Aric Brendan McKinnis - 05 Feb 2026 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: 05 Feb 2026
Net transactions value: -$43,924
Form type: 4
Filing time: 09 Feb 2026, 18:49:35 UTC
Previous filing: 03 Dec 2025
Next filing: 03 Mar 2026
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	09 Feb 2026	0001660926

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	FORM	Common Stock	Options Exercise	$0	+521	+4%	$0.000000	13,421	05 Feb 2026	Direct	F1
transaction	FORM	Common Stock	Tax liability	$13,587	-162	-1.2%	$83.87	13,259	05 Feb 2026	Direct	F2
transaction	FORM	Common Stock	Options Exercise	$0	+1,099	+8.3%	$0.000000	14,358	06 Feb 2026	Direct	F1
transaction	FORM	Common Stock	Tax liability	$30,337	-336	-2.3%	$90.29	14,022	06 Feb 2026	Direct	F2, F3

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	-521	-14%	$0.000000	3,126	05 Feb 2026	Common Stock	521	$0.000000	Direct	F4, F5
transaction	FORM	Restricted Stock Units	Options Exercise	$0	-1,099	-8.3%	$0.000000	12,089	06 Feb 2026	Common Stock	1,099	$0.000000	Direct	F5, F6

* 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	Includes 626 shares acquired from the Issuer's Employee Stock Purchase Plan on January 30, 2026.
F4	The Restricted Stock Units granted on August 5, 2024 vest in twelve (12) quarterly installments beginning on November 5, 2024 and ending on August 5, 2027 and will be settled into shares of common stock on or following the vesting dates.
F5	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.
F6	The Restricted Stock Units granted on November 6, 2025 vest in twelve (12) quarterly installments beginning on February 6, 2025 and ending on November 6, 2028 and will be settled into shares of common stock on or following the vesting dates.