Whitehawk Therapeutics, Inc.

Previous wording

The following discussion of our financial condition and results of operations should be read in conjunction with the audited consolidated financial statements and the related notes to those statements thereto appearing elsewhere in this Annual Report on Form 10-K filed with the SEC for the year ending December 31, 2024. Some of the information contained in this discussion and analysis, including information with respect to our plans and strategy for our business, includes forward-looking statements that involve risk, uncertainties and assumptions. Our actual results could differ materially from those discussed in our forward-looking statements for many reasons, including those risks. You should not place undue reliance on these forward-looking statements, which apply only as of the date of this Annual Report. You should read this Annual Report completely, including Part I, Item 1A (Risk Factors) of this Annual Report and the “Forward-Looking Statements” sections of this Annual Report for a discussion of important factors that could cause actual results to differ materially from the results described in or implied by our forward-looking statements contained in the following discussion and analysis. Except as required by law, we assume no obligation to update these forward-looking statements publicly, or to update the reasons actual results could differ materially from those anticipated in these forward-looking statements, even if new information becomes available in the future.

Current wording

The following discussion of our financial condition and results of operations should be read in conjunction with the audited financial statements and the related notes to those statements thereto appearing elsewhere in this Annual Report on Form 10-K filed with the SEC for the year ended December 31, 2025. Some of the information contained in this discussion and analysis, including information with respect to our plans and strategy for our business, includes forward-looking statements that involve risk, uncertainties and assumptions. Our actual results could differ materially from those discussed in our forward-looking statements for many reasons, including those risks. You should not place undue reliance on these forward-looking statements, which apply only as of the date of this Annual Report. You should read this Annual Report completely, including Part I, Item 1A (Risk Factors) of this Annual Report and the “Forward-Looking Statements” sections of this Annual Report for a discussion of important factors that could cause actual results to differ materially from the results described in or implied by our forward-looking statements contained in the following discussion and analysis. Except as required by law, we assume no obligation to update these forward-looking statements publicly, or to update the reasons actual results could differ materially from those anticipated in these forward-looking statements, even if new information becomes available in the future.

Previous wording

References in the following discussion to “we,” “our,” “us,” or“Whitehawk” refer to Whitehawk Therapeutics, Inc. and its subsidiaries.

Current wording

References in the following discussion to “we,” “our,” “us,” or “Whitehawk” refer to Whitehawk Therapeutics, Inc.

Previous wording

We are an oncology therapeutics company applying advanced technologies to established tumor biology that are intended to efficiently deliver improved cancer treatments. We have deep experience in chemistry, formulation, and drug delivery, as well as research, clinical, and commercial pharmaceutical development, successfully taking product candidates from the clinic to approval, launch, and commercialization.

Current wording

We are a clinical-stage oncology therapeutics company applying advanced technologies to established tumor biology that are intended to efficiently deliver improved cancer treatments. We have deep experience in chemistry, formulation, and drug delivery, as well as research, clinical, and commercial pharmaceutical development, successfully taking product candidates from the clinic to approval, launch, and commercialization.

Previous wording

We recently entered into an intellectual property license agreement (the “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. These ADCs are constructed utilizing an advanced linker-payload platform called CPT113 that has been shown to provide high stability in blood circulation and deliver targeted release of a Topoisomerase I (“TOPO1”) inhibitor payload into cancer cells.

Current wording

In December 2024, we entered into an intellectual property license agreement (the “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. These ADCs are constructed utilizing an advanced linker-payload platform called CPT113 that has been shown to provide high stability in blood circulation and deliver targeted release of a Topoisomerase I (“TOP1”) inhibitor payload into cancer cells.

Previous wording

These in-licensed assets originated through the collaborative efforts of WuXi Biologics, a leading global contract research, development and manufacturing organization (“CRDMO”), and Hangzhou DAC Biotechnology (“Hangzhou DAC”), a global leader in ADC innovation, where Hangzhou DAC’s CPT113 linker-payload has been conjugated to novel antibodies developed by WuXi Biologics against three tumor targets: Protein Tyrosine Kinase 7 (“PTK7”), Mucin 16 (“MUC16”) and Seizure-related Protein 6 (“SEZ6”). We believe the resulting ADCs will be able to target cancers expressing these respective tumor markers precisely and deliver the potent, cytotoxic TOPO1 inhibitor at the site of cancer. Each of these ADCs have demonstrated tumor cell binding, tumor cell line cytotoxicity, andin vivo antitumor activity in preclinical models mimicking tumor progression. We refer to these in-licensed ADC assets as the "ADC Therapies" herein.

