X0508 4 2026-01-02 0001070081 PTC THERAPEUTICS, INC. PTCT 0001984065 Gravier Pierre C/O PTC THERAPEUTICS, INC. 500 WARREN CORPORATE CENTER DRIVE WARREN NJ 07059 false true false false CHIEF FINANCIAL OFFICER 0 Common Stock 2026-01-02 4 A 0 20000 0 A 92449 D Stock Option (Right to Buy) 76.74 2026-01-02 4 A 0 50000 0 A 2036-01-01 Common Stock 50000 50000 D Restricted stock units granted on January 2, 2026 that vest in four equal installments over four years, commencing on January 2, 2027. Includes 272 shares of common stock acquired under the Issuer's employee stock purchase plan for the period ended June 30, 2025, and 257 shares of common stock acquired under the Issuer's employee stock purchase plan for the period ended December 31, 2025. This option was granted on January 2, 2026, and vests over four years, with 25% of the shares underlying the option vesting on January 2, 2027, 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 2, 2027. /s/ Avraham S. Adler, Attorney-in-Fact 2026-01-06