Form 4: FormFactor CEO Sells Shares Under 10b5-1 Plan

FormFactor CEO Mike Slessor sold 7,669 shares of common stock on December 17, 2025, through a pre-arranged 10b5-1 trading plan.

Summary

• Mike Slessor, CEO and Director of FormFactor Inc. (FORM), reported the sale of 7,669 shares of common stock.
• The sales occurred on December 17, 2025, in two separate transactions.
• The first transaction involved 5,606 shares sold at a weighted average price of $56.19 per share, with a price range of $55.725 to $56.715.
• The second transaction involved 2,063 shares sold at a weighted average price of $56.82 per share, with a price range of $56.72 to $56.8575.
• These sales were executed automatically pursuant to a Rule 10b5-1 trading plan adopted on August 19, 2025.
• Following these transactions, Mike Slessor beneficially owns 525,601 shares of FormFactor common stock.

Sentiment

Score: 5

Explanation: The transaction is a pre-planned sale under a Rule 10b5-1 plan, which is generally considered a neutral event for stock sentiment as it's often for personal financial management rather than a signal about the company's immediate prospects.

Industry Context

This filing reports a routine insider transaction and does not provide information related to broader industry trends or competitive landscape.

Stakeholder Impact

• Shareholders: The sale represents a minor reduction in the CEO's direct ownership, but as it's a pre-planned 10b5-1 transaction, it typically has minimal impact on investor confidence or perception of company health.

Key Dates

Recommendation

The reported transaction is a pre-scheduled sale under a Rule 10b5-1 trading plan, which is a common practice for corporate insiders for personal financial planning and diversification. It does not typically indicate a change in the company's fundamental outlook or the insider's long-term confidence in the business. Therefore, this filing alone does not warrant a change from a 'hold' recommendation.

Keywords

FormFactor, FORM, Mike Slessor, Insider Sale, 10b5-1 Plan, Common Stock, CEO, Director