Current wording

These in-licensed assets originated through the collaborative efforts of WuXi Biologics, a leading global contract research, development and manufacturing organization (CRDMO), and Hangzhou DAC Biotechnology (“Hangzhou DAC”), a global leader in ADC innovation, where Hangzhou DAC’s CPT113 linker-payload has been conjugated to novel antibodies developed by WuXi Biologics against three tumor targets: Protein Tyrosine Kinase 7 (“PTK7”), Mucin 16 (“MUC16”) and Seizure-related Protein 6 (“SEZ6”). We believe the resulting ADCs will be able to target cancers expressing these respective tumor markers precisely and deliver the potent, cytotoxic TOP1 inhibitor at the site of cancer. Each of these ADCs have demonstrated tumor cell binding, tumor cell line cytotoxicity, andin vivo antitumor activity in preclinical models mimicking tumor progression. We refer to these in-licensed ADC assets as the "ADC Therapies" herein.

Previous wording

We anticipate submitting three investigational new drug (“IND”) applications with the U.S. Food and Drug Administration (“FDA”) in the coming 12 to 24 months, starting with HWK-007 for the treatment of solid tumors, including non-small cell lung cancer (“NSCLC”) and ovarian cancer, in the second half of 2025; HWK-016 for the treatment of cancers of female origin by the end of 2025; and HWK-206 for the treatment of cancers of neuroendocrine origin in mid-2026. With these three assets, we believe we have the ability to pursue multiple cancer indications with high potential in large addressable patient populations, including and beyond those indications currently expected to be targeted in the upcoming Phase 1 trials.

Current wording

We submitted investigational new drug (“IND”) applications with the U.S. Food and Drug Administration (“FDA”) for HWK-007, for the treatment of solid tumors, including non-small cell lung cancer (“NSCLC”) and ovarian cancer, and HWK-016, for the treatment of cancers of female origin, in the fourth quarter of 2025 and we anticipate submitting an IND for HWK-206 for the treatment of small cell lung cancer ("SCLC") and neuroendocrine tumors (“NETs”) in mid-2026. The FDA has cleared the IND applications for HWK-007 and HWK-016 and the Phase 1 trials for each asset are now actively recruiting. We expect data readouts in the first half of 2027 for each trial. With these three assets, we believe we have the ability to pursue multiple cancer indications with high potential in large addressable patient populations, including and beyond those indications currently expected to be targeted in our ongoing and upcoming Phase 1 trials.

Previous wording

Our track record of strong execution of novel drug formulation, research, clinical development, and commercialization in oncology, combined with our deep understanding of ADCs positions us to unlock the high potential of this differentiated ADC portfolio. Our management team has extensive experience in the discovery, development, and commercialization of cancer therapeutics, including in senior roles at leading oncology companies. We are supported by our board of directors and specialized scientific advisors, who contribute their deep understanding of drug discovery and development.

Current wording

Our track record of strong execution of novel drug formulation, research, clinical development, and commercialization in oncology, combined with our deep understanding of ADCs positions us to unlock the high potential of this differentiated ADC portfolio. Our management team has extensive experience in the discovery, development, and commercialization of cancer therapeutics, including in senior roles at leading oncology companies. We are supported by our board of directors and specialized scientific advisors, who contribute their deep understanding of drug discovery and development. Furthermore, our investor base includes top life science investors. We believe that our team is well positioned to execute on our strategy to develop and, if approved, commercialize the ADC Therapies and future pipeline assets to ultimately bring broad benefit to cancer patients worldwide.

Previous wording

For the periods presented and through the FYARRO Divestiture (as defined below), our 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. Nab-sirolimus is a potent inhibitor of the mTOR biological pathway with demonstrated anti-cancer activity in advanced malignant perivascular epithelioid cell tumor (“PEComa”), a rare cancer. We 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”). We refer to the development, production and commercial sale of FYARRO herein as the “FYARRO Business”. On February 22, 2022, we launched FYARRO in the United States for treatment of advanced malignant PEComa. For the fiscal year ended December 31, 2024, we recorded net revenue from product sales of $26.0 million and net loss of $63.7 million compared to the fiscal year ended December 31, 2023, where we recorded net revenue from product sales of $24.4 million and net loss of $65.8 million. See “Results of Consolidated Operations” for further discussion of our results.

Current wording

For the periods presented and through the FYARRO Divestiture (as defined below), our 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. Nab-sirolimus is a potent inhibitor of the mTOR biological pathway with demonstrated anti-cancer activity in advanced malignant perivascular epithelioid cell tumor (“PEComa”), a rare cancer. We 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”). We refer to the development, production and commercial sale of FYARRO herein as the “FYARRO Business”. On February 22, 2022, we launched FYARRO in the United States for treatment of advanced malignant PEComa. For the fiscal year ended December 31, 2025, we recorded net revenue from product sales of $7.1 million and net loss of $20.6 million compared to the fiscal year ended December 31, 2024, where we recorded net revenue from product sales of $26.0 million and net loss of $63.7 million. See “Results of Operations” for further discussion of our results.

