FORM insider trading — Formfactor Inc
Over the last 90 days, insiders at Formfactor Inc (FORM) made 0 open-market purchases worth $0 and 1 open-market sale worth $202K, making them net sellers by $202K. The largest sale was by Steven-Waiss Kelley (Director), who sold 2,100 shares for $202K on Sep 3, 2026.
Updated Oct 16, 2026.
Recent FORM insider transactions
Every Form 4 filed by Formfactor Inc officers, directors and 10% owners in the last 90 days, newest first. P = open-market purchase, S = open-market sale; other codes are awards, option exercises, tax withholding or gifts.
| Trade date | Insider | Role | Type | Ownership | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|---|
| Oct 14, 2026 | Slessor Mike | CEO | S · Sale · 10b5-1 | Direct | 11,098 | $125.20 | $1.39M | Form 4 |
| Sep 16, 2026 | Slessor Mike | CEO | S · Sale · 10b5-1 | Direct | 17,510 | $104.73 | $1.83M | Form 4 |
| Sep 3, 2026 | Steven-Waiss Kelley | Director | S · Sale | Direct | 2,100 | $96.10 | $202K | Form 4 |
| Aug 14, 2026 | Slessor Mike | CEO | S · Sale · 10b5-1 | Direct | 16,002 | $130.95 | $2.10M | Form 4 |
| Aug 7, 2026 | Slessor Mike | CEO | M · Option exercise | Direct | 147,700 | — | — | Form 4 |
| Aug 7, 2026 | Slessor Mike | CEO | F · Tax withholding | Direct | 82,196 | $117.39 | $9.65M | Form 4 |
| Aug 6, 2026 | Slessor Mike | CEO | M · Option exercise | Direct | 6,031 | — | — | Form 4 |
| Aug 6, 2026 | Slessor Mike | CEO | F · Tax withholding | Direct | 3,357 | $115.21 | $387K | Form 4 |
| Aug 5, 2026 | Slessor Mike | CEO | M · Option exercise | Direct | 3,644 | — | — | Form 4 |
| Aug 5, 2026 | Slessor Mike | CEO | F · Tax withholding | Direct | 2,028 | $114.44 | $232K | Form 4 |
| Aug 6, 2026 | Mckinnis Aric Brendan | CFO, SVP Global Finance | M · Option exercise | Direct | 1,099 | — | — | Form 4 |
| Aug 6, 2026 | Mckinnis Aric Brendan | CFO, SVP Global Finance | F · Tax withholding | Direct | 274 | $115.21 | $32K | Form 4 |
| Aug 5, 2026 | Mckinnis Aric Brendan | CFO, SVP Global Finance | M · Option exercise | Direct | 521 | — | — | Form 4 |
| Aug 5, 2026 | Mckinnis Aric Brendan | CFO, SVP Global Finance | F · Tax withholding | Direct | 130 | $114.44 | $15K | Form 4 |
FORM insider trading FAQ
Are insiders buying FORM stock?
Not on the open market. In the last 90 days, Formfactor Inc insiders made no open-market purchases, and 1 open-market sale totaling $202K. Purchases with the insider's own money are generally seen as a stronger signal than sales, which happen for many reasons (taxes, diversification, planned 10b5-1 sales).
Who are the insiders trading FORM?
Recent sellers: Steven-Waiss Kelley.
Where does FORM insider trading data come from?
Every transaction comes from SEC Form 4 filings on EDGAR. Company officers, directors and 10% owners must file a Form 4 within two business days of buying or selling. InsiderBolt reads these filings directly from the SEC.
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Insider trading data is for informational purposes only and is not investment advice. Filings can be amended; always confirm details on SEC EDGAR.