X0306 4 2020-12-31 0001801368 MP Materials Corp. / DE MP 0001680357 McKnight Andrew A. C/O 1345 AVENUE OF THE AMERICAS 46TH FLOOR NEW YORK NY 10105 true Class A common stock, par value $0.0001 per share 2020-12-31 4 J 0 635638 A 635638 D The Reporting Person received a distribution-in-kind of shares from a stockholder for no additional consideration in proportion to the Reporting Person's economic interest. Such shares remain subject to the terms of a lock-up with the Issuer. /s/Andrew McKnight 2021-01-05