Perimeter Solutions (PRM) CFO exercises options, sells 49,540 common shares

Rhea-AI Filing Summary

Perimeter Solutions, Inc.’s Chief Financial Officer, Kyle Sable, exercised stock options and sold the resulting shares. Sable exercised options for 49,540 shares of common stock at an exercise price of $8.36 per share, then executed open-market sales totaling 49,540 shares on May 13, 2026 at weighted average prices of $33.05 and $33.59 per share. Following these transactions, Sable reported owning 0 shares of common stock directly while retaining stock options covering 70,000 shares that remain outstanding and unexercised.

Insights

Equity compensation and insider trading analyst

CFO exercised options then sold all acquired shares, retaining only options.

The filing shows CFO Kyle Sable exercised options to acquire 49,540 Perimeter Solutions common shares at an exercise price of $8.36 per share, then sold all 49,540 shares in open-market transactions at weighted average prices of $33.05 and $33.59.

This pattern is a classic exercise-and-sell: the derivative position is partially converted to cash, with no direct common stock held afterward. However, Sable still holds stock options over 70,000 shares expiring in 2032, so he maintains equity-linked exposure through these remaining awards.

The sale direction is clear from transaction code S and the “open-market sale” description, but the filing does not state motivations such as liquidity needs or portfolio diversification. The net effect is a reduction in immediate share ownership, offset by a continued, sizable option-based incentive position.

Insider Trade Summary

Net Seller: 49,540 shares ($1,639,067)

Net Sell 4 txns

Insider Sable Kyle

Role Chief Financial Officer

Sold 49,540 shs ($1.64M)

Type	Security	Shares	Price	Value
Exercise	Stock Option (right to buy)	49,540	$0.00	--
Exercise	Common Stock	49,540	$8.36	$414K
Sale	Common Stock	46,263	$33.05	$1.53M
Sale	Common Stock	3,277	$33.59	$110K

Holdings After Transaction: Stock Option (right to buy) — 70,000 shares (Direct, null); Common Stock — 49,540 shares (Direct, null)

Footnotes (1)

1. Represents the weighted average price of the shares sold. The prices of the shares sold pursuant to the transaction ranged from approximately $32.50 to $33.50 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. Represents the weighted average price of the shares sold. The prices of the shares sold pursuant to the transaction ranged from approximately $33.51 to $33.67 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.

Key Figures

Shares sold at $33.05: 46,263 shares Shares sold at $33.59: 3,277 shares Options exercised: 49,540 shares +4 more

7 metrics

Shares sold at $33.05 46,263 shares Common stock open-market sale at weighted average $33.05 on May 13, 2026

Shares sold at $33.59 3,277 shares Common stock open-market sale at weighted average $33.59 on May 13, 2026

Options exercised 49,540 shares Stock options exercised into common stock on May 13, 2026

Option exercise price $8.36 per share Conversion or exercise price for 49,540 stock options

Options remaining 70,000 options Stock options outstanding after the reported exercise on May 13, 2026

Common shares after transactions 0 shares Directly owned Perimeter Solutions common stock following all reported trades

Option expiration May 6, 2032 Expiration date for the stock option (right to buy) position

Key Terms

open-market sale, Stock Option (right to buy), derivative security, weighted average price, +1 more

5 terms

open-market sale financial

"transaction_action: open-market sale"

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

Stock Option (right to buy) financial

"security_title: Stock Option (right to buy)"

derivative security financial

"transaction_code_description: Exercise or conversion of derivative security"

A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.

weighted average price financial

"Represents the weighted average price of the shares sold."

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

exercise or conversion of derivative security financial

"transaction_code_description: Exercise or conversion of derivative security"

Form 4 Insider Transactions: What Each Field Means →

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 MISSOURI 63105

(City) (State) (Zip)

UNITED STATES

(Country)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/13/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

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	05/13/2026		M		49,540	A	$8.36	49,540	D
Common Stock	05/13/2026		S		46,263(1)	D	$33.05	3,277	D
Common Stock	05/13/2026		S		3,277(2)	D	$33.59	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)	$8.36	05/13/2026		M			49,540	02/26/2026	05/06/2032	Common Stock	49,540	$0	70,000	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 $32.50 to $33.50 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.

2. Represents the weighted average price of the shares sold. The prices of the shares sold pursuant to the transaction ranged from approximately $33.51 to $33.67 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	05/15/2026
	** 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.
* Form 4: SEC 1474 (03-26)

FAQ

What did Perimeter Solutions (PRM) CFO Kyle Sable report in this Form 4?

CFO Kyle Sable reported exercising stock options for 49,540 Perimeter Solutions shares at $8.36 per share, then selling all 49,540 shares in open-market transactions at weighted average prices of $33.05 and $33.59 per share on May 13, 2026.

How many Perimeter Solutions (PRM) shares did the CFO sell and at what prices?

Kyle Sable sold 46,263 Perimeter Solutions common shares at a weighted average price of $33.05 and 3,277 shares at a weighted average price of $33.59, for total open-market sales of 49,540 shares on May 13, 2026.

How many Perimeter Solutions (PRM) shares did the CFO acquire through option exercise?

The CFO exercised stock options covering 49,540 Perimeter Solutions common shares at an exercise price of $8.36 per share. These newly acquired shares were then fully sold in the reported open-market transactions occurring on May 13, 2026, according to the Form 4.

What are the CFO’s Perimeter Solutions (PRM) holdings after these transactions?

After the reported transactions, the CFO directly holds 0 shares of Perimeter Solutions common stock. However, he continues to hold stock options over 70,000 shares, which remain outstanding and unexercised following the May 13, 2026 exercise-and-sale sequence.

What is the exercise price and expiration for the CFO’s Perimeter Solutions (PRM) options?

The exercised stock options had a conversion or exercise price of $8.36 per share and an expiration date of May 6, 2032. After exercising 49,540 options, 70,000 stock options remain outstanding and continue to be held directly.

Were the Perimeter Solutions (PRM) CFO’s sales reported as open-market transactions?

Yes. Both sales of Perimeter Solutions common stock are labeled with transaction code S and described as an open-market or private sale, meaning the 49,540 shares were disposed of through market transactions rather than gifts, tax withholding, or internal transfers.