X0306 4/A 2020-06-25 2020-06-25 0 0001614067 Aridis Pharmaceuticals, Inc. ARDS 0001815352 Jafri Hasan C/O ARIDIS PHARMACEUTICALS, INC. 5941 OPTICAL COURT SAN JOSE CA 95138 0 1 0 0 Chief Medical Officer Stock Options 6.16 2020-06-25 4 A 0 80000 0 A 2030-06-25 Common Stock 80000 80000 D 25% of the shares subject to the option shall vest on the first year anniversary of the Vesting Commencement Date, which is June 15, 2020. Thereafter, 1/48th of the shares subject to the option shall vest each month on the same day of the month as the Vesting Commencement Date, subject to the Optionee providing services through each such vesting date (unless otherwise determined by the Company). /s/ Hasan Jafri 2020-06-25