Amendment: SEC Form 10-K/A filed by Tempest Therapeutics Inc.

EXPLANATORY NOTE

Tempest Therapeutics, Inc. (the “Company”) is filing this Amendment No. 1 to its Annual Report on Form 10-K (“Amendment”), originally filed with the Securities and Exchange Commission (the “SEC”) on March 27, 2025 (the “Initial Filing”), to (i) include the information required by Items 10 through 14 of Part III of Form 10-K and (ii) amend Item 15 of Part IV of the Initial Filing to update the exhibit list. We are filing this Amendment to include Part III information in our Form 10-K because the Company’s definitive proxy statement will not be filed within 120 days after the end of the fiscal year covered by the Company’s Annual Report on Form 10-K.

In addition, Item 15 of the Initial Filing has also been amended to reflect the filing of the new certifications of its principal executive officer and principal financial officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. Since no new financial statements have been included in this Amendment and this Amendment does not contain or amend any disclosure with respect to Items 307 and 308 of Regulation S-K, paragraphs 3, 4, and 5 of the certifications have been omitted. Because no financial statements are contained within this Amendment, the Company is not including certifications pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

Except as contained herein, this Amendment does not modify or update disclosures contained in the Initial Filing. This Amendment should be read in conjunction with the Company’s other filings made with the SEC subsequent to the date of the Initial Filing.

IMPORTANT NOTE REGARDING THE 2025 REVERSE STOCK SPLIT

In April 2025, following stockholder approval, we effected a one-for-thirteen reverse stock split (“Reverse Stock Split”) of our issued and outstanding common stock. The Reverse Stock Split took effect on April 8, 2025, and our shares began trading on a post-split basis on April 9, 2025. Accordingly, all share and per share amounts for all periods presented in this Amendment have been retroactively adjusted to reflect the Reverse Stock Split. In addition, all equity awards outstanding immediately prior to the Reverse Stock Split were proportionally adjusted.

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TABLE OF CONTENTS

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PART III

ITEM 10. DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE.

BOARD OF DIRECTORS

The following table sets forth information regarding each member of our Board of Directors (the “Board”), including their ages as of March 31, 2025. There are no family relationships among any of our directors.

Stephen Brady

Stephen Brady has served as our Chief Executive Officer and as a member of our Board since June 2021 and as our President since September 2023. Mr. Brady also served as President and Chief Operating Officer of our legacy company from September 2019 until June 2021. Previously, from September 2013 until April 2019, Mr. Brady served in various leadership positions, most recently as Executive Vice President, Strategy and Finance, at Immune Design, Inc., a biopharmaceutical company that was acquired by Merck in 2019. At Immune Design, Mr. Brady led the general and administrative functions at the company, including strategy, corporate development, finance and investor and public relations. Prior to Immune Design, he held roles of increasing responsibility in multiple biopharmaceutical companies, including as Vice President of Corporate Development at Proteolix, where he had primary responsibility for the company’s business development activities and sale to Onyx Pharmaceuticals. Mr. Brady served as a member of the board of directors of Atreca, Inc. from July 2021 to May 2024, and has served as a member of the board of the Biotechnology Innovation Organization (BIO), Emerging Companies Section Governing Board, since 2022. Mr. Brady received a B.A. in English from the University of Oregon, a J.D. from the University of the Pacific and an LL.M. from New York University School of Law. Mr. Brady’s role as our Chief Executive Officer, his business expertise and his prior leadership roles in biotechnology companies provides him with the qualifications and skills to serve as a member of our Board.

Geoff Nichol, M.B., Ch.B., M.B.A.

