Cogent Biosciences to Host Investor Webcast to Discuss Lead-In Data Being Presented at ASCO from the Ongoing Phase 3 PEAK Trial in Patients with Gastrointestinal Stromal Tumors (GIST)

Cogent Biosciences, Inc. (Nasdaq: COGT), a biotechnology company focused on developing precision therapies for genetically defined diseases, today announced the details of its investor webcast being held Monday, June 5, 2023 at 8:00 a.m. ET (7:00 a.m. CT) to discuss lead-in data from its ongoing Phase 3 PEAK trial evaluating bezuclastinib in combination with sunitinib in patients with Gastrointestinal Stromal Tumors (GIST). The data are being presented in a poster session at the American Society of Clinical Oncology (ASCO) Annual Meeting on June 3, 2023 at 2:15 p.m. ET (1:15 p.m. CT).

The webcast event will be led by Andrew Robbins, Cogent’s President and Chief Executive Office and will include a presentation by Andrew J. Wagner, M.D., Ph.D., Senior Physician, Center for Sarcoma and Bone Oncology, Dana-Farber Cancer Institute, and Associate Professor of Medicine, Harvard Medical School.

The live webcast can be accessed on the Investors and Media page of Cogent’s website at investors.cogentbio.com/events. A replay of the webcast will be available approximately two hours after the completion of the event and will be archived for up to 30 days.

About Cogent Biosciences, Inc.Cogent Biosciences is a biotechnology company focused on developing precision therapies for genetically defined diseases. The most advanced clinical program, bezuclastinib, is a selective tyrosine kinase inhibitor that is designed to potently inhibit the KIT D816V mutation as well as other mutations in KIT exon 17. KIT D816V is responsible for driving systemic mastocytosis, a serious disease caused by unchecked proliferation of mast cells. Exon 17 mutations are also found in patients with advanced gastrointestinal stromal tumors (GIST), a type of cancer with strong dependence on oncogenic KIT signaling. In addition to bezuclastinib, the Cogent Research Team is developing a portfolio of novel targeted therapies to help patients fighting serious, genetically driven diseases initially targeting FGFR2 and ErbB2. Cogent Biosciences is based in Waltham, MA and Boulder, CO. Visit our website for more information at www.cogentbio.com. Follow Cogent Biosciences on social media: Twitter and LinkedIn. Information that may be important to investors will be routinely posted on our website and Twitter.

Contact:Christi WaarichSenior Director, Investor [e-mail]617-830-1653