# EDGAR Filing Document

**Accession Number:** 0001660926
**File Stem:** 0001039399-25-000102
**Filing Date:** 2025-8
**Character Count:** 8190
**Document Hash:** 43aa06f7394b088ed47bcf63887360d3
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001039399-25-000102.hdr.sgml**: 20250829

**ACCESSION NUMBER**: 0001039399-25-000102

**CONFORMED SUBMISSION TYPE**: 3

**PUBLIC DOCUMENT COUNT**: 2

**CONFORMED PERIOD OF REPORT**: 20250808

**FILED AS OF DATE**: 20250829

**DATE AS OF CHANGE**: 20250829

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** McKinnis Aric Brendan
- **CENTRAL INDEX KEY:** 0001660926

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 3
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 000-50307
- **FILM NUMBER:** 251282239

**MAIL ADDRESS:**
- **STREET 1:** 13900 NW SCIENCE PARK DRIVE
- **CITY:** PORTLAND
- **STATE:** OR
- **ZIP:** 97229
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** FORMFACTOR INC
- **CENTRAL INDEX KEY:** 0001039399
- **STANDARD INDUSTRIAL CLASSIFICATION:** SEMICONDUCTORS & RELATED DEVICES [3674]
- **ORGANIZATION NAME:** 04 Manufacturing
- **EIN:** 133711155
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1227

**BUSINESS ADDRESS:**
- **STREET 1:** 7005 SOUTHFRONT ROAD
- **CITY:** LIVERMORE
- **STATE:** CA
- **ZIP:** 94551
- **BUSINESS PHONE:** 9252904000

**MAIL ADDRESS:**
- **STREET 1:** 7005 SOUTHFRONT ROAD
- **CITY:** LIVERMORE
- **STATE:** CA
- **ZIP:** 94551

## Ex-24

**POWER OF ATTORNEY**

Know all by these presents, that the undersigned hereby constitutes and appoints each of Alan Chan and Stan Finkelstein as the undersigned's true and lawful attorneys-in-fact to:

(1) execute for and on behalf of the undersigned, in the undersigned's capacity as an officer and/or member of the Board of Directors of FormFactor, Inc. (the "Company"), Forms 3, 4 and 5, including any amendments thereto, in accordance with Section 16(a) of the Securities Exchange Act of 1934 and the rules and regulations thereunder (the "Exchange Act");

(2) do and perform any and all acts for and on behalf of the undersigned which may be necessary or desirable to complete and execute any such Form 3, 4 or 5, complete and execute any amendment or amendments thereto and timely file such form with the United States Securities and Exchange Commission and the applicable stock exchange or similar authority; and

(3) take any other action of any type whatsoever in connection with the foregoing which, in the opinion of any of such attorneys-in-fact, may be of benefit to, in the best interest of, or legally required by, the undersigned, it being understood that the documents executed by any of such attorneys-in-fact on behalf of the undersigned pursuant to this Power of Attorney shall be in such form and shall contain such terms and conditions as any of such attorneys-in-fact may approve in his discretion.

The undersigned hereby grants to each such attorney-in-fact full power and authority to act separately and to do and perform any and every act and thing whatsoever requisite, necessary, or proper to be done in the exercise of any of the rights and powers herein granted, as fully to all intents and purposes as the undersigned might or could do if personally present, with full power of substitution or revocation, hereby ratifying and confirming all that any of such attorneys-in-fact, or the substitute or substitutes of any of such attorneys-in-fact, shall lawfully do or cause to be done by virtue of this Power of Attorney and the rights and powers herein granted. The undersigned acknowledges that the foregoing attorneys-in-fact, in serving in such capacity at the request of the undersigned, are not assuming, nor is the Company assuming, any of the undersigned's responsibilities to comply with Section 16 of the Exchange Act.

This Power of Attorney shall remain in full force and effect until the undersigned is no longer required to file Forms 3, 4 and 5 with respect to the undersigned's holdings of and transactions in securities issued by the Company, unless earlier revoked by the undersigned in a signed writing delivered to the foregoing attorneys-in-fact.

IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be executed as of this 13th day of August, 2025.

Signature: /s/ Aric B. McKinnis

Name: Aric B. McKinnis

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

## FORM 3

### INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>McKinnis Aric Brendan<br><sub>(Last) (First) (Middle)</sub><br>7005 SOUTHFRONT ROAD<br><sub>(Street)</sub><br>LIVERMORE, CA 94551<br><sub>(City) (State) (Zip)</sub> | **3. Issuer Name and Ticker or Trading Symbol**<br>FORMFACTOR INC [ FORM ] | **5. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  |
| **2. Date of Event Requiring Statement (Month/Day/Year)**<br>2025-08-08 | **4. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director   [ ] 10% Owner<br>[X] Officer (give title below)   [ ] Other (specify below)<br>_CFO, SVP Global Finance_ | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities Beneficially Owned

---

|  |  |  |  |
| --- | --- | --- | --- |
| 1. Title of Security | 2. Amount of Securities Beneficially Owned | 3. Ownership Form | 4. Nature of Indirect Beneficial Ownership |
| Common Stock | 10723 | D |  |

---

## Table II - Derivative Securities Beneficially Owned

---

|  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Date Exercisable and Expiration Date (Month/Day/Year) | 2. Date Exercisable and Expiration Date (Month/Day/Year) | 3. Title and Amount of Underlying Securities | 3. Title and Amount of Underlying Securities | 4. Conversion or Exercise Price | 5. Ownership Form | 6. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 4. Conversion or Exercise Price | 5. Ownership Form | 6. Nature of Indirect Beneficial Ownership |
| Restricted Stock Units | <sup>(1)</sup> | <sup>(1)(2)</sup> | Common Stock | 3092 | $0 | D |  |
| Restricted Stock Units | <sup>(3)</sup> | <sup>(2)(3)</sup> | Common Stock | 4168 | $0 | D |  |

---

### Footnotes:

(1) 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.

(2) 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.

(3) 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.

**Remarks:**
Exhibit 24 - Power of Attorney

**Signature:** /s/ Stan Finkelstein, Attorney-in-fact for Aric McKinnis  
**Date:** 2025-08-29

### Remarks:

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.**