| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Hallal David | Chief Executive Officer, Director | 301 BINNEY STREET, CAMBRIDGE | /s/ Junlin Ho, Attorney-in-Fact for David Hallal | 09 Oct 2025 | 0001457477 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | SRRK | Common Stock | Gift | $0 | -205,000 | -11% | $0.000000 | 1,599,095 | 08 Oct 2025 | Direct | F1, F2 |
| holding | SRRK | Common Stock | 205,000 | 08 Oct 2025 | By trust | F1 |
| Id | Content |
|---|---|
| F1 | On October 8, 2025, the Reporting Person transferred 205,000 shares of the Issuer's Common Stock to the Hallal Family Irrevocable Trust - 2012 dated November 19, 2012 (the "Hallal Trust") for no consideration. The Reporting Person's spouse serves as a trustee of the Hallal Trust. The Reporting Person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these shares in this report shall not be deemed an admission of beneficial ownership of all of the reported shares for purposes of Section 16 or for any other purpose. |
| F2 | Consists of 99,095 shares of Common Stock and 1,500,000 restricted stock units. |