented by a labor union or covered by a collective bargaining agreement. We consider our relationship with our employees to be good.

We believe that our future success largely depends upon our ability to attract and retain highly skilled and qualified personnel. We believe that we provide our employees with competitive salaries and bonuses, opportunities for equity ownership, and an employment package that promotes well-being across all aspects of their lives, including health care, retirement planning and paid time off. We value diversity and inclusiveness at all levels.

Corporate Information

We were incorporated in Delaware in 2011 and commenced operations in the second quarter of 2011. Our principal executive offices are located at 540 Gaither Road, Suite 400, Rockville, Maryland 20850, and our phone number is (410) 522-8707. Our website address is www.avalotx.com. The information on, or that can be accessed through, our website is not part of this report.

Available Information

Our annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K, and amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934 (the “Exchange Act”), are available free of charge on our website at www.avalotx.com as soon as reasonably practicable after electronically filing or furnishing such material to the Securities and Exchange Commission. The Securities and Exchange Commission maintains a website (www.sec.gov) that includes our reports, proxy statements and other information.

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Item 1A. Risk Factors.

You should consider carefully the following information about the risks described below, together with the other information contained in this Annual Report on Form 10-K and in our other public filings, in evaluating our business. If any of the following risks actually occurs, our business, financial condition, results of operations and future growth prospects would likely be materially and adversely affected. In these circumstances, the market price and value of our securities would likely decline.

Risks Related to Our Financial Position and Capital Needs

We expect to require additional capital in the future to continue to fund our operations and to finance the further advancement of our product candidates, which might not be available to us on acceptable terms, or at all. Failure to obtain any necessary capital could force us to delay, limit or terminate our product development efforts or cease our operations.

At December 31, 2023, we had $7.4 million in cash and cash equivalents and $4.6 million in current liabilities. In March 2024, we closed a private placement financing for up to $185 million in gross proceeds, including initial upfront gross investment of $115.6 million. Avalo estimates upfront net proceeds of approximately $105 million after deducting estimated transaction fees and expenses from both the private placement financing and the acquisition of AlmataBio. The Company could receive an additional $69.4 million of gross proceeds upon the exercise of warrants issued in the financing. Accordingly, as of the date of this Report, we believe we have sufficient funds to finance our continuing operations beyond the short term to further advance our product candidates. We may not have sufficient funds in the intermediate term and will likely need to raise additional funds prior to any phase 3 development of our product candidates.

As a research and development company, our operations have consumed substantial amounts of cash since inception. Identifying potential product candidates and conducting preclinical testing and clinical trials is a time‐consuming, expensive and uncertain process that takes years to complete, and we expect our research and development expenses to increase substantially in connection with our ongoing activities, particularly as we advance our current product candidates through or into clinical trials. Circumstances may cause us to consume or require capital more rapidly than we currently anticipate. As an example, our cash position in the past has caused us to prioritize product candidates for development, out-license certain product candidates and to defer the development of other candidates. We will need to raise additional funds or otherwise obtain funding through collaborations to complete the development of any of our product candidates and to continue our operations.

Additional fundraising efforts may divert our management from our day‐to‐day activities, which may adversely affect our ability to develop and commercialize our product candidates. In addition, we cannot guarantee that future financing will be available in sufficient amounts or on terms acceptable to us, if at all. Furthermore, our ability to raise capital on a timely basis through the issuance and sale of equity securities might be limited by Nasdaq’s listing rules on transactions that do not qualify as “public offerings” (as defined in Nasdaq listing rules), which might require us to obtain stockholder approval prior to the issuance of common stock (or securities convertible into or exercisable for common stock) at a price per share that is less than the “Minimum Price” if the issuance would equal 20% or more of our common stock outstanding before the issuance.

We might never progress to the point where we have commercially successful product sales or other revenue sufficient to sustain operations. Accordingly, we may seek to raise needed funds through public or private equity offerings, debt financings, credit facilities, partnering or other corporate collaborations and licensing arrangements. If adequate funds are not available or are not available on acceptable terms, our ability to fund our operations, take advantage of opportunities, develop products and technologies, and otherwise respond to competitive pressures could be significantly delayed or limited, and we might need to downsize or halt our operations.

If we do not raise additional capital when required or on acceptable terms, we may need to:

•Significantly delay, scale back or discontinue the development or commercialization of one or more of our product candidates or cease operations altogether;

•Seek strategic alliances for research and development programs at an earlier stage than we would otherwise desire or on terms less favorable than might otherwise be available; or

•Relinquish, or license on unfavorable terms, our rights to technologies or any future product candidates that we otherwise would seek to develop or commercialize ourself.

Our future funding requirements, both short and long term, will depend on many factors, including:

•The initiation, progress, timing, costs and results of preclinical and clinical studies for our product candidates and any future product candidates we may develop;

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•The level of research and development investment required to develop product candidates;

•The rate and level of patient recruitment into clinical trials;

•The timing and amount of milestone payments we are required to make under license agreements;

•Changes in product development plans needed to address any difficulties that may arise in manufacturing, preclinical activities, clinical trials or commercialization;

•The outcome, timing and cost of seeking and obtaining regulatory approvals from the FDA and other regulatory authorities, including the potential for such authorities to require that we perform more studies than currently expected;

•The cost to establish, maintain, expand and defend the scope of our intellectual property portfolio and patent claims, including the amount and timing of any payments we may be required to make, or that we may receive, in connection with licensing, preparing, filing, prosecuting, defending and enforcing any patents or other intellectual property rights;

•The effect of competing technological and market developments;

•The cost and timing of selecting, auditing and potentially validating a manufacturing site for commercial‐scale manufacturing; and

•The cost of future commercialization activities including, developing our sales, marketing. manufacturing and distribution capabilities to accommodate any of our product candidates for which we receive marketing approval and that we determine to commercialize ourselves or in collaboration with our partners;

•Market acceptance of any approved product candidates;

•The effect of competing product and market developments;

•The ability and willingness to enter into new agreements with strategic partners, and the terms of these agreements; and

•The costs of acquiring, licensing or investing in additional businesses, products, product candidates and technologies.

We have incurred significant net losses in most periods since our inception and we expect to continue to incur net losses in the future.

Investment in biopharmaceutical product development is highly speculative because it entails substantial upfront capital expenditures and significant risk that any potential product candidate will fail to demonstrate an adequate effect or acceptable safety profile, gain marketing approval and become commercially viable. Historically, we have financed our operations primarily through public and private equity offerings. We incurred a net loss of $31.5 million for the year ended December 31, 2023. As of December 31, 2023, we had an accumulated deficit of $335.1 million. Substantially all of our operating losses have resulted from costs incurred in connection with our research and development program and from general and administrative costs associated with our operations.

We expect to continue to incur losses in the future and we might never achieve profitability on an annual basis. We may also encounter unforeseen expenses, difficulties, complications, delays and other unknown factors that may adversely affect our business. Our future profitability will depend, in part, on the rate of future growth of our expenses as we develop our product candidates and our ability to obtain approval of one or more of our product candidates to generate revenues. Our prior losses and expected future losses have had and will continue to have an adverse effect on our stockholders’ equity and working capital.

We face risks associated with short-term liquid investments.

In March 2024, we closed a private placement financing for up to $185 million in gross proceeds, including initial upfront gross investment of $115.6 million. Avalo estimates upfront net proceeds of approximately $105 million after deducting estimated transaction fees and expenses from both the private placement financing and the acquisition of AlmataBio. The Company could receive an additional $69.4 million of gross proceeds upon the exercise of warrants issued in the financing. We historically have invested our cash in money market funds and intend to invest in a variety of short-term investments, including money market funds, that are intended to preserve principal value and maintain a high degree of liquidity while providing current income. These types of investments are not insured against loss of principal and there is no guarantee that investments in these funds will be redeemable at par value. Once invested, if we cannot liquidate our investments, or redeem them at par, we could incur losses and experience liquidity issues. A decline in the value of our investments or a delay or suspension of our right to redeem may have a material adverse effect on our results of operations or financial condition.

