MP Materials (NYSE: MP) General Counsel sells 6,958 shares under 10b5-1 plan

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

Yes, the reported sale was made under a Rule 10b5-1 plan. A footnote states the transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 20, 2025, indicating the sale was pre-arranged in advance.

Filing Impact

(Very High)

Filing Sentiment

(Negative)

Form Type

Rhea-AI Filing Summary

MP Materials Corp. General Counsel and Secretary Elliot Dean Hoops reported an open-market sale of company stock. On the reported date, he sold 6,958 shares of MP common stock at $75.00 per share in an open-market transaction. After this sale, he directly held 54,095 shares of common stock. The filing also notes an additional 1,000 shares of common stock held indirectly through his spouse. According to a footnote, the sale was executed under a pre-arranged Rule 10b5-1 trading plan adopted by the reporting person.

Insider Trade Summary 10b5-1

Net Seller: 6,958 shares ($521,850)

Net Sell 2 txns

Insider Hoops Elliot Dean

Role General Counsel and Secretary

Sold 6,958 shs ($522K)

Type	Security	Shares	Price	Value
Sale	Common Stock	6,958	$75.00	$522K
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 54,095 shares (Direct, null); Common Stock — 1,000 shares (Indirect, By Spouse)

Footnotes (1)

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Key Figures

Shares sold: 6,958 shares Sale price: $75.00 per share Direct holdings after sale: 54,095 shares +1 more

4 metrics

Shares sold 6,958 shares Open-market sale of common stock

Sale price $75.00 per share Price for common stock sale

Direct holdings after sale 54,095 shares Common stock directly owned post-transaction

Indirect holdings by spouse 1,000 shares Common stock held indirectly through spouse

Key Terms

Rule 10b5-1 trading plan, open-market sale, indirect ownership, Common Stock

4 terms

Rule 10b5-1 trading plan regulatory

"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

open-market sale financial

"transaction_action: open-market sale"

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

indirect ownership financial

"ownership_type: indirect, nature_of_ownership: By Spouse"

Common Stock financial

"security_title: Common Stock"

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

Form 4 Insider Transactions: What Each Field Means →

05/08/2026 - 09:24 PM

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^*

Hoops Elliot Dean

(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)

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	General Counsel and Secretary

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/08/2026

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	05/08/2026		S⁽¹⁾		6,958	D	$75	54,095	D
Common Stock								1,000	I	By Spouse

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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

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 November 20, 2025.

Remarks:

	/s/ Elliot D. Hoops	05/08/2026
	** 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)

Source: View Original Filing on SEC EDGAR

FAQ

What insider transaction did MP (MP) report in this Form 4 filing?

MP Materials reported an insider stock sale by its General Counsel. Elliot Dean Hoops sold 6,958 shares of MP common stock in an open-market transaction at $75.00 per share, while retaining a sizeable remaining direct and indirect share position after the sale.

How many MP (MP) shares did Elliot Dean Hoops sell and at what price?

Elliot Dean Hoops sold 6,958 MP common shares at $75.00 each. The transaction was classified as an open-market sale, reflecting a single non-derivative transaction in common stock as disclosed in the Form 4 insider trading report.

How many MP (MP) shares does Elliot Dean Hoops hold after the reported sale?

After the sale, Hoops directly holds 54,095 MP common shares. The filing also reports an additional 1,000 MP common shares held indirectly through his spouse, providing investors with context on his total reported economic exposure to the company’s stock.

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

Yes, the reported sale was made under a Rule 10b5-1 plan. A footnote states the transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 20, 2025, indicating the sale was pre-arranged in advance.

What role does Elliot Dean Hoops hold at MP (MP)?

Elliot Dean Hoops serves as General Counsel and Secretary of MP Materials. As a company officer, his transactions in MP common stock must be reported on Form 4, giving public visibility into his direct and indirect equity holdings and any open-market trades.

Does the Form 4 for MP (MP) include any derivative security exercises?

No derivative security exercises are reported in this Form 4. The transaction summary shows zero derivative transactions or option exercises, focusing instead on one open-market sale of common stock and one holding entry for indirectly owned shares.