Previous wording

Former BMS License Agreement. We had exclusive rights for certain patents and a non-exclusive license for certain technology and know-how pertaining to ABI-009 (which we refer to as FYARRO) pursuant to an amended and restated license agreement, dated November 15, 2019, as amended August 31, 2021 (the “BMS License Agreement”) with Abraxis BioScience, LLC, a wholly owned subsidiary of Celgene Corporation, which is a wholly owned subsidiary of BMS. Under the BMS License Agreement, BMS is entitled to receive certain development milestone payments, royalties on net sales from licensed products under the agreement and any sublicense fees. Under the terms of this agreement, we recorded royalties on net product sales of$1.9 million and $1.8 million for the years ended December 31, 2024 and 2023, respectively. No payments related to milestones under this agreement were paid during the years ended December 31, 2024 or 2023. See Note 7 to the consolidated financial statements for more information about the BMS License Agreement.

Current wording

Former BMS License Agreement. We had exclusive rights for certain patents and a non-exclusive license for certain technology and know-how pertaining to ABI-009 (which we refer to as FYARRO) pursuant to an amended and restated license agreement, dated November 15, 2019, as amended August 31, 2021 (the “BMS License Agreement”) with Abraxis BioScience, LLC, a wholly owned subsidiary of Celgene Corporation, which is a wholly owned subsidiary of BMS. Under the BMS License Agreement, BMS is entitled to receive certain development milestone payments, royalties on net sales from licensed products under the agreement and any sublicense fees. Under the terms of this agreement, we recorded royalties on net product sales of$0.5 million and $1.9 million for the years ended December 31, 2025 and 2024, respectively. No payments related to milestones under this agreement were paid during the years ended December 31, 2025 or 2024. See Note 7 to the financial statements for more information about the BMS License Agreement.

Previous wording

On June 27, 2022, we received written notice from EOC that EOC elected to terminate the EOC License Agreement, effective immediately. On June 27, 2022, EOC filed a Request for Arbitration with the International Chamber of Commerce’s International Court of Arbitration against us. On September 26, 2024, the arbitration panel issued a Final Award which, among other things, found and concluded that we did not breach the EOC License Agreement and accordingly we are not liable for any damages to EOC. See Note 7 to the consolidated financial statements for more information about the EOC License Agreement, its termination and the arbitration proceedings.

Current wording

On June 27, 2022, we received written notice from EOC that EOC elected to terminate the EOC License Agreement, effective immediately. On June 27, 2022, EOC filed a Request for Arbitration with the International Chamber of Commerce’s International Court of Arbitration against us. On September 26, 2024, the arbitration panel issued a Final Award which, among other things, found and concluded that we did not breach the EOC License Agreement and accordingly we are not liable for any damages to EOC.

Previous wording

Former Mirati Collaboration. In October 2022, we entered into a collaboration and supply agreement with Miratito evaluatethe combination of Mirati’s adagrasib and FYARRO in KRAS G12C mutant NSCLC and other solid tumors. In May 2024, we announced the mutually agreed upon termination of the collaboration and supply agreement with Mirati. Enrollment in the Phase 1/2 study has been closed and the study is winding down. Under the terms of the agreement, Mirati was responsible for sponsoring and operating the Phase 1/2 study and we supplied study drug and jointly shared the cost of the study, which will continue during the winding down process.

Current wording

Former Mirati Collaboration. In October 2022, we entered into a collaboration and supply agreement with Mirati to evaluate the combination of Mirati’s adagrasib and FYARRO in KRASG12C mutant NSCLC and other solid tumors. In May 2024, we announced the mutually agreed upon termination of the collaboration and supply agreement with Mirati. Under the terms of the agreement, Mirati was responsible for sponsoring and operating the Phase 1/2 study and we supplied study drug and jointly shared the cost of the study, which continued during the winding down process that has now completed.

Previous wording

Businesses have been and will continue to be impacted by a number of challenging global and national events and circumstances that continue to evolve, including the recent turmoil in the global banking system, public health epidemics, such as the COVID-19 pandemic, extreme weather conditions, increased economic uncertainty, inflation, rising interest rates, the implementation of tariffs (and, as applicable, their subsequent modification or removal), and geopolitical instability, including the conflicts in Ukraine, the Middle East and in other countries. The extent of the impact of these events and circumstances on our business, operations and development timelines and plans remains uncertain, and will depend on certain developments, including the duration and scope of the events and their impact on our development activities, third-party manufacturers, and other third parties with whom we do business, as well as its impact on regulatory authorities and our key scientific and management personnel. We have been and continue to actively monitor the potential impacts that these various events and circumstances may have on our business and we take steps, where warranted, to minimize any potential negative impacts on our business resulting from these events and circumstances. For example, as the COVID-19 pandemic developed, we took numerous steps to help ensure the health and safety of our employees. While we have resumed normal operations, any resurgence of the COVID-19 pandemic may cause us to reinstitute certain measures to protect employee safety, including staggered work hours or reduced in-person staffing, that could result in additional disruption and/or delays in our ability to conduct development activities.