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

We have a significant amount of gross net operating losses (“NOLs”) for federal and state purposes. The NOLs accumulated through the end of 2017 will begin to expire in 2031. Unused NOLs for the current tax year and prior tax years will carry forward to offset future taxable income, if any, until such unused losses expire. Unused NOLs generated after December 31, 2017, will not expire and may be carried forward indefinitely but will be only deductible to the extent of 80% of current year taxable income in any given year. In addition, both the deductibility of current and future unused NOL carryovers may be subject to limitation under Sections 382 and 383 of the IRC. Sections 382 and 383 of the IRC subject the future utilization of NOLs and certain other tax attributes, such as research and experimental tax credits, to an annual limitation in the event of certain ownership changes. In general, an “ownership change” is defined as a greater than 50% change (by value) in equity ownership over a three-year period.

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Our operating results fluctuate from quarter to quarter and year to year, making future operating results difficult to predict.

Our quarterly and annual operating results historically have fluctuated and are likely to continue to fluctuate depending on several factors, many of which are beyond our control. Accordingly, our quarterly and annual results are difficult to predict prior to the end of the quarter or year, and we may be unable to confirm or adjust expectations with respect to our operating results for a particular period until that period has closed. In the event we provide cash projections or other guidance, any failure to meet such targets or failure to meet the expectations of analysts could adversely impact the market price of our securities. Therefore, you should not rely upon the results of any quarterly or annual periods as indications of future operating performance.

Our role as a guarantor of certain obligations assigned to Aytu exposes us to risk of loss or illiquidity.

In connection with the Aytu Divestiture, as defined in the Notes to our Consolidated Financial Statements, we assigned payment obligations (“TRIS Obligations”) to Aytu under a supply and distribution agreement (the “Karbinal Agreement”) with TRIS Pharma Inc. (“TRIS”), which includes a per-unit royalty make whole payment for each unit sold under an annual minimum sales commitment through 2025. The total future make-whole payments to be made by Aytu are unknown as the amount owed to TRIS is dependent on the number of units sold.

As a part of the assignment, we became a guarantor to the TRIS Obligations. If Aytu defaults under the terms of the Karbinal Agreement, we could be liable as a guarantor for unpaid amounts of the TRIS Obligation. Any amount we would be required to pay under the TRIS Obligation would limit the amount of cash available for development of our clinical pipeline and may expose us to significant losses, which would materially and adversely affect our results of operations.

We have no approved commercial products.

Our supply and license agreement for our only commercial pharmaceutical product, Millipred®, which the Company considered a non-core asset, expired on September 30, 2023. The product revenue from Millipred® was not sufficient to provide adequate capital for the continued development of our product candidates. With no commercial products, our operations are not expected to produce revenues for the foreseeable future, or at all, which might harm our ability to obtain additional financing and might require us to reduce or discontinue our operations.

Our ability to increase revenue in the future will depend on developing and commercializing our current clinical pipeline of product candidates. Identifying, developing, obtaining regulatory approval and commercializing product candidates are prone to the risks of failure inherent in clinical development. Developing product candidates is expensive, and we expect to spend substantial amounts as we fund our product development. We cannot provide any assurance that we will be able to successfully advance any product candidate through the development process or successfully commercialize any product candidate, or that any such product candidate will be widely accepted in the marketplace or be more effective than other commercially available alternatives. Any failure to develop or commercialize a product candidate in our current clinical pipeline could require us to raise additional financing.

We might not collect the outstanding money owed to us under the Millipred® transition service agreement.

Aytu Bioscience, Inc. (“Aytu”) managed Millipred® commercial operations until August 31, 2021 pursuant to a transition service agreement with us, which included managing the third‐party logistics provider and providing accounting reporting services. Aytu collected cash on behalf of Avalo for revenue generated by sales of Millipred® from the second quarter of 2020 through the third quarter of 2021 and is obligated to transfer the cash generated by such sales. In the third quarter of 2021, Avalo finalized its trade and distribution channel to allow it to control third party distribution and began managing commercial operations at that time. The current transition service agreement allows Aytu to withhold cash of $1,000,000 until December 1, 2024, at which point, the full amount is due to Avalo. Adverse economic conditions or financial difficulties of Aytu could impair its ability to remit such payments or could cause Aytu to delay such payments. If Aytu were unable to meet its obligations, it could consider restructuring under the bankruptcy laws, which might make it difficult for us to collect all or a significant portion of the cash owed to us by Aytu. Our inability to collect the accounts receivable to our revenues generated by Millipred® from Aytu could adversely affect our cash flows, financial condition, and results of operations. As of December 31, 2023, Aytu owed us approximately $0.7 million.

Risks Related to the Discovery and Development of Our Product Candidates

If we fail to completely and successfully integrate the anti-Il-1β mAb asset that we recently acquired, we may not realize the anticipated benefits from that acquisition, and our results of operations would be materially and adversely affected. Further, our near-term focus on AVTX-009 may negatively impact the planned development of our other product candidates.

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In March 2024, we acquired a Phase 2-ready anti-Il-1β mAb, which we refer to as AVTX-009, through the acquisition of AlmataBio, Inc. (“AlmataBio”). We intend for AVTX-009 to be the Company’s lead asset. In the near-term, we plan to progress the asset for the treatment of hidradenitis suppurativa, however we could explore additional autoimmune indications. While we have experience with anti-inflammatory product candidates and AVTX-009 is an anti-inflammatory product candidate, AVTX-009 is a new product candidate for us for which we have no prior experience. Our ability to successfully integrate AVTX-009 into our operations may be more difficult, costly or time-consuming than we anticipate, or we may not otherwise realize any of the anticipated benefits of this acquisition. Any of the foregoing could adversely affect our future results of operations or could cause our stock price to decline.

If clinical trials of our product candidates fail to demonstrate safety and efficacy to the satisfaction of regulatory authorities or do not otherwise produce positive results, we may incur additional costs or experience delays in completing, or ultimately be unable to complete, the development and commercialization of our product candidates.

Before obtaining required approvals from regulatory authorities for the sale of product candidates, we alone, or with a partner, must conduct extensive clinical trials to demonstrate the safety and efficacy of the product candidates in humans. Clinical testing is expensive and difficult to design and implement, can take many years to complete and is uncertain as to outcome. A failure of one or more clinical trials can occur at any stage of testing. The outcome of preclinical studies and early clinical trials might not predict the success of later clinical trials, and interim results of a clinical trial do not necessarily predict final results. A number of companies in the pharmaceutical and biotechnology industries have suffered significant setbacks in advanced clinical trials due to lack of efficacy or unacceptable safety profiles, notwithstanding promising results in earlier trials. Our product candidates will require additional clinical and preclinical development, management of clinical, preclinical and manufacturing activities, regulatory approval in multiple jurisdictions, obtaining manufacturing supply on our own or from a third party, expansion of our commercial organization, and substantial investment and significant marketing efforts before we could generate any revenues from sales of any of those product candidates approved for marketing. We do not know whether the clinical trials we or our partners may conduct will demonstrate adequate efficacy and safety data resulting in regulatory approval enabling us to market any of our product candidates in any particular country. If later stage clinical trials do not produce favorable results, our ability to achieve regulatory approval for any of our product candidates would be adversely impacted, which could cause a sharp decline in our stock price and/or lead to insolvency of the Company.

Our product candidates that we intend to commercialize are in early to mid-stages of development. If we do not successfully complete nonclinical testing and clinical development of our product candidates or experience delays in doing so, our business may be materially harmed. Our near-term focus and reliance on AVTX-009 increases the risk of such exposure.

