Director Randall J. Weisenburger filed a Form 4 with the SEC on November 12, 2026, disclosing a purchase of 55,000 shares of MP Materials Corp. common stock on November 10, 2026.

Key Highlights

  • Reporting person: Randall J. Weisenburger, identified as a Director of MP Materials Corp.
  • Transaction: Purchase (transaction code P) of 55,000 shares of common stock on November 10, 2026.
  • Price per share: $36, as reported in the filing.
  • Resulting ownership: 205,899 shares of common stock held directly following the transaction.
  • No derivative securities: Table II of the filing contains no reported derivative transactions.
  • Issuer: MP Materials Corp. / DE, trading on NYSE under the symbol MP (NYSE:MP).

Weisenburger's November 2026 Open-Market Purchase of MP Materials Common Stock

According to the Form 4 filed on November 12, 2026, Randall J. Weisenburger, a director of MP Materials Corp. / DE (NYSE:MP), acquired 55,000 shares of the company's common stock on November 10, 2026. The filing reports the transaction code as "P," indicating an open-market purchase, at a price of $36 per share. The form was signed by Elliot D. Hoops as Attorney-In-Fact for Randall J. Weisenburger.

Following the reported transaction, the filing states that Weisenburger directly beneficially owns 205,899 shares of MP Materials Corp. common stock. The filing does not indicate that any indirect ownership or derivative securities positions were involved in this transaction. Table II of the filing, covering derivative securities, contains no entries.

The filing was submitted pursuant to Section 16(a) of the Securities Exchange Act of 1934, which requires officers, directors, and certain shareholders to report changes in their beneficial ownership of company securities. No amendment date is listed, indicating this is an original filing and not a revision of a prior Form 4.

What Was Disclosed

The filing discloses a single open-market purchase of 55,000 shares of MP Materials Corp. common stock by Director Randall J. Weisenburger on November 10, 2026, at $36 per share, bringing his direct beneficial ownership to 205,899 shares.