SEC Form 4 · accession 0001578850-26-000017
PTC THERAPEUTICS, INC. · PTCT
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Neil Gregory Almstead
Officer — CHIEF TECHNICAL OPS OFFICER
Period of report
Jun 24, 2026
Accepted (ET)
Jun 26, 2026 · 5:20 pm EDT
Rule 10b5-1 plan
yes — trade under a plan
Issuer CIK
0001070081
Table I — non-derivative securities
| Security | Date | Code | Shares | Price | A/D | Owned after | D/I | Nature of ownership |
|---|---|---|---|---|---|---|---|---|
| Common Stock | Jun 24, 2026 | M | 401 | $38.10 | A | 60,538 | D | |
| Common StockF2 | Jun 24, 2026 | S | 401 | $85.01 | D | 60,137 | D | |
| Common Stock | Jun 24, 2026 | M | 4,922 | $38.10 | A | 65,059 | D | |
| Common StockF3 | Jun 24, 2026 | S | 4,922 | $85.03 | D | 60,137 | D | |
| Common Stock | Jun 25, 2026 | M | 1,001 | $38.10 | A | 61,138 | D | |
| Common StockF4 | Jun 25, 2026 | S | 582 | $85.24 | D | 60,556 | D | |
| Common StockF5 | Jun 25, 2026 | S | 419 | $86.39 | D | 60,137 | D | |
| Common Stock | Jun 25, 2026 | M | 19,859 | $38.10 | A | 79,996 | D | |
| Common StockF6 | Jun 25, 2026 | S | 8,522 | $85.26 | D | 71,474 | D | |
| Common StockF7 | Jun 25, 2026 | S | 11,337 | $86.51 | D | 60,137 | D | |
| Common Stock | Jun 25, 2026 | M | 100 | $39.42 | A | 60,237 | D | |
| Common Stock | Jun 25, 2026 | S | 100 | $87.00 | D | 60,137 | D |
Table II — derivative securities
| Security | Conv. / exercise price | Date | Code | Shares | A/D | Exercisable | Expires | Underlying | Underlying shares | Owned after | D/I |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Stock Option (Right to Buy)F8 | $38.10 | Jun 24, 2026 | M | 401 | D | — | Jan 6, 2032 | Common Stock | 401 | 53,599 | D |
| Stock Option (Right to Buy)F8 | $38.10 | Jun 24, 2026 | M | 4,922 | D | — | Jan 6, 2032 | Common Stock | 4,922 | 48,677 | D |
| Stock Option (Right to Buy)F8 | $38.10 | Jun 25, 2026 | M | 1,001 | D | — | Jan 6, 2032 | Common Stock | 1,001 | 47,676 | D |
| Stock Option (Right to Buy)F8 | $38.10 | Jun 25, 2026 | M | 19,859 | D | — | Jan 6, 2032 | Common Stock | 19,859 | 27,817 | D |
| Stock Option (Right to Buy)F9 | $39.42 | Jun 25, 2026 | M | 100 | D | — | Jan 4, 2033 | Common Stock | 100 | 36,150 | D |
Explanation of responses
- F1This transaction was effected pursuant to a written Rule 10b5-1 plan adopted by the reporting person on November 11, 2025.
- F2This price represents the weighted average price of sale transactions that were executed in multiple trades at prices ranging from $85.00 to $85.03 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.
- F3This price represents the weighted average price of sale transactions that were executed in multiple trades at prices ranging from $85.00 to $85.14 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.
- F4This price represents the weighted average price of sale transactions that were executed in multiple trades at prices ranging from $85.00 to $85.84 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.
- F5This price represents the weighted average price of sale transactions that were executed in multiple trades at prices ranging from $86.23 to $86.59 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.
- F6This price represents the weighted average price of sale transactions that were executed in multiple trades at prices ranging from $85.00 to $85.98 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.
- F7This price represents the weighted average price of sale transactions that were executed in multiple trades at prices ranging from $86.02 to $86.97 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.
- F8Currently exercisable.
- F9This option was granted on January 5, 2023, and vests over four years, with 25% of the shares underlying the option vesting on January 5, 2024, and an additional 6.25% of the original number of shares underlying the option vesting at the end of each successive three-month period thereafter, beginning on April 5, 2024.