| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Peng Katie | Director | 301 BINNEY STREET, CAMBRIDGE | /s/ Junlin Ho, Attorney-in-Fact for Katie Peng | 2025-05-23 | 0001983850 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | SRRK | Common Stock | Award | $0 | +7.63K | +25.17% | $0.00 | 38K | May 22, 2025 | Direct | F1, F2 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Underlying Class | Amount | Exercise Price | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | SRRK | Stock Option (Right to Buy) | Award | $0 | +9.21K | $0.00 | 9.21K | May 22, 2025 | Common Stock | 9.21K | $30.46 | Direct | F3 |
| Id | Content |
|---|---|
| F1 | Each restricted stock unit ("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 on the earlier of June 15, 2026 or on the date of the Issuer's next Annual Meeting subject to continued service to the Issuer through such date. |
| F2 | Consists of 14,671 shares of Common Stock and 23,280 RSUs. |
| F3 | Options to vest and become fully exercisable on the earlier of the first anniversary following the date of grant or on the date of the Issuer's next Annual Meeting subject to continued service to the Issuer through such date. |