Current wording

Businesses have been and will continue to be impacted by a number of challenging global and national events and circumstances that continue to evolve, including the implementation of tariffs (and, as applicable, their subsequent actual or threatened modification or removal), recent turmoil in the global banking system, public health epidemics, such as the COVID-19 pandemic, extreme weather conditions, increased economic and regulatory uncertainty, inflation, rising interest rates, and geopolitical instability, including trade disputes and negotiations and the military conflicts in Ukraine, the Middle East and in other countries. The extent of the impact of these events and circumstances on our business, operations and development timelines and plans remains uncertain, and will depend on certain developments, including the duration and scope of the events and their impact on our development activities, third-party manufacturers, and other third parties with whom we do business, as well as its impact on regulatory authorities and our key scientific and management personnel. We have been and continue to actively monitor the potential impacts that these various events and circumstances may have on our business and we take steps, where warranted, to minimize any potential negative impacts on our business resulting from these events and circumstances.

Previous wording

•Commercial sale of FYARRO was launched on February 22, 2022, for the treatment of patients with advanced malignant PEComa. We recorded net product sales of $26.0 million and $24.4 million during the years ended December 31, 2024 and 2023, respectively. As a result of the FYARRO Divestiture, we no longer commercialize FYARRO as of March 25, 2025. As the commercial sale of FYARRO constituted our sole source of revenue, we do not expect to generate further revenue for the foreseeable future.

Current wording

Commercial sale of FYARRO was launched on February 22, 2022, for the treatment of patients with advanced malignant PEComa. We recorded net product sales of $7.1 million and $26.0 million during the years ended December 31, 2025 and 2024, respectively. As a result of the FYARRO Divestiture, we no longer commercialize FYARRO as of March 25, 2025. As the commercial sale of FYARRO constituted our sole source of revenue, we do not expect to generate further revenue for the foreseeable future.

Previous wording

•We had built a cross-functional commercial team consisting of marketing, market access and commercial operations. Expenses related to our commercialization of FYARRO, including personnel expenses, sales support, and marketing are included in selling, general and administrative expensesfor the years ended December 31, 2024 and 2023. We expect these expenses to decrease, as compared to prior periods, due to our workforce reductions in 2024 and the FYARRO Divestiture.

Current wording

We had built a cross-functional commercial team consisting of marketing, market access and commercial operations. Expenses related to our commercialization of FYARRO, including personnel expenses, sales support, and marketing are included in selling, general and administrative expenses for the years ended December 31, 2025 and 2024. We expect these expenses to decrease, as compared to prior periods, due to the FYARRO Divestiture which closed on March 25, 2025.

Previous wording

•We expect to increase our investment in research and development related to the ADC Therapies. We will continue to incur significant research and development and other expenses related to such ongoing operations. Under the License Agreement, we paid $6.0 million to WuXi Biologics in the fourth quarter of 2024 and expect to pay $38.0 million to WuXi Biologics in the second quarter of 2025.

Current wording

We expect to increase our investment in research and development related to the ADC Therapies. We will continue to incur significant research and development and other expenses related to such ongoing operations. Under the License Agreement, we paid non-refundable license fees of $6.0 million and $38.0

Previous wording

The following discussion highlights our results of operations and the principal factors that have affected our financial condition as well as our liquidity and capital resources for the periods described and provides information that management believes is relevant for an assessment and understanding of the consolidated balance sheets and statements of operations and comprehensive loss presented herein. The following discussion and analysis are based on our consolidated financial statements contained in this Annual Report, which we have prepared in accordance with U.S. generally accepted accounting principles (“GAAP”). You should read the discussion and analysis together with such consolidated financial statements and the related notes thereto.

Current wording

The following discussion highlights our results of operations and the principal factors that have affected our financial condition as well as our liquidity and capital resources for the periods described and provides information that management believes is relevant for an assessment and understanding of the balance sheets and statements of operations and comprehensive loss presented herein. The following discussion and analysis are based on our financial statements contained in this Annual Report, which we have prepared in accordance with U.S. generally accepted accounting principles (“GAAP”). You should read the discussion and analysis together with such financial statements and the related notes thereto.

Previous wording

Costs for certain activities, such as manufacturing, nonclinical studies and clinical trials are generally recognized based on the evaluation of the progress of completion of specific tasks using information and data provided by our vendors and collaborators. Research and development activities are central to our business. We expect to increase our investment in research and development as a result of the ADC transaction. We will continue to incur significant research and development and other expenses related to such ongoing operations.

