MP Materials Insider Files Rule 144 to Sell 150,000 Shares Valued $10.8M

Rhea-AI Filing Summary

MP Materials Corp. notice of a proposed sale under Rule 144 for 150,000 common shares through Fidelity Brokerage Services with an aggregate market value of $10,803,255. The filing lists total shares outstanding as 177,098,314 and an approximate sale date of 08/29/2025 on the NYSE. The shares were acquired as stock awards from the issuer on 03/15/2021 (1,965 shares), 01/14/2022 (3,925 shares), 03/16/2022 (337 shares) and 02/17/2022 (143,773 shares), and payment is shown as compensation. No securities were reported sold in the past three months.

Positive

• Full Rule 144 disclosure provided including broker, share count, market value, and acquisition details
• Acquisitions were stock awards received as compensation, clearly listed with dates and amounts
• No securities sold in the past three months per the filing

Negative

• Proposed sale of 150,000 shares with aggregate market value of $10,803,255 (approximate sale date 08/29/2025)
• Insider sale will increase public float by the specified amount when executed

Insights

Securities Analyst

TL;DR: Insider plans to sell 150,000 shares (~0.085% of outstanding) valued at $10.8M; disclosure is routine under Rule 144.

The filing shows a proposed Rule 144 sale of 150,000 common shares via Fidelity with an aggregate value of $10,803,255 and an approximate sale date of 08/29/2025. Acquisition records indicate the shares were received as stock awards from the issuer and classified as compensation. The filing reports no other sales in the past three months. This is a standard compliance disclosure; the position size relative to outstanding shares is small based on provided figures.

Corporate Governance Expert

TL;DR: Filing appears procedurally complete: identifies broker, acquisition dates, and compensation basis for awards.

The notice includes broker details, the number of shares proposed for sale, market value, outstanding share count, and acquisition provenance (stock awards from the issuer). The signer attests there is no undisclosed material adverse information. There are no reported sales in the prior three months, and the filing follows Form 144 disclosure elements required for insider sales under Rule 144.

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

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	FIDELITY BROKERAGE SERVICES LLC 245 Summer Street BOSTON MA 02110	150000	10803255.00	177098314	08/29/2025	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	03/15/2021	Stock Award	ISSUER			1965	03/15/2021	Compensation
Common	01/14/2022	Stock Award	ISSUER			3925	01/14/2022	Compensation
Common	03/16/2022	Stock Award	ISSUER			337	03/16/2022	Compensation
Common	02/17/2022	Stock Award	ISSUER			143773	02/17/2022	Compensation

* 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

Nothing to Report

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 did MP (MP) disclose in this Form 144 filing?

The filer disclosed a proposed sale of 150,000 common shares via Fidelity with an aggregate market value of $10,803,255, approximate sale date 08/29/2025.

How were the shares being sold by MP acquired?

The shares were acquired as stock awards from the issuer on 03/15/2021 (1,965), 01/14/2022 (3,925), 03/16/2022 (337) and 02/17/2022 (143,773), recorded as compensation.

What broker is handling the proposed sale in the Form 144 for MP?

The filing lists Fidelity Brokerage Services LLC at 245 Summer Street, Boston, MA as the broker.

Does the Form 144 report any securities sold in the past three months for MP?

No. The filing states "Nothing to Report" for securities sold during the past three months.

What does the filer represent about material information in this Form 144?

By signing, the filer represents they do not know of any material adverse information