MP Materials director receives stock grant for 740 shares

MP Materials Corp. (MP) director Connie K. Duckworth received an award of 740 deferred stock units (DSUs) on September 30, 2026, in connection with her election to defer cash retainers.

Rhea-AI Filing Summary

MP Materials Corp. (MP) director Connie K. Duckworth received an award of 740 deferred stock units (DSUs) on September 30, 2026, in connection with her election to defer cash retainers. Each DSU represents a right to receive one share of common stock, and the DSUs were fully vested on grant. Reported holdings following the award were 42,514 shares. Settlement occurs at the earliest of June 15 following the close of the fifth calendar year after the year the retainers are earned, certain changes in control, or her separation from service.

Insider Trade Summary

Grant/Award: 740 shares

Grant/Award 1 txn

Insider DUCKWORTH CONNIE K

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock F1	740	$0.00	$0.00

Holdings After Transaction: Common Stock — 42,514 shares (Direct)

Footnotes (1)

1. F1. Represents deferred stock units ("DSUs") awarded in connection with the election to defer cash retainers by the reporting person. Each DSU represents a right to receive a share of the registrant's common stock and are fully vested on grant. The DSUs will be settled upon the earlier to occur of the following: (i) June 15th occurring following the close of the fifth calendar year following the close of the calendar year in which the cash retainers are earned; (ii) certain changes in control of the registrant; and (iii) the date of the reporting person's separation from service.

Key Figures

DSUs awarded: 740 DSUs Reported holdings after award: 42,514 shares Shares represented per DSU: 1 share per DSU +1 more

4 metrics

DSUs awarded 740 DSUs Awarded September 30, 2026

Reported holdings after award 42,514 shares Following the September 30, 2026 award

Shares represented per DSU 1 share per DSU Each DSU represents a right to receive a share of common stock

Deferred settlement timing June 15 following the close of the fifth calendar year after the year the cash retainers are earned One of the settlement triggers

Key Terms

deferred stock units (DSUs), cash retainers, fully vested, separation from service

4 terms

deferred stock units (DSUs) financial

"Represents deferred stock units ("DSUs") awarded"

Deferred stock units (DSUs) are a form of long-term pay that promises an employee or director future company shares or cash equal to the share value at a later date, usually after leaving the company or at a set vesting time. Think of them as a delayed paycheck tied to the stock: they align recipients’ interests with long-term share performance and matter to investors because they create potential future dilution and signal how management is rewarded and incentivized.

cash retainers financial

"election to defer cash retainers"

fully vested financial

"are fully vested on grant"

separation from service financial

"date of the reporting person's separation from service"

FAQ

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

How many DSUs did MP director Connie K. Duckworth receive?

Connie K. Duckworth received 740 DSUs on September 30, 2026. Each DSU represents a right to receive one share of MP Materials Corp. common stock, and the DSUs were fully vested on grant. Her reported holdings following the award were 42,514 shares.

When do Connie K. Duckworth's MP DSUs settle?

The DSUs settle at the earliest of June 15 following the close of the fifth calendar year after the calendar year in which the cash retainers are earned, certain changes in control, or her separation from service.

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

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Available on EDGAR 09/30/2026 - 08:25 PM Accepted by SEC EDGAR 09/30/2026 - 08:24 PM Learn about SEC filing dates

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).

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^*

DUCKWORTH CONNIE K

(Last) (First) (Middle)

1700 S. PAVILION CENTER DRIVE, SUITE 800

(Street)

LAS VEGAS NEVADA 89135

(City) (State) (Zip)

UNITED STATES

(Country)

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

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/30/2026

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

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

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

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	09/30/2026		A		740(1)	A	$0	42,514	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. Represents deferred stock units ("DSUs") awarded in connection with the election to defer cash retainers by the reporting person. Each DSU represents a right to receive a share of the registrant's common stock and are fully vested on grant. The DSUs will be settled upon the earlier to occur of the following: (i) June 15th occurring following the close of the fifth calendar year following the close of the calendar year in which the cash retainers are earned; (ii) certain changes in control of the registrant; and (iii) the date of the reporting person's separation from service.

Remarks:

	/s/ Elliot D. Hoops, Attorney-In-Fact for Connie K. Duckworth	09/30/2026
	** 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.
* Form 4: SEC 1474 (03-26)