Current wording

Costs for certain activities, such as manufacturing, nonclinical studies and clinical trials are generally recognized based on the evaluation of the progress of completion of specific tasks using information and data provided by our vendors and collaborators. Research and development activities are central to our business. We expect to increase our investment in research and development related to the ADC Therapies. We will continue to incur significant research and development and other expenses related to such ongoing operations.

Previous wording

Cost of goods sold consist primarily of royalties paid to BMS, costs incurred on sales of FYARRO and costs to manufacture and prepare the product for sales subsequent to the FDA approval in November 2021. Costs incurred prior to the FDA approval were expensed when incurred.

Current wording

Cost of goods sold consist primarily of royalties paid to BMS, costs incurred on sales of FYARRO and costs to manufacture and prepare the product for sales.

Previous wording

Other income, net consists of interest income earned on cash, cash equivalents and short-term investments.

Current wording

Other income, net consists of interest income earned on cash, cash equivalents and short-term investments. For the year ended December 31, 2025, other income, net consists of gain on sale of a business, interest income earned on cash, cash equivalents and short-term investments, and income received for billable services not part of our ordinary activities provided by our employees to KAKEN under a Transition Services Agreement, as amended ("TSA"). The TSA was entered into in connection with the FYARRO Divestiture on March 25, 2025 and expired on October 24, 2025.

Previous wording

Our product sales, net consist of sales of FYARRO. Product sales, net for the years ended December 31, 2024 and 2023 were $26.0 million and $24.4 million, respectively. The increase in product sales, net of $1.6 million compared to the same period in the prior year was primarily driven by stronger demand.

Current wording

Our product sales, net consist of sales of FYARRO. Product sales, net for the years ended December 31, 2025 and 2024 were $7.1 million and $26.0 million, respectively. As a result of the FYARRO Divestiture, we no longer sell FYARRO as of March 25, 2025.

Previous wording

Selling, general and administrative expenses for the year ended December 31, 2024, were $36.7 million, compared to $44.5 million for the year ended December 31, 2023. The $7.8 million decrease was primarily driven by a reduction of $5.5 million of commercial and marketing expense, $3.2 million of personnel expenses, $0.8 million of legal costs and other expenses, offset by an increase of $1.7 million related toconsulting and insurance expense.

Current wording

Selling, general and administrative expenses for the year ended December 31, 2025, were $29.8 million, compared to $36.7 million for the year ended December 31, 2024. The $6.9 million decrease was driven by a reduction of $4.0 million of personnel expenses primarily related to the FYARRO Divestiture, $2.2 million of legal costs and other expenses, and $2.0 million of commercial and marketing expenses due to the FYARRO Divestiture, offset by an increase of $1.3 million related to consulting and insurance expenses.

Previous wording

Restructuring charges for the year ended December 31, 2024 were $2.6 million. The increase in restructuring expense was due to a restructuring plan to reduce our workforce by 32% in response to our announcement on August 20, 2024 that we halted the registration-intended PRECISION1 trial of nab-sirolimus in patients with solid tumors harboring TSC1 or TSC2 inactivating alterations.

Current wording

There were no restructuring charges for the year ended December 31, 2025. Restructuring charges for the year ended December 31, 2024 were $2.6 million. The restructuring charge recognized was due to a restructuring plan announced on August 20, 2024 to reduce our workforce by 32%. See Note 14 to the financial statements for more information regarding the restructuring.

Previous wording

Cost of goods sold for the years ended December 31, 2024 and 2023 was $3.0 million and $2.8 million, respectively. This increase is primarily driven by an increase of costs incurred on sales of FYARRO and costs to manufacture and prepare the product for sale.

Current wording

Cost of goods sold for the years ended December 31, 2025 and 2024 was $0.8 million and $3.0 million, respectively, primarily reflecting royalties incurred on product sold. The decrease of cost of goods sold was due to the FYARRO Divestiture on March 25, 2025.

Previous wording

The following table sets forth our other income, net:

Current wording

The following table sets forth our other income (expense), net:

Previous wording

Other income, net for theyear ended December 31, 2024, was $3.8 million of income, compared to $6.2 million of income for the year ended December 31, 2023. The change was primarily driven by a decrease in short-term investments held during the year ended December 31, 2024 compared to the year ended December 31, 2023.

Current wording

Other income (expense), net for the year ended December 31, 2025, was $93.8 million of income, compared to $3.8 million of income for the year ended December 31, 2024. The increase of $90.0 million was primarily driven by a gain on sale of a business related to the FYARRO Divestiture and higher interest income resulting from an increase in short-term investments held during the period.

