| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Arbuckle Stuart A | Director | 675 WEST KENDALL STREET, HENRI A. TERMEER SQUARE, CAMBRIDGE | By: Brett Budzinski, Attorney-in-Fact For: Stuart A. Arbuckle | 07 Jan 2026 | 0001557290 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Underlying Class | Amount | Exercise Price | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | ALNY | Stock Option (right to buy) | Award | $0 | +3,279 | $0.000000 | 3,279 | 05 Jan 2026 | Common Stock | 3,279 | $397.83 | Direct | F1 |
| Id | Content |
|---|---|
| F1 | The stock option will vest as to one third of the shares on each of the first, second and third anniversaries of the date of grant. |