[Form 4] Perimeter Solutions, Inc. Insider Trading Activity

Rhea-AI Filing Summary

Perimeter Solutions insider transactions by CFO Kyle Sable: The reporting shows an option exercise and an immediate sale. The CFO exercised stock options to acquire 40,000 shares at an exercise price of $3.89 per share and then sold 40,000 shares at a weighted average price of $22.05 per share, resulting in zero shares beneficially owned following the transactions. The filing discloses the sale price range of the shares sold as approximately $21.85 to $22.46 and notes the filer can provide share-by-share price details on request.

Positive

• Exercise of options at a low exercise price of $3.89 demonstrates the CFO realized significant intrinsic value when selling at higher market prices
• Transparent pricing disclosure — the filing provides a weighted average sale price and a stated price range and offers further per-price details on request

Negative

• CFO reduced beneficial ownership to zero in common stock after the transactions, which is a significant ownership change
• Immediate sale of exercised shares could be viewed as reducing insider equity stake in the company

Insights

Securities Analyst

TL;DR: CFO exercised options and immediately sold all resulting shares, realizing a large spread between exercise and sale prices.

The filing documents a routine option exercise for 40,000 shares at $3.89 per share followed by a sale of those 40,000 shares at a weighted average of $22.05. From a market-impact perspective, the transactions are material in size for insider disclosure but the filing contains no information about the use of proceeds or any planned ongoing transactions. The disclosure of the sale price range ($21.85–$22.46) and the offer to provide per-price details is standard and preserves transparency.

Corporate Governance Expert

TL;DR: The CFO reduced beneficial ownership to zero by exercising options then selling all shares; this is a noteworthy governance disclosure.

The report shows the Chief Financial Officer exercised option rights for 40,000 shares and subsequently sold the same amount, leaving no reported beneficial ownership in that class after the trades. While insider sales can be routine, the complete divestiture disclosed here is significant for stakeholders monitoring executive ownership and alignment with shareholders. The filing includes an explanation that the sale prices varied between $21.85 and $22.46, with a weighted average of $22.05.

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^*

Sable Kyle

(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)
	Chief Financial Officer

3. Date of Earliest Transaction (Month/Day/Year)
09/05/2025

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	09/05/2025		M		40,000	A	$3.89	40,000	D
Common Stock	09/05/2025		S		40,000	D	$22.05(1)	0	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)	$3.89	09/05/2025		M			40,000	02/20/2025	11/16/2033	Common Stock	40,000	$0	0	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 $21.85 to $22.46 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, as Attorney-in-Fact	09/08/2025
	** 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).
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.

FAQ

What did Perimeter Solutions (PRM) insider Kyle Sable do in this Form 4 filing?

The CFO exercised options to acquire 40,000 shares at $3.89 per share and then sold 40,000 shares at a weighted average price of $22.05, leaving 0 shares beneficially owned.

How many shares were sold and at what prices according to the filing for PRM?

The filing reports sale of 40,000 shares at a weighted average price of $22.05, with individual sale prices ranging approximately from $21.85 to $22.46.

Did the Form 4 indicate if the transaction was part of a Rule 10b5-1 plan for PRM?

The form includes the standard check-box language, but there is no explicit statement in the filing text that the transactions were made pursuant to a Rule 10b5-1 plan.

After the transactions, how many PRM shares does the reporting person beneficially own?

The filing reports 0 shares beneficially owned following the reported transactions.

What option terms were disclosed in the Form 4 for Perimeter Solutions?

The reported stock option had an exercise price of $3.89 and related to 40,000 underlying common shares; the filing lists exercise and expiration schedule details for the option grant.