CYTOKINETICS INC — Director's Dealing 2010

May 21, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: CYTOKINETICS INC (CYTK)
CIK: 0001061983
Period of Report: 2010-05-20

Reporting Person: GAGE L PATRICK (Director)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-05-20	Non-Qualified Stock Option (right to buy)	$2.81	A	20000	Acquired	2020-05-20	Common Stock (20000)	Direct

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Non-Qualified Stock Option (right to buy)	$3.33	2019-11-05	Common Stock (30000)	30000	Direct

Footnotes

F1: This option shall vest and become exercisable as to 20,000 shares divided into equal monthly installments such that the option shall be 100% vested on May 20, 2011.

F2: This option shall vest and become exercisable as to 833 shares on 12/05/09 and the balance of 29,167 divided into equal monthly installments thereafter such that the option shall be 100% vested on 11/05/12.