As of April 17, 2026, the three largest insider holders of CYTK 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).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Robert I Blum | President Ceo | 415,330 | 0 | 15 Apr, 2026 |
| Fady Ibraham Malik | Evp Research Development | 153,902 | 0 | 08 Apr, 2026 |
| David Cragg | Chief Hr Admin Officer | 153,233 | 0 | 08 Mar, 2022 |
| David Cragg | Chief Hr Admin Officer | 153,233 | 0 | 08 Mar, 2022 |
| David Cragg | Chief Hr Admin Officer | 153,233 | 0 | 08 Mar, 2022 |
| Jeffrey Hessekiel | Chief Legal Admin Officer | 107,943 | 0 | 17 Mar, 2026 |
| Jeffrey Hessekiel | Chief Legal Admin Officer | 107,943 | 0 | 17 Mar, 2026 |
| Jeffrey Hessekiel | Chief Legal Admin Officer | 107,943 | 0 | 17 Mar, 2026 |
| Mark A Schlossberg | Svp Legal General Counsel | 103,408 | 0 | 15 Mar, 2022 |
| Mark A Schlossberg | Svp Legal General Counsel | 103,408 | 0 | 15 Mar, 2022 |
| Mark A Schlossberg | Svp Legal General Counsel | 103,408 | 0 | 15 Mar, 2022 |
| Ching Jaw | Svp Finance Cfo | 87,346 | 0 | 07 Mar, 2023 |
| Ching Jaw | Svp Finance Cfo | 87,346 | 0 | 07 Mar, 2023 |
| Ching Jaw | Svp Finance Cfo | 87,346 | 0 | 07 Mar, 2023 |
| Sung Lee | Evp, Chief Financial Officer | 87,127 | 0 | 18 Mar, 2026 |
| Sung Lee | Evp, Chief Financial Officer | 87,127 | 0 | 18 Mar, 2026 |
| John T Henderson | - | 75,237 | 0 | 15 Apr, 2026 |
| Andrew Callos | Evp, Chief Commercial Officer | 58,555 | 0 | 15 Apr, 2026 |
| Brett A Pletcher | Evp, Chief Legal Officer | 33,140 | 0 | 03 Sep, 2024 |
| Brett A Pletcher | Evp, Chief Legal Officer | 33,140 | 0 | 03 Sep, 2024 |
| Brett A Pletcher | Evp, Chief Legal Officer | 33,140 | 0 | 03 Sep, 2024 |
| Wendell Wierenga | - | 32,637 | 0 | 15 Apr, 2026 |
| Wendall Wierenga | - | 32,345 | 0 | 16 Jul, 2025 |
| Wendall Wierenga | - | 32,345 | 0 | 16 Jul, 2025 |
| Nancy Wysenski | - | 31,066 | 0 | 15 Apr, 2026 |
| L Patrick Gage | - | 28,932 | 0 | 08 Nov, 2021 |
| L Patrick Gage | - | 28,932 | 0 | 08 Nov, 2021 |
| Muna Bhanji | - | 23,510 | 0 | 15 May, 2025 |
| Santo J Costa | - | 20,600 | 0 | 16 May, 2024 |
| Robert Arthur Harrington | - | 18,930 | 0 | 15 Apr, 2026 |
| Sandford D Smith | - | 18,801 | 0 | 03 Jan, 2024 |
| Sandford D Smith | - | 18,801 | 0 | 03 Jan, 2024 |
| Sandford D Smith | - | 18,801 | 0 | 03 Jan, 2024 |
| Robert Arthur Harrington | - | 18,739 | 0 | 16 Jan, 2026 |
| Robert Arthur Harrington | - | 18,739 | 0 | 16 Jan, 2026 |
| Robert Wong | Vp, Chief Accounting Officer | 18,655 | 0 | 05 Dec, 2024 |
| Robert Wong | Vp, Chief Accounting Officer | 18,655 | 0 | 05 Dec, 2024 |
| Robert Wong | Vp, Chief Accounting Officer | 18,655 | 0 | 05 Dec, 2024 |
| B Lynne Parshall | - | 17,933 | 0 | 02 Mar, 2026 |
| B Lynne Parshall | - | 17,933 | 0 | 02 Mar, 2026 |
| B Lynne Parshall | - | 17,933 | 0 | 02 Mar, 2026 |
| Edward M. Md Kaye | - | 10,365 | 0 | 15 Apr, 2026 |
| Edward M. Md Kaye | - | 10,174 | 0 | 16 Jan, 2026 |
| Robert E Landry | - | 7,333 | 0 | 14 May, 2025 |
| Robert Califf | - | 6,003 | 0 | 04 Jan, 2022 |
| Robert Califf | - | 6,003 | 0 | 04 Jan, 2022 |
| Robert Califf | - | 6,003 | 0 | 04 Jan, 2022 |
| James M Daly | - | 388 | 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.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 15 Apr, 2026 | Edward M. Md Kaye | Common Stock | A | 191 | $65.37 | 10,365 | D | A |
| 15 Apr, 2026 | John T Henderson | Common Stock | A | 325 | $65.37 | 75,237 | D | A |
| 15 Apr, 2026 | Robert I Blum | Common Stock | D | 7,500 | $65.38 | 415,330 | D | S |
| 15 Apr, 2026 | James M Daly | Common Stock | A | 191 | $65.37 | 388 | D | A |
| 15 Apr, 2026 | Nancy Wysenski | Common Stock | A | 95 | $65.37 | 31,066 | D | A |
| 15 Apr, 2026 | Robert Arthur Harrington | Common Stock | A | 191 | $65.37 | 18,930 | D | A |
| 15 Apr, 2026 | Andrew Callos | Common Stock | D | 7,449 | $66.02 | 58,555 | D | S |
| 15 Apr, 2026 | Wendell Wierenga | Common Stock | A | 95 | $65.37 | 32,637 | D | A |
| 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 |
| 17 Mar, 2026 | Andrew Callos | Common Stock | D | 5,626 | $62.15 | 74,489 | D | S |
| 18 Mar, 2026 | Andrew Callos | Common Stock | D | 1,930 | $62.07 | 78,185 | D | S |
| 17 Mar, 2026 | Robert I Blum | Common Stock | D | 12,673 | $62.15 | 454,258 | D | S |
| 17 Mar, 2026 | Robert I Blum | Common Stock | D | 23,928 | $62.15 | 430,330 | D | S |