FORM ▲ +4.2% - FormFactor, Inc. $FORM 4P - TNC - TENNANT CO* DIRECTOR|OFFICER|10% OWNER|OTHER: ALLEN PATRICK E P | 3,000 | $69.417 | $208,250 FormFactor rose 4.2% today following a Form 4 filing disclosing that director or officer Patrick E. Allen purchased 3,000 shares at $69.417 per share, totaling $208,250. Insider buying of this scale can signal confidence in the company's near-term prospects. 23-SEP-2026 04:28 PM ET