Stock Track | FormFactor Plunges 5.07% in Pre-market After CEO Sells $866,926 in Shares

Stock Track05-15

FormFactor Inc. (FORM) experienced a pre-market plunge of 5.07% on Friday, with the stock declining sharply ahead of the regular trading session.

The sell-off appears to be linked to a regulatory filing showing that CEO Mike Slessor disposed of 8,538 common shares on May 13, 2026, for proceeds totaling approximately $866,926.87. Following the transactions, his holdings were reduced to 447,037 shares. Insider sales by top executives are closely watched by investors and can sometimes trigger negative market sentiment.

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