X0306 4 2021-02-22 0 0001451809 SITIME Corp SITM 0001834679 Assaderaghi Fariborz C/O SITIME CORPORATION 5451 PATRICK HENRY DR. SANTA CLARA CA 95054 0 1 0 0 See Remarks Common Stock 2021-02-22 4 S 0 306 114.09 D 123798 D Common Stock 2021-02-23 4 S 0 554 110.72 D 123244 D Represents the number of shares required to be sold by the reporting person to cover tax withholding obligations in connection with the vesting of previously awarded RSUs. This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary trade by the reporting person. Includes an aggregate of 122,104 shares of common stock issuable pursuant to previously reported restricted stock units that have not vested. Executive Vice President, Engineering & Technology Samsheer Ahamad, Attorney-in-fact 2021-02-24