SEC Form 4 · accession 0001578850-26-000021
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
Jul 6, 2026
Accepted (ET)
Jul 8, 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 StockF2 | Jul 6, 2026 | M | 811 | $38.10 | A | 61,110 | D | |
| Common StockF3 | Jul 6, 2026 | S | 426 | $85.28 | D | 60,684 | D | |
| Common StockF4 | Jul 6, 2026 | S | 385 | $86.34 | D | 60,299 | D | |
| Common Stock | Jul 6, 2026 | M | 18,876 | $38.10 | A | 79,175 | D | |
| Common StockF5 | Jul 6, 2026 | S | 8,786 | $85.35 | D | 70,389 | D | |
| Common StockF6 | Jul 6, 2026 | S | 10,090 | $86.32 | D | 60,299 | D | |
| Common Stock | Jul 6, 2026 | M | 2,474 | $39.42 | A | 62,773 | D | |
| Common StockF7 | Jul 6, 2026 | S | 2,474 | $87.03 | D | 60,299 | D | |
| Common Stock | Jul 7, 2026 | M | 24,613 | $39.42 | A | 84,912 | D | |
| Common StockF8 | Jul 7, 2026 | S | 3,956 | $87.17 | D | 80,956 | D | |
| Common StockF9 | Jul 7, 2026 | S | 11,369 | $89.03 | D | 69,587 | D | |
| Common StockF10 | Jul 7, 2026 | S | 9,288 | $89.44 | D | 60,299 | D | |
| Common StockF2 | holding | — | — | — | 2,899 | I | By Spouse |
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)F11 | $38.10 | Jul 6, 2026 | M | 811 | D | — | Jan 6, 2032 | Common Stock | 811 | 18,876 | D |
| Stock Option (Right to Buy)F11 | $38.10 | Jul 6, 2026 | M | 18,876 | D | — | Jan 6, 2032 | Common Stock | 18,876 | 0 | D |
| Stock Option (Right to Buy)F12 | $39.42 | Jul 6, 2026 | M | 2,474 | D | — | Jan 4, 2033 | Common Stock | 2,474 | 33,676 | D |
| Stock Option (Right to Buy)F12 | $39.42 | Jul 7, 2026 | M | 24,613 | D | — | Jan 4, 2033 | Common Stock | 24,613 | 9,063 | 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.
- F10This price represents the weighted average price of sale transactions that were executed in multiple trades at prices ranging from $89.29 to $89.75 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.
- F11Currently exercisable.
- F12This 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.
- F2Includes 162 shares of common stock acquired under the Issuer's employee stock purchase plan for the period ended June 30, 2026.
- F3This price represents the weighted average price of sale transactions that were executed in multiple trades at prices ranging from $85.00 to $85.95 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 $86.02 to $86.73 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 $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.
- F6This price represents the weighted average price of sale transactions that were executed in multiple trades at prices ranging from $86.03 to $86.74 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 $87.00 to $87.07 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.
- F8This price represents the weighted average price of sale transactions that were executed in multiple trades at prices ranging from $87.00 to $87.81 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.
- F9This price represents the weighted average price of sale transactions that were executed in multiple trades at prices ranging from $88.29 to $89.28 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.