Rigel Provides Fourth Quarter and Full Year 2025 Financial Results and Provides Business Update

SOUTH SAN FRANCISCO, Calif.,March 3, 2026/PRNewswire/ -- Rigel Pharmaceuticals, Inc. (Nasdaq: RIGL), a commercial stage biotechnology company focused on hematologic disorders and cancer, today reported financial results for the fourth quarter and year ended December 31, 2025, including sales of TAVALISSE®(fostamatinib disodium hexahydrate), GAVRETO®(pralsetinib) and REZLIDHIA®(olutasidenib), and recent business progress.

"I am proud to highlight Rigel's tremendous progress during 2025 across each of the key value drivers of our business. We delivered record net product sales, total revenues and net income while making meaningful advances in our Phase 1b study of R289 in lower-risk MDS," said Raul Rodriguez, Rigel's president and CEO. "These 2025 accomplishments set the stage for a strong 2026, as reflected in our financial guidance and our plans to advance our R289 program in lower-risk MDS and other potential indications."

Fourth Quarter and Full Year 2025 Business Update

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Clinical Development and Regulatory

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Corporate

Fourth Quarter and Full Year 2025 Financial Update

For the fourth quarter ended December 31, 2025, total revenues were $69.8 million, consisting of $65.4 million in net product sales and $4.4 million in contract revenues. Net product sales grew 41% compared to $46.5 million in the same period of 2024. TAVALISSE net product sales were $45.6 million, growth of 47% compared to $31.0 million in the same period of 2024. GAVRETO net product sales were $10.2 million, growth of 27% compared to $8.1 million in the same period of 2024. REZLIDHIA net product sales were $9.6 million, growth of 29% compared to $7.4 million in the same period of 2024. Contract revenues include $4.1 million in contract revenues from collaborations and $0.3 million in government contract revenue. Contract revenues from collaborations primarily consisted of $3.4 million of revenue from Grifols S.A. (Grifols) related to delivery of drug supplies and earned royalties, $0.3 million of revenue from Kissei Pharmaceutical Co., Ltd. (Kissei) related to the delivery of drug supplies and $0.2 million of revenue from Medison Pharma (Medison) related to earned royalties.

Total costs and expenses were $46.6 million compared to $40.9 million for the same period of 2024. The increase in costs and expenses was mainly due to increased research and development costs driven by the timing of clinical activities related to R289 and olutasidenib and higher personnel-related costs.

Income before income taxes was $22.7 million. Benefit from income taxes was $245.4 million in the fourth quarter, primarily driven by $245.9 million of non-cash deferred income tax benefit, partially offset by state tax expenses.

Rigel reported net income of $268.1 million, or $14.72 basic and $13.54 diluted per share, compared to $14.3 million, or $0.81 basic and $0.80 diluted per share, for the same period of 2024.

For the year ended December 31, 2025, total revenues were $294.3 million, consisting of $232.0 million in net product sales and $62.3 million in contract revenues. Net product sales grew 60% compared to $144.9 million in the same period of 2024. TAVALISSE net product sales were $158.8 million, growth of 52% compared to $104.8 million in the same period of 2024. GAVRETO net product sales were $42.1 million, growth of 146% compared to $17.1 million in the same period of 2024. GAVRETO became commercially available from Rigel in late June 2024. REZLIDHIA net product sales were $31.0 million, growth of 35% compared to $23.0 million in the same period of 2024. Contract revenues include $62.0 million in contract revenues from collaborations and $0.3 million in government contract revenue. Contract revenues from collaborations primarily consisted of $40.0 million in non-cash revenue resulting from the release of the remaining cost share liability related to the agreement with Lilly for the development and commercialization of ocadusertib, $13.2 million of revenue from Grifols related to delivery of drug supplies and earned royalties, $7.2 million of revenue from Kissei related to a milestone payment and delivery of drug supplies and $1.1 million of revenue from Medison related to delivery of drug supplies and earned royalties.

Total costs and expenses were $168.8 million compared to $155.1 million for the same period of 2024. The increase in costs and expenses was mainly due to increased research and development costs driven by the timing of clinical activities related to R289 and olutasidenib, higher personnel-related costs, and higher cost of product sales.

Income before income taxes was $121.8 million. Benefit from income taxes was $245.2 million in 2025, primarily driven by $245.9 million of non-cash deferred income tax benefit, partially offset by state tax expenses.

Rigel reported net income of $367.0 million, or $20.40 basic and $19.48 diluted per share, compared to $17.5 million, or $0.99 basic and diluted per share, for the same period of 2024.

Cash, cash equivalents and short-term investments as of December 31, 2025 was $155.0 million, compared to $77.3 million as of December 31, 2024.

2026 OutlookRigel anticipates 2026 total revenues of approximately $275 to $290 million, including:

The company anticipates it will report positive net income for the full year 2026, while funding existing and new clinical development programs.

Conference Call and Webcast with Slides Today at 4:30pm Eastern TimeRigel will hold a live conference call and webcast today at 4:30pm Eastern Time (1:30pm Pacific Time).

Participants can access the live conference call by dialing (877) 407-3088 (domestic) or (201) 389-0927 (international). The conference call will also be webcast live and can be accessed from the Investor Relations section of the company's website atwww.rigel.com. The webcast will be archived and available for replay after the call via the Rigel website.

About ITPIn patients with immune thrombocytopenia (ITP), the immune system attacks and destroys the body's own blood platelets, which play an active role in blood clotting and healing. Common symptoms of ITP are excessive bruising and bleeding. Patients suffering with chronic ITP may live with an increased risk of severe bleeding events that can result in serious medical complications or even death. Current therapies for ITP include steroids, blood platelet production boosters (TPO-RAs), and splenectomy. However, not all patients respond to existing therapies. As a result, there remains a significant medical need for additional treatment options for patients with ITP.

About NSCLCIt is estimated that over 229,000 adults in the U.S. will be diagnosed with lung cancer in 2026. Lung cancer is the leading cause of cancer death in the U.S., with non-small cell lung cancer (NSCLC) being the most common type accounting for 77% of all lung cancer diagnoses.2RET fusions are implicated in approximately 1-2% of patients with NSCLC.3

About AMLAcute myeloid leukemia (AML) is a rapidly progressing cancer of the blood and bone marrow that affects myeloid cells, which normally develop into various types of mature blood cells. AML occurs primarily in adults and accounts for about 1 percent of all adult cancers. The American Cancer Society estimates that there will be about 22,720 new cases in the United States, most in adults, in 2026.4

Relapsed AML affects about half of all patients who, following treatment and remission, experience a return of leukemia cells in the bone marrow.5,6Refractory AML, which affects between 10 and 40 percent of newly diagnosed patients, occurs when a patient fails to achieve remission even after intensive treatment.7Quality of life declines for patients with each successive line of treatment for AML, and well-tolerated treatments in relapsed or refractory disease remain an unmet need.

About TAVALISSE®TAVALISSE (fostamatinib disodium hexahydrate) tablets is indicated for the treatment of thrombocytopenia in adult patients with chronic immune thrombocytopenia (ITP) who have had an insufficient response to a previous treatment.

Please clickherefor Important Safety Information and Full Prescribing Information for TAVALISSE.

About GAVRETO®GAVRETO is indicated for the treatment of adult patients with metastatic rearranged during transfection (RET) fusion-positive non-small cell lung cancer (NSCLC) as detected by an FDA-approved test and adult and pediatric patients 12 years of age and older with advanced or metastatic RET fusion-positive thyroid cancer who require systemic therapy and who are radioactive iodine-refractory (if radioactive iodine is appropriate).*

*Thyroid indication is approved under accelerated approval based on overall response rate and duration of response. Continued approval for this indication may be contingent upon verification and description of clinical benefit in confirmatory trial(s).

Please clickherefor Important Safety Information and Full Prescribing Information, including Boxed WARNING, for GAVRETO.

About REZLIDHIA®REZLIDHIA is indicated for the treatment of adult patients with relapsed or refractory acute myeloid leukemia (AML) with a susceptible isocitrate dehydrogenase-1 (IDH1) mutation as detected by an FDA-approved test.

Please clickherefor Important Safety Information and Full Prescribing Information, including Boxed WARNING, for REZLIDHIA.

To report side effects of prescription drugs to the FDA, visitwww.fda.gov/medwatchor call 1-800-FDA-1088 (800-332-1088).

TAVALISSE, GAVRETO and REZLIDHIA are registered trademarks of Rigel Pharmaceuticals, Inc.

About RigelRigel Pharmaceuticals, Inc. (Nasdaq: RIGL) is a biotechnology company dedicated to discovering, developing and providing novel therapies that significantly improve the lives of patients with hematologic disorders and cancer. Founded in 1996, Rigel is based in South San Francisco, California. For more information on Rigel, the Company's marketed products and pipeline of potential products, visitwww.rigel.com.

Forward Looking StatementsThis press release contains forward-looking statements relating to, among other things, expected commercial, financial and clinical results, increased projections of financial performance and outlook for 2026, expectations for growing ourcommercial business, continued enrollment of our R289 study, presentation of study data, expectation of clinical outcomes, continued ability for developing and commercializing TAVALISSE, GAVRETO, REZLIDHIA and R289 domestically and in certain international markets, and expectations for Rigel's partnering and collaboration efforts. Any statements contained in this press release that are not statements of historical fact may be deemed to be forward-looking statements. Forward-looking statements can be identified by words such as "anticipates", "plan", "outlook", "potential", "may", "look to", "expects", "will", "initial", "promising", and similar expressions in reference to future periods. Forward-looking statements are neither historical facts nor assurances of future performance. Instead, they are based on Rigel's current beliefs, expectations, and assumptions and hence they inherently involve significant risks, uncertainties and changes in circumstances that are difficult to predict and many of which are outside of our control. Therefore, you should not rely on any of these forward-looking statements. These forward-looking statements include, without limitation, anticipated financial performance for 2026; anticipated timing and results from the clinical development of R289; Rigel's intention to fund existing and new clinical development programs while anticipating positive net income for 2026; and our general statements regarding anticipated financial and operational performance for 2026 and beyond. Actual results and the timing of events could differ materially from those anticipated in such forward looking statements as a result of these risks and uncertainties, which include, without limitation, risks and uncertainties associated with the commercialization and marketing of TAVALISSE, GAVRETO, and REZLIDHIA; risks that the FDA, European Medicines Agency, PMDA or other regulatory authorities may make adverse decisions regarding TAVALISSE, GAVRETO, REZLIDHIA or R289; operational, regulatory or other risks that can affect the timing of enrollment and data availability for R289 clinical development; risks that clinical trials may not be predictive of real-world results or of results in subsequent clinical trials; risks that TAVALISSE, GAVRETO, REZLIDHIA or R289 may have unintended side effects, adverse reactions or incidents of misuses; the availability of resources to develop or market Rigel's product candidates; market competition; unanticipated business needs and other developments, including potential partnering, licensing or other collaboration arrangements, which could impact Rigel's funding needs or other internal resource demands, as well as other risks detailed from time to time in Rigel's reports filed with the Securities and Exchange Commission, including its Quarterly Report on Form 10-Q for the quarter ended September 30, 2025 and subsequent filings. Any forward-looking statement made by us in this press release is based only on information currently available to us and speaks only as of the date on which it is made. Rigel does not undertake any obligation to update forward-looking statements, whether written or oral, that may be made from time to time, whether as a result of new information, future developments or otherwise, and expressly disclaims any obligation or undertaking to release publicly any updates or revisions to any forward-looking statements contained herein, except as required by law.

Contact for Investors & Media:

Investors:Rigel Pharmaceuticals, Inc.650.624.1232ir@rigel.com

Media:David RosenArgot Partners646.461.6387david.rosen@argotpartners.com