According to recent filings covering the 90 days ending January 10, 2026, the three most significant insider holders at Cogent Biosciences are Director Funds Management Llc Fairmount (9.00Mn shares), President And Ceo Andrew R Robbins (657.50K shares), Chief Commercial Officer Cole Pinnow (216.65K shares).
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| Funds Management Llc Fairmount | 9,003,418 | 14 Jul, 2025 | |
| Andrew R Robbins | President And Ceo | 657,503 | 19 Dec, 2025 |
| Cole Pinnow | Chief Commercial Officer | 216,650 | 19 Dec, 2025 |
| John Edward Robinson | Chief Scientific Officer | 140,002 | 30 Dec, 2025 |
| Jessica Sachs | Chief Medical Officer | 133,938 | 30 Dec, 2025 |
| John L. Green | Chief Financial Officer | 131,834 | 30 Dec, 2025 |
| Evan Kearns | Chief Legal Officer | 109,398 | 30 Dec, 2025 |
* 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 |
|---|---|---|---|---|---|---|---|---|
| 26 Dec, 2025 | John L. Green | Common Stock | D | 77,000 | $38.68 | 131,834 | D | S |
| 26 Dec, 2025 | Evan Kearns | Common Stock | D | 65,000 | $38.70 | 109,398 | D | S |
| 26 Dec, 2025 | Jessica Sachs | Common Stock | D | 82,642 | $38.70 | 133,938 | D | S |
| 26 Dec, 2025 | John Edward Robinson | Common Stock | D | 90,000 | $38.74 | 140,002 | D | S |
| 17 Dec, 2025 | Andrew R Robbins | Common Stock | A | 840,000 | $0.00 | 1,025,000 | D | A |
| 17 Dec, 2025 | Andrew R Robbins | Common Stock | D | 367,497 | $39.45 | 657,503 | D | F |
| 17 Dec, 2025 | Andrew R Robbins | Common Stock | A | 185,000 | $0.00 | 185,000 | D | A |
| 17 Dec, 2025 | John L. Green | Common Stock | A | 300,000 | $0.00 | 353,841 | D | A |
| 17 Dec, 2025 | John L. Green | Common Stock | A | 50,000 | $0.00 | 53,841 | D | A |
| 17 Dec, 2025 | John L. Green | Common Stock | D | 145,007 | $39.45 | 208,834 | D | F |
| 17 Dec, 2025 | Evan Kearns | Common Stock | A | 260,000 | $0.00 | 300,000 | D | A |
| 17 Dec, 2025 | Evan Kearns | Common Stock | D | 125,602 | $39.45 | 174,398 | D | F |
| 17 Dec, 2025 | Evan Kearns | Common Stock | A | 40,000 | $0.00 | 40,000 | D | A |
| 17 Dec, 2025 | Jessica Sachs | Common Stock | A | 50,000 | $0.00 | 51,296 | D | A |
| 17 Dec, 2025 | Jessica Sachs | Common Stock | D | 154,716 | $39.45 | 216,580 | D | F |
| 17 Dec, 2025 | Jessica Sachs | Common Stock | A | 320,000 | $0.00 | 371,296 | D | A |
| 17 Dec, 2025 | John Edward Robinson | Common Stock | A | 50,000 | $0.00 | 50,000 | D | A |
| 17 Dec, 2025 | John Edward Robinson | Common Stock | A | 320,000 | $0.00 | 370,000 | D | A |
| 17 Dec, 2025 | John Edward Robinson | Common Stock | D | 139,998 | $39.45 | 230,002 | D | F |
| 17 Dec, 2025 | Cole Pinnow | Common Stock | A | 50,000 | $0.00 | 97,450 | D | A |