X0303 4 2010-01-04 0001061983 CYTOKINETICS INC CYTK 0001008455 HEIDRICH A GRANT III 2800 SAND HILL ROAD SUITE 250 MENLO PARK CA 94025 1 0 0 0 Stock Option (right to buy) 3.11 2010-01-04 4 A 0 16077 1.244 A 2010-02-04 2020-01-04 Common Stock 16077 16077 D The option shall vest and become exercisable in equal monthly installments such that the option shall be 100% vested on January 4, 2011. This option was issued to the Reporting Person pursuant to the Cytokinetics 2004 Equity Incentive Plan in lieu of an annual retainer of $20,000. David L. Bandy, Attorney-In-Fact for the Reporting Person 2010-01-04