Randall Weisenburger (NYSE: MP) receives 3,998 MP Materials shares

Rhea-AI Filing Summary

MP Materials director Randall J. Weisenburger acquired 3,998 shares of common stock through the settlement of previously granted restricted stock units. These units were granted on November 17, 2020, vested on June 1, 2021, and delivery of the shares was deferred until June 15, 2026. After this equity award settled, he directly holds 150,899 shares of MP Materials common stock, and no shares were sold in this transaction.

Insights

Equity Compensation Analyst

Routine RSU settlement adds 3,998 MP shares to director’s holdings.

Director Randall J. Weisenburger settled 3,998 restricted stock units into MP Materials common shares. The award was granted in November 2020, vested in June 2021, and was simply delivered on the deferred date of June 15, 2026.

This is compensation-related, coded as an M transaction for derivative exercise/conversion, with no open-market buying or selling. Following the settlement, he owns 150,899 common shares directly, and there are no remaining derivative holdings disclosed in this filing.

Because there was no sale and no cash transaction disclosed, the event mainly reflects the final delivery of an older equity grant rather than a new directional view on MP Materials’ stock.

Insider Trade Summary

3,998 shares exercised/converted

Mixed 2 txns

Insider WEISENBURGER RANDALL J

Role null

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Units	3,998	$0.00	--
Exercise	Common Stock	3,998	$0.00	--

Holdings After Transaction: Restricted Stock Units — 0 shares (Direct, null); Common Stock — 150,899 shares (Direct, null)

Footnotes (1)

1. Restricted stock units convert into common stock on a one-for-one basis. On November 17, 2020, the reporting person was granted 3,998 restricted stock units, which vested on June 1, 2021, and the reporting person's receipt of the shares of common stock was deferred until June 15, 2026.

Key Figures

RSUs settled: 3,998 shares Post-transaction holdings: 150,899 shares Grant date: November 17, 2020 +3 more

6 metrics

RSUs settled 3,998 shares Restricted stock units converting into common stock on June 15, 2026

Post-transaction holdings 150,899 shares Common stock directly held after RSU settlement

Grant date November 17, 2020 Date 3,998 restricted stock units were granted

Vesting date June 1, 2021 Date the restricted stock units vested

Delivery date June 15, 2026 Deferred date when RSUs were settled into common shares

Transactions coded M 2 entries One non-derivative common stock entry and one derivative RSU entry

Key Terms

Restricted stock units, derivative security, vested

3 terms

Restricted stock units financial

"Restricted stock units convert into common stock on a one-for-one basis."

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

derivative security financial

"transaction_code_description: Exercise or conversion of derivative security"

A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.

vested financial

"which vested on June 1, 2021, and the reporting person's receipt of the shares"

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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).

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^*

WEISENBURGER RANDALL J

(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)
06/15/2026

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	06/15/2026		M		3,998	A	(1)	150,899	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
Restricted Stock Units	(1)	06/15/2026		M			3,998	(2)	(2)	Common Stock	3,998	$0	0	D

Explanation of Responses:

1. Restricted stock units convert into common stock on a one-for-one basis.

2. On November 17, 2020, the reporting person was granted 3,998 restricted stock units, which vested on June 1, 2021, and the reporting person's receipt of the shares of common stock was deferred until June 15, 2026.

Remarks:

	/s/ Elliot D. Hoops, Attorney-In-Fact for Randall J. Weisenburger	06/15/2026
	** 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)

FAQ

What did MP (MP Materials) director Randall Weisenburger report on this Form 4?

He reported the settlement of 3,998 restricted stock units into MP Materials common stock. These units had vested earlier, and the shares were delivered on a deferred date, increasing his directly held common shares to 150,899 with no shares sold.

How many MP Materials shares did Randall Weisenburger acquire in this transaction?

He acquired 3,998 shares of MP Materials common stock through the conversion of restricted stock units. The RSUs converted on a one-for-one basis into common shares, reflecting an equity compensation event rather than an open-market purchase or sale of stock.

When were the MP restricted stock units granted and when did they vest?

The restricted stock units were granted on November 17, 2020, and vested on June 1, 2021. Although vesting occurred in 2021, actual receipt of the underlying common shares was deferred until June 15, 2026, when this Form 4 transaction was reported.

Did Randall Weisenburger sell any MP Materials shares in this Form 4 filing?

No, he did not sell any shares in this filing. The Form 4 only shows an M-code transaction, reflecting the exercise or conversion of restricted stock units into 3,998 common shares, with no reported open-market sales or other dispositions of MP stock.

What is Randall Weisenburger’s MP Materials share ownership after this RSU settlement?

After the RSU settlement, he directly owns 150,899 shares of MP Materials common stock. This figure reflects his post-transaction holdings as disclosed in the Form 4, following the delivery of 3,998 shares from previously granted restricted stock units.