---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-25-181948"
form_type: "8-K"
ticker: "MP"
cik: "0001801368"
company_name: "MP Materials Corp. / DE"
filed_at: "2025-08-15T23:59:59+00:00"
generated_at: "2026-05-17T12:29:20.086091+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.4
calibrated_materiality_score: 0.4
confidence: "high"
source: SEC EDGAR
---

# MP Materials files resale prospectus for up to 24.5M shares held by U.S. DoD

## Summary
- Filed prospectus supplement to register resale of up to 24,521,672 common shares by U.S. Department of Defense.
- Shares issuable upon conversion of preferred stock and/or exercise of warrant from prior July 2025 agreement.
- Company will not receive any proceeds from any sales by DoD.
- Filing does not indicate DoD intends to convert/exercise; registration fulfills contractual obligation.
- Legal opinion on share validity attached as Exhibit 5.1.

## SEC filing metadata
- accession: 0001193125-25-181948
- form_type: 8-K
- ticker: MP
- cik: 0001801368
- company_name: MP Materials Corp. / DE
- filed_at: 2025-08-15T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.4
- calibrated_materiality_score: 0.4
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1801368/000119312525181948/0001193125-25-181948-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1801368/000119312525181948/d85366d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-25-181948
- JSON: https://secwatch.observer/filing/0001193125-25-181948.json
- Plain text: https://secwatch.observer/filing/0001193125-25-181948.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.