X0508 4 2026-01-06 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 1 Common Stock 2026-01-06 4 S 0 2139 76.95 D 90310 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 5,625 RSUs from a January 3, 2025 grant of 22,500 RSUs /s/ Avraham S. Adler, Attorney-in-Fact 2026-01-08