| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Howton David T | Chief Operating Officer | C/O SOLID BIOSCIENCES INC., 500 RUTHERFORD AVENUE, THIRD FLOOR, CHARLESTOWN | /s/ Kimberly Cornwell as attorney-in-fact for David Tyronne Howton | 18 Aug 2025 | 0001529297 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Underlying Class | Amount | Exercise Price | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | SLDB | Employee Stock Option (Right to Buy) | Award | $0 | +150,000 | $0.000000 | 150,000 | 14 Aug 2025 | Common Stock | 150,000 | $6.17 | Direct | F1 | |
| transaction | SLDB | Restricted Stock Units | Award | $0 | +75,000 | $0.000000 | 75,000 | 14 Aug 2025 | Common Stock | 75,000 | Direct | F1, F2 |
| Id | Content |
|---|---|
| F1 | The RSUs (as defined in footnote 2) together with this option were granted on August 14, 2025 (the "Grant Date") and vest over four years, with 50% of the original number of shares vesting on the second anniversary of the Grant Date and 25% of the original number of shares annually thereafter until the fourth such anniversary. |
| F2 | Each restricted stock unit represents a contingent right to receive one share of the issuer's common stock (the "RSUs"). |