SEC Form 4 · Updated Daily

CYTK

— CYTOKINETICS, INCORPORATED Ownership

Insider and institutional ownership derived from SEC Form 4 filings. Click any owner to see their holdings across every company they’ve filed on, and how their position has changed over time.

Financials Ownership

Current Reporting Owners

Owner	Role	Shares Owned	As Of	Last Activity
SCHMERTZLER MICHAEL	Director	4,340,923	2010-06-03	S
BVF PARTNERS L P/IL	10%+ Owner	3,811,271	2020-12-09	S
BIOTECHNOLOGY VALUE FUND L P	10%+ Owner	3,811,271	2020-12-09	S
BVF I GP LLC	10%+ Owner	3,811,271	2020-12-09	S
BIOTECHNOLOGY VALUE FUND II LP	Reporting Owner	3,811,271	2020-12-09	S
BVF II GP LLC	Reporting Owner	3,811,271	2020-12-09	S
Biotechnology Value Trading Fund OS LP	Reporting Owner	3,811,271	2020-12-09	S
BVF Partners OS Ltd.	Reporting Owner	3,811,271	2020-12-09	S
BVF GP HOLDINGS LLC	10%+ Owner	3,811,271	2020-12-09	S
BVF INC/IL	10%+ Owner	3,811,271	2020-12-09	S
LAMPERT MARK N	10%+ Owner	3,811,271	2020-12-09	S
Portfolio Services Ltd.	10%+ Owner	2,883,845	2014-02-25	P
Eastern Capital LTD	10%+ Owner	2,883,845	2014-02-25	P
DART KENNETH BRYAN	10%+ Owner	2,883,845	2014-02-25	P
DOW STEPHEN M	10%+ Owner · Director	1,421,052	2012-11-14	S
Blum Robert I	Director · Officer	286,044	2026-10-12	M
SPUDICH JAMES A	Director	181,800	2008-04-25	S
Malik Fady Ibraham	Officer	157,402	2026-10-20	M
Cragg David	Officer	153,233	2022-03-07	F
SCHLOSSBERG MARK A	Officer	128,604	2022-03-15	M
Hessekiel Jeffrey	Officer	107,943	2026-03-15	A
Jaw Ching	Officer	87,346	2023-03-06	A
HENDERSON JOHN T	Director	78,712	2026-10-16	A
Callos Andrew	Officer	68,555	2026-08-31	M
Morgan Bradley Paul	Officer	67,645	2017-08-31	M
Lee Sung	Officer	64,333	2026-07-01	M
GAGE L PATRICK	Director	51,234	2021-11-08	M
MORGANS DAVID J JR	Officer	48,734	2009-10-01	S
TRAUTMAN JAY K	Officer	47,896	2007-08-10	M
BARBARI SHARON SURREY	Director	47,640	2017-02-28	A
WOLFF ANDREW A	Officer	47,255	2017-02-28	A
Schnieders Elisabeth	Officer	43,919	2017-02-28	A
WIERENGA WENDELL	Director	35,660	2026-10-16	A
McDowell Caryn Gordon	Officer	35,000	2018-02-27	A
Wysenski Nancy	Director	34,089	2026-10-16	A
Pletcher Brett A	Officer	33,140	2024-08-30	A
WIERENGA WENDALL D	Officer	32,345	2025-07-15	A
CHARPENTIER BONNIE	Officer	29,004	2017-02-28	A
Bhanji Muna	Director	26,361	2026-05-27	A
Sabry James H	Reporting Owner	25,000	2010-06-03	M
Harrington Robert Arthur	Director	22,127	2026-10-16	A
RODDY PETER S	Officer	21,520	2018-02-27	A
COSTA SANTO J	Director	20,600	2024-05-15	A
RABSON MICHAEL	Officer	20,043	2009-12-18	M
SMITH SANDFORD D	Director	18,801	2024-01-02	A
Wong Robert	Officer	18,655	2024-12-03	A
PARSHALL B LYNNE	Director	10,784	2026-09-01	S
Kaye Edward M. MD	Director	10,629	2026-10-16	A
Landry Robert E	Director	8,184	2026-09-15	S
Califf Robert	Director	6,003	2022-01-03	A
Daly James M	Director	3,585	2026-10-16	A

