Michael Schmertzler sold $1.3M of PTCT stock

Michael Schmertzler, Dir of Ptc Therapeutics, Inc. (PTCT), sold 20,000 shares of PTCT stock worth $1.3M, per an SEC Form 4 filed Sep 18, 2026.

The sale was pre-arranged (a 10b5-1 plan or an option exercise), not a fresh decision.

The trade happened on Sep 16, 2026, 2 days before it was made public.

PTCT has moved -6.3% since the trade date, from $67.59 to $63.36 (Nov 12, 2026 close).