WEISENBURGER RANDALL J 4

What Happened

• Randall J. Weisenburger, a director of MP Materials Corp. (MP), had 3,998 restricted stock units (RSUs) convert into 3,998 shares on June 15, 2026. The Form 4 records an exercise/conversion acquisition of 3,998 shares and a corresponding disposition of 3,998 shares at $0.00 (derivative transaction code M). No cash sale or proceeds are reported.

Key Details

• Transaction date: 2026-06-15 (reported same day).
• Transaction type: Conversion/settlement of RSUs (derivative code M); acquisition of 3,998 shares and a matching $0.00 disposition in the filing.
• Footnotes: F1 — RSUs convert into common stock on a one‑for‑one basis. F2 — The 3,998 RSUs were granted on Nov 17, 2020, vested June 1, 2021, and receipt was deferred until June 15, 2026.
• Shares owned after transaction: Not specified in the filing.
• Timeliness: Filing dated 2026-06-15; no late filing indicated.

Context

• This was a conversion/settlement of previously granted RSUs, not an open‑market purchase or sale. The $0.00 disposition in the Form 4 reflects the derivative settlement reporting (no cash proceeds); it does not indicate a market sale. Conversions of vested RSUs into shares are typically routine compensation/vesting events rather than active trading decisions.