MP Materials Corp.: Chief accounting officer David Gregory Infuso sold 338 shares

What happened The filing says David Gregory Infuso, chief accounting officer, had 338 shares withheld to satisfy tax withholding obligations related to restricted stock units that vested on Oct 13, 2026. The filing lists a per-share withholding price of $42.43 and a total value of $14,341.

Key details

• Transaction date and price: Oct 13, 2026; $42.43 per share (transaction code F).
• Shares involved: 338 shares withheld (disposed).
• Shares owned after the transaction: not reported in the filing.
• Footnote: F1 states the shares were withheld to satisfy tax withholding obligations applicable to the vesting of restricted stock units that vested on Oct 13, 2026.
• Filing date and timeliness: filing submitted on Oct 13, 2026; the filing does not indicate it was late.

Why it may matter

• The filing indicates a tax-withholding disposition of vested restricted stock units (shares withheld to satisfy tax obligations rather than an open-market sale).
• This filing does not show why the insider traded or why the company acted.