SLESSOR MIKE sold $2.1M of FORM
SLESSOR MIKE (CEO) sold 16,002 shares of FORMFACTOR INC (FORM) at an average of $130.95 ($128.72–$133.33, $2.10M total) across 6 trades on 2026-08-14 under a Rule 10b5-1 trading plan.
How this was made
The 30-second read
Why it matters
The newest fact is the disclosed open-market sale amount, share count, price range, and confirmation that it was executed under a pre-arranged 10b5-1 plan.
Market read
Traders may monitor for follow-on insider buying or additional sales, but this filing alone does not change fundamentals.
What to watch
The filing does not disclose motivations, tax planning, or whether other insiders are buying; without follow-on insider activity, the signal is incomplete.
Background
This is an SEC Form 4 insider transaction for FormFactor Inc, reported by CEO Mike Slessor.
Ticker impact
FormFactor CEO Mike Slessor sold about $2.10M of FORM shares in an open-market transaction under a pre-arranged 10b5-1 plan.
Likely limited near-term impact; any effect is more about sentiment/positioning than fundamentals.
FormFactor’s Form 4 discloses the sale size, dates, and 10b5-1 status, but provides no new operating, guidance, or regulatory information that would directly reprice the business.
Market effects
No sector-wide read-through is provided beyond routine insider activity.
None indicated.
None indicated.
Counterpoint
Because the sale is 10b5-1 pre-arranged, it may reflect planned liquidity rather than bearish expectations, so traders may discount it.
Key entities
- issuerFORM
FormFactor Inc, the company whose shares were sold by its CEO.
- insiderSLESSOR MIKE
CEO and officer/director who sold shares under a Rule 10b5-1 plan.




