X0306 4 2022-01-03 0 0001061983 CYTOKINETICS INC CYTK 0001235945 WIERENGA WENDALL 280 EAST GRAND AVENUE SOUTH SAN FRANCISCO CA 94080 1 0 0 0 Common Stock 2022-01-03 4 A 0 122 46.0 A 6887 D Shares issued at Reporting Person's election pursuant to Issuer's stock in lieu of cash for all or part of directors' annual base retainer program. Shares are full vested from the moment of grant. Shares issued at per share price of $46.00, representing the Issuer's closing stock price on January 3, 2022. Amount includes 1,887 shares of common stock received at Reporting Person's election pursuant Issuer's stock in lieu of cash for all or part of directors' annual base retainer program. By: Robert Wong For: Wendell Wierenga 2022-01-04