We have invested a significant portion of our efforts and financial resources in the identification and preclinical and clinical development of product candidates. Our ability to generate significant product revenues will depend on our ability to advance our clinical product candidates towards approval and our preclinical product candidates into clinical development. The outcome of preclinical studies and earlier clinical trials might not predict the success of future clinical trials. Preclinical data and clinical trial data may be susceptible to varying interpretations and analyses, and many product candidates that performed satisfactorily in preclinical studies and early clinical trials have nonetheless failed in later clinical development. Our inability to successfully complete development of any of our product candidates could result in additional costs to us relating to product development and obtaining marketing approval and impair our ability to generate product revenues and commercialization and sales milestone payments and royalties on product sales.

If we experience delays in clinical testing, we will be delayed in obtaining regulatory approvals and commercializing our product candidates, our costs may increase and our business may be harmed.

We do not know whether any clinical trials will begin as planned, whether the design will be revised prior to or during conduct of the study, completed on schedule or conducted at all. Our product development costs will increase if we experience delays in clinical testing. Significant clinical trial delays also could shorten any periods during which we may have the exclusive right to commercialize our product candidates or allow our competitors to bring products to market before we do, which would impair our ability to successfully commercialize our product candidates and may harm our business, results of operations and prospects.

Events which may result in a delay or unsuccessful completion of clinical development include:

•Delays in reaching an agreement with or failure in obtaining authorization from the FDA, other regulatory authorities or institutional review boards (“IRBs”) or ethics committees (“ECs”) to commence or amend a clinical trial;

•Delays in reaching agreements with the FDA or other regulatory authorities regarding requisite trial design or endpoints sufficient to establish a clinically meaningful benefit of our product candidates given there might not be well-established development paths and outcomes;

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•Inability to agree with the FDA or other regulatory authorities on operationally viable endpoints or trial design;

•Imposition of a clinical hold or trial termination following an inspection of our clinical trial operations or trial sites by the FDA or other regulatory authorities, or due to concerns about trial design, or a decision by the FDA, other regulatory authorities, IRBs, ECs or us, or recommendation by a data safety monitoring board, to place the trial on hold or otherwise suspend or terminate clinical trials at any time for safety issues or for any other reason;

•Delays in reaching agreement on acceptable terms with prospective contract research organizations (“CROs”) and clinical trial sites;

•Deviations from the trial protocol by clinical trial sites and investigators, or failing to conduct the trial in accordance with regulatory requirements;

•Failure of our third parties, such as CROs, to satisfy their contractual duties or meet expected deadlines;

•Failure to enter into agreements with third parties to obtain the results of clinical trials;

•Delays in the importation and manufacture of clinical supply;

•Delays in the testing, validation and delivery of the clinical supply of the product candidates to the clinical sites;

•For clinical trials in selected subject populations, delays in identification and auditing of central or other laboratories and the transfer and validation of assays or tests to be used to identify selected subjects;

•Delays due to the world-wide shortage of animal testing subjects, including monkeys;

•Delays in recruiting suitable subjects to participate in a trial;

•Delays in having subjects complete participation in a trial or return for post‐treatment follow‐up;

•Delays caused by subjects dropping out of a trial due to side effects or disease progression;

•Delays in adding new investigators and clinical trial sites;

•Delays resulting from national or global health or geopolitical situations;

•Withdrawal of clinical trial sites from our clinical trials as a result of changing standards of care or the ineligibility of a site to participate in our clinical trials; or

•Changes in government regulations or administrative actions or lack of adequate funding to continue the clinical trials.

Any inability by us or our partners to complete clinical development in a timely manner could result in additional costs to us relating to product development and obtaining marketing approval and impair our ability to generate product revenues and commercialization and sales milestone payments and royalties on product sales.

If we are unable to enroll appropriate subjects in clinical trials or retain patients in the clinical trials we perform, we will be unable to complete these trials on a timely basis or at all.

Identifying and qualifying subjects to participate in clinical trials of our product candidates, and retaining the subjects once qualified, is critical to our regulatory success. The timing of our clinical trials depends on the speed at which we can recruit appropriate subjects to participate in testing our product candidates as well as completion of required follow‐up periods. If subjects are unwilling to participate in our trials, the timeline for recruiting subjects, conducting trials and obtaining marketing approval of potential products may be delayed.

Difficulty or delays in patient recruitment into our trials could result in increased costs, delays in advancing our product development, delays in testing the effectiveness of our technology or termination of the clinical trials altogether. Many factors affect subject enrollment, including:

•The size and nature of the subject population;

•The number and location of clinical sites we enroll;

•The proximity of subjects to clinical sites;

•Perceived risks and benefits of the product candidate under trial;

•Competition with other companies for clinical sites or subjects;

•The eligibility and exclusion criteria for the trial;

•The design of the clinical trial;

•Doctor, patient and public awareness of the clinical trials;

•Inability to obtain and maintain subject consent;

•Ability to monitor subjects adequately during and after the administration of the product candidate and the ability of subjects to comply with the clinical trial requirements;

•Risk that enrolled subjects will drop out or be withdrawn before completion; and

•Clinicians’ and subjects’ perceptions as to the potential advantages of the drug being studied in relation to other available therapies, including any new drugs that may be approved for the indications we are investigating.

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We rely on CROs and clinical trial sites to ensure the proper and timely conduct of our clinical trials, and while we have agreements governing their committed activities, we have limited influence over their actual performance. If we are unable to enroll sufficient subjects in our clinical trials, if enrollment is slower than we anticipate, or if our clinical trials require more subjects than we anticipate, our clinical trials may be delayed or might not be completed. If we experience delays in our clinical trials, the commercial prospects of our product candidates will be harmed. In addition, any delays in completing our clinical trials will increase our costs, slow down our product candidate development and approval process and jeopardize our ability to commence product sales and generate revenues. In addition, many of the factors that could cause a delay in the commencement or completion of clinical trials may also ultimately lead to the denial of regulatory approval of any of our product candidates.

We may fail to successfully identify, in‐license, acquire, develop or commercialize potential product candidates.

The success of our business has in the past and is expected to continue depend in part upon our ability to identify and validate new therapeutic targets and identify, develop and commercialize therapeutics, which we may develop ourselves, in‐license or acquire from others. Research programs designed to identify product candidates require substantial technical, financial and human resources, whether or not any product candidates are ultimately identified. Our research efforts may initially show promise in identifying potential therapeutic targets or candidates, yet fail to yield product candidates for clinical development for a number of reasons, including:

•Our methodology, including our screening technology, might not successfully identify medically relevant potential product candidates;

•Our competitors may develop alternatives that render our product candidates obsolete;

•We may encounter product manufacturing difficulties that limit yield or produce undesirable characteristics that increase the cost of goods, cause delays or make the product candidates unmarketable;

•Our product candidates may cause adverse effects in subjects, even after successful initial toxicology studies, or not be tolerable, which may make the product candidates unmarketable;

•Other drugs in the same drug class as our product candidates could develop unforeseen adverse effects that could negatively impact development, approval and/or future sales of our product candidates;

•Our product candidates might not be capable of being produced in commercial quantities at an acceptable cost, or at all;

•Our product candidates might not demonstrate a meaningful benefit to subjects;

•Our potential collaboration partners may change their development profiles or plans for potential product candidates or abandon a therapeutic area or the development of a partnered product candidates; and

•Our reliance on third party clinical trials may cause us to be denied access to clinical results that may be significant to further clinical development.

Additionally, we may focus our efforts and resources on potential programs or product candidates that ultimately prove to be unsuccessful. If any of these events occur, we may be forced to abandon our development efforts for a program or programs, which would have a material adverse effect on our business, operating results and prospects and could potentially cause us to cease operations.

Our product candidates may cause undesirable side effects or have other properties that could delay or prevent their marketing approval, limit the commercial profile of an approved label, or result in significant negative consequences following any marketing approval.

Undesirable side effects caused by our product candidates in clinical trials could cause us or regulatory authorities to issue a clinical hold and could result in a more restrictive label or the delay or denial of marketing approval by the FDA or other regulatory authorities. Results of our trials could reveal a high and unacceptable severity and prevalence of side effects or unexpected characteristics.

Should our clinical trials of our product candidates reveal undesirable side effects, we could suspend or terminate our trials or the FDA or other regulatory authorities as well as IRBs or ECs could order us to suspend or cease clinical trials. The FDA or other regulatory authorities could also deny approval of our product candidates for any or all targeted indications or only for a limited indication or patient population or could require label warnings and/or precautions, contraindications, including black box warnings, additional wording regarding adverse reactions, post‐market studies, testing and surveillance programs or other conditions including distribution restrictions or other risk management mechanisms under a risk evaluation and mitigation strategy (“REMS”). Drug‐related side effects could affect subject recruitment or the ability of enrolled subjects to complete the trial or result in potential product liability claims. Any of these occurrences may harm our business, financial condition and prospects significantly.

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Additionally, if one or more of our product candidates receives marketing approval, and we or others (regulatory agencies, consumers, etc.) later identify undesirable side effects caused by such products, a number of potentially significant negative consequences could result, including:

•We may suspend marketing of, or withdraw or recall, such product;

•Regulatory authorities may withdraw approvals of such product;

•Regulatory authorities may require additional warnings on the label or other label modifications;

•Regulatory authorities may issue safety alerts, Dear Healthcare Provider letters, press releases or other communications containing warnings about such product;

•Regulatory authorities may require the establishment or modification of a REMS or other restrictions on marketing and distribution, or may require the establishment or modification of a similar strategy that may, for instance, require us to issue a medication guide outlining the risks of such side effects for distribution to patients or restrict distribution of our products and impose burdensome implementation requirements on us;

•Regulatory authorities may require that we conduct post‐marketing studies; and

•We could be sued and held liable for harm caused to subjects or patients.

Any of these events could prevent us from achieving or maintaining market acceptance of the particular product candidate or otherwise materially harm the commercial prospects for the product candidate, if approved, and could significantly harm our business, financial condition, results of operations and prospects.

Changes in product candidate manufacturing or formulation may result in additional costs or delay.

As product candidates are developed through preclinical studies to late‐stage clinical trials towards regulatory approval and commercialization, it is common that various aspects of the development program, such as manufacturing methods and formulation, are altered in an effort to optimize processes and results. Such changes carry the risk that they will not achieve these intended objectives. Any of these changes could cause our product candidates to perform differently and affect the results of planned clinical trials or other future clinical trials conducted with the optimized materials. Such changes may also require additional testing, FDA or other regulatory authorities’ notification or approval.

Similarly, changes in the location of manufacturing or addition of manufacturing facilities may increase our costs and require additional studies and FDA approval. This may require us to ensure that the new facility meets all applicable regulatory requirements, is adequately validated and qualified, and conduct additional studies of product candidates manufactured at the new location. Any of the above could delay completion of clinical trials, require the conduct of bridging clinical trials or the repetition of one or more clinical trials, increase clinical trial costs, delay regulatory approval of our product candidates and jeopardize our ability to commence product sales and generate revenue.

Biologic products are highly complex and expensive, and if the third-party manufacturers we contract with are unable to provide quality and timely offerings to our clinical trial sites, our clinical trials might be delayed.

Our product candidates AVTX-009, AVTX-002 and AVTX-008 are biologics. The process of manufacturing biologics and their components is complex, expensive, 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. Furthermore, the development of biologic products involves a lengthy and expensive process with an uncertain outcome, which might require us to incur additional unforeseen costs to complete our clinical trials.

Although we are working with third parties to develop reproducible and commercially viable manufacturing processes for our biologic product candidates, doing so is a difficult and uncertain task, and there are risks associated with scaling to the level required for advanced clinical trials or commercialization, including, among others, cost overruns, potential problems with process scale-out, process reproducibility, stability issues, lot consistency, and timely availability of reagents or raw materials.

We may make changes as we continue to evolve the manufacturing processes for our biologic product candidates for advanced clinical trials and commercialization, and we cannot be sure that even minor changes in these processes will not cause our product candidates to perform differently and affect the results of our ongoing clinical trials, future clinical trials, or the performance of the product once commercialized. In some circumstances, changes in manufacturing operations, including to our protocols, processes, materials or facilities used, may require us to perform additional preclinical or comparability studies, or to collect additional clinical data from

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patients prior to undertaking additional clinical studies or filing for regulatory approval for a product candidate. These requirements might lead to delays in our clinical development and commercialization plans for our biologic product candidates and might increase our development costs substantially.

We face substantial competition and rapid technological change and the possibility that others may discover, develop or commercialize products before or more successfully than us.

The biotechnology and pharmaceutical industries are intensely competitive and subject to rapid and significant technological change. We face competition with respect to our current product candidates and will face competition with respect to any future product candidates from major pharmaceutical companies, specialty pharmaceutical companies and biotechnology companies worldwide. Many of our competitors have significantly greater financial, technical and human resources. Smaller and early‐stage companies may also prove to be significant competitors, particularly through collaborative arrangements with large and established companies.

Our competitors may obtain marketing approval of their products more rapidly than we may or may obtain patent protection or other intellectual property rights that limit our ability to develop or commercialize our product candidates. Our competitors may also develop drugs that are more effective, more convenient, more widely used and less costly or have a better safety profile and better tolerability than our products and these competitors may also be more successful than us in manufacturing and marketing their products.

Our competitors will also compete with us in recruiting and retaining qualified scientific, management and commercial personnel, establishing clinical trial sites and subject registration for clinical trials, as well as in acquiring technologies complementary to, or necessary for, our programs.

There are now and could be future numerous approved therapies for treating the conditions our product candidates seek to address and, consequently, competition in these markets is intense. Many of these approved drugs are or may become well-established therapies or products and widely accepted by physicians, patients and third‐party payors. Some of these drugs are or may become branded and subject to patent protection and non‐patent regulatory exclusivity, and others are or may become available on a generic basis.

Insurers and other third‐party payors may also encourage the use of generic products or specific branded products. We expect that any of our product candidates, if approved, would be priced at a significant premium over competitive generic, including branded generic, products, but, any new product that competes with an approved product must demonstrate compelling advantages in efficacy, convenience, tolerability and safety in order to overcome price competition and be commercially successful. This may make it difficult for us to differentiate any approved product candidate from currently approved therapies, which may adversely impact our business strategy. If we are not able to compete effectively against our current and future competitors, our business will not grow, and our financial condition and operations will suffer.

Our products might not achieve adequate market acceptance among physicians, patients, third‐party payors and others in the medical community necessary for commercial success.

Even if our product candidates have or receive marketing approval, they might not gain adequate market acceptance among physicians, patients and others in the medical community. Our commercial success also depends on coverage and adequate reimbursement of our product candidates by third‐party payors, including government payors, generally, which may be difficult or time‐consuming to obtain, may be limited in scope or might not be obtained in all jurisdictions in which we may seek to market our products. The degree of market acceptance of any of our approved product candidates will depend on a number of factors, including:

•The efficacy and safety profile of our product candidates, including relative to marketed products and product candidates in development by third parties;

•Prevalence and severity of any side effects of our product candidates;

•Relative convenience and ease of administration of our product candidates;

•Cost effectiveness of our product candidates;

•The claims we may make for our product candidates based on the approved label or any restrictions placed upon our marketing and distribution of our product candidates;

•The time it takes for our product candidates to complete clinical development and receive marketing approval;

•How quickly and effectively we alone, or with a partner, can market, launch, and distribute any of our product candidates that receive marketing approval;

•The ability to commercialize any of our product candidates that receive marketing approval;

•The price of our approved product candidates, including in comparison to branded or generic competitors and relative to alternative treatments;

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•Potential or perceived advantages or disadvantages of our approved product candidates over alternative treatments;

•The ability to collaborate with others in the development and commercialization of new products;

•Whether coverage and adequate levels of reimbursement are available under private and governmental health insurance plans, including Medicare;

•The ability to establish, maintain and protect intellectual property rights related to our product candidates;

•The entry of generic versions of any of our approved products onto the market;

•The number of products in the same therapeutic class as our product candidates;

•The effect of current and future healthcare laws on our drug candidates;

•The ability to secure favorable managed care formulary positions for our approved product candidates, including federal healthcare program formularies;

•The ability to manufacture commercial quantities of any of our product candidates that receive marketing approval;

•Acceptance of any of our product candidates that receive marketing approval by physicians and other healthcare providers; and

•Potential post‐marketing commitments and post-marketing requirements imposed on an approved product candidate by regulatory authorities, such as patient registries.

If any product candidate is approved but does not achieve an adequate level of acceptance by physicians, hospitals, third‐party payors and patients, we might not generate or derive sufficient revenue from that product candidate and might not become or remain profitable.

We may expend our limited resources to pursue a particular product candidate or indication and fail to capitalize on product candidates or indications that may be more profitable or for which there is a greater likelihood of success. Our near-term focus and reliance on AVTX-009 increases the risk of such exposure.

Given our limited resources, we have prioritized certain product candidates over others at our management’s discretion. We have also de-prioritized development of certain product candidates. We continually evaluate our capital allocation for each product candidate, and, in the future, may de-prioritize or cancel the development of certain product candidates. If the development of our product candidates is unsuccessful or, if successful but the products do not achieve an adequate level of market acceptance, we may no longer have the ability or resources to further develop other product candidates. Our resource allocation decisions may cause us to fail to capitalize on viable commercial products or profitable market opportunities. Our spending on current and future research and development programs and product candidates for specific indications might not yield any commercially viable products. If we do not accurately evaluate the commercial potential or target market for a particular product candidate, we may relinquish valuable rights to that product candidate through collaboration, licensing or other royalty arrangements in cases in which it would have been more advantageous for us to retain sole development and commercialization rights to such product candidate. Our intended near-term focus and reliance on AVTX-009 increases the risk of this exposure.

Our intended near-term focus and reliance on AVTX-009 exposes us to risk if AVTX-009 does not perform in clinical trials or receive FDA approval and market acceptance.

We acquired AVTX-009 in March 2024 and intend to focus our resources in the near-term primarily on AVTX-009. Consequently, our future financial condition and results of operations will be primarily dependent on AVTX-009. Any setback for or failure of AVTX-009 during its planned clinical development could cause material delays in and costs to its further development and commercialization. Any such delays or costs could have a material adverse effect on our financial condition and results of operations and could require us to raise more capital, turn to third-party collaborators to continue the development of AVTX-009 or cease operations. In addition, our near-term focus on AVTX-009 may negatively impact the planned development of our other product candidates.

While we believe that we have adequately completed our due diligence on AVTX-009, drug development is unpredictable and we could encounter toxicity, safety, adverse reactions or other concerns with AVTX-009 as we continue its development.

We will need to negotiate clinical trial and clinical supply arrangements with third parties for the development of AVTX-009. If we experience difficulty in those negotiations, it could delay the development of AVTX-009 as well as add to the expected cost of that development. We might not be successful in negotiating such arrangements on acceptable terms or at all.

The development of AVTX-009 will be subject to all of the risks inherent in drug development that we face with our current product candidates. There can be no assurances that we will successfully develop AVTX-009.

Risks Related to Regulatory Approval of Our Product Candidates

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The marketing approval processes of the FDA and other regulatory authorities are lengthy, time‐consuming, costly and inherently unpredictable. Our inability to obtain regulatory approval for our product candidates would substantially harm our business.

The time required to develop and to obtain approval from regulatory authorities to market a new drug is unique to each product. It typically takes many years in nonclinical and clinical development and depends upon numerous factors. In addition, regulatory guidance, laws and regulations as well as interactions with regulatory authorities may change the course of development for a product candidate. Further, the type and amount of preclinical and clinical data necessary to gain approval may change during the course of product candidates development and may vary among countries. We have not obtained regulatory approval for any product candidate and it is possible that none of our existing product candidates or any future product candidates will ever obtain regulatory approval. Submission of an NDA or BLA to the FDA (i.e., for new indications, dosing regimen, etc.) requires an application fee. The filing of an NDA or BLA for any of our product candidates may be delayed due to our lack of financial resources to pay such user fee.

Our product candidates could fail to receive regulatory approval from the FDA or a other regulatory authorities for many reasons, including:

•The FDA or other regulatory authorities may disagree on the design or conduct of our key Phase 2 and pivotal phase 3 clinical trials, including the overall study design, primary and secondary endpoints, number of patients, statistical analysis plan, or our proposed product indication. For instance, the FDA may find that the study designs we are utilizing in a planned clinical trial do not support an adequate and well‐controlled study supportive of approval. The FDA also might not agree with the proposed quality of life scales and other evaluation tools that we may use in a clinical trial to assess the efficacy of a product candidate;

•The FDA or other regulatory authorities may disagree with our development plans, specifically the number of studies and types of studies planned to support approval for each product and indication;

•Our failure to demonstrate to the satisfaction of the FDA or other regulatory authorities that a product candidate is safe and effective for each proposed indication;

•Our clinical trials may fail to meet statistical significance required for a positive study;

•We may fail to demonstrate that a product candidate’s benefits outweigh its risks;

•The FDA or other regulatory authorities may disagree with our interpretation of data from preclinical studies or clinical trials;

•Data collected from clinical trials of our product candidates may be insufficient to support the submission of a marketing application, other submission or to obtain marketing approval, and the FDA or other regulatory authority may require additional studies to show a product candidate is safe and/or effective;

•We may fail to obtain approval of the manufacturing processes or facilities of third‐party manufacturers with whom we contract for clinical and commercial supplies; or

•There may be changes in precedence, regulatory guidance, laws and regulations that render our preclinical and clinical data insufficient for approval.

The FDA or other regulatory authority may require more information, including additional preclinical or clinical studies to support approval, which may delay or prevent approval and our commercialization plans, or we may decide to abandon the development program. This lengthy approval process, as well as the unpredictability of future clinical trial results, may result in our failing to obtain approval to market our product candidates, which would significantly harm our business, results of operations and prospects. In addition, even if we were to obtain approval, regulatory authorities may approve any or all of our product candidates for fewer or more limited indications than we request, may require that contraindications, warnings or precautions be included in the product labeling, including a black‐box warning, may grant approval with a requirement of post‐marketing clinical trials or other post‐market requirements, or post-marketing commitments or may approve a product candidate with a label that does not include the labeling claims necessary or desirable for the successful commercialization of that product candidate. Any of the foregoing scenarios could materially harm the commercial prospects for our product candidates.

Even if we complete the necessary clinical trials, we cannot predict when or if we will obtain marketing approval to commercialize a product candidate or the approval may be for a narrower indication than we expect.

We cannot commercialize a product candidate until the appropriate regulatory authorities have reviewed and approved the product candidate. Even if our product candidates demonstrate safety and efficacy in clinical trials, regulatory agencies might not complete their review processes in a timely manner, or we might not be able to obtain marketing approval. Additional delays may result if the FDA or other regulatory authority, or an FDA Advisory Committee recommends non‐approval or restrictions on approval. In addition, we may experience delays or rejections based upon additional government regulation from future legislation or administrative action, or changes in regulatory agency policy during the period of product development, clinical trials and the review process. Further, regulatory agencies may not approve the labeling claims that are necessary or desirable for the successful commercialization of our product candidates. Regulatory authorities may approve a product candidate for fewer or more limited indications than requested, may

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impose significant limitations in the form of narrow indications, warnings, including black‐box warnings, precautions or contra‐indications with respect to conditions of use, additional adverse reactions information or may grant approval subject to the performance of post‐marketing clinical trials or other post‐marketing requirements, including a REMS. Our drugs, if approved, may be required to carry warnings comparable to this and other class‐wide warnings. Any of the foregoing scenarios could materially harm the commercial prospects for our product candidates.

Even if our product candidates receive marketing approval, we will still be subject to ongoing regulatory obligations and continued regulatory review, which may result in significant additional expense. Additionally, our product candidates, if approved, could be subject to labeling and other restrictions and market withdrawal and we may be subject to administrative sanctions or penalties if we fail to comply with regulatory requirements or experience unanticipated problems with our products.

Even if we obtain marketing approval for a product candidate, we would be subject to ongoing requirements by the FDA and other regulatory authorities governing the manufacturing, quality control, further development, labeling, packaging, storage, distribution, safety surveillance, import, export, advertising, promotion, recordkeeping and annual reporting of safety and other post‐market information. The FDA and other regulatory authorities will continue to closely monitor the safety profile of any product even after approval. If the FDA or other regulatory authorities become aware of new safety information after approval of any of our product candidates, they may withdraw approval, require labeling changes or establishment of a REMS or similar strategy, 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 addition, any marketing approvals that we obtain for our product candidates may be subject to limitations on the approved indicated uses for which the product may be marketed or to the conditions of approval or contain requirements for potentially costly post‐marketing testing and other requirements, including Phase 4 clinical trials, imposition of a REMS and surveillance to monitor the safety and efficacy of the product candidate.

In addition, manufacturers of drug products and their facilities, including contracted facilities, are subject to periodic inspections by the FDA and other regulatory authorities for compliance with cGMP regulations and standards. If we or a regulatory agency discover previously unknown problems with the facility where the product is manufactured, we may be subject to reporting obligations and a regulatory agency may impose restrictions on that product, the manufacturing facility, us, or our suppliers, including requesting recalls or withdrawal of the product from the market or suspension of manufacturing. If we, our product candidates, our contractors, the manufacturing facilities for our product candidates or others working on our behalf fail to comply with applicable regulatory requirements, either before or after marketing approval, a regulatory agency may:

•Issue Warning Letters, Untitled Letters, or FDA Form 483s, all of which document compliance issues identified by the FDA;

•Mandate modifications to promotional materials or labeling, or require us to provide corrective information to healthcare practitioners;

•Require us to enter into a consent decree, which can include imposition of various fines, reimbursements for inspection costs, required due dates for specific actions and penalties for noncompliance;

•Seek an injunction or impose civil or criminal penalties or monetary fines, restitution or disgorgement, as well as imprisonment;

•Suspend or withdraw marketing approval;

•Suspend or terminate any ongoing clinical studies;

•Refuse to approve pending applications or supplements to applications filed by us;

•Debar us from submitting marketing applications, exclude us from participation in federal healthcare programs, require a corporate integrity agreement or deferred prosecution agreements, debar us from government contracts and refuse future orders under existing contracts;

•Suspend or impose restrictions on operations, including restrictions on marketing, distribution or manufacturing of the product, or the imposition of costly new manufacturing requirements or use of alternative suppliers; or

•Seize or detain products, refuse to permit the import or export of products, or request that we initiate a product recall.

The occurrence of any event or penalty described above may inhibit our ability to continue our development programs, commercialize our products and generate revenue.

Advertising and promotion of any product candidate that obtains approval in the United States will be heavily scrutinized by the FDA and other federal agencies, state attorneys general and the public. While the FDA does not restrict physicians from prescribing approved drugs for uses outside of the drugs’ approved labeling, known as off‐label use, pharmaceutical manufacturers are strictly prohibited from promoting and marketing their products for such uses. Violations, including promotion of products for off‐label uses, are subject to enforcement letters, inquiries, investigations, civil and criminal sanctions by the government, corporate integrity agreements, deferred prosecution agreements, debarment from government contracts and refusal of future orders under existing

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contracts, and exclusion from participation in federal healthcare programs. Additionally, other regulatory authorities will heavily scrutinize advertising and promotion of any product candidate that obtains approval outside of the United States.

In the United States, engaging in the impermissible promotion of any products for off‐label uses can also subject a company to false claims litigation under federal and state statutes, which can lead to civil and criminal penalties and fines, debarment from government contracts and refusal of future orders under existing contracts, deferred prosecution agreements, and corporate integrity agreements with governmental authorities that materially restrict the manner in which a company promotes or distributes drug products. These false claims statutes include the federal civil False Claims Act, which allows any individual to bring a lawsuit against a pharmaceutical company on behalf of the federal government alleging submission of false or fraudulent claims, or causing to present such false or fraudulent claims, for payment by a federal program such as Medicare or Medicaid. If the government decides to intervene and prevails in the lawsuit, the individual will share in any fines or settlement funds. If the government does not intervene, the individual may proceed on his or her own. Since 2004, these False Claims Act lawsuits against pharmaceutical companies have increased significantly in volume and breadth, leading to several substantial civil and criminal settlements, such as settlements regarding certain sales practices promoting off‐label drug uses involving significant fines. This growth in litigation has increased the risk that a pharmaceutical company will have to defend a false claim action, pay settlement fines or restitution, agree to comply with burdensome reporting and compliance obligations, and be excluded from Medicare, Medicaid and other federal and state healthcare programs. If we do not lawfully promote our approved products, we may become subject to such litigation and, if we do not successfully defend against such actions, those actions may have a material adverse effect on our business, financial condition, results of operations and prospects.

The FDA’s or other regulatory authorities policies may change, and additional government guidance, laws and regulations may be enacted that could prevent, limit or delay marketing approval, and the sale and promotion of our product candidates. If we are slow or unable to adapt to changes in existing requirements or the adoption of new requirements or policies, or if we are not able to maintain regulatory compliance, we may lose any marketing approval that we may have obtained, which would adversely affect our business, prospects and ability to achieve or sustain profitability.

If we are unable to obtain, or are delayed in obtaining, state regulatory licenses for the distribution of our products, we would not be able to sell our product candidates in such states.

Most states require manufacturer and/or wholesaler licenses for the sale and distribution of drugs into that state. The application process is complicated, time consuming, costly and requires dedicated personnel or a third party to oversee and manage. If we are delayed in obtaining these state licenses, or denied the licenses, even with FDA approval, we would not be able to sell or ship product into that state which would adversely affect our sales and revenues.

We intend to conduct clinical trials for certain of our product candidates at sites outside the United States, and the FDA might not accept data from trials conducted in such locations.

We intend to conduct one or more of our clinical trials outside the United States. Although the FDA may accept data from clinical trials conducted outside the United States, acceptance of this data is subject to certain conditions imposed by the FDA. Generally, the patient population for any clinical trials conducted outside of the United States must be representative of the population for whom we intend to seek approval in the United States and the data must be applicable to the U.S. population and medical practice in ways that the FDA deems clinically meaningful. In addition, while these clinical trials are subject to the applicable local laws, FDA acceptance of the data will be dependent upon its determination that the trials also complied with all applicable U.S. laws and regulations. There can be no assurance that the FDA will accept data from trials conducted outside of the United States. If the FDA does not accept the data from any of our clinical trials that we decide to conduct outside the United States, it would likely result in the need for additional trials, which would be costly and time‐consuming and delay or permanently halt our development of the product candidate. In addition, any clinical trials outside of the United States might be subject to delays and risks surrounding geopolitical events.

Our failure to obtain regulatory approval in international jurisdictions would prevent us from marketing our product candidates outside the United States, which would limit our market opportunities and adversely affect our business.

In order to market and sell our products in other jurisdictions, we must be granted approval and comply with numerous and varying regulatory requirements. The approval procedure varies among countries and can involve additional testing. The time required to obtain approval may differ substantially from that required to obtain FDA approval. The regulatory approval process outside the United States generally includes all of the risks associated with obtaining FDA approval. In addition, in many countries outside the United States, we must secure product reimbursement approvals before regulatory authorities will approve the product for sale in that country. Obtaining foreign regulatory approvals and compliance with foreign regulatory requirements could result in significant delays, difficulties and costs for us and could delay or prevent the introduction of our products in certain countries. Further, clinical

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trials conducted in one country might not be accepted by regulatory authorities in other countries. If we fail to comply with the regulatory requirements in international markets and receive applicable marketing approvals, our target market will be reduced and our ability to realize the full market potential of our product candidates will be harmed and our business will be adversely affected. We might not obtain foreign regulatory approvals on a timely basis, if at all. Approval by the FDA does not ensure approval by regulatory authorities in other countries or jurisdictions. Approval by one regulatory authority outside the United States does not ensure approval by regulatory authorities in other countries or jurisdictions or by the FDA. Also, regulatory approval for any of our product candidates may be withdrawn. The failure to obtain approval in one jurisdiction may negatively impact our ability to obtain approval in another jurisdiction. Our failure to obtain approval of any of our product candidates by regulatory authorities in another country may significantly diminish the commercial prospects of that product candidate and our business prospects could decline.

Risks Related to the Commercialization of Our Product Candidates

We might not be successful in our efforts to develop and commercialize our product candidates.

Our continued development of our product candidates will be dependent on receiving positive data that, in our judgment, merits advancing such programs. Even if we are successful in continuing to build and expand our pipeline, the product candidates that we identify might not be suitable for clinical development and commercialization, including as a result of being shown to have harmful side effects or other characteristics that indicate that they are unlikely to receive marketing approval and achieve market acceptance. Similarly, even if the FDA accepts our INDs, there is no guarantee that we will be successful in our efforts to advance our product candidates through development, or if approved, to commercialization.

If we obtain approval to commercialize our product candidates outside of the United States, a variety of risks associated with international operations could materially adversely affect our business.

If any of our product candidates are approved for commercialization, we may enter into agreements with third parties to market them on a worldwide basis or in more limited geographical regions. We expect that we would be subject to additional risks related to entering into international business relationships, including:

•Different regulatory requirements for approval, advertising and promotion of drugs in foreign countries;

•Challenges enforcing our contractual and intellectual property rights, especially in those foreign countries that do not respect and protect intellectual property rights to the same extent as the United States;

•Foreign reimbursement, pricing and insurance regimes;

•Unexpected changes in tariffs, trade barriers and regulatory requirements;

•Economic weakness, including inflation, or political instability in particular foreign economies and markets;

•Compliance with tax, employment, immigration and labor laws for employees living or traveling abroad;

•Foreign currency fluctuations, which could result in increased operating expenses and reduced revenues, and other obligations incident to doing business in another country;

•Foreign taxes;

•Difficulties staffing and managing foreign operations;

•Workforce uncertainty in countries where labor unrest is more common than in the United States;

•Potential liability under the FCPA or comparable foreign regulations;

•Production shortages resulting from any events affecting raw material supply or manufacturing capabilities abroad; and

•Business interruptions resulting from geopolitical actions, including war and terrorism, natural disasters, including earthquakes, typhoons, floods and fires, or pandemics.

These and other risks associated with any future international operations could materially adversely affect our ability to attain or maintain profitable operations.

Even if we commercialize any of our product candidates, these products may become subject to unfavorable third‐party coverage and reimbursement policies, healthcare reform initiatives, or pricing regulations, any of which could negatively impact our business.

Our ability to commercialize any product candidates successfully will depend in part on the extent to which coverage and adequate reimbursement for these product candidates will be available from government authorities, private health insurers, health maintenance organizations and other entities. These third‐party payors determine which medications they will cover and establish reimbursement levels, and increasingly attempt to control costs by limiting coverage and the amount of reimbursement for particular medications. Several third‐party payors require drug companies to provide them with predetermined discounts from list prices, and use preferred drug lists to leverage greater discounts in competitive classes. In addition, federal programs impose penalties on drug manufacturers in

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certain instances, in the form of mandatory additional rebates and/or discounts, which can be substantial, and could impact our ability to raise commercial prices. We cannot be sure that coverage and reimbursement will be available for any product candidate that we commercialize and, if coverage is available, what the level of reimbursement will be. Coverage and reimbursement may impact the demand for, or the price of, any product candidate for which we obtain marketing approval. If coverage and reimbursement are not available or available only to limited levels, we might not successfully commercialize any product candidate for which we obtain marketing approval.

There may be significant delays in obtaining coverage and reimbursement for newly approved drugs, and coverage may be more limited than the purposes for which the drug is approved by the FDA or other regulatory authorities. Moreover, eligibility for coverage and reimbursement does not imply that a drug will be paid for in all cases or at a rate that covers our costs, including research, development, manufacture, sale and distribution. Interim reimbursement levels for new drugs, if applicable, may also not be sufficient to cover our costs and may only be temporary. Reimbursement rates for a drug may vary according to the clinical setting in which it is used and may be based on reimbursement levels already set for lower cost drugs and may be incorporated into existing payments for other services. Prices paid for a drug also vary depending on the class of trade. Prices charged to government customers are subject to price controls and private entities obtain discounts through group purchasing organizations. Net prices for drugs may be further reduced by mandatory discounts or rebates required by government healthcare programs and demanded by private payors, and by any future relaxation of laws that presently restrict imports of drugs from countries where they may be sold at lower prices than in the United States. Our inability to promptly obtain coverage and profitable reimbursement rates from both government‐funded and private payors for any approved products that we develop could have a material adverse effect on our operating results, our ability to raise capital needed to commercialize product candidates and our overall financial condition.

Moreover, the regulations that govern pricing, coverage and reimbursement for new drug products abroad vary widely from country to country. Current and future U.S. or foreign legislation may significantly change the pricing, coverage and reimbursement in ways that could involve additional costs and cause delays in obtaining approvals. Adverse pricing limitations may hinder our ability to recoup our investment in one or more product candidates even if our product candidates obtain marketing approval.

Product liability lawsuits against us could cause us to incur substantial liabilities and limit commercialization of any product candidates that we may develop.

We face an inherent risk of product liability exposure related to the testing of our product candidates in human clinical trials and related to the commercial sale of any approved products. Product liability claims may be brought against us by subjects enrolled in our clinical trials, patients, healthcare providers or others using, administering or selling our product candidates or any approved product. For example, we may be sued if any product candidate we test or, if approved, sell allegedly causes injury or is found to be otherwise unsuitable during product testing, manufacturing, marketing or sale. Any such product liability claims may include allegations of defects in manufacturing, defects in design, a failure to warn of dangers inherent in the product, negligence, strict liability and a breach of warranties. Claims could also be asserted under state consumer protection acts. If we cannot successfully defend ourselves against claims that our product candidates or products caused injuries, we could incur substantial liabilities. Regardless of merit or eventual outcome, liability claims may result in:

•Decreased demand for any product candidates or approved products;

•Termination of clinical trial sites or entire trial programs;

•Injury to our reputation and significant negative media attention;

•Withdrawal of clinical trial participants;

•Significant costs to defend the related litigation;

•Substantial monetary awards to trial subjects or patients;

•Loss of revenue;

•Product recalls, withdrawals or labeling, marketing or promotional restrictions;

•Diversion of management and scientific resources from our business operations;

•The inability to commercialize any product candidates that we may develop; and

•A decline in our stock price.

We currently hold product and clinical trial liability insurance coverage, but it might not adequately cover all liabilities that we incur. We might not be able to maintain clinical trial insurance coverage at a reasonable cost or in an amount adequate to satisfy any liability that may arise. We also maintain insurance coverage for our commercially available products, which might not adequately cover all liabilities that we may incur. We might not be able to maintain insurance coverage for our product candidates and our approved products at a reasonable cost or in an amount adequate to satisfy any liability that may arise. Large judgments have been awarded in class action lawsuits based on drugs that had unanticipated side effects. A product liability claim or series of claims brought against us,

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whether or not successful, but particularly if judgments exceed our insurance coverage, could decrease our cash and adversely affect our reputation and business.

If, in the future, we are unable to establish sales, marketing and distribution capabilities or enter into licensing or collaboration agreements for these purposes, we might not be successful in commercializing our product candidates.

We do not currently have a sales or marketing infrastructure. To develop our internal sales, distribution and marketing capabilities for product candidates, we will have to invest significant financial and management resources, some of which will be committed prior to any confirmation that any product candidates will be approved. For product candidates for which we decide to perform sales, marketing and distribution functions ourselves, we could face a number of additional risks, including:

•Our inability to recruit and retain adequate numbers of effective sales and marketing personnel;

•Inability of marketing personnel to develop effective marketing materials;

•The inability of sales personnel to obtain access to physicians or educate adequate numbers of physicians on the clinical benefits of our products to achieve market acceptance;

•The lack of complementary products to be offered by sales personnel, which may put us at a competitive disadvantage relative to companies with more extensive product lines;

•The costs associated with training sales personnel on legal compliance matters and monitoring their actions;

•Liability for sales personnel failing to comply with applicable legal requirements; and

•Unforeseen costs and expenses associated with creating an independent sales and marketing organization.

Where and when appropriate, we may elect to utilize contract sales forces or strategic partners to assist in the commercialization of our product candidates. If we enter into arrangements with third parties to perform sales, marketing and distribution services for our products, the resulting revenues or the profitability from these revenues to us are likely to be lower than if we had sold, marketed and distributed our products ourselves. In addition, we might not be successful in entering into arrangements with third parties to sell, market and distribute our product candidates or may be unable to do so on terms that are favorable to us. We likely will have little control over such third parties, and any of these third parties may fail to devote the necessary resources and attention to sell, market and distribute our products effectively. Such third parties may also not comply with the applicable regulatory requirements, which could potentially expose us to regulatory and legal enforcement actions.

Risks Related to Our Dependence on Third Parties

We rely on third parties to conduct and monitor our clinical trials. The failure of these third parties to successfully carry out their contractual duties or meet expected deadlines could substantially harm our business because we might not obtain marketing approval for or commercialize our product candidates in a timely manner or at all.

We rely upon third‐party CROs to monitor and manage data for our clinical programs. We rely on these parties for execution of our clinical trials and, while we have agreements governing their activities, we have limited influence over their actual performance and control only certain aspects of their activities. Nevertheless, we are responsible for ensuring that each of our studies is conducted in accordance with the applicable protocol, legal, regulatory and scientific standards, and our reliance on the CROs does not relieve us of our regulatory responsibilities. We, our clinical trial sites, and our CROs are required to comply with GCP requirements, which are regulations and guidelines enforced by the FDA that govern clinical trials. Similar requirements are imposed by comparable foreign regulatory authorities for all of our product candidates in clinical development. Regulatory authorities enforce these GCP requirements through periodic inspections of trial sponsors, principal investigators and trial sites. If we, any of our CROs or clinical trial sites fail to comply with applicable GCP requirements, the clinical data generated in our clinical trials may be deemed unreliable and the FDA or other regulatory authorities may require us to perform additional clinical trials before approving our marketing applications, if at all. In addition, we are required to report certain financial interests of our third‐party investigators if these relationships exceed certain financial thresholds or meet other criteria. The FDA or comparable foreign regulatory authorities may question the integrity of the data from those clinical trials conducted by principal investigators who previously served or currently serve as scientific advisors or consultants to us from time to time and receive cash compensation in connection with such services or otherwise receive compensation from us that could be deemed to impact study outcome, proprietary interests in a product candidate, certain company equity interests, or significant payments of other sorts. We cannot assure you that upon inspection by a given regulatory authority, such regulatory authority will determine that any of our clinical trials comply with GCP requirements. In addition, we must conduct our clinical trials with product produced under applicable cGMP requirements for drug manufacturing. Failure to comply with these regulations may require us to repeat preclinical and clinical trials, which would delay the marketing approval process.

Our CROs and clinical trial site personnel are not our employees, and, except for remedies available to us under our agreements with such CROs and clinical trial sites, we cannot control whether they devote sufficient time and resources to our ongoing clinical,

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nonclinical and preclinical programs. These CROs and clinical trial sites may also have relationships with other commercial entities, including our competitors, for whom they may also be conducting clinical trials or other drug development activities that could harm our competitive position. If CROs or clinical trial sites do not successfully carry out their contractual duties or obligations or meet expected deadlines, or if the quality or accuracy of the clinical data they obtain is compromised due to the failure to adhere to our clinical protocols, regulatory requirements or for other reasons, our clinical trials may be extended, delayed or terminated and we might not be able to obtain marketing approval for or successfully commercialize our product candidates or we may be subject to regulatory enforcement actions. As a result, our results of operations and the commercial prospects for our product candidates would be harmed, our costs could increase and our ability to generate revenues could be delayed. To the extent we are unable to successfully identify and manage the performance of third‐party service providers in the future, our business may be adversely affected.

Switching or adding CROs involves substantial cost and requires extensive management time and focus. In addition, there is a natural transition period when a new CRO commences work. As a result, delays occur, which can materially impact our ability to meet our desired clinical development timelines. Though we carefully manage our relationships with our CROs, there can be no assurance that we will not encounter similar challenges or delays in the future or that these delays or challenges will not have a material adverse impact on our business, prospects, financial condition and results of operations.

We use third parties to manufacture all of our product candidates. This may increase the risk that we will not have sufficient clinical or commercial quantities of our product candidates or such quantities at an acceptable cost, which could result in the delay, prevention, or impairment of clinical development and commercialization of our product candidates.

We do not own or operate, and have no plans to establish, any manufacturing facilities for our product candidates. We have limited personnel with experience in drug manufacturing and we lack the resources and the capabilities to manufacture any of our product candidates on a clinical or commercial scale.

We currently outsource all manufacturing of our product candidates to third parties typically without any guarantee that there will be sufficient supplies to fulfill our requirements or that we may obtain such supplies on acceptable terms. Any delays in obtaining adequate supplies with respect to our product candidates may delay the development or commercialization of our other product candidates.

In addition, we do not currently have agreements with all third‐party manufacturers for the long‐term commercial supply of our product candidates. We may be unable to enter agreements for commercial supply with third‐party manufacturers, or may be unable to do so on acceptable terms. Even if we enter into these agreements, the various manufacturers of each product candidate will likely be single source suppliers to us for a significant period of time.

AVTX US Equity

AVTX · 10-K · period ended 2023-12-31

Item 1. Business.

Item 1A. Risk Factors.

AVTX US Equity☆

AVTX · 10-K · period ended 2023-12-31

Item 1. Business.

Item 1A. Risk Factors.

AVTX US Equity