Andrew A. McKnight - 09 Jun 2026 Form 4 Insider Report for MP Materials Corp. / DE (MP)

Reporting relationship: Director
Issuer ticker: MP
Reported as of: 09 Jun 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 10 Jun 2026, 20:34:16 UTC
Prior SEC filing: 25 Feb 2026
Source filing: View source filing
Reporting owner signature: /s/ Elliot D. Hoops, Attorney-In-Fact for Andrew A. McKnight

Key filing fact

Andrew A. McKnight filed Form 4 for MP Materials Corp. / DE (MP) on 10 Jun 2026.

Key facts

This page summarizes Andrew A. McKnight's Form 4 filing for MP Materials Corp. / DE (MP).
1 reported transaction and 1 derivative row are listed below.
Accepted by SEC: 10 Jun 2026, 20:34.

Change

Previous filing in this sequence was filed on 25 Feb 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001680357 Primary reporting owner

McKnight Andrew A.

Relationship: Director
Address: 1700 S. PAVILION CENTER DRIVE, SUITE 800, LAS VEGAS
Signature: /s/ Elliot D. Hoops, Attorney-In-Fact for Andrew A. McKnight
Signature date: 10 Jun 2026

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

MP transaction Derivative

Restricted Stock Units

Award

Transaction value
Shares: +3,038
Change %
Price: $0.000000^*
Shares after: 3,038
Date: 09 Jun 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 3,038
Exercise price
Footnotes: F1

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 1 footnote

Footnote F1

Each restricted stock unit ("RSU") represents a contingent right to receive one share of MP Materials Corp. ("Issuer") Class A common stock. These RSUs vest on the earlier of: (i) June 15, 2027; and (ii) the next annual meeting of the Issuer's stockholders, subject to the reporting person's continued service through the applicable vesting date, and settled upon the earlier to occur of (x) June 15th following the fifth anniversary of the vesting date; (y) a "change in control event" within the meaning of Section 409A of the Internal Revenue Code; and (z) the date of the director's separation from service. These RSUs fully vest upon a change in control of the Issuer or the director's termination of service due to death or disability.