On December 4, 2019, the Board of Directors of RAPT Therapeutics, Inc. appointed Mary Ann Gray, Ph.D. as member of the Board effective immediately to fill a vacancy on the Board for the term expiring at the Company’s 2020 Annual Meeting of Stockholders and until her successor is duly elected and qualified, or until her earlier death, resignation or removal. In connection with her appointment to the Board, Dr. Gray was appointed to the Audit Committee of the Board (the “Audit Committee”) as its chair effective as of December 4, 2019.