FormFactor (FORM) CFO settles RSUs, withholds shares for tax obligations

Rhea-AI Filing Summary

FormFactor Inc. CFO Aric Brendan McKinnis reported equity award activity involving restricted stock units and common shares. On March 2, 2026, 773 restricted stock units were converted into 773 shares of common stock at $0.00 per share as part of an RSU settlement.

On the same date, 193 common shares were disposed of at $99.70 per share to cover tax withholding obligations tied to the vesting of these RSUs. The RSUs were granted on June 2, 2023 and vest in twelve quarterly installments from September 2, 2023 through June 2, 2026, subject to continued employment and certain severance and change‑of‑control arrangements.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a 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). See Instruction 10.

1. Name and Address of Reporting Person^*

McKinnis Aric Brendan

(Last) (First) (Middle)

7005 SOUTHFRONT ROAD

(Street)

LIVERMORE CA 94551

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
FORMFACTOR INC [ FORM ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	CFO, SVP Global Finance

3. Date of Earliest Transaction (Month/Day/Year)
03/02/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	03/02/2026		M		773	A	$0(1)	14,795	D
Common Stock	03/02/2026		F		193(2)	D	$99.7	14,602	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Units	$0	03/02/2026		M			773	(3)	(4)	Common Stock	773	$0	773	D

Explanation of Responses:

1. 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.

2. Represents the number of shares withheld upon vesting of restricted stock units to cover tax withholding obligations.

3. 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 stock on or following the vesting dates.

4. 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.

Remarks:

	/s/ Stan Finkelstein, Attorney-in-fact for Aric McKinnis	03/03/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What insider transactions did FORM CFO Aric McKinnis report on March 2, 2026?

On March 2, 2026, CFO Aric McKinnis settled 773 restricted stock units into 773 shares of FormFactor common stock and disposed of 193 shares to satisfy tax withholding obligations related to the vesting of those equity awards.

Were the FORM insider transactions open-market buys or sells?

The transactions were not open-market buys or sells. Restricted stock units converted into common shares at $0.00 per share, and 193 common shares were withheld and disposed of at $99.70 per share solely to cover tax withholding obligations from RSU vesting.

What are the vesting terms of the FORM restricted stock units granted June 2, 2023?

The restricted stock units granted June 2, 2023 vest in twelve quarterly installments beginning September 2, 2023 and ending June 2, 2026, and are settled into FormFactor common stock on or after each vesting date, subject to continued employment conditions.

What happens to unvested FORM restricted stock units if the CFO leaves the company?

If the CFO’s employment terminates before an applicable vesting date, unvested restricted stock units are forfeited without consideration, except as provided under any change of control severance agreement or other equity vesting agreements that are on file with the SEC.

How many FORM shares did the CFO hold directly after these transactions?

After the March 2, 2026 transactions, the CFO directly held 14,602 shares of FormFactor common stock, reflecting the RSU share settlement and the separate share disposition to cover associated tax withholding obligations.