John W Kosiba Jr sold $1.9M of AMSC stock

John W Kosiba Jr, SVP, CFO & Treasurer of American Superconductor Corp (AMSC), sold 36,909 shares of AMSC stock worth $1.9M, per an SEC Form 4 filed Jun 3, 2026.

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

The trade happened on Jun 1, 2026, 2 days before it was made public.

AMSC has moved -54.3% since the trade date, from $51.15 to $23.39 (Nov 6, 2026 close).