Perimeter Solutions (PRM): WindAcre funds disclose 9.9% ownership stake in 13G/A filing

Rhea-AI Filing Summary

WindAcre Partnership, its Master Fund and Snehal Rajnikant Amin report beneficial ownership of Perimeter Solutions, Inc. common stock on an amended Schedule 13G. The Master Fund directly holds 16,148,621 shares of common stock, which represents 9.9% of the outstanding shares.

The ownership percentage is based on 163,127,063 shares of common stock outstanding as of May 1, 2026, as reported by Perimeter Solutions. Voting and dispositive power over the 16,148,621 shares is reported as shared, with no sole voting or dispositive power. The reporting persons state that they may be deemed to beneficially own these shares through their relationships but expressly disclaim beneficial ownership of any shares not directly owned by them.

Key Figures

Shares beneficially owned: 16,148,621 shares Percent of class: 9.9% Shares outstanding baseline: 163,127,063 shares +2 more

5 metrics

Shares beneficially owned 16,148,621 shares Common stock of Perimeter Solutions directly held by the Master Fund

Percent of class 9.9% Portion of Perimeter Solutions common stock class reported by the group

Shares outstanding baseline 163,127,063 shares Perimeter Solutions common stock outstanding as of May 1, 2026

Sole voting power 0 shares Shares over which the reporting persons have sole voting power

Shared voting power 16,148,621 shares Shares over which the reporting persons have shared voting power

Key Terms

beneficially own, shared voting power, shared dispositive power, Schedule 13G, +1 more

5 terms

beneficially own financial

"may be deemed to beneficially own the Shares owned by the Master Fund"

Beneficially own means having the economic rights and risks of a security—such as the right to receive dividends, sell the shares, or profit from price changes—whether or not your name appears on the official share register. Think of it like renting a car: you use it and reap the benefits even if the title lists someone else. Investors care because beneficial ownership determines who truly controls value, must be disclosed under securities rules, and can signal potential influence or trading activity that affects a stock’s price.

shared voting power financial

"Shared Voting Power 16,148,621.00"

Shared voting power occurs when two or more parties jointly have the right to vote or decide how a block of company shares is cast, like co-owners who must agree before moving a piece of furniture. Investors care because who controls voting rights affects board elections, major corporate decisions and takeover outcomes, and shared control can alter regulatory disclosures and the practical influence any holder has over a company’s direction and value.

shared dispositive power financial

"Shared Dispositive Power 16,148,621.00"

Schedule 13G regulatory

"for purposes of Section 13(d) of the Securities Exchange Act of 1934"

A Schedule 13G is a formal document that investors file with the government when they acquire a large ownership stake in a company, usually for investment purposes rather than control. It helps keep the public informed about who owns significant parts of a company's shares, which can influence how the company is managed and how investors make decisions. Filing this schedule is important for transparency and understanding the ownership landscape of publicly traded companies.

percent of class financial

"Percent of class: 9.9 %"

Percent of class is the portion of a specific category of securities—such as a company’s common shares, preferred shares, or a bond series—that takes part in or approves a corporate action (vote, consent, tender, etc.). Investors watch this number because it reveals how much support or opposition exists within that particular shareholder group; like counting how many members of a club back a proposal, it can determine whether a plan passes or how influence is distributed.

FAQ

What stake in Perimeter Solutions (PRM) does WindAcre report on this Schedule 13G/A?

WindAcre’s Master Fund reports holding 16,148,621 shares of Perimeter Solutions common stock, representing 9.9% of the company’s outstanding shares based on 163,127,063 shares outstanding as of May 1, 2026.

Who are the reporting persons in the Perimeter Solutions (PRM) Schedule 13G/A Amendment No. 3?

The filing is jointly made by The WindAcre Partnership LLC, The WindAcre Partnership Master Fund LP, and Snehal Rajnikant Amin. WindAcre manages the Master Fund, and Mr. Amin is WindAcre’s managing member and principal beneficial owner.

How much voting power over Perimeter Solutions (PRM) shares does WindAcre report?

The reporting persons disclose 0 shares with sole voting power and 16,148,621 shares with shared voting power. They also report the same 16,148,621 shares as subject to shared dispositive power, with no sole dispositive power.

On what share count is WindAcre’s 9.9% ownership in Perimeter Solutions (PRM) based?

The 9.9% ownership figure is calculated using 163,127,063 shares of Perimeter Solutions common stock outstanding as of May 1, 2026, as reported in the company’s Form 10-Q for the period ended March 31, 2026.

Do WindAcre and Snehal Amin claim full beneficial ownership of their Perimeter Solutions (PRM) stake?