Previous wording

As of December 31, 2024, we had $47.2 million of cash, cash equivalents and short-term investments. Upon the completion of the strategic transactions announced in December 2024, we added approximately $202.4 million to our cash, cash equivalents and short-term investments as of March 26, 2025, which includes $102.4 million received from the FYARRO Divestiture and $100.0 million received from the 2025 PIPE Financing. We expect to pay $38 million in April 2025 to Wuxi Biologics for the in-licensing of the ADC Therapies. Based on our current plans, we believe our existing cash, cash equivalents and short-term investments will enable us to conduct our planned operations into 2028.

Current wording

As of December 31, 2025, we had $145.7 million of cash, cash equivalents and short-term investments. Based on our current plans, we believe our existing cash, cash equivalents and short-term investments will enable us to conduct our planned operations into 2028.

Previous wording

We have incurred net losses in each year since inception and as of December 31, 2024, we had an accumulated deficit of $332.7 million. Our net losses were $63.7 million and $65.8 million for the years ended December 31, 2024 and 2023, respectively. These losses have resulted principally from costs incurred in connection with research and development activities and selling, general and administrative costs associated with our operations. We expect to continue to incur significant expenses and operating losses for the foreseeable future due to the cost of research and development, including conducting preclinical studies and clinical trials of the ADC Therapies, identifying and designing product candidates and the regulatory approval process for any product candidates we may develop.

Current wording

We have incurred net losses in each year since inception and as of December 31, 2025, we had an accumulated deficit of $353.3 million. Our net losses were $20.6 million and $63.7 million for the years ended December 31, 2025 and December 31, 2024, respectively. These losses have resulted principally from costs incurred in connection with research and development activities and selling, general and administrative costs associated with our operations. We expect to continue to incur significant expenses and operating losses for the foreseeable future due to the cost of research and development, including conducting preclinical studies and clinical trials of the ADC Therapies, identifying and designing product candidates and the regulatory approval process for any product candidates we may develop.

Previous wording

On March 17, 2022, we entered into a Sales Agreement (the “Sales Agreement”) with Cowen and Company, LLC (“Cowen”), with respect to an “at the market offering” pursuant to which we may offer and sell, from time to time at our sole discretion, shares of our common stock having aggregate gross proceeds of up to $75.0 million through Cowen as our sales agent. Under the Sales Agreement, we will set the parameters for the sale of shares, including the number of shares to be issued, the time period during which sales are requested to be made, limitations on the number or dollar value of shares that may be sold in any one trading day and any minimum price below which sales may not be made. We will pay Cowen 3.0% of the aggregate gross proceeds from each sale of shares of common stock under the Sales Agreement. As of December 31, 2024, no shares of common stock had been sold under the Sales Agreement.

Current wording

On March 17, 2022, we entered into a Sales Agreement, as amended by that certain Amendment No. 1 to Sales Agreement by and between the Company and TD Securities (USA) LLC (as successor to Cowen and Company, LLC) dated April 25, 2025 (the “Sales Agreement”) with Cowen and Company, LLC (“Cowen”), with respect to an “at the market offering” pursuant to which we may offer and sell, from time to time at our sole discretion, shares of our common stock having aggregate gross proceeds of up to $75.0 million through Cowen as our sales agent. Under the Sales Agreement, we will set the parameters for the sale of shares, including the number of shares to be issued, the time period during which sales are requested to be made, limitations on the number or dollar value of shares that may be sold in any one trading day and any minimum price below which sales may not be made. We will pay Cowen 3.0% of the aggregate gross proceeds from each sale of shares of common stock under the Sales Agreement. As of December 31, 2025, no shares of common stock had been sold under the Sales Agreement.

Previous wording

The shares of our common stock to be offered and sold under the Sales Agreement will be issued and sold pursuant to our shelf registration statement on the Form S-3 (File No. 333-277018) (the “Shelf Registration Statement”), which was filed with the SEC on February 12, 2024 and which became effective April 30, 2024. No securities have yet been sold under the Shelf Registration Statement. We filed a prospectus supplement with the SEC on May 3, 2024 in connection with the offer and sale of the shares pursuant to the Sales Agreement. The prospectus supplement offers up to an aggregate of $13.5 million in shares of our common stock. We will be required to file another prospectus supplement in the event we want to offer more than $13.5 million in shares of our common stock in accordance with the Sales Agreement.

Current wording

The shares of our common stock to be offered and sold under the Sales Agreement will be issued and sold pursuant to our shelf registration statement on the Form S-3 (File No. 333-277018) (the “Shelf Registration Statement”), which was filed with the SEC on February 12, 2024 and which became effective April 30, 2024. No securities have yet been sold under the Shelf Registration Statement.

