FORM (FormFactor Inc.)
Insider Trading Activity
Every open-market purchase and sale reported by FORM officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-17 | MIKE SLESSOR | CEO | Sell | — | — |
| 2026-08-10 | Aric Brendan McKinnis | CFO, SVP Global Finance | A | — | — |
| 2026-08-10 | MIKE SLESSOR | CEO | MIXED | — | — |
| 2026-08-07 | MIKE SLESSOR | CEO | MIXED | — | — |
| 2026-08-07 | Aric Brendan McKinnis | CFO, SVP Global Finance | MIXED | — | — |
| 2026-08-07 | Aric Brendan McKinnis | CFO, SVP Global Finance | MIXED | — | — |
| 2026-08-07 | MIKE SLESSOR | CEO | MIXED | — | — |
| 2026-07-16 | MIKE SLESSOR | CEO | Sell | — | — |
| 2026-06-16 | Thomas St Dennis | Director | MIXED | — | — |
| 2026-06-11 | MIKE SLESSOR | CEO | Sell | — | — |
| 2026-06-04 | Sheri Rhodes | Director | Sell | — | — |
| 2026-06-04 | Aric Brendan McKinnis | CFO, SVP Global Finance | MIXED | — | — |
| 2026-05-22 | Rebeca Obregon-Jimenez | Director | Sell | — | — |
| 2026-05-21 | BRIAN C WHITE | Director | Sell | — | — |
| 2026-05-21 | Thomas St Dennis | Director | Sell | — | — |
| 2026-05-19 | KELLEY STEVEN-WAISS | Director | A | — | — |
| 2026-05-19 | Thomas St Dennis | Director | A | — | — |
| 2026-05-19 | Sheri Rhodes | Director | A | — | — |
| 2026-05-19 | Rebeca Obregon-Jimenez | Director | A | — | — |
| 2026-05-19 | BRIAN C WHITE | Director | A | — | — |
| 2026-05-19 | Jorge Titinger | Director | A | — | — |
| 2026-05-15 | Jorge Titinger | Director | Sell | — | — |
| 2026-05-15 | KELLEY STEVEN-WAISS | Director | Sell | — | — |
| 2026-05-14 | MIKE SLESSOR | CEO | Sell | — | — |
| 2026-05-08 | MIKE SLESSOR | CEO | MIXED | — | — |
| 2026-05-07 | MIKE SLESSOR | CEO | MIXED | — | — |
| 2026-05-07 | Aric Brendan McKinnis | CFO, SVP Global Finance | MIXED | — | — |
| 2026-04-15 | MIKE SLESSOR | CEO | Sell | — | — |
| 2026-03-18 | MIKE SLESSOR | CEO | Sell | — | — |
| 2026-03-06 | Aric Brendan McKinnis | CFO, SVP Global Finance | Sell | — | — |
| 2026-03-03 | Aric Brendan McKinnis | CFO, SVP Global Finance | MIXED | — | — |
| 2026-02-25 | BRIAN C WHITE | Director | Sell | — | — |
| 2026-02-18 | MIKE SLESSOR | CEO | Sell | — | — |
| 2026-02-12 | KEVIN J BREWER | Director | Sell | — | — |
| 2026-02-11 | KELLEY STEVEN-WAISS | Director | Sell | — | — |
| 2026-02-11 | Thomas St Dennis | Director | Sell | — | — |
| 2026-02-11 | Sheri Rhodes | Director | Sell | — | — |
| 2026-02-11 | MIKE SLESSOR | CEO | MIXED | — | — |
| 2026-02-10 | Jorge Titinger | Director | Sell | — | — |
| 2026-02-10 | Rebeca Obregon-Jimenez | Director | Sell | — | — |
| 2026-02-10 | BRIAN C WHITE | Director | Sell | — | — |
| 2026-02-09 | Aric Brendan McKinnis | CFO, SVP Global Finance | MIXED | — | — |
| 2026-02-09 | MIKE SLESSOR | CEO | MIXED | — | — |
| 2026-01-15 | MIKE SLESSOR | CEO | Sell | — | — |
| 2026-01-06 | MIKE SLESSOR | CEO | Sell | — | — |
| 2025-12-17 | MIKE SLESSOR | CEO | Sell | — | — |
| 2025-12-03 | Aric Brendan McKinnis | CFO, SVP Global Finance | MIXED | — | — |
| 2025-12-02 | KELLEY STEVEN-WAISS | Director | Sell | — | — |
| 2025-11-19 | MIKE SLESSOR | CEO | Sell | — | — |
| 2025-11-17 | Thomas St Dennis | Director | Sell | — | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| — | CEO | 2,309,499 | — |
| — | CEO | 484,204 | — |
| — | SR VP, CFO | 240,387 | — |
| — | SR VP GENERAL COUNSEL | 81,812 | — |
| — | Director | 74,333 | — |
| — | Director | 66,225 | — |
| — | Director | 61,098 | — |
| — | Director | 56,864 | — |
| — | CFO, SVP Global Finance | 55,968 | — |
| — | Director | 41,875 | — |
| — | Director | 39,748 | — |
| — | President | 36,887 | — |
| — | Director | 26,526 | — |
| — | Director | 25,000 | — |
| — | Director | 18,770 | — |
| — | CEO | 16,205 | — |
| — | Director | 15,000 | — |
| — | Director | 14,836 | — |
| — | CFO, SVP Global Finance | 14,426 | — |
| — | Director | 12,000 | — |
| — | Director | 8,653 | — |
| — | Director | 8,105 | — |
| — | Director | 7,875 | — |
| — | Director | 5,375 | — |
| — | Director | 5,109 | — |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the FORM quote page; the site-wide leaderboard is on the insider transactions hub.