Nature of Organization and Operations

3 Months Ended

Mar. 31, 2025

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Nature of Organization and Operations

Nature of Organization and Operations

Whitehawk Therapeutics, Inc. (the "Company") is an oncology therapeutics company applying advanced technologies to established tumor biology that are intended to efficiently deliver improved cancer treatments. The Company has a deep experience in chemistry, formulation, and drug delivery, as well as research, clinical, and commercial pharmaceutical development, and taking product candidates from the clinic to approval, launch, and commercialization.

Current ADC Business

On December 19, 2024, the Company entered into an intellectual property license agreement (the “WuXi License Agreement”) with WuXi Biologics (Shanghai FX) Co., Ltd. (“WuXi Biologics”) for the development and global commercialization of a portfolio of three next generation antibody drug conjugates (“ADCs”) targeting clinically validated, broadly overexpressed tumor antigens in high potential cancer indications with significant unmet need. Refer to Note 12 for further information on the WuXi Biologics License Agreement and its terms.

Legacy FYARRO Business.

For the periods presented and through the FYARRO Divestiture (as defined below), the Company's lead drug product was FYARRO® (sirolimus protein-bound particles for injectable suspension (albumin-bound); nab-sirolimus), which combines two established technologies - nanoparticle albumin-bound (nab) technology and the anti-cancer agent, sirolimus. The Company exclusively licensed FYARRO, previously called ABI-009, nab-sirolimus, from Abraxis BioScience, LLC, a wholly owned subsidiary of Celgene Corporation, which is a wholly owned subsidiary of Bristol-Myers Squibb Company (“BMS”). The Company refers to the development, production and commercial sale of FYARRO herein as the “FYARRO Business”. On February 22, 2022, the Company launched FYARRO in the United States for treatment of advanced malignant perivascular epithelioid cell tumor PEComa.

On December 19, 2024, the Company entered into a Stock Purchase Agreement (the “Divestiture Agreement”) with KAKEN INVESTMENTS INC., a Delaware corporation (“KAKEN”), KAKEN PHARMACEUTICAL CO., LTD, and Aadi Subsidiary, Inc., a Delaware corporation and the Company's former wholly owned subsidiary and the operating company for the FYARRO Business (“Aadi Subsidiary”). Under the Divestiture Agreement, KAKEN acquired 100% of the outstanding shares of capital stock of Aadi Subsidiary from the Company for a cash payment of $102.4 million (following applicable purchase price adjustments under the Divestiture Agreement) (the "FYARRO Divestiture"). The FYARRO Divestiture closed on March 25, 2025 and, as a result, the Company no longer operates the FYARRO Business.

Company Name Change.

In connection with the FYARRO Divestiture, the Company changed its name from "Aadi Bioscience, Inc." to "Whitehawk Therapeutics, Inc." and the Company changed its ticker symbol on the Nasdaq Capital Market to "WHWK".

Merger with Aerpio Pharmaceuticals, Inc.

On August 26, 2021 (the “Closing Date”), the Company completed its business combination with Aadi Subsidiary, Inc. (f/k/a Aadi Bioscience, Inc., or “Private Aadi”), in accordance with the terms of the Agreement and Plan of Merger and Reorganization, dated May 16, 2021, by and among the Company, Aspen Merger Subsidiary, Inc. (“Merger Sub”) and Private Aadi (the “Merger Agreement”), pursuant to which Merger Sub merged with and into Private Aadi, with Private Aadi surviving as a wholly owned subsidiary of the Company (the “Reverse Merger”) until the FYARRO Divestiture.

Liquidity

Since inception, the Company has devoted substantially all of its resources to research and development activities, business planning, establishing and maintaining its intellectual property portfolio, hiring personnel, raising capital and providing general and administrative support for these operations. Prior to the FYARRO Divestiture, the Company also realized revenues from the commercial sale of FYARRO.

The Company has experienced net losses since its inception and expects to continue to incur net losses into the foreseeable future. The Company had an accumulated deficit of $259.6 million as of March 31, 2025 and net income of $73.0 million and a net loss of $18.3 million for the three months ended March 31, 2025 and 2024, respectively. The net income recorded as of March 31, 2025 is primarily attributable to the gain on sale related to the FYARRO Divestiture. Prior to the FYARRO Divestiture, these operating losses were funded primarily from outside sources of invested capital through the issuance of convertible promissory notes, grant funding, the sale of securities, and proceeds from license agreements.

The Company had cash, cash equivalents and short-term investments of $231.1 million at March 31, 2025. The Company paid $38.0 million, the balance of the up-front license fee, plus a 6% VAT fee on April 16, 2025 to Wuxi Biologics for the

in-licensing of Mucin-16 (“MUC16”), Protein Tyrosine Kinase 7 (“PTK7”) and Seizure Related 6 Homolog (“SEZ6”) (each an “ADC Therapy,” and collectively, the “ADC Therapies”). Management believes the Company’s cash, cash equivalents and short-term investments will provide sufficient funds to enable the Company to meet its obligations for at least twelve months from the issuance of these financial statements. If the Company is unable to achieve and maintain profitability, it will need additional financing to support its continuing operations and pursue its strategic objectives. Additional financing may be achieved through a combination of equity offerings and debt financing. The Company may be unable to raise additional funds or enter into such other agreements when needed on favorable terms or at all.

On March 17, 2022, the Company entered into a Sales Agreement (the “Sales Agreement”) with Cowen and Company, LLC (“Cowen”), pursuant to which the Company may offer and sell, from time to time at the Company’s sole discretion, shares of its common stock having an aggregate offering price of up to $75.0 million through Cowen as its sales agent for an at-the-marketing-offering. Any sales under the Sales Agreement may result in dilution to existing shareholders. As of March 31, 2025, no shares of common stock had been sold under this Sales Agreement.