X0508 4 2024-01-12 0 0001801368 MP Materials Corp. / DE MP 0001831746 Litinsky James H. 1700 S. PAVILION CENTER DRIVE, SUITE 800 LAS VEGAS NV 89135 1 1 1 0 Chairman and CEO 0 Common Stock 2024-01-12 4 A 0 105264 0.00 A 530195 D Common Stock 18516485 I Held by James Henry Litinsky, Trustee of James Henry Litinsky Revocable Trust u/a/d 10/19/2011 The securities reported are restricted stock units that vest in four annual installments beginning on the first anniversary of the grant date. Each restricted stock unit represents the contingent right to receive, upon vesting of the unit, one share of the issuer's common stock. James Litinsky as sole trustee of the James Henry Litinsky, Trustee of James Henry Litinsky Revocable Trust u/a/d 10/19/2011. /s/ Elliot D. Hoops, Attorney-In-Fact for James H. Litinsky 2024-01-16