Piedmont Lithium Project Portfolio

$10,000 $0 7/31/2017 10/31/2017 1/31/2018 4/30/2018 7/31/2018 BATTERY GRADE LITHIUM HYDROXIDE PRICES (US$/MT) $90,000 $80,000 $70,000 $60,000 10/31/2018 1/31/2019 4/30/2019 7/31/2019 10/31/2019 1/31/2020 4/30/2020 7/31/2020 10/30/2020 LITHIUM PRICES OFF ALL-TIME HIGHS $9,000 $8,000 $7,000 $50,000 $5,000 $40,000 $4,000 Spot Price: $40,750/t $30,000 Piedmont Study Price - $26,000/t $3,000 $20,000 $2,000 Piedmont Study Price - $1,600/t 1/29/2021 4/30/2021 7/30/2021 10/29/2021 1/31/2022 4/29/2022 7/29/2022 10/31/2022 1/31/2023 Current $1,000 $0 $6,000 19 Source: Fastmarkets CIF China 'mid-price' for lithium hydroxide and spodumene 6% through April 28, 2023. