MP Materials (MP) CFO insider sale leaves 194,812 shares held

Rhea-AI Filing Summary

MP Materials Corp. (MP) chief financial officer transaction disclosed. A Form 4 reports that the company’s CFO sold 20,000 shares of common stock on 11/17/2025, at a weighted average price of $57.72, in multiple trades within a price range of $57.31 to $58.31. After these sales, the reporting person directly beneficially owns 194,812 shares of MP Materials common stock.

The filing states that the sales were made under a Rule 10b5-1 trading plan that the reporting person adopted on August 11, 2025, which is designed to allow pre-arranged trading of shares under specified conditions.

Insider Trade Summary

Net Seller: 20,000 shares ($1,154,400)

Net Sell 1 txn

Insider Corbett Ryan

Role Chief Financial Officer

Sold 20,000 shs ($1.15M)

Type	Security	Shares	Price	Value
Sale	Common Stock	20,000	$57.72	$1.15M

Holdings After Transaction: Common Stock — 194,812 shares (Direct)

Footnotes (1)

1. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 11, 2025. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $57.31 to $58.31. The reporting person undertakes to provide to MP Materials Corp., any security holder of MP Materials Corp., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in footnote (2) to this Form 4.

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).

X

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^*

Corbett Ryan

(Last) (First) (Middle)

1700 S. PAVILION CENTER DRIVE, SUITE 800

(Street)

LAS VEGAS NV 89135

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
MP Materials Corp. / DE [ MP ]

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

3. Date of Earliest Transaction (Month/Day/Year)
11/17/2025

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

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

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

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	11/17/2025		S(1)		20,000	D	$57.72(2)	194,812	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

Explanation of Responses:

1. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 11, 2025.

2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $57.31 to $58.31. The reporting person undertakes to provide to MP Materials Corp., any security holder of MP Materials Corp., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in footnote (2) to this Form 4.

Remarks:

	/s/ Elliot D. Hoops, Attorney-In-Fact for Ryan Corbett	11/19/2025
	** 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.

FAQ

What insider transaction did MP (MP Materials Corp.) report in this Form 4?

The Form 4 reports that the chief financial officer sold 20,000 shares of MP Materials Corp. common stock on 11/17/2025.

At what price were the MP Materials (MP) shares sold by the CFO?

The filing lists a weighted average sale price of $57.72 per share, with individual trades occurring between $57.31 and $58.31.

How many MP Materials (MP) shares does the CFO own after this sale?

Following the reported transaction, the CFO directly beneficially owns 194,812 shares of MP Materials Corp. common stock.

Was the MP Materials (MP) insider sale made under a Rule 10b5-1 plan?

Yes. The sales were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 11, 2025.

What is the reporting person’s role at MP Materials (MP)?

The reporting person is an officer of MP Materials Corp., serving as the company’s Chief Financial Officer.

Is this MP Materials (MP) Form 4 filed by one or multiple reporting persons?

The Form 4 is indicated as being filed by one reporting person.