MIKE SLESSOR - 06 Jan 2026 Form 4 Insider Report for FORMFACTOR INC (FORM)

Signature
/s/ Stan Finkelstein, Attorney-in-fact for Mike Slessor
Issuer symbol
FORM
Transactions as of
06 Jan 2026
Net transactions value
-$2,574,390
Form type
4
Filing time
06 Jan 2026, 19:13:07 UTC
Previous filing
17 Dec 2025
Next filing
15 Jan 2026

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 06 Jan 2026 0001590177

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction FORM Common Stock Sale $2,574,390 -39,606 -7.5% $65.00 485,995 06 Jan 2026 Direct F1
* 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.