Geoff Nichol has served as a member of our Board since June 2021, and served as a member of the board of our legacy company December 2019 until June 2021. Dr. Nichol has nearly 30 years’ experience in drug development. Dr. Nichol has served as SVP, Development at AbCellera Biologics, a monoclonal antibody discovery and development company since May 2023. From November 2016 to October 2021, Mr. Nichol served as Chief Medical Officer at BioMarin Pharmaceutical Inc., where he managed an active portfolio of clinical development programs. In October 2021, Dr. Nichol transitioned into a Senior Advisor role until his retirement from Biomarin in April 2023. Prior to Biomarin, Dr. Nichol was Executive Vice President, Research and Development at Sangamo BioSciences from July 2011 to November 2016, where he managed the preclinical development of several IND candidates and Senior Vice President of Development at Medarex, where he was responsible for a portfolio of clinical development programs. Prior to joining Medarex, Dr. Nichol was Vice President at Novartis, where he managed a clinical development therapeutic area, United States Medical Affairs, and Global Project and Portfolio Management. Before Novartis, Dr. Nichol held various positions up to Group Medical Director, Clinical Development at SmithKline Beecham, where he was responsible for anti-infective development and medical affairs. Dr. Nichol received a B.Med.Sc., M.B., Ch.B., or the equivalent of an M.D. in the United States, from Otago University Medical School in New Zealand and an M.B.A. from Warwick University in the United Kingdom. Mr. Nichol’s financial and business expertise, including his background as an executive officer of pharmaceutical and biotechnology companies, provides him with the qualifications and skills to serve as a member of our Board.

Christine Pellizzari

Christine Pellizzari has served as a member of our Board since July 2021. Ms. Pellizzari has served as the Principal of CAP Strategic Advisory Services since May 2024, and previously served as the Chief Legal and Human Resources Officer of Science 37 Holdings, Inc. (Science 37) from July 2021 to May 2024. Ms. Pellizzari has served as a director and member of audit committee of Imunon, Inc. (formerly Celsion Corporation) since June 2021 and a director and member of the audit and compensation committees of Neurosense Therapeutics Ltd. since December 2021. Ms. Pellizzari served as Chief Legal Officer of Insmed, Inc. from 2018 to 2021 and prior to that as the General Counsel and Corporate Secretary from 2013 to 2018. Prior to joining Insmed,

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Ms. Pellizzari held various legal positions of increasing responsibility at Aegerion Pharmaceuticals, Inc., most recently as Executive Vice President, General Counsel and Secretary. Prior to Aegerion, Ms. Pellizzari served as Senior Vice President, General Counsel and Secretary of Dendrite International, Inc. Ms. Pellizzari joined Dendrite from the law firm of Wilentz, Goldman & Spitzer where she specialized in health care transactions and related regulatory matters. She previously served as law clerk to the Honorable Reginald Stanton, Assignment Judge for the Superior Court of New Jersey. Ms. Pellizzari received her B.A. from the University of Massachusetts, Amherst and her J.D. from the University of Colorado, Boulder. Ms. Pellizzari’s legal, financial and business expertise in the biotechnology industry, including her experience in the capital markets and financial and legal compliance, qualifies her to serve as a member of our Board.

Ronit Simantov, M.D.

Ronit Simantov, M.D. has served as member of our Board since August 2021. Dr. Simantov has served as Chief Medical Officer of Gamida Cell Ltd. since July 2017 and as the Chief Scientific Officer since July 2021. From July 2021 to July 2023, Dr. Simantov served as a member of the board of directors of Clovis Oncology, Inc. Prior to joining Gamida Cell, Dr. Simantov served as Vice President, Oncology Global Medical Affairs at Pfizer Inc., where she was responsible for multiple oncology programs in various roles. Prior to Pfizer, Dr. Simantov served as Vice President of Clinical Research at OSI Pharmaceuticals, as Chief Medical Officer at CuraGen Corporation (acquired by Celldex) where she led development of small molecules and antibody-drug conjugates, and at Bayer HealthCare Pharmaceuticals, where she led the Phase 3 study of Nexavar^® (sorafenib) resulting in the first approval of a tyrosine kinase inhibitor in renal cell carcinoma. Prior to joining industry, Dr. Simantov spent seven years on the academic faculty at Weill Medical College of Cornell University, where she directed the fellowship program and conducted angiogenesis and vascular biology research. She has authored over 40 peer-reviewed manuscripts. Dr. Simantov holds an M.D. from New York University School of Medicine and a B.A. from Johns Hopkins University. She completed a residency in internal medicine at New York Hospital Cornell Medical Center, and a fellowship in hematology and oncology at Weill Cornell Medicine. Dr. Simantov’s extensive clinical and scientific experience provides her with the qualifications and skills to serve as a member of our Board.

Michael Raab

Michael Raab has served as a member and as Chairman of our Board since June 2021, and served as a member and Chairman of the board of directors of our legacy company from December 2018 until June 2021. Mr. Raab has served as Ardelyx Inc.’s President and Chief Executive Officer since March 2009 and as a member of the board of directors since 2008. Before Ardelyx, Mr. Raab was a partner at New Enterprise Associates (“NEA”), where he focused on the biotechnology and pharmaceutical sectors. Prior to joining NEA, Mr. Raab spent 15 years in commercial and operating leadership roles in the biotech and pharmaceutical industries, including serving as Senior Vice President, Therapeutics and General Manager of the Renal Division at Genzyme Corporation, or Genzyme, a biotechnology company. Mr. Raab also spent two years with Genzyme’s diagnostic products and services division. Before Genzyme, Mr. Raab held business development and sales and marketing positions at Repligen Corporation, a life sciences company, and Bristol-Myers Corporation. Mr. Raab has been the lead independent director of Amicus Therapeutics, Inc. since 2004. Mr. Raab received his B.A. from DePauw University. Mr. Raab’s industry and investment experience qualifies him to serve as a member of our Board.

EXECUTIVE OFFICERS

The following table sets forth information regarding our executive officers who are not listed above as a member of our board of directors, including their ages as of March 31, 2025. There are no family relationships among any of our executive officers.

Samuel Whiting, M.D., Ph.D.

Dr. Whiting has served as our Executive Vice President and Chief Medical Officer since November 2020. Prior to joining us, Dr. Whiting served as Senior Vice President of Clinical Development at Calithera Biosciences, a clinical-stage biotech company focused on developing treatments for cancer and other life-threatening diseases, from January 2019 to November 2020, and as Vice President, Clinical Development, from May 2016 to December 2018. Before Calithera, Dr. Whiting served as Vice President of Research and Clinical Development at Gradalis and worked in development of small molecule targeted and immuno-

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oncology agents at VentiRx Pharmaceuticals and Oncothyreon. Prior to joining industry, Dr. Whiting served as Assistant Professor of Medical Oncology at the University of Washington, Assistant Member of Clinical Research at the Fred Hutchinson Cancer Research Center, and Clinical Head of Gastrointestinal Oncology at the Seattle Cancer Care Alliance. Dr. Whiting completed fellowship training in medical oncology at the Fred Hutchinson Cancer Research Center. His training in internal medicine was through the ABIM Research Pathway at the University of Washington. Dr. Whiting received his B.S. with Honors in Chemistry from Lewis and Clark College and his M.D. and Ph.D. in the Medical Scientist Training Program at the University of Washington.

Nicholas Maestas

Mr. Maestas has served as our Chief Financial Officer and Head of Corporate Strategy since January 2025, having previously served as Vice President, Finance and Strategy from July 2021 through December 2024, and has served as our Corporate Secretary since September 2022. Prior to joining us, Mr. Maestas served as the head of FP&A and strategic finance at Alector, a biopharmaceutical company that develops therapies for the treatment of neurodegeneration diseases, from July 2019 to July 2021. Prior to joining Alector, from November 2014 to July 2019, Mr. Maestas served in a variety of roles at Immune Design, an oncology immunotherapy company that was acquired by Merck & Co in 2019, including as Senior Director, Corporate Development & Operations from January to July 2019 and Director, Corporate Development & Operations from January 2017 to December 2018. Mr. Maestas received a B.A. in Molecular and Cell Biology from the University of California, Berkeley and an M.B.A from The Wharton School, University of Pennsylvania.

