Mike Slessor, CEO of FormFactor (FORM), has been a consistent seller of company stock over the past year. SEC Form 4 filings show 88 total transactions across two companies, with zero open-market purchases and $12.89 million in total sales. The recent pattern is one-sided: 15 sales in the last reporting period and no buys.
The most recent activity clustered on August 14, 2026, when Slessor executed six open-market sales in FORM totaling roughly $2.1 million. Individual transactions ranged from $91,464 to $733,388. Earlier sales on July 15 totaled about $560,000 across six trades, and June 10 saw three sales worth approximately $1.02 million. These are all code "S" transactions, meaning direct sales on the open market.
The August 7 filings also show a large tax withholding event: code "F" transactions valued at $9.26 million and $386,000, paired with code "M" option exercises valued at zero. Those are mechanical events tied to equity compensation, not discretionary trades. A grant of shares (code "A") on August 6 and 7 also carried no cash value.
Slessor's selling is consistent and recurring, but it follows a standard executive pattern: periodic option exercises, automatic share withholding for taxes, and subsequent open-market sales. The absence of any code "P" purchases means he has not added shares with his own money during this period. The sales are spread across multiple dates rather than concentrated in a single event, which suggests a scheduled or systematic approach to monetizing equity awards.
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