| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| HENDERSON MICHAEL THOMAS | Director | 221 CRESCENT STREET, BUILDING 23,, SUITE 105, WALTHAM | /s/ Heidy King-Jones, as Attorney-in-Fact | 2025-06-02 | 0001779990 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Underlying Class | Amount | Exercise Price | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | SYRE | Stock Option (Right to Buy) | Award | $0 | +25K | $0.00 | 25K | May 29, 2025 | Common Stock | 25K | $15.55 | Direct | F1 |
| Id | Content |
|---|---|
| F1 | This option represents a right to purchase 25,000 shares of the Issuer's common stock, which will vest and become exercisable in 12 equal monthly installments following May 29, 2025 until such time as the option is 100% vested, subject to the Reporting Person's continuous service with the Issuer at each vesting date. |