CORPORATE GOVERNANCE

Audit Committee

The Board has a separately designated Audit Committee (the “Audit Committee”) established in accordance with Section 3(a)(58)(A) of the Exchange Act to oversee the Company’s corporate accounting and financial reporting processes and audits of its financial statements. Geoff Nichol, Christine Pellizzari and Michael Raab, served as members of the Audit Committee during 2024 with Ms. Pellizzari serving as Chair. The Board determined that each member of the Audit Committee satisfies the independence requirements under Nasdaq listing standards and Rule 10A-3(b)(1) of the Exchange Act. Our Board has determined that Ms. Pellizzari is an “audit committee financial expert” within the meaning of SEC regulations. Each member of the Audit Committee can read and understand fundamental financial statements in accordance with applicable requirements. In arriving at these determinations, our Board has examined each Audit Committee member’s scope of experience and the nature of their employment.

The primary purpose of the Audit Committee is to discharge the responsibilities of the Board with respect to the corporate accounting and financial reporting processes, systems of internal control and financial statement audits, and to oversee the independent registered public accounting firm.

Code of Business Conduct and Ethics

We have adopted a Code of Business Conduct that applies to all officers, directors and employees. If we ever were to amend or waive any provision of our Code of Conduct that applies to our principal executive officer, principal financial officer, principal accounting officer or any person performing similar functions, we intend to promptly disclose on our website (i) the date and nature of any amendment (other than technical, administrative or other non-substantive amendments) to the Code of Conduct that relates to any element of the code of ethics definition enumerated in Item 406(b) of Regulation S-K and (ii) the nature of any waiver, including an implicit waiver, from a provision of the Code of Conduct that is granted to one of these specified individuals that relates to one or more of the elements of the code of ethics definition enumerated in Item 406(b) of Regulation S-K, the name of such person who is granted the waiver and the date of the waiver. The full text of our Code of Conduct is available at the investors section of our website at www.tempesttx.com. The reference to our website address does not constitute incorporation by reference of the information contained at or available through our website, and you should not consider it to be a part of this Amendment.

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ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT

SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT

The following table sets forth information regarding beneficial ownership of our common stock as of March 31, 2025, the most recent practicable date for computing beneficial ownership, by:

We have determined beneficial ownership in accordance with the rules of the SEC. These rules generally attribute beneficial ownership of securities to persons who possess sole or shared voting or investment power with respect to those securities. Unless otherwise indicated, the persons or entities identified in this table have sole voting and investment power with respect to all shares shown as beneficially owned by them, subject to applicable community property laws.

Applicable percentage ownership is based on 3,519,602 shares of our common stock issued and outstanding as of March 31, 2025. The number of shares of common stock used to calculate the percentage ownership of each listed person includes the shares of common stock underlying options and warrants held by such persons that are currently exercisable or convertible or will be exercisable or convertible within 60 days of March 31, 2025. However, we did not deem these shares outstanding for the purpose of computing the percentage ownership of any other person. All share figures in the table below give effect to the Reverse Stock Split that became effective April 8, 2025.

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EQUITY COMPENSATION PLAN INFORMATION

The following table summarizes our equity compensation plan information as of December 31, 2024.

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

RELATED PERSON TRANSACTIONS POLICY AND PROCEDURES

We have adopted a written Related Person Transactions Policy that sets forth our policies and procedures regarding the identification, review, consideration and approval or ratification of “related-persons transactions.” For purposes of our policy only, a “related-person transaction” is a transaction, arrangement or relationship (or any series of similar transactions, arrangements or relationships) in which we and any “related person” are participants involving an amount that exceeds or will exceed $120,000 or, during such time as we qualify as a “smaller reporting company,” the lesser of (1) $120,000 or (2) 1% of the average of our total assets for the last two completed fiscal years. Transactions involving compensation for services provided to us as an employee, director, consultant or similar capacity by a related person are not covered by this policy. A related person is any executive officer, director, or a holder of more than 5% of our capital stock, including any of their immediate family members, and any entity owned or controlled by such persons.

