Stuart Kupinsky sold $87K of MRCY stock

Stuart Kupinsky, EVP, CLO & Corp Sec of Mercury Systems Inc (MRCY), sold 1,000 shares of MRCY stock worth $87K, per an SEC Form 4 filed Sep 23, 2026.

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

The trade happened on Sep 21, 2026, 2 days before it was made public.

MRCY has moved -14.1% since the trade date, from $85.65 to $73.55 (Nov 6, 2026 close).