FormFactor CFO sells 3,462 shares in planned trade

FORMFACTOR INC Chief Financial Officer Aric Brendan McKinnis reported an open-market sale of 3,462 shares of common stock on March 5, 2026 at $90.42 per share.

Accepted by SEC EDGAR 03/06/2026 - 06:10 PM EST

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Rhea-AI Filing Summary

FORMFACTOR INC Chief Financial Officer Aric Brendan McKinnis reported an open-market sale of 3,462 shares of common stock on March 5, 2026 at $90.42 per share. The transaction occurred automatically under a Rule 10b5-1 trading plan adopted on December 4, 2025, and left him with 11,140 shares of directly owned common stock.

Insider Trade Summary

Net Seller: 3,462 shares

Net Sell 1 txn

Insider McKinnis Aric Brendan

Role CFO, SVP Global Finance

Sold 3,462 shs ($313K)

Type	Security	Shares	Price	Value
Sale	Common Stock	3,462	$90.42	$313K

Holdings After Transaction: Common Stock — 11,140 shares (Direct)

Footnotes (1)

F1. The reported sale of shares occurred automatically pursuant to a Rule 10b5-1 trading plan adopted on December 4, 2025.

FAQ

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What insider transaction did FORMFORMFACTOR INC CFO report on Form 4?

FORMFACTOR INC CFO Aric Brendan McKinnis reported selling 3,462 shares of common stock. The open-market sale occurred on March 5, 2026 at $90.42 per share and was executed automatically under a pre-established Rule 10b5-1 trading plan adopted on December 4, 2025.

How many FORMFACTOR INC shares did the CFO sell and at what price?

The CFO sold 3,462 shares of FORMFACTOR INC common stock at $90.42 per share. This was an open-market transaction reported on Form 4, executed automatically pursuant to a Rule 10b5-1 trading plan established in December 2025 for pre-arranged trading.

How many FORMFACTOR INC shares does the CFO own after this Form 4 sale?

After the reported transaction, the CFO directly owns 11,140 shares of FORMFACTOR INC common stock. This remaining balance reflects his holdings following the automatic sale of 3,462 shares executed on March 5, 2026 under a previously adopted Rule 10b5-1 trading plan.

Was the FORMFACTOR INC CFO’s stock sale under a Rule 10b5-1 plan?

Yes, the CFO’s sale occurred automatically under a Rule 10b5-1 trading plan adopted on December 4, 2025. Such plans pre-schedule trades, allowing insiders to systematically sell shares over time, helping separate personal trading decisions from day-to-day company developments.

What role does the insider in this FORMFACTOR INC Form 4 hold?

The reporting person on the FORMFACTOR INC Form 4 is Aric Brendan McKinnis, who serves as Chief Financial Officer and Senior Vice President, Global Finance. He reported a direct, open-market sale of 3,462 common shares executed pursuant to a pre-established Rule 10b5-1 trading plan.

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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

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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

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)
03/05/2026

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	03/05/2026		S		3,462⁽¹⁾	D	$90.42	11,140	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

1. The reported sale of shares occurred automatically pursuant to a Rule 10b5-1 trading plan adopted on December 4, 2025.

Remarks:

	/s/ Stan Finkelstein, Attorney-in-fact for Aric McKinnis	03/06/2026
	** 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.

Source: View Original Filing on SEC EDGAR