10 insiders reported 147 Form 4 transactions for FORMFACTOR INC (FORM) over the past 18 months (most recent 2026-06-16). Recent activity: St Dennis Thomas (Director) Sell 2,800 shares, St Dennis Thomas (Director) Sell 740 shares, SLESSOR MIKE (CEO) Sell 1,399 shares, SLESSOR MIKE (CEO) Sell 767 shares, SLESSOR MIKE (CEO) Sell 400 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-06-16 | St Dennis Thomas | Director | Sell | 2,800 | $424,172 |
| 2026-06-16 | St Dennis Thomas | Director | Sell | 740 | $0 |
| 2026-06-11 | SLESSOR MIKE | CEO | Sell | 1,399 | $164,662 |
| 2026-06-11 | SLESSOR MIKE | CEO | Sell | 767 | $91,273 |
| 2026-06-11 | SLESSOR MIKE | CEO | Sell | 400 | $47,784 |
| 2026-06-11 | SLESSOR MIKE | CEO | Sell | 975 | $117,975 |
| 2026-06-11 | SLESSOR MIKE | CEO | Sell | 4,220 | $513,658 |
| 2026-06-11 | SLESSOR MIKE | CEO | Sell | 2,500 | $306,575 |
| 2026-06-11 | SLESSOR MIKE | CEO | Sell | 1,629 | $200,970 |
| 2026-05-22 | Obregon-Jimenez Rebeca | Director | Sell | 3,828 | $484,146 |
| 2026-05-21 | St Dennis Thomas | Director | Sell | 1,000 | $115,840 |
| 2026-05-21 | WHITE BRIAN C | Director | Sell | 3,250 | $409,500 |
| 2026-05-19 | St Dennis Thomas | Director | Buy | 1,347 | $0 |
| 2026-05-19 | Obregon-Jimenez Rebeca | Director | Buy | 1,347 | $0 |
| 2026-05-19 | Rhodes Sheri | Director | Buy | 1,347 | $0 |
| 2026-05-19 | STEVEN-WAISS KELLEY | Director | Buy | 1,347 | $0 |
| 2026-05-19 | WHITE BRIAN C | Director | Buy | 1,347 | $0 |
| 2026-05-19 | Titinger Jorge | Director | Buy | 1,347 | $0 |
| 2026-05-15 | Titinger Jorge | Director | Sell | 4,009 | $516,299 |
| 2026-05-15 | STEVEN-WAISS KELLEY | Director | Sell | 5,400 | $678,241 |
| 2026-05-14 | SLESSOR MIKE | CEO | Sell | 700 | $85,988 |
| 2026-05-14 | SLESSOR MIKE | CEO | Sell | 1,300 | $160,836 |
| 2026-05-14 | SLESSOR MIKE | CEO | Sell | 2,984 | $372,135 |
| 2026-05-14 | SLESSOR MIKE | CEO | Sell | 1,388 | $174,305 |
| 2026-05-14 | SLESSOR MIKE | CEO | Sell | 398 | $50,383 |
Source: SEC Form 4 filings · as of 2026-06-16