Changes in Beneficial Ownership · 4
MP Materials Corp. / DE
Changes in Beneficial Ownership
Structured filing — 4
wk-form4_1790814277.xml
Filing details
- Report period
- 2026-09-30
- Issuer
- MP Materials Corp. / DE
- Issuer CIK
- 0001801368
- Trading symbol
- MP
Reporting owner 1
- Name
- DUCKWORTH CONNIE K
- Reporting owner CIK
- 0001180940
- Relationship
- Director
- Address
- 1700 S. PAVILION CENTER DRIVE, SUITE 800, LAS VEGAS, NV, 89135
Non-derivative transactions
| Security | Transaction date | Code | Amount | A / D | Price (USD) | Owned after | Ownership |
|---|---|---|---|---|---|---|---|
| Common Stock | 2026-09-30 | A · Form 4 | 740[F1] | A | 0 | 42,514 | D |
Table key
- A · Form 4
- Acquisition by grant, award or otherwise under Rule 16b-3(d)
- A
- Acquired
- D
- Direct
Footnotes
- 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.↩ 1
Signature 1
- Signed
- /s/ Elliot D. Hoops, Attorney-In-Fact for Connie K. Duckworth
- Date
- 2026-09-30
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.