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).
| 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.
| 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 |