Aric Brendan McKinnis - 02 Sep 2025 Form 4 Insider Report for FORMFACTOR INC (FORM)

Role: CFO, SVP Global Finance
Signature: /s/ Stan Finkelstein, Attorney-in-fact for Aric McKinnis
Issuer symbol: FORM
Transactions as of: 02 Sep 2025
Net transactions value: -$5,487
Form type: 4
Filing time: 03 Sep 2025, 16:10:22 UTC
Previous filing: 29 Aug 2025
Next filing: 05 Nov 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
McKinnis Aric Brendan	CFO, SVP Global Finance	7005 SOUTHFRONT ROAD, LIVERMORE	/s/ Stan Finkelstein, Attorney-in-fact for Aric McKinnis	03 Sep 2025	0001660926

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	FORM	Common Stock	Options Exercise	$0	+773	+7.2%	$0.000000	11,496	02 Sep 2025	Direct	F1
transaction	FORM	Common Stock	Tax liability	$5,487	-193	-1.7%	$28.43	11,303	02 Sep 2025	Direct	F2

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	FORM	Restricted Stock Units	Options Exercise	$0	-773	-25%	$0.000000	2,319	02 Sep 2025	Common Stock	773	$0.000000	Direct	F1, F3, F4

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	These shares of common stock reflect the settlement of restricted stock units of the Issuer. Each Restricted Stock Unit (RSU) is convertible into a share of common stock on a 1-for-1 basis.
F2	Represents the number of shares withheld upon vesting of restricted stock units to cover tax withholding obligations.
F3	The Restricted Stock Units granted on June 2, 2023 vest in twelve (12) quarterly installments beginning on September 2, 2023 and ending on June 2, 2026 and will be settled into shares of common stocks on or following the vesting date.
F4	If the reporting person's employment is terminated for any reason before an applicable Vesting Date, all restricted stock units that have not yet vested shall be forfeited without consideration, except as provided in the change of control severance agreement and any other agreements regarding equity vesting and exercisability between the reporting person and Issuer, which agreements or form agreements are filed with the SEC.