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BCS

Changes in Beneficial Ownership · 4

MP Materials Corp. / DE

Changes in Beneficial Ownership

Filed Jun 15, 2026Accepted Jun 15, 2026, 8:00 PM EDTFiling CIK 1801368Accession 0001495449-26-000006
Share

Structured filing — 4

wk-form4_1781568045.xml

Open full document ↗

Filing details

Report period
2026-06-15
Issuer
MP Materials Corp. / DE
Issuer CIK
0001801368
Trading symbol
MP

Reporting owner 1

Name
Lavan Maryanne
Reporting owner CIK
0001495449
Relationship
Director
Address
1700 S. PAVILION CENTER DRIVE, SUITE 800, LAS VEGAS, NV, 89135

Non-derivative transactions

Non-derivative transactions · 1 reported row
SecurityTransaction dateCodeAmountA / DPrice (USD)Owned afterOwnership
Common Stock2026-06-15M · Form 43,998A[F1]23,753D
Table key
M · Form 4
Exempt derivative exercise or conversion under Rule 16b-3
A
Acquired
D
Direct

Derivative transactions

Derivative transactions · 1 reported row
SecurityConversion / exercise price (USD)Transaction dateCodeAmountA / DPrice (USD)ExercisableExpiresUnderlying securityUnderlying sharesOwned afterOwnership
Restricted Stock Units[F2]2026-06-15M · Form 43,998D0[F2][F2]Common Stock3,9980D
Table key
M · Form 4
Exempt derivative exercise or conversion under Rule 16b-3
D
Direct

Footnotes

F1
Restricted stock units convert into common stock on a one-for-one basis.↩ 1
F2
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.↩ 1↩ 2↩ 3

Signature 1

Signed
/s/ Elliot D. Hoops, Attorney-In-Fact for Maryanne Lavan
Date
2026-06-15

Company context

MP Materials (NYSE: MP) is America’s only fully-integrated rare earth producer with capabilities spanning the entire supply chain - from mining and processing to advanced metallization, magnet manufacturing and recycling. MP Materials currently operates the world’s second-largest rare earth mine in Mountain Pass, California - one of the world’s richest rare earth deposits - where it extracts, refines, and separates rare earth materials. The Company also manufactures the world’s strongest and most efficient permanent magnets at its Independence magnetics facility in Texas.

Current securities

Historical securities (4)

Recent company filings

  1. 10-Q filingNov 6, 2026
  2. Results of Operations and Financial ConditionNov 5, 2026
  3. 4 filingSep 30, 2026
  4. 10-Q filingAug 7, 2026
  5. Results of Operations and Financial ConditionAug 6, 2026

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