Vanguard disaggregates holdings; reports 0% ownership of FormFactor (FORM)

Rhea-AI Filing Summary

FormFactor Inc: Amendment to a Schedule 13G/A shows The Vanguard Group reports 0 shares beneficially owned of FormFactor Inc common stock and 0% of the class, reflecting an internal realignment effective January 12, 2026 per SEC Release No. 34-39538.

The filing lists Vanguard's address and states certain subsidiaries will report separately; the reporting person signed the amendment on 03/26/2026.

Insights

Institutional Ownership Analyst

Vanguard disaggregated holdings; reported beneficial ownership is zero.

The filing shows The Vanguard Group amended its Schedule 13G to reflect an internal realignment referenced to SEC Release No. 34-39538 and reports 0% beneficial ownership of FormFactor common stock as of the amendment.

Implications depend on which Vanguard subsidiaries now report separately; subsequent filings by those entities may show their holdings. Timing and cash‑flow treatment are not stated in this excerpt.

Corporate Governance Specialist

Administrative disclosure aligning reporting with SEC guidance after realignment.

The amendment documents that certain Vanguard subsidiaries or divisions will report beneficial ownership separately following an internal reorganization effective 01/12/2026, citing SEC Release No. 34-39538.

This is a disclosure change rather than a trading event; any investor impact depends on subsequent separate 13G/A or 13D filings by the disaggregated entities.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 15)

FormFactor Inc

(Name of Issuer)

Common Stock

(Title of Class of Securities)

(CUSIP Number)

03/13/2026

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

schemaVersion:

SCHEDULE 13G

CUSIP No.

1

Names of Reporting Persons

The Vanguard Group

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

PENNSYLVANIA

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

0.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

0 %

12

Type of Reporting Person (See Instructions)

IA

Comment for Type of Reporting Person: On January 12, 2026, The Vanguard Group, Inc. went through an internal realignment. In accordance with SEC Release No. 34-39538 (January 12, 1998), certain subsidiaries or business divisions of subsidiaries of The Vanguard Group, Inc., that formerly had, or were deemed to have, beneficial ownership with The Vanguard Group, Inc., will report beneficial ownership separately (on a disaggregated basis) from The Vanguard Group, Inc. in reliance on such release. These subsidiaries and/or business divisions pursue the same investment strategies as previously pursued by The Vanguard Group, Inc. prior to the realignment. Further in accordance with SEC Release No. 34-39538 (January 12, 1998), The Vanguard Group, Inc. no longer has, or is deemed to have, beneficial ownership over securities beneficially owned by such subsidiaries and/or business divisions.

SCHEDULE 13G

Item 1.
(a)	Name of issuer: FormFactor Inc
(b)	Address of issuer's principal executive offices: 7005 Southfront Road, Livermore, CA, 94551
Item 2.
(a)	Name of person filing: The Vanguard Group
(b)	Address or principal business office or, if none, residence: 100 Vanguard Blvd.,, Malvern, PA, 19355
(c)	Citizenship: PA
(d)	Title of class of securities: Common Stock
(e)	CUSIP No.:
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: 0
(b)	Percent of class: 0 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 0
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 0
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	Ownership of 5 Percent or Less of a Class.
	Ownership of 5 percent or less of a class
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required. The Vanguard Group, including investment companies registered under the Investment Company Act of 1940 and other managed accounts, have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the securities reported herein.No one other person's interest in the securities reported herein is more than 5%.
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

The Vanguard Group

Signature:	Ashley Grim
Name/Title:	Head of Global Fund Administration
Date:	03/26/2026

FAQ

What does The Vanguard Group report in the FORM Schedule 13G/A for FormFactor (FORM)?

The filing reports The Vanguard Group beneficially owns 0 shares of FormFactor common stock, representing 0% of the class. It cites an internal realignment and disaggregation under SEC Release No. 34-39538, effective 01/12/2026.

Why does Vanguard show zero ownership in the 13G/A amendment for FORM?

Vanguard states its subsidiaries or business divisions were disaggregated after an internal realignment, so certain entities that formerly reported under Vanguard will now report separately, resulting in 0 shares reported by The Vanguard Group on this amendment.

Does the Schedule 13G/A indicate any sale or purchase of FormFactor shares?

No. The amendment documents a reporting change tied to internal reorganization; it lists 0 shares beneficially owned by Vanguard and does not describe any purchase or sale transactions or cash flows in the provided excerpt.

When was the amendment to the Schedule 13G/A signed and filed by Vanguard?

The signature block shows the amendment was signed by Ashley Grim, Head of Global Fund Administration, on 03/26/2026. The filing references the realignment date of 01/12/2026 in its explanatory comment.

Will other Vanguard entities file separate disclosures for FormFactor shares?

The amendment states certain subsidiaries or divisions will report beneficial ownership separately in reliance on SEC Release No. 34-39538, so separate 13G/A or related filings by those entities may appear showing their holdings.