Recent Filings

Date	Owner	Activity	Shares	Price	Owned After
2026-10-20	Malik Fady Ibraham	Option exercise (derivative)	3,500	$0.00	16,386
2026-10-20	Malik Fady Ibraham	Open-market sale	3,500	$64.01	153,902
2026-10-20	Malik Fady Ibraham	Option exercise	3,500	$7.80	157,402
2026-10-16	HENDERSON JOHN T	Grant / award	352	$63.92	78,712
2026-10-16	WIERENGA WENDELL	Grant / award	97	$63.92	35,660
2026-10-16	Daly James M	Grant / award	195	$63.92	3,585
2026-10-16	Harrington Robert Arthur	Grant / award	195	$63.92	22,127
2026-10-16	Kaye Edward M. MD	Grant / award	195	$63.92	10,629
2026-10-16	Wysenski Nancy	Grant / award	97	$63.92	34,089
2026-10-12	Blum Robert I	Option exercise (derivative)	7,500	$0.00	141,745
2026-10-12	Blum Robert I	Open-market sale	7,500	$62.88	278,544
2026-10-12	Blum Robert I	Option exercise	7,500	$10.60	286,044
2026-10-06	Malik Fady Ibraham	Option exercise (derivative)	3,500	$0.00	19,886
2026-10-06	Malik Fady Ibraham	Open-market sale	3,500	$61.38	153,902
2026-10-06	Malik Fady Ibraham	Option exercise	3,500	$7.80	157,402
2026-09-28	Blum Robert I	Option exercise (derivative)	7,500	$0.00	149,245
2026-09-28	Blum Robert I	Open-market sale	7,500	$65.46	278,544
2026-09-28	Blum Robert I	Option exercise	7,500	$10.60	286,044
2026-09-22	Malik Fady Ibraham	Option exercise (derivative)	3,500	$0.00	23,386
2026-09-22	Malik Fady Ibraham	Open-market sale	3,500	$68.29	153,902
2026-09-22	Malik Fady Ibraham	Option exercise	3,500	$7.80	157,402
2026-09-15	Blum Robert I	Open-market sale	97,926	$69.33	0
2026-09-15	Landry Robert E	Open-market sale	1,000	$72.13	8,184
2026-09-14	Blum Robert I	Option exercise (derivative)	7,500	$0.00	156,745
2026-09-14	Blum Robert I	Gift	97,926	$0.00	97,926
2026-09-14	Blum Robert I	Gift	97,926	$0.00	278,544
2026-09-14	Blum Robert I	Gift	1,350	$0.00	376,470
2026-09-14	Blum Robert I	Open-market sale	7,500	$73.44	377,820
2026-09-14	Blum Robert I	Option exercise	7,500	$10.60	385,320
2026-09-11	Landry Robert E	Open-market sale	1,000	$74.66	9,184
2026-09-08	Malik Fady Ibraham	Option exercise (derivative)	3,500	$0.00	26,886
2026-09-08	Malik Fady Ibraham	Open-market sale	3,500	$75.46	153,902
2026-09-08	Malik Fady Ibraham	Option exercise	3,500	$7.80	157,402
2026-09-01	PARSHALL B LYNNE	Open-market sale	5,000	$71.48	10,784
2026-08-31	Blum Robert I	Option exercise (derivative)	7,500	$0.00	164,245
2026-08-31	Blum Robert I	Open-market sale	7,500	$70.24	377,820
2026-08-31	Blum Robert I	Option exercise	7,500	$10.60	385,320
2026-08-31	Callos Andrew	Option exercise (derivative)	10,000	$0.00	0
2026-08-31	Callos Andrew	Open-market sale	10,000	$70.24	58,555
2026-08-31	Callos Andrew	Option exercise	10,000	$23.26	68,555

Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.