MP Materials Investor Conference Presentation Deck

Mountain Pass Committed to environmental sustainability ● ● ● ● ● Operates world's most sustainable rare earth production facility under stringent California standards Eliminated high-risk wet tailings ponds with dry stack tailings process Developing multi-pronged approach to material recycling Issued $690M convertible green bond in March 2021 Reclaimed -1.7 billion liters of water in last 12 months to meet more than 92% of processing needs Maintaining biodiversity with cactus nursery and other reinvestments into local ecology MP MATERIALS Water Reclamation Facility - Sustainable Water Usage Cactus Nursery - Cultivating Biodiversity 11

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