PRM insider files Form 144 to sell 500K shares valued at $11.1M

Rhea-AI Filing Summary

Perimeter Solutions insider reported a proposed sale of 500,000 common shares via Form 144 to be executed through Morgan Stanley Smith Barney on the NYSE with an aggregate market value of $11,108,650. The shares were acquired the same day, 09/05/2025, by exercise of options under a registered plan and payment was made in cash. The filing also discloses a related sale on 09/04/2025 of 250,000 shares for gross proceeds of $5,567,750. The filer certifies no undisclosed material adverse information and includes the mandatory representation and signature statements.

Positive

• Regulatory compliance: Form 144 filed and includes required representations about undisclosed material information
• Transparent transaction details: Broker, share counts, aggregate market values, acquisition method, and dates are disclosed

Negative

• Insider selling activity: Proposed sale of 500,000 shares and a recent sale of 250,000 shares may be perceived negatively by some investors

Insights

Securities Analyst

TL;DR Insider exercised options and intends to sell 500,000 shares; recent prior sale of 250,000 shares was also reported.

The filing shows an executive-level transaction executed through a broker on a listed exchange, with acquisition and intended sale occurring on 09/05/2025. The immediate exercise-and-sale pattern is consistent with liquidity events following option vesting or exercise under a registered plan. The filing provides clear numbers: 500,000 shares proposed for sale valued at $11,108,650 and a prior sale of 250,000 shares for $5,567,750. From a market-impact perspective, the amounts are disclosed transparently and routed through a broker, which supports orderly execution.

Corporate Governance Expert

TL;DR Form 144 demonstrates procedural compliance for an insider sale tied to option exercise under a registered plan.

The document contains the required representations about lack of undisclosed material information and indicates the transaction stems from an exercise under a registered plan, which typically aligns with company-established equity programs. The disclosure of a prior 250,000-share sale on 09/04/2025 adds context on recent insider liquidity. The filing meets Rule 144 notice requirements and furnishes broker, share, and value details needed for regulatory transparency.

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK
Filer CCC
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.

Relationship to Issuer

Relationship to Issuer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	500000	11108650.00	146452138	09/05/2025	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	09/05/2025	Exercise of options under a registered plan	Issuer			500000	09/05/2025	Cash

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
EDWARD GOLDBERG 8000 MARYLAND AVE. SUITE 350 CLAYTON MO 63105	Common	09/04/2025	250000	5567750.00

144: Remarks and Signature

Remarks

Date of Notice

ATTENTION:

The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.

Signature

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

What does the Form 144 for PRM disclose about the proposed sale?

The filing discloses a proposed sale of 500,000 common shares through Morgan Stanley Smith Barney on the NYSE with an aggregate market value of $11,108,650 and an approximate sale date of 09/05/2025.

How were the 500,000 shares acquired according to the filing?

The shares were acquired on 09/05/2025 by exercise of options under a registered plan, and payment was made in cash.

Did the filer sell any PRM shares recently?

Yes. The filing reports a sale on 09/04/2025 of 250,000 common shares for gross proceeds of $5,567,750 by Edward Goldberg.

Who is the broker handling the proposed sale?

The broker listed is Morgan Stanley Smith Barney LLC Executive Financial Services, located at 1 New York Plaza, New York, NY 10004.

Does the filer assert possession of material nonpublic information?

By signing the notice, the person represents that they do not know any material adverse information about the issuer that has not been publicly disclosed.