CYTOKINETICS INC — Director's Dealing 2012

May 24, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: CYTOKINETICS INC (CYTK)
CIK: 0001061983
Period of Report: 2012-05-22

Reporting Person: SMITH SANDFORD D (Director)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-05-22	Non-Qualified Stock Option (right to buy)	$0.91	A	25000	Acquired	2022-05-22	Common Stock (25000)	Direct

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Non-Qualified Stock Option (right to buy)	$1.05	2022-03-05	Common Stock (40000)	40000	Direct
Non-Qualified Stock Option (right to buy)	$1.14	2022-04-02	Common Stock (16447)	16447	Direct

Footnotes

F1: This option shall vest and become exercisable as to 25,000 shares divided into equal monthly installments such that the option shall be 100% vested on May 22, 2013.

F2: This option shall vest and become exercisable as to 40,000 shares divided into equal monthly installments such that the option shall be 100% vested on March 5, 2015.

F3: This option shall vest and become exercisable as to 16,447 shares divided into equal monthly installments such that the option shall be 100% vested on January 2, 2013.