MIKE SLESSOR - 18 Feb 2026 Form 4 Insider Report for FORMFACTOR INC (FORM)

Role
CEO, Director
Signature
/s/ Stan Finkelstein, Attorney-in-fact for Mike Slessor
Issuer symbol
FORM
Transactions as of
18 Feb 2026
Net transactions value
-$815,597
Form type
4
Filing time
18 Feb 2026, 19:41:14 UTC
Previous filing
11 Feb 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
SLESSOR MIKE CEO, Director 7005 SOUTHFRONT ROAD, LIVERMORE /s/ Stan Finkelstein, Attorney-in-fact for Mike Slessor 18 Feb 2026 0001590177

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction FORM Common Stock Sale $77,437 -834 -0.17% $92.85 478,916 18 Feb 2026 Direct F1, F2
transaction FORM Common Stock Sale $463,648 -4,934 -1% $93.97 473,982 18 Feb 2026 Direct F1, F3
transaction FORM Common Stock Sale $274,512 -2,896 -0.61% $94.79 471,086 18 Feb 2026 Direct F1, F4
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.

Transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).

Explanation of Responses:

Id Content
F1 The reported sale of shares occurred automatically pursuant to a Rule 10b5-1 trading plan adopted on August 19, 2025.
F2 Price represents the weighted average sale price for the transaction reported. Price range of shares sold is $92.375 through $93.36. 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.
F3 Price represents the weighted average sale price for the transaction reported. Price range of shares sold is $93.44 through $94.35. 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.
F4 Price represents the weighted average sale price for the transaction reported. Price range of shares sold is $94.36 through $95.25. 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.