Piedmont Lithium Project Portfolio

12 NAL RESTART COMPLETED Restart Completed in March as Scheduled; DFS Published in April NAL RESTART24 ■ Only major new source of spodumene concentrate expected in North America in the near-term ■ Commercial operations commenced with deliveries to Port of Quebec City ongoing ■ First commercial shipment to customers targeted for Q3 2023 ■ Continued upgrades underway to improve operational efficiency, reliability, grade, quality, and recoveries DEFINITIVE FEASIBILITY STUDY25 ■ Production target increased to 226,000 tonnes per year for first four years of operation and 190,000 tpy thereafter Included strategic review of Mineral Resource and Reserves resulting in increased head grade ■ PFS for completion of on-site carbonate refinery to be completed in Q2 2023 24. See Piedmont announcement "Sayona Mining and Piedmont Lithium Announce Successful Restart of North American Lithium" dated March 30, 2023, a copy of which can be found on our Company website or in our SEC filings. 25. See Sayona Mining ASX announcement "DFS Confirms NAL Value with A$2.2B NPV" dated April 14, 2023, a copy of which can be found on Sayona Mining's website. Spodumene concentrate at NAL NAL Site

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