Mike Slessor sold $1.8M of FORM stock

Mike Slessor, CEO of Formfactor Inc (FORM), sold 17,510 shares of FORM stock worth $1.8M, per an SEC Form 4 filed Sep 17, 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, 1 day before it was made public.

FORM has moved -8.6% since the trade date, from $104.82 to $95.78 (Nov 11, 2026 close).