144 0001288952 XXXXXXXX LIVE 0001070081 PTC THERAPEUTICS, INC. 001-35969 500 Warren Corporate Center Drive Warren NJ 07059 9082227000 Michael Schmertzler Director Common Merrill Lynch 225 Liberty Street Fl 39 New York NY 10281 50000 3650000 83460802 08/19/2026 NASDAQ Common 07/04/2012 Open Market Section Six Partners, LP N 50000 06/25/2013 Cash Y 08/19/2026 05/13/2026 Michael Schmertzler, as President of S6 GP Holding, LLC, the General Partner of, and on behalf of, Section Six Partners, LP