They state they may be deemed to beneficially own the shares held by the Master Fund due to their relationships, but each disclaims beneficial ownership of any Perimeter Solutions shares not directly owned by that reporting person.

What class of securities in Perimeter Solutions (PRM) is covered by this Schedule 13G/A?

The filing covers Common Stock, par value $0.0001 per share, of Perimeter Solutions, Inc., identified by CUSIP 71385M107. All reported holdings and percentages relate to this class of common stock.

AI-generated analysis. How Rhea-AI works. Not financial advice.

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

Available on EDGAR 08/14/2026 - 04:02 PM Accepted by SEC EDGAR 08/14/2026 - 04:00 PM Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 3)

PERIMETER SOLUTIONS, INC.

(Name of Issuer)

Common Stock, par value $0.0001 per share

(Title of Class of Securities)

71385M107

(CUSIP Number)

06/30/2026

(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 Number(s): 71385M107

1

Names of Reporting Persons

The WindAcre Partnership LLC

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

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 16,148,621.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 16,148,621.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

16,148,621.00

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)

9.9 %

12

Type of Reporting Person (See Instructions)

IA

Comment for Type of Reporting Person: The Master Fund owns 16,148,621 Shares of Common Stock, consisting of 16,148,621 Shares of Common Stock directly held. By virtue of their relationships with the Master Fund discussed in further detail in Item 2, each of WindAcre and Mr. Amin may be deemed to beneficially own the Shares owned by the Master Fund.This Schedule 13G reports an aggregate of 16,148,621 Shares of Common Stock, consisting of 16,148,621 Shares of Common Stock directly held. The filing of this Schedule 13G shall not be construed as an admission that the Reporting Persons are, for purposes of Section 13(d) of the Securities Exchange Act of 1934, as amended, the beneficial owners of any of the Shares reported herein. Each of the Reporting Persons specifically disclaims beneficial ownership of the Shares reported herein that are not directly owned by such Reporting Person.The following ownership percentages are based on 163,127,063 Shares outstanding, which is comprised of 163,127,063 Shares of Common Stock outstanding as of May 1, 2026, as reported in the Issuer's Form 10-Q dated March 31, 2026.The 16,148,621 Shares owned by the Master Fund represent approximately 9.9% of the outstanding Shares. By virtue of its relationship with the Master Fund discussed in further detail in Item 2, WindAcre may be deemed to beneficially own 16,148,621 Shares, representing approximately 9.9% of the outstanding Shares and Mr. Amin may be deemed to beneficially own 16,148,621 Shares representing approximately 9.9% of the outstanding Shares.This schedule 13G reports an aggregate of 16,148,621 Shares, representing approximately 9.9% of the outstanding Shares.

SCHEDULE 13G

CUSIP Number(s): 71385M107

1

Names of Reporting Persons

The WindAcre Partnership Master Fund, LP

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

CAYMAN ISLANDS

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 16,148,621.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 16,148,621.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

16,148,621.00

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)

9.9 %

12

Type of Reporting Person (See Instructions)

PN

Comment for Type of Reporting Person: The Master Fund owns 16,148,621 Shares of Common Stock, consisting of 16,148,621 Shares of Common Stock directly held. By virtue of their relationships with the Master Fund discussed in further detail in Item 2, each of WindAcre and Mr. Amin may be deemed to beneficially own the Shares owned by the Master Fund.This Schedule 13G reports an aggregate of 16,148,621 Shares of Common Stock, consisting of 16,148,621 Shares of Common Stock directly held. The filing of this Schedule 13G shall not be construed as an admission that the Reporting Persons are, for purposes of Section 13(d) of the Securities Exchange Act of 1934, as amended, the beneficial owners of any of the Shares reported herein. Each of the Reporting Persons specifically disclaims beneficial ownership of the Shares reported herein that are not directly owned by such Reporting Person.The following ownership percentages are based on 163,127,063 Shares outstanding, which is comprised of 163,127,063 Shares of Common Stock outstanding as of May 1, 2026, as reported in the Issuer's Form 10-Q dated March 31, 2026.The 16,148,621 Shares owned by the Master Fund represent approximately 9.9% of the outstanding Shares. By virtue of its relationship with the Master Fund discussed in further detail in Item 2, WindAcre may be deemed to beneficially own 16,148,621 Shares, representing approximately 9.9% of the outstanding Shares and Mr. Amin may be deemed to beneficially own 16,148,621 Shares representing approximately 9.9% of the outstanding Shares.This schedule 13G reports an aggregate of 16,148,621 Shares, representing approximately 9.9% of the outstanding Shares.

