X0508 4 2026-01-06 0001070081 PTC THERAPEUTICS, INC. PTCT 0001686217 Golden Lee Scott C/O PTC THERAPEUTICS, INC. 500 WARREN CORPORATE CENTER DRIVE WARREN NJ 07059 false true false false EVP & CHIEF MEDICAL OFFICER 1 Common Stock 2026-01-06 4 S 0 1340 76.95 D 93936 D Common Stock 2026-01-07 4 S 0 642 77.48 D 93294 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 5,000 RSUs from a January 3, 2025 grant of 20,000 RSUs. 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 2,666 RSUs from a January 5, 2023 grant of 10,640 RSUs. /s/ Avraham S. Adler, Attorney-in-Fact 2026-01-08