CYTOKINETICS INC - Director's Dealing 2017

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: CYTOKINETICS INC (CYTK)
CIK: 0001061983
Period of Report: 2017-08-08

Reporting Person: McDowell Caryn Gordon (GC & Chief Compliance Officer)

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2017-08-08	Common Stock	M	1391	$6.67	Acquired	21570	Direct
2017-08-08	Common Stock	S	300	$12.35	Disposed	21270	Direct
2017-08-08	Common Stock	M	2736	$6.67	Acquired	24006	Direct
2017-08-08	Common Stock	S	500	$12.375	Disposed	23506	Direct
2017-08-08	Common Stock	M	5411	$6.37	Acquired	28917	Direct
2017-08-08	Common Stock	S	3200	$12.4	Disposed	25717	Direct
2017-08-08	Common Stock	S	800	$12.425	Disposed	24917	Direct
2017-08-08	Common Stock	S	2300	$12.45	Disposed	22617	Direct
2017-08-08	Common Stock	S	200	$12.475	Disposed	22417	Direct
2017-08-08	Common Stock	S	300	$12.5	Disposed	22117	Direct
2017-08-08	Common Stock	S	700	$12.625	Disposed	21417	Direct
2017-08-08	Common Stock	S	500	$12.65	Disposed	20917	Direct
2017-08-08	Common Stock	S	538	$12.7	Disposed	20379	Direct
2017-08-08	Common Stock	S	200	$12.725	Disposed	20179	Direct
2017-08-08	Common Stock	S	1810	$12.45	Disposed	18369	Direct

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2017-08-08	Incentive Stock Option (right to buy)	$6.37	M	5411	Disposed	2025-05-29	Common Stock (5411)	Direct
2017-08-08	Incentive Stock Option (right to buy)	$6.67	M	2736	Disposed	2026-02-23	Common Stock (2736)	Direct
2017-08-08	Non-Qualified Stock Option (right to buy)	$6.67	M	1391	Disposed	2026-02-23	Common Stock (1391)	Direct

F1: The exercise reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 13, 2017.

F2: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 13, 2017.