Cytokinetics Inc (CYTK) Insider Ownership

Historic Insider Ownership Trends

CYTK's three largest insider shareholders as of August 04, 2026 are Robert I Blum (President Ceo, 415.33K shares), Fady Ibraham Malik (Evp Research Development, 153.90K shares), David Cragg (Chief Hr Admin Officer, 153.23K shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares (Direct) Shares (Indirect) Report Date
Santo J Costa - 20,600 0 16 May, 2024
B Lynne Parshall - 17,933 0 02 Mar, 2026
Wendell Wierenga - 32,637 0 15 Apr, 2026
Sandford D Smith - 18,801 0 03 Jan, 2024
Robert I Blum President Ceo 415,330 0 15 Apr, 2026
Nancy Wysenski - 31,066 0 15 Apr, 2026
David Cragg Chief Hr Admin Officer 153,233 0 08 Mar, 2022
Mark A Schlossberg Svp Legal General Counsel 103,408 0 15 Mar, 2022
Fady Ibraham Malik Evp Research Development 153,902 0 21 Apr, 2026
James M Daly - 388 0 15 Apr, 2026
Robert Califf - 6,003 0 04 Jan, 2022
Robert E Landry - 7,333 0 14 May, 2025
Jeffrey Hessekiel Chief Legal Admin Officer 107,943 0 17 Mar, 2026
Ching Jaw Svp Finance Cfo 87,346 0 07 Mar, 2023
Brett A Pletcher Evp, Chief Legal Officer 33,140 0 03 Sep, 2024
Robert Wong Vp, Chief Accounting Officer 18,655 0 05 Dec, 2024
Muna Bhanji - 23,510 0 15 May, 2025
Andrew Callos Evp, Chief Commercial Officer 58,555 0 15 Apr, 2026
Robert Arthur Harrington - 18,930 0 15 Apr, 2026

* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
21 Apr, 2026 Fady Ibraham Malik Common Stock A 3,500 $7.80 157,402 D M
21 Apr, 2026 Fady Ibraham Malik Common Stock D 3,500 $65.69 153,902 D S
21 Apr, 2026 Fady Ibraham Malik Non-Qualified Stock Option (Right to Buy) D 3,500 $0.00 54,886 D M
15 Apr, 2026 James M Daly Common Stock A 191 $65.37 388 D A
15 Apr, 2026 Robert Arthur Harrington Common Stock A 191 $65.37 18,930 D A
15 Apr, 2026 Robert Arthur Harrington Common Stock A 191 $65.37 18,930 D A
15 Apr, 2026 Robert Arthur Harrington Common Stock A 191 $65.37 18,930 D A
15 Apr, 2026 Wendell Wierenga Common Stock A 95 $65.37 32,637 D A
15 Apr, 2026 Andrew Callos Common Stock D 7,449 $66.02 58,555 D S
15 Apr, 2026 Robert Arthur Harrington Common Stock A 191 $65.37 18,930 D A
15 Apr, 2026 Nancy Wysenski Common Stock A 95 $65.37 31,066 D A
15 Apr, 2026 Robert I Blum Common Stock D 7,500 $65.38 415,330 D S
07 Apr, 2026 Fady Ibraham Malik Common Stock A 3,500 $7.80 157,402 D M
07 Apr, 2026 Fady Ibraham Malik Common Stock D 3,500 $65.21 153,902 D S
07 Apr, 2026 Fady Ibraham Malik Common Stock A 1,000 $10.60 154,902 D M
07 Apr, 2026 Fady Ibraham Malik Common Stock D 1,000 $64.75 153,902 D S
07 Apr, 2026 Fady Ibraham Malik Non-Qualified Stock Option (Right to Buy) D 3,500 $0.00 58,386 D M
07 Apr, 2026 Fady Ibraham Malik Non-Qualified Stock Option (Right to Buy) D 1,000 $0.00 0 D M
01 Apr, 2026 Robert I Blum Common Stock D 7,500 $66.63 422,830 D S
31 Mar, 2026 Andrew Callos Common Stock D 3,639 $65.00 66,004 D S