| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| SOUTHWELL DAVID P | Director | C/O PTC THERAPEUTICS, INC., 500 WARREN CORPORATE CENTER DRIVE, WARREN | /s/ Avraham S. Adler, Attorney-in-Fact | 11 Sep 2025 | 0001251553 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | PTCT | Common Stock | Options Exercise | $370,320 | +12,000 | +71% | $30.86 | 28,850 | 09 Sep 2025 | Direct | |
| transaction | PTCT | Common Stock | Sale | $700,080 | -12,000 | -42% | $58.34 | 16,850 | 09 Sep 2025 | Direct | F1 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Underlying Class | Amount | Exercise Price | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | PTCT | Stock Option (Right to Buy) | Options Exercise | $0 | -12,000 | -100% | $0.000000 | 0 | 09 Sep 2025 | Common Stock | 12,000 | $30.86 | Direct | F2 |
| Id | Content |
|---|---|
| F1 | This price represents the weighted average price of sale transactions that were executed in multiple trades at prices ranging from $58.31 to $58.45 per share. The Reporting Person hereby undertakes, upon request by the SEC staff, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price. |
| F2 | Currently exercisable. |