Piedmont Lithium Project Portfolio

END NOTES Copies of the documents referred to in the end notes below can be found on the Company's website or in our SEC filings. U.S. Government EV Focus 4. Grant funding subject to finalization of terms and conditions between Piedmont Lithium and the U.S. Department of Energy. 5. 6. As a result of our grant award, our eligibility for an ATVM loan for Tennessee Lithium may be reduced or we may elect not to pursue an ATVM loan for the Tennessee Lithium Project. There can be no certainty as to the actual interest rate for which Piedmont may be eligible under the ATVM program. Piedmont Project Portfolio 8. 9. Piedmont owns a 25% interest in Sayona Quebec and a 13.6% equity interest in Sayona Mining, resulting in an effective economic interest of ~35%. Refer to 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. 10. Piedmont can earn a 50% interest in Atlantic Lithium's Ghanaian lithium portfolio and owns a 9.4% equity interest in Atlantic Lithium. 11. Production target and economics are based inclusion of inferred mineral resources which have a low level of geological confidence and as such we consider them to be at a scoping study level. Refer to cautionary note on page 3 of this presentation. See Atlantic Lithium announcement "Pre-Feasibility Study Delivers Robust Project Economics" dated September 22, 2022, a copy of which can be found on Atlantic Lithium's website. 12. Refer to Piedmont Lithium press release dated April 20, 2023 for Definitive Feasibility Study. 13. Refer to the result of Piedmont Lithium Bankable Feasibility Study announcement dated December 14, 2021, Estimates prepared pursuant to SEC S-K 1300 and the JORC Code. Piedmont Share of Annual Marketable Capacity 14. Figures represent PLL's pro rata share of year-end nameplate capacity and not projected annual production. 15. Piedmont has an offtake agreement for the greater of 113,000 tpy or 50% of nameplate production. Project nameplate is 190,000tpy life of mine average spodumene concentrate based on feasibility study results announced by Sayona Mining. 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. 16. Piedmont has an earn-in agreement for 50% offtake of SC6 production. Piedmont offtake is based on production results which includes the use of inferred resources which have a low level of geological confidence and as such we consider them to be at a scoping study level. See Atlantic Lithium announcement "Pre-Feasibility Study Delivers Robust Project Economics" dated September 22, 2022, which can be found on Atlantic Lithium's website. Refer to cautionary statement on Page 3 of this presentation. 17. Refer to updated Amended Technical Report Summary for the Carolina Lithium Project filed with our form 10-K/A dated April 25, 2023. 18. Based on estimate of 195,000tpy of SC6 to produce 30,000tpy LiOH. 19. See Piedmont Lithium announcement "Piedmont Lithium Completes Definitive Feasibility Study of Tennessee Lithium Project" dated April 20, 2023. 20. Sayona Mining is undertaking a prefeasibility study to complete the partially-constructed lithium carbonate plant at the North American Lithium facility. PFS expected in Q2 2023. Commercial Arrangements 26. See Piedmont announcement "Piedmont Lithium and Sayona Mining Formalize Restart Plans for North American Lithium in Quebec" dated June 28, 2022. 27. Piedmont offtake is based on production results which includes the use of inferred resources which have a low level of geological confidence and as such we consider them to be at a scoping study level. See Atlantic Lithium announcement "Pre-Feasibility Study Delivers Robust Project Economics" dated September 22, 2022, which can be found on Atlantic Lithium's website. Refer to cautionary statement on Page 3. 28. See Piedmont announcement "Piedmont Lithium and LG Chem Sign Equity Investment and Binding Offtake Agreements" dated February 16, 2023. 29. See Piedmont announcement "Piedmont Lithium Amends Agreement with Tesla" dated January 3, 2023. 27 27 Nasdaq : PLL ASX: PLL PIEDMONT LITHIUM

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