X0306 4 2020-11-17 0001801368 MP Materials Corp. / DE MP 0001832050 Rosenthal Michael Stuart 6720 VIA AUSTI PARKWAY, SUITE 450 LAS VEGAS NV 89119 true Chief Operating Officer Class A Common Stock 2020-11-17 4 A 0 1563006 0 A 1563006 D These shares of restricted Class A Common Stock are scheduled to vest over four years, with 40% vesting on the 15-month anniversary of the grant date, 20% vesting on the 27-month anniversary of the grant date, and 20% vesting on each of the 39-month and four-year anniversary of the grant date, subject to Mr. Rosenthal's continued employment through the applicable vesting date and accelerated vesting in the event of a change of control, termination without "cause," resignation due to "good reason", death or termination due to "disability." /s/ Sheila Bangalore as Attorney-in-Fact for Michael Stuart Rosenthal 2020-11-19