10 insiders reported 164 Form 4 transactions for FORMFACTOR INC (FORM) over the past 18 months (most recent 2026-08-17). Recent activity: SLESSOR MIKE (CEO) Sell 2,482 shares, SLESSOR MIKE (CEO) Sell 2,892 shares, SLESSOR MIKE (CEO) Sell 3,282 shares, SLESSOR MIKE (CEO) Sell 1,125 shares, SLESSOR MIKE (CEO) Sell 5,535 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-17 | SLESSOR MIKE | CEO | Sell | 2,482 | $319,483 |
| 2026-08-17 | SLESSOR MIKE | CEO | Sell | 2,892 | $374,659 |
| 2026-08-17 | SLESSOR MIKE | CEO | Sell | 3,282 | $428,432 |
| 2026-08-17 | SLESSOR MIKE | CEO | Sell | 1,125 | $148,106 |
| 2026-08-17 | SLESSOR MIKE | CEO | Sell | 5,535 | $733,388 |
| 2026-08-17 | SLESSOR MIKE | CEO | Sell | 686 | $91,464 |
| 2026-08-10 | SLESSOR MIKE | CEO | Buy | 141,792 | $0 |
| 2026-08-10 | SLESSOR MIKE | CEO | Sell | 78,908 | $9.3M |
| 2026-08-10 | SLESSOR MIKE | CEO | Buy | 5,908 | $0 |
| 2026-08-10 | SLESSOR MIKE | CEO | Sell | 3,288 | $385,978 |
| 2026-08-07 | SLESSOR MIKE | CEO | Sell | 2,028 | $232,084 |
| 2026-08-07 | McKinnis Aric Brendan | CFO, SVP Global Finance | Buy | 521 | $0 |
| 2026-08-07 | SLESSOR MIKE | CEO | Buy | 3,644 | $0 |
| 2026-08-07 | McKinnis Aric Brendan | CFO, SVP Global Finance | Sell | 130 | $14,877 |
| 2026-08-07 | SLESSOR MIKE | CEO | Buy | 6,031 | $0 |
| 2026-08-07 | McKinnis Aric Brendan | CFO, SVP Global Finance | Buy | 1,099 | $0 |
| 2026-08-07 | SLESSOR MIKE | CEO | Sell | 3,357 | $386,760 |
| 2026-08-07 | McKinnis Aric Brendan | CFO, SVP Global Finance | Sell | 274 | $31,568 |
| 2026-07-16 | SLESSOR MIKE | CEO | Sell | 1,041 | $121,339 |
| 2026-07-16 | SLESSOR MIKE | CEO | Sell | 1,650 | $193,694 |
| 2026-07-16 | SLESSOR MIKE | CEO | Sell | 706 | $83,456 |
| 2026-07-16 | SLESSOR MIKE | CEO | Sell | 170 | $20,244 |
| 2026-07-16 | SLESSOR MIKE | CEO | Sell | 300 | $36,174 |
| 2026-07-16 | SLESSOR MIKE | CEO | Sell | 868 | $105,288 |
| 2026-06-16 | St Dennis Thomas | Director | Sell | 2,800 | $424,172 |
Source: SEC Form 4 filings · as of 2026-08-17