SCHEDULE 13G

CUSIP Number(s): 71385M107

1

Names of Reporting Persons

Snehal Rajnikant Amin

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

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 16,148,621.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 16,148,621.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

16,148,621.00

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)

9.9 %

12

Type of Reporting Person (See Instructions)

IN

Comment for Type of Reporting Person: The Master Fund owns 16,148,621 Shares of Common Stock, consisting of 16,148,621 Shares of Common Stock directly held. By virtue of their relationships with the Master Fund discussed in further detail in Item 2, each of WindAcre and Mr. Amin may be deemed to beneficially own the Shares owned by the Master Fund.This Schedule 13G reports an aggregate of 16,148,621 Shares of Common Stock, consisting of 16,148,621 Shares of Common Stock directly held. The filing of this Schedule 13G shall not be construed as an admission that the Reporting Persons are, for purposes of Section 13(d) of the Securities Exchange Act of 1934, as amended, the beneficial owners of any of the Shares reported herein. Each of the Reporting Persons specifically disclaims beneficial ownership of the Shares reported herein that are not directly owned by such Reporting Person.The following ownership percentages are based on 163,127,063 Shares outstanding, which is comprised of 163,127,063 Shares of Common Stock outstanding as of May 1, 2026, as reported in the Issuer's Form 10-Q dated March 31, 2026.The 16,148,621 Shares owned by the Master Fund represent approximately 9.9% of the outstanding Shares. By virtue of its relationship with the Master Fund discussed in further detail in Item 2, WindAcre may be deemed to beneficially own 16,148,621 Shares, representing approximately 9.9% of the outstanding Shares and Mr. Amin may be deemed to beneficially own 16,148,621 Shares representing approximately 9.9% of the outstanding Shares.This schedule 13G reports an aggregate of 16,148,621 Shares, representing approximately 9.9% of the outstanding Shares.

SCHEDULE 13G

Item 1.
(a)	Name of issuer: PERIMETER SOLUTIONS, INC.
(b)	Address of issuer's principal executive offices: 8000 Maryland Avenue, Suite 350, Clayton, MO, 63105
Item 2.
(a)	Name of person filing: This statement is being jointly filed by: - The WindAcre Partnership LLC, a Delaware limited liability company, ("WindAcre") - The WindAcre Partnership Master Fund LP, an exempted limited partnership established in the Cayman Islands ("Master Fund") - Snehal Rajnikant Amin, as the principal beneficial owner of The WindAcre Partnership LLC and the only beneficial owner holding more than 5% ("Mr. Amin"). Each of the foregoing is referred to as a "Reporting Person" and collectively as the "Reporting Persons." WindAcre serves as the investment manager of the Master Fund. Mr. Amin is the managing member of WindAcre. By virtue of these relationships, each of WindAcre and Mr. Amin may be deemed to beneficially own the Issuer's Common Shares directly owned by the Master Fund.
(b)	Address or principal business office or, if none, residence: The principal business address of WindAcre is 2200 Post Oak Blvd., Suite 1580, Houston, Texas 77056.The principal business address of the Master Fund is Ogier Global (Cayman) Limited, 89 Nexus Way, Camana Bay, Grand Cayman KY1-9009, Cayman Islands.
(c)	Citizenship: Mr. Amin is a citizen of the United States of America. WindAcre is a limited liability company formed under the laws of the State of Delaware. The Master Fund is an exempted company formed under the laws of the Cayman Islands
(d)	Title of class of securities: Common Stock, par value $0.0001 per share
(e)	CUSIP No.: 71385M107
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: 16,148,621
(b)	Percent of class: 9.9 %
(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: 16,148,621
	(iii) Sole power to dispose or to direct the disposition of: 0
	(iv) Shared power to dispose or to direct the disposition of: 16,148,621
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
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 WindAcre Partnership LLC

Signature:	/s/ Snehal Rajnikant Amin
Name/Title:	Managing Member of the Investment Manager
Date:	08/14/2026

The WindAcre Partnership Master Fund, LP

Signature:	The WindAcre General Partner LP
Name/Title:	Managing General Partner
Date:	08/14/2026

Signature:	WAPGP LLC
Name/Title:	General Partner
Date:	08/14/2026

Signature:	/s/ Snehal Rajnikant Amin
Name/Title:	Sole Owner
Date:	08/14/2026

Snehal Rajnikant Amin

Signature:	/s/ Snehal Rajnikant Amin
Name/Title:	Snehal Rajnikant Amin
Date:	08/14/2026