Ownership & Insider Lab
FORMFACTOR INC (FORM)
Nasdaq · SEC CIK 0001039399
This is the supported SEC-traceable subset, not total insider ownership or personal wealth. Values reflect the current disclosed positions Grizzly Bulls can resolve and value. Latest source filing: Sep 17, 2026 · values through Sep 25, 2026.
Covered reporting owners
Filter the reporting-owner snapshot by holder, role, or security. Position values are shown only where the current reviewed data supports them.
| Holder | Role | Position | Current value | Latest filing |
|---|---|---|---|---|
| Mike Slessor | CEO · Director | 466,694 sharesCommon stock, $0.001 par value | $60.52M | Sep 17, 2026 |
| Aric Brendan Mckinnis | CFO, SVP Global Finance | 14,152 sharesCommon stock, $0.001 par value | $1.84M | Aug 7, 2026 |
Recent supported insider transactions
These are supported direct, non-derivative historical transactions from companies where recent transaction history has passed separate review. Reported price is shown when present. The lab does not calculate gross proceeds and does not treat historical transactions as current wealth.
| Date | Holder | Action | Security | Units | Reported price | Filing |
|---|---|---|---|---|---|---|
| Sep 16, 2026 | Mike Slessor | SaleSEC code S | Common stock, $0.001 par value | 1,000 shares | $105.8 | 4 |
| Sep 16, 2026 | Mike Slessor | SaleSEC code S | Common stock, $0.001 par value | 7,773 shares | $105.12 | 4 |
| Sep 16, 2026 | Mike Slessor | SaleSEC code S | Common stock, $0.001 par value | 8,737 shares | $104.26 | 4 |
| Aug 14, 2026 | Mike Slessor | SaleSEC code S | Common stock, $0.001 par value | 686 shares | $133.33 | 4 |
| Aug 14, 2026 | Mike Slessor | SaleSEC code S | Common stock, $0.001 par value | 5,535 shares | $132.5 | 4 |
| Aug 14, 2026 | Mike Slessor | SaleSEC code S | Common stock, $0.001 par value | 1,125 shares | $131.65 | 4 |
| Aug 14, 2026 | Mike Slessor | SaleSEC code S | Common stock, $0.001 par value | 3,282 shares | $130.54 | 4 |
| Aug 14, 2026 | Mike Slessor | SaleSEC code S | Common stock, $0.001 par value | 2,892 shares | $129.55 | 4 |
| Aug 14, 2026 | Mike Slessor | SaleSEC code S | Common stock, $0.001 par value | 2,482 shares | $128.72 | 4 |
| Aug 7, 2026 | Mike Slessor | DispositionSEC code F | Common stock, $0.001 par value | 3,288 shares | $117.39 | 4 |
| Aug 7, 2026 | Mike Slessor | AcquisitionSEC code M | Common stock, $0.001 par value | 5,908 shares | $0 | 4 |
| Aug 7, 2026 | Mike Slessor | DispositionSEC code F | Common stock, $0.001 par value | 78,908 shares | $117.39 | 4 |
Published 12 of 34 source candidates under the current reviewed security-resolution rules.
Covered securities
| Security | Instrument family | Covered positions | Covered value |
|---|---|---|---|
| Common stock, $0.001 par value | ordinary-share | 2 | $62.35M |
Coverage and interpretation
Current holdings: direct positions that the reviewed ownership data can trace to an exact reporting owner, legal security, and current-basis quantity.
Current value: the existing published company-position valuation. This lab does not recalculate security values or infer missing positions.
Transactions: historical flow observations only. They are not used to reconstruct current ownership and are shown only for companies where recent transaction history is currently published.
Not included here: a claim of total insider ownership, total personal wealth, institutional 13F ownership, or an investment recommendation.