Douglas Kerr sold $116K of DYN stock

Douglas Kerr, Chief Medical Officer of Dyne Therapeutics, Inc. (DYN), sold 5,035 shares of DYN stock worth $116K, per an SEC Form 4 filed Sep 8, 2026.

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

The trade happened on Sep 4, 2026, 4 days before it was made public.

DYN has moved -25.6% since the trade date, from $24.28 to $18.07 (Nov 6, 2026 close).