X0306 4 2021-08-06 0 0000890394 MoSys, Inc. MOSY 0001254117 SULLIVAN JAMES 2309 BERING DRIVE SAN JOSE CA 95131 0 1 0 0 Chief Financial Officer Common Stock 2021-08-06 4 M 0 1375 A 6295 D Common Stock 2021-08-06 4 F 0 476 5.75 D 5819 D On February 6, 2019, the reporting person was granted 8,250 restricted stock units ("RSUs"), which reflect the impact of a 1-for-20 reverse stock split of Mosys, Inc. common stock effected in August 2019. The RSUs (RSUs) vest as to one-sixth of the shares subject to the RSUs on each semi-annual anniversary of February 6, 2019. Amounts shown represent the conversion of the RSUs into common stock on a one-for-one basis upon vesting. /s/ James Sullivan 2021-08-09