FORM ▲ +1.9% - FormFactor, Inc. $FORM 4P RTB - RTB Digital, Inc. 10% OWNER: Dorsett Jason Christopher P | 11,000 | $8.32 | $91,520 FormFactor stock rose 1.9% today following a Form 4 filing disclosing that 10% owner Jason Christopher P. Dorsett purchased 11,000 shares at $8.32 per share, totaling $91,520. The insider purchase may have signaled confidence in the company's near-term prospects. 23-SEP-2026 01:12 PM ET