X0407 4 2023-05-24 0 0001673772 RAPT Therapeutics, Inc. RAPT 0001182471 RIEFLIN WILLIAM JL C/O RAPT THERAPEUTICS, INC. 561 ECCLES AVENUE SOUTH SAN FRANCISCO CA 94080 1 0 0 0 0 Stock Option (right to buy) 20.93 2023-05-24 4 A 0 12940 0.00 A 2033-05-23 Common Stock 12940 12940 D The Option shall vest on the earlier of (i) May 24, 2024, or (ii) one day prior to the date of the Issuer's next annual meeting of stockholders to be held in 2024, subject to the Reporting Person's continuous service through each applicable vesting date. /s/ Rodney Young, Attorney-in-Fact for William Rieflin 2023-05-25