CERTAIN RELATED PERSON TRANSACTIONS

Other than compensation arrangements for our directors and executive officers, which are described in the section titled “Executive and Director Compensation,” the following is a description of our related person transactions since January 1, 2023 to which we were a party or will be a party.

INDEMNIFICATION

We have entered into indemnification agreements with each of our current directors and officers. These agreements provide for the indemnification of such persons for all reasonable expenses and liabilities incurred in connection with any action or proceeding brought against them by reason of the fact that they are or were serving in such capacity. We believe that these indemnification agreements are necessary to attract and retain qualified persons as directors and officers. Furthermore, we have obtained director and officer liability insurance to cover liabilities our directors and officers may incur in connection with their services to us.

INDEPENDENCE OF THE BOARD OF DIRECTORS; EXECUTIVE SESSIONS

As required under the Nasdaq Capital Market (“Nasdaq”) listing standards, “independent” directors must comprise a majority of a listed company’s board of directors. In addition, applicable Nasdaq rules require that, subject to specified exceptions, each member of a listed company’s audit committee, compensation committee and nominating and corporate governance committee be independent within the meaning of applicable Nasdaq rules. Audit Committee members must also satisfy the independence criteria set forth in Rule 10A-3 under the Securities Exchange Act of 1934, as amended (the “Exchange Act”).

Our Board undertook a review of the independence of each director and considered whether any director has a material relationship with us that could compromise his or her ability to exercise independent judgment in carrying out his or her responsibilities. As a result of this review, our Board determined that all of our directors, other than Mr. Brady, our Chief Executive Officer and President, qualify as “independent” directors within the meaning of the Nasdaq rules. Accordingly, a majority of our directors are independent, as required under applicable Nasdaq rules. The Board also determined that each member of our Audit, Compensation and Nominating and Corporate Governance Committees satisfies the independence standards for such committees established by the SEC and the Nasdaq listing standards, as applicable.

Our non-employee directors have been meeting, and we anticipate that they will continue to meet, in regularly scheduled executive sessions at which only non-employee directors are present.

ITEM 14. PRINCIPAL ACCOUNTING FEES AND SERVICES.

The following table represents aggregate fees billed to the Company for the fiscal years ended December 31, 2024 and 2023 by Ernst & Young, the Company’s independent registered public accountant. All fees described below were pre-approved by the Audit Committee.

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PRE-APPROVAL POLICIES AND PROCEDURES

The Audit Committee has adopted a pre-approval policy under which the Audit Committee approves in advance all audit and permissible non-audit services to be performed by the independent accountants (subject to a de minimis exception). These services may include audit services, audit-related services, tax services, and other non-audit services. As part of its pre-approval policy, the Audit Committee considers whether the provision of any proposed non-audit services is consistent with the SEC’s rules on auditor independence. In accordance with its pre-approval policy, the Audit Committee has pre-approved certain specified audit and non-audit services to be provided by our independent auditor. If there are any additional services to be provided, a request for pre-approval must be submitted to the Audit Committee for its consideration under the policy. The Audit Committee generally pre-approves particular services or categories of services on a case-by-case basis. Finally, in accordance with the pre-approval policy, the Audit Committee has delegated pre-approval authority to the Chair of the Audit Committee. The Chair must report any pre-approval decisions to the Audit Committee at its next meeting. The Audit Committee has determined that the rendering of services other than audit services by Ernst & Young is compatible with maintaining the principal accountant’s independence.

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PART IV

ITEM 15. EXHIBITS AND FINANCIAL STATEMENT SCHEDULES

We have filed the following documents as part of this Amendment:

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SIGNATURES

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

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