Perimeter Solutions, Inc. (PRM) insider sells 137,500 shares

Rhea-AI Filing Summary

Perimeter Solutions, Inc. reported an insider equity transaction by its General Counsel on 12/12/2025. The officer exercised stock options with a $10 exercise price to acquire 17,500 and 120,000 shares of common stock, then sold 137,500 shares at a weighted average price of $28.44 per share, with individual sale prices ranging from approximately $28.15 to $29.26.

After these transactions, the General Counsel directly beneficially owned 47,157 shares of common stock and 240,000 stock options, as reported in the filing.

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

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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^*

Yokozuka Noriko

(Last) (First) (Middle)

C/O PERIMETER SOLUTIONS, INC.

8000 MARYLAND AVE., SUITE 350

(Street)

CLAYTON MO 63105

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Perimeter Solutions, Inc. [ PRM ]

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	General Counsel

3. Date of Earliest Transaction (Month/Day/Year)
12/12/2025

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	12/12/2025		M		17,500	A	$10	64,657	D
Common Stock	12/12/2025		M		120,000	A	$10	184,657	D
Common Stock	12/12/2025		S		137,500	D	$28.44(1)	47,157	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
Stock Option (right to buy)	$10	12/12/2025		M			17,500	11/08/2022	11/08/2031	Common Stock	17,500	$0	0	D
Stock Option (right to buy)	$10	12/12/2025		M			120,000	02/20/2025	11/08/2031	Common Stock	120,000	$0	240,000	D

Explanation of Responses:

1. Represents the weighted average price of the shares sold. The prices of the shares sold pursuant to the transaction ranged from approximately $28.15 to $29.26 per share. The Reporting Person, upon request, will provide the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price.

Remarks:

	/s/ Noriko Yokozuka	12/16/2025
	** 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).
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FAQ

What insider transaction did Perimeter Solutions (PRM) report in this filing?

The filing reports that Perimeter Solutions, Inc.'s General Counsel exercised stock options with a $10 exercise price to acquire 17,500 and 120,000 shares of common stock on 12/12/2025 and sold 137,500 shares of common stock the same day.

How many Perimeter Solutions (PRM) shares were sold and at what price?

The General Counsel sold 137,500 shares of Perimeter Solutions common stock at a weighted average price of $28.44 per share, with sale prices ranging from approximately $28.15 to $29.26 per share.

What stock options did the Perimeter Solutions (PRM) insider exercise?

The insider exercised stock options (rights to buy common stock) with a $10 exercise price for 17,500 shares from options first exercisable on 11/08/2022 and 120,000 shares from options first exercisable on 02/20/2025.

What is the General Counsel's ownership in Perimeter Solutions (PRM) after the transactions?

Following the reported transactions, the General Counsel directly beneficially owned 47,157 shares of Perimeter Solutions common stock and 240,000 stock options, according to the filing tables.

What is the reporting person’s role at Perimeter Solutions (PRM)?

The reporting person is an officer of Perimeter Solutions, Inc., serving as General Counsel, as indicated in the relationship section of the filing.