MOUNTAIN PASS, Calif.–(BUSINESS WIRE)–MP Materials Corp. (NYSE: MP) (“MP Materials” or the “Company”), today announced the commencement, subject to market and other conditions, of a proposed registered secondary public offering of 4,000,000 shares of common stock by certain existing stockholders of the Company (the “Selling Stockholders”). The underwriters will have a 30-day option to purchase up to an additional 600,000 shares of common stock from Selling Stockholders. MP Materials is not se