4 insiders reported 32 Form 4 transactions for Hemab Therapeutics Holdings, Inc. (COAG) over the past 18 months (most recent 2026-05-21). Recent activity: Kolchinsky Peter (Insider) Buy 3,802 shares, Shah Rajeev M. (Insider) Buy 3,802 shares, RA CAPITAL MANAGEMENT, L.P. (Insider) Buy 3,802 shares, RA Capital Healthcare Fund LP (Insider) Buy 3,802 shares, Shah Rajeev M. (Insider) Buy 996 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-05-21 | Kolchinsky Peter | Insider | Buy | 3,802 | $94,936 |
| 2026-05-21 | Shah Rajeev M. | Insider | Buy | 3,802 | $94,936 |
| 2026-05-21 | RA CAPITAL MANAGEMENT, L.P. | Insider | Buy | 3,802 | $94,936 |
| 2026-05-21 | RA Capital Healthcare Fund LP | Insider | Buy | 3,802 | $94,936 |
| 2026-05-21 | Shah Rajeev M. | Insider | Buy | 996 | $24,840 |
| 2026-05-21 | Kolchinsky Peter | Insider | Buy | 996 | $24,840 |
| 2026-05-21 | RA CAPITAL MANAGEMENT, L.P. | Insider | Buy | 996 | $24,840 |
| 2026-05-21 | RA Capital Healthcare Fund LP | Insider | Buy | 996 | $24,840 |
| 2026-05-14 | RA Capital Healthcare Fund LP | Insider | Buy | 6,387 | $159,036 |
| 2026-05-14 | Shah Rajeev M. | Insider | Buy | 6,387 | $159,036 |
| 2026-05-14 | Kolchinsky Peter | Insider | Buy | 6,387 | $159,036 |
| 2026-05-14 | RA CAPITAL MANAGEMENT, L.P. | Insider | Buy | 6,387 | $159,036 |
| 2026-05-11 | RA Capital Healthcare Fund LP | Insider | Buy | 7,921 | $192,797 |
| 2026-05-11 | Shah Rajeev M. | Insider | Buy | 7,921 | $192,797 |
| 2026-05-11 | Kolchinsky Peter | Insider | Buy | 7,921 | $192,797 |
| 2026-05-11 | RA CAPITAL MANAGEMENT, L.P. | Insider | Buy | 7,921 | $192,797 |
| 2026-05-11 | Shah Rajeev M. | Insider | Buy | 1,985 | $49,526 |
| 2026-05-11 | Kolchinsky Peter | Insider | Buy | 1,985 | $49,526 |
| 2026-05-11 | RA CAPITAL MANAGEMENT, L.P. | Insider | Buy | 1,985 | $49,526 |
| 2026-05-11 | RA Capital Healthcare Fund LP | Insider | Buy | 1,985 | $49,526 |
| 2026-05-11 | Shah Rajeev M. | Insider | Buy | 1,483 | $37,045 |
| 2026-05-11 | Kolchinsky Peter | Insider | Buy | 14,149 | $346,226 |
| 2026-05-11 | RA CAPITAL MANAGEMENT, L.P. | Insider | Buy | 1,483 | $37,045 |
| 2026-05-11 | RA Capital Healthcare Fund LP | Insider | Buy | 1,483 | $37,045 |
| 2026-05-11 | Kolchinsky Peter | Insider | Buy | 1,483 | $37,045 |
Source: SEC Form 4 filings · as of 2026-05-21