MP Form 144: Proposed Sale of 20,000 Shares Valued $1.15M by Shareholder

MP has a shareholder who filed a Form 144 notice to potentially sell 20,000 shares of common stock through RBC Capital Markets on the NYSE.

Rhea-AI Filing Summary

MP has a shareholder who filed a Form 144 notice to potentially sell 20,000 shares of common stock through RBC Capital Markets on the NYSE. The planned sale has an aggregate market value of $1,154,480.00. MP had 177,230,483 shares outstanding at the time referenced, providing context for the size of this proposed sale. The shares to be sold were acquired via restricted stock unit (RSU) vesting on 11/17/2020, 01/14/2023, and 03/16/2023 directly from the issuer.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does MP's latest Form 144 filing disclose?

The Form 144 filing for MP discloses a shareholder’s intent to sell 20,000 shares of common stock with an aggregate market value of $1,154,480.00, using RBC Capital Markets to execute trades on the NYSE.

How many MP shares are being proposed for sale and on which exchange?

The notice covers a proposed sale of 20,000 MP common shares, to be sold on the NYSE through RBC Capital Markets LLC.

What is the approximate market value of the MP shares in this Form 144?

The 20,000 MP common shares covered by the Form 144 have an aggregate market value of $1,154,480.00 based on the information provided.

When is the approximate sale date for the MP shares in the Form 144?

The filing lists an approximate date of sale of 11/17/2025 for the 20,000 MP common shares.

How and when were the MP shares in this Form 144 acquired?

The 20,000 MP common shares were acquired through RSU vesting from the issuer on three dates: 11/17/2020 (13,319 shares), 01/14/2023 (6,509 shares), and 03/16/2023 (172 shares).

How many MP shares were outstanding relative to this proposed sale?

At the time referenced, MP had 177,230,483 shares outstanding, which serves as a baseline for understanding the size of the proposed 20,000-share sale.

Which broker is handling the proposed sale of MP shares in the Form 144?

The proposed sale of 20,000 MP common shares is to be handled by RBC Capital Markets LLC, located at 250 Nicollet Mall, Suite 1700, Minneapolis, MN 55401.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 11/17/2025 - 01:13 PM EST Learn about SEC filing dates

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	0001831686
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	MP Materials Corp. / DE
SEC File Number	001-39277
Address of Issuer	1700 S. PAVILION CENTER DR. SUITE 800 LAS VEGAS NEVADA 89135
Phone	(702) 844-6111
Name of Person for Whose Account the Securities are To Be Sold	Corbett Ryan
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	Officer

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	RBC CAPITAL MARKETS LLC 250 NICOLLET MALL, SUITE 1700 MINNEAPOLIS MN 55401	20000	1154480.00	177230483	11/17/2025	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	01/14/2023	RSU VEST	ISSUER			6509	01/14/2023	N/A
COMMON	03/16/2023	RSU VEST	ISSUER			172	03/16/2023	N/A
COMMON	11/17/2020	RSU VEST	ISSUER			13319	11/17/2020	N/A

* 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	SOLD PURSUANT TO A RULE 10B5-1 PLAN ESTABLISHED 08/11/2025
Date of Notice	11/17/2025
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	08/11/2025
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	POA / JEFFREY EISCHENS
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)