MP Form 144: 150,000 Founder Shares Filed

MP filing reports a proposed sale of 150,000 shares of Common (listed as "Founder Stock") in a Form 144 submission.

Rhea-AI Filing Summary

MP filing reports a proposed sale of 150,000 shares of Common (listed as "Founder Stock") in a Form 144 submission. The filing also discloses recent trust dispositions: 122,812 shares on 05/12/2026, 259,179 shares on 04/20/2026, and 40,821 shares on 04/17/2026.

The broker listed is Morgan Stanley Smith Barney LLC Executive Financial Services. Cash figures appear alongside each trade in the excerpt but the filing excerpt does not state alternative proceeds treatment or further qualifiers in the provided text.

Key Figures

Shares to be sold: 150,000 shares Trust sale on 05/12/2026: 122,812 shares Trust sale on 04/20/2026: 259,179 shares +5 more

8 metrics

Shares to be sold 150,000 shares Securities To Be Sold (Founder Stock)

Trust sale on 05/12/2026 122,812 shares James Henry Litinsky Rev Trust sale recorded 05/12/2026

Trust sale on 04/20/2026 259,179 shares James Henry Litinsky Rev Trust sale recorded 04/20/2026

Trust sale on 04/17/2026 40,821 shares James Henry Litinsky Rev Trust sale recorded 04/17/2026

Cash figure associated (first line) $9,767,298.76 Amount listed adjacent to the 150,000 share line in excerpt

Cash for 05/12/2026 trade $8,093,390.73 Amount shown alongside 122,812 shares on 05/12/2026

Cash for 04/20/2026 trade $16,588,149.58 Amount shown alongside 259,179 shares on 04/20/2026

Cash for 04/17/2026 trade $2,613,459.75 Amount shown alongside 40,821 shares on 04/17/2026

Key Terms

Form 144, Founder Stock, Revocable Trust, Securities To Be Sold

4 terms

Form 144 regulatory

"Common | Morgan Stanley Smith Barney LLC Executive Financial Services"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Founder Stock market

"Common | 11/17/2020 | Founder Stock | Issuer"

Revocable Trust legal

"JAMES HENRY LITINSKY REVOCABLE TRUST 1700 S. Pavilion"

A revocable trust is a legal arrangement where the person who creates it keeps control and can change or cancel the trust at any time, while naming who will manage and receive the assets later. Think of it like a flexible folder for your investments and property that can be relabeled or reworked as circumstances change; it matters to investors because it determines how ownership is recorded, how easily assets transfer on incapacity or death, and whether holdings bypass public probate proceedings.

Securities To Be Sold regulatory

"144: Securities To Be Sold Common | 11/17/2020"

FAQ

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

What does the MP Form 144 disclose?

It discloses a proposed sale of 150,000 Founder Stock shares. The filing also lists three trust sales totaling specific share counts executed in April–May 2026.

Who is listed as the broker on the Form 144 for MP?

The broker shown is Morgan Stanley Smith Barney LLC Executive Financial Services. That name appears on the filing line associated with the 150,000 shares to be sold.

Which entity reported recent sales in the excerpt?

The James Henry Litinsky Revocable Trust is listed for recent disposals of common shares on 04/17/2026, 04/20/2026, and 05/12/2026 with exact share counts shown.

How many shares were reported sold on 04/20/2026?

The excerpt shows 259,179 shares sold on 04/20/2026, with an associated cash figure recorded on the same line in the excerpt.

Does the excerpt state how sale proceeds will be used?

The provided excerpt does not include a use-of-proceeds statement. It lists share counts, dates, and cash amounts but no purpose or proceeds allocation language is shown.

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

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Accepted by SEC EDGAR 05/13/2026 - 04:51 PM EDT 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	0001831746
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.
SEC File Number	001-39277
Address of Issuer	1700 S. Pavilion Center Drive Suite 800 Las Vegas NEVADA 89135
Phone	(702) 844-6111
Name of Person for Whose Account the Securities are To Be Sold	JAMES HENRY LITINSKY REVOCABLE TRUST
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
Relationship to Issuer	Director

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	150000	9767298.76	178022198	05/13/2026	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	11/17/2020	Founder Stock	Issuer			150000	11/17/2020	Not Applicable

* 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
JAMES HENRY LITINSKY REVOCABLE TRUST 1700 S. Pavilion Center Drive Suite 800 Las Vegas NV 89135	Common	05/12/2026	122812	8093390.73
James Henry Litinsky Rev Trust 1700 S. Pavilion Center Drive Suite 800 Las Vegas NV 89135	Common	04/20/2026	259179	16588149.58
James Henry Litinsky Rev Trust 1700 S. Pavilion Center Drive Suite 800 Las Vegas NV 89135	Common	04/17/2026	40821	2613459.75

144: Remarks and Signature

Remarks
Date of Notice	05/13/2026
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	/s/ James Henry Litinsky, Trustee
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)