FORM
Formfactor Inc
28 disclosed insider filings · 3 distinct insiders · latest Sep 17, 2026
Total filings
28
3 insiders
Insider buys
0
$0
Insider sells
16
$4.7M
Grants & other
0
$0
All disclosed filings
Same-day tranches are grouped per insider - the Lots column shows how many individual executions a row covers; Price is the value-weighted average.
| Filed | Tx date | Insider | Type | Qty | Avg price | Value | Lots | Source |
|---|---|---|---|---|---|---|---|---|
| Sep 17, 2026 | Sep 16, 2026 | Mike Slessor OFFICER | SELL | 17,510 | $104.73 | $1.8M | 3 | EDGAR |
| Sep 4, 2026 | Sep 3, 2026 | Kelley Steven-waiss DIRECTOR | SELL | 2,100 | $96.1 | $202K | — | EDGAR |
| Aug 17, 2026 | Aug 14, 2026 | Mike Slessor OFFICER | SELL | 16,002 | $130.95 | $2.1M | 6 | EDGAR |
| Aug 10, 2026 | Aug 7, 2026 | Mike Slessor OFFICER | OTHER | 229,896 | $41.97 | $9.6M | 4 | EDGAR |
| Aug 7, 2026 | Aug 6, 2026 | Mike Slessor OFFICER | OTHER | 9,388 | $41.2 | $387K | 2 | EDGAR |
| Aug 7, 2026 | Aug 6, 2026 | Aric Brendan Mckinnis OFFICER | OTHER | 1,373 | $22.99 | $32K | 2 | EDGAR |
| Aug 7, 2026 | Aug 5, 2026 | Mike Slessor OFFICER | OTHER | 5,672 | $40.92 | $232K | 2 | EDGAR |
| Aug 7, 2026 | Aug 5, 2026 | Aric Brendan Mckinnis OFFICER | OTHER | 651 | $22.85 | $15K | 2 | EDGAR |
| Jul 16, 2026 | Jul 15, 2026 | Mike Slessor OFFICER | SELL | 4,735 | $118.31 | $560K | 6 | EDGAR |