Previous wording

On September 22, 2022, we entered into the Purchase Agreement on a private investment in public equity financing (the "2022 PIPE Financing") with certain investors (the "2022 PIPE Investors") for the sale of 3,373,526 shares of our common stock for a price of $12.50 per share and Pre-Funded Warrants to purchase an aggregate of 2,426,493 shares of our common stock, at a purchase price of $12.4999 per Pre-Funded Warrant. The Pre-Funded Warrants are exercisable at an exercise price of $0.0001 and will be exercisable until exercised in full. The 2022 PIPE Financing closed on September 26, 2022. Aggregated net proceeds, after deducting certain expenses incurred of $0.3 million related to the issuance of the shares were $72.2 million.

Current wording

On September 22, 2022, we entered into the Purchase Agreement for a private investment in public equity financing (the "2022 PIPE Financing") with certain investors (the "2022 PIPE Investors") for the sale of 3,373,526 shares of our common stock for a price of $12.50 per share and pre-funded warrants to purchase an aggregate of 2,426,493 shares of our common stock (the "2022 Pre-Funded Warrants"), at a purchase price of $12.4999 per 2022 Pre-Funded Warrant. The 2022 PIPE Financing closed on September 26, 2022. Aggregated net proceeds, after deducting certain expenses incurred of $0.3 million related to the issuance of the shares were $72.2 million. As of December 31, 2025, 2,000,037 of the 2022 Pre-Funded Warrants are still outstanding.

Previous wording

•PIPE Financing. On December 19, 2024, we entered into subscription agreements for a private investment in public equity financing (the "2025 PIPE Financing") with certain investors (the "2025 PIPE Investors") for the sale of(i) 21,592,000 shares of our common stock, par value $0.0001 per share, at a purchase price of $2.40 per share, and (ii) 20,076,500 pre-funded warrants, at a purchase price of $2.3999 per pre-funded Warrant, for aggregate gross proceeds of $100.0 million. The 2025 PIPE Financing was approved by our stockholders on February 28, 2025 and closed on March 4, 2025.

Current wording

On December 19, 2024, we entered into the Subscription Agreement (the "Subscription Agreement") with certain investors (the "2024 PIPE Investors"), pursuant to which we agreed to sell to the 2024 PIPE Investors (i) 21,592,000 shares of the our common stock, par value $0.0001 per share, at a purchase price of $2.40 per share, and (ii) pre-funded warrants to purchase an aggregate of 20,076,500 shares of our common stock (the "2024 Pre-Funded Warrants" and, together with 2022 Pre-Funded Warrants, the "Pre-Funded Warrants"), at a purchase price of $2.3999 per 2024 Pre-Funded Warrant, for aggregate net proceeds of $94.4 million, after deducting certain expenses incurred of $5.6 million related to the issuance of shares. The 2024 PIPE Financing closed on March 4, 2025. As of December 31, 2025, all 20,076,500 of the 2024 Pre-Funded Warrants are still outstanding.

Previous wording

Our cash used in operating activities primarily results from our net loss adjusted for non-cash expenses, changes in working capital components, amounts due to contract research organizations to conduct our clinical programs and employee-related expenditures for research and development and general and administrative activities. Our cash flows from operating activities will continue to be affected by spending to advance and support our clinical programs and other operating and general administrative activities, including operating as a public company, and may fluctuate significantly from quarter-to-quarter and year-to-year.

Current wording

Our cash used in operating activities primarily results from our net loss adjusted for non-cash expenses, changes in working capital components, amounts due to contract research organizations to conduct our clinical programs and employee-related expenditures for research and development and selling, general and administrative activities. Our cash flows from operating activities will continue to be affected by spending to advance our research and development of the ADC Therapies and identifying and designing product candidates and the regulatory approval process for any product candidates we may develop.

Previous wording

For the year ended December 31, 2023, cash used in operating activities was $59.7 million and resulted from (i) our net loss of $65.8 million, (ii) a $3.4 million net increase in cash used to fund changes in net operating assets and liabilities, and (iii) net non-cash adjustments totaling $9.5 million, which were primarily related to share-based compensation expense, discount amortization on short-term investments, lease expense, and depreciation and amortization expense.

Current wording

For the year ended December 31, 2025, cash used in operating activities was $97.4 million and resulted from (i) our net loss of $20.6 million, (ii) a $1.9 million net positive impact on cash used due to changes in net operating assets and liabilities, and (iii) net non-cash adjustments totaling $78.8 million, which were primarily related to gain on sale of business, share-based compensation expense, discount amortization on short-term investments, lease expense, and depreciation expense.

Previous wording

For the year ended December 31, 2024, cash used in operating activities was $59.6 million and resulted from (i) our net loss of $63.7 million, (ii) a $6.1 million net increase in cash used to fund changes in net operating assets and liabilities, and (iii) net non-cash adjustments totaling $10.2 million, which were primarily related to share-based compensation expense, discount amortization on short-term investments, lease expense, and depreciation expense.

Current wording

For the year ended December 31, 2024, cash used in operating activities was $59.6 million and resulted from (i) our net loss of $63.7 million, (ii) a $6.1 million net negative impact on cash used due to changes in net operating assets and liabilities, and (iii) net non-cash adjustments totaling $10.2 million, which were primarily related to share-based compensation expense, discount amortization on short-term investments, lease expense, and depreciation expense.

Previous wording

Cash provided by investing activities for the year ended December 31, 2023 was $83.2 million related to maturities of short-term investments of $151.6 million, offset by purchases of short-term investments of $64.4 million and fixed assets of $4.0 million.

Current wording

Cash provided by investing activities for the year ended December 31, 2025 was $11.9 million related to the purchases of short-term investments of $148.7 million and purchases of property and equipment of $0.6 million, offset by proceeds received from the sale of a business of $101.3 million and maturities of short-term investments of $59.8 million.

Previous wording

Cash provided by financing activities for the year ended December 31, 2023 was $0.3 million and related to the issuance of common stock under the employee stock purchase plan and exercise of stock options, offset by financing costs related to the Sales Agreement.

Current wording

Cash provided by financing activities for the year ended December 31, 2025 was $94.4 million and related to $100.0 million in gross proceeds received from the sale of common stock and 2024 Pre-Funded Warrants, offset by payment of 2024 PIPE Financing related transaction costs.

Previous wording

In April 2022, we entered into a sublease for 10,615 square feet of office space in Morristown, New Jersey. The term of the lease is seventy-three months unless terminated sooner. In connection with the FYARRO Divestiture, KAKEN assumed our sublease for the NJ office space, but we agreed to co-inhabit the office with KAKEN during a transition period.

Current wording

In April 2022, we entered into a sublease for 10,615 square feet of office space in Morristown, New Jersey. The term of the lease is seventy-three months unless terminated sooner. In connection with the FYARRO Divestiture, KAKEN assumed our sublease for the NJ office space. We are currently in the process of extending the office license arrangement with KAKEN upon the sublandlord's and landlord's consent.

Previous wording

Rent expense is being recorded on a straight-line basis. Rent expense related to the Pacific Palisades and Morristown leases was $0.5 million and $0.5 million for the years ended December 31, 2024 and 2023, respectively. See Note 6 to the consolidated financial statements for details related to future lease payments.

Current wording

Rent expense is being recorded on a straight-line basis. Rent expense related to the Morristown lease was $0.2 million and $0.3 million for the years ended December 31, 2025 and 2024, respectively. See Note 6 to the financial statements for details related to future lease payments.

Previous wording

On December 19, 2024, we entered into the License Agreement with WuXi Biologics for exclusive rights to certain patents and know-how pertaining to WuXi Biologics’ preclinical ADC Therapies leveraging Hangzhou DAC linker-payload technology targeting each of MUC16, PTK7 and SEZ6. Under the License Agreement, we expect to pay an additional non-refundable, upfront payment of $38.0 million prior to April 17, 2025, in each case, for the rights and licenses granted to us by WuXi Biologics.

Current wording

On December 19, 2024, we entered into the License Agreement with WuXi Biologics for exclusive rights to certain patents and know-how pertaining to WuXi Biologics’ preclinical ADC Therapies leveraging Hangzhou DAC linker-payload technology targeting each of MUC16, PTK7 and SEZ6. Under the License Agreement, we paid an additional non-refundable, upfront payment of $38.0 million, the balance of the up-front license fee, plus a 6% VAT fee on April 16, 2025, in each case, for the rights and licenses granted to us by WuXi Biologics.

Previous wording

Our consolidated financial statements are prepared in accordance with U.S. generally accepted accounting principles (“GAAP”). These accounting principles require us to make certain estimates, judgments and assumptions that affect the reported amounts of assets and liabilities as of the date of the financial statements, as well as the reported amounts of revenues and expenses during the periods presented. We believe that the estimates, judgments and assumptions are reasonable based upon information available to us at the time that these estimates, judgments and assumptions are made. To the extent there are material differences between these estimates, judgments or assumptions and actual results, our financial statements will be affected. Historically, revisions to our estimates have not resulted in a material change to our financial statements.

Current wording

Our financial statements are prepared in accordance with U.S. generally accepted accounting principles (“GAAP”). These accounting principles require us to make certain estimates, judgments and assumptions that affect the reported amounts of assets and liabilities as of the date of the financial statements, as well as the reported amounts of revenues and expenses during the periods presented. We believe that the estimates, judgments and assumptions are reasonable based upon information available to us at the time that these estimates, judgments and assumptions are made. To the extent there are material differences between these estimates, judgments or assumptions and actual results, our financial statements will be affected. Historically, revisions to our estimates have not resulted in a material change to our financial statements.