Rigel Pharmaceuticals, Inc. announced that on February 1, 2023, Wolfgang Dummer, M.D., Ph.D. informed the Company of his intention to resign from his position as the Company's Executive Vice President and Chief Medical Officer. Such resignation is expected to be effective as of March 31st, 2023 (the “Separation Date”). The Company has initiated a replacement search for a new Chief Medical Officer with substantial hematology-oncology experience.

Dr. Dummer has agreed to continue in his role as Executive Vice President and Chief Medical Officer through the Separation Date.