| 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 | 11 Feb 2026 | 0001457477 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | SRRK | Common Stock | Award | $0 | +128,004 | +8.3% | $0.000000 | 1,669,649 | 09 Feb 2026 | Direct | F1, F2 |
| holding | SRRK | Common Stock | 205,000 | 09 Feb 2026 | By trust | F3 |
| Id | Content |
|---|---|
| F1 | Represents restricted stock units ("RSUs") subject to time-based vesting conditions. Each RSU represents the contingent right to receive, upon vesting of the RSU, one share of the Issuer's common stock. The shares subject to this RSU vest in four annual installments over four years, with the first annual installment to vest on January 15, 2027 and each additional installment to vest annually thereafter; provided the reporting person continues to have a service relationship with the Issuer on each such vesting date. |
| F2 | Consists of 166,645 shares of common stock, 378,004 RSUs subject to time-based vesting conditions and 1,125,000 RSUs subject to performance- and time-based vesting conditions. |
| F3 | Shares owned by 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. |