SEC Form 4 · accession 0001628280-26-042611
FORMFACTOR INC · FORM
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Mike Slessor
Officer — CEO · Director
Period of report
Jun 10, 2026
Accepted (ET)
Jun 11, 2026 · 7:05 pm EDT
Rule 10b5-1 plan
yes — trade under a plan
Issuer CIK
0001039399
Table I — non-derivative securities
| Security | Date | Code | Shares | Price | A/D | Owned after | D/I | Nature of ownership |
|---|---|---|---|---|---|---|---|---|
| Common StockF1,F2 | Jun 10, 2026 | S | 1,399 | $117.70 | D | 445,638 | D | |
| Common StockF1 | Jun 10, 2026 | S | 767 | $119.00 | D | 444,871 | D | |
| Common StockF1 | Jun 10, 2026 | S | 400 | $119.46 | D | 444,471 | D | |
| Common StockF1 | Jun 10, 2026 | S | 975 | $121.00 | D | 443,496 | D | |
| Common StockF1,F3 | Jun 10, 2026 | S | 4,220 | $121.72 | D | 439,276 | D | |
| Common StockF1,F4 | Jun 10, 2026 | S | 2,500 | $122.63 | D | 436,776 | D | |
| Common StockF1,F5 | Jun 10, 2026 | S | 1,629 | $123.37 | D | 435,147 | D |
Table II — derivative securities
No Table II lines on this filing.
Explanation of responses
- F1The reported sale of shares occurred automatically pursuant to a Rule 10b5-1 trading plan adopted on August 19, 2025.
- F2Price represents the weighted average sale price for the transaction reported. Price range of shares sold is $117.14 through $117.87. Reporting person undertakes to provide upon request by the SEC staff or a security holder of the Issuer, full information regarding the number of shares sold at each separate price.
- F3Price represents the weighted average sale price for the transaction reported. Price range of shares sold is $121.22 through $122.04. Reporting person undertakes to provide upon request by the SEC staff or a security holder of the Issuer, full information regarding the number of shares sold at each separate price.
- F4Price represents the weighted average sale price for the transaction reported. Price range of shares sold is $122.25 through $123. Reporting person undertakes to provide upon request by the SEC staff or a security holder of the Issuer, full information regarding the number of shares sold at each separate price.
- F5Price represents the weighted average sale price for the transaction reported. Price range of shares sold is $123.365 through $123.39. Reporting person undertakes to provide upon request by the SEC staff or a security holder of the Issuer, full information regarding the number of shares sold at each separate price.