X0508 4 2026-02-18 0001070081 PTC THERAPEUTICS, INC. PTCT 0001323212 Pauwels Eric C/O PTC THERAPEUTICS, INC. 500 WARREN CORPORATE CENTER DRIVE WARREN NJ 07059 false true false false CHIEF BUSINESS OFFICER 1 Common Stock 2026-02-18 4 S 0 3019 69.36 D 77122 D Represents shares automatically sold pursuant to an irrevocable sell to cover election entered into upon acceptance of the grant to satisfy tax withholding obligations in connection with the vesting of 5,500 RSUs from a February 15, 2024 grant of 22,000 RSUs and the vesting of 1,150 RSUs from a February 15, 2024 grant of 2,300 RSUs. /s/ Avraham S. Adler, Attorney-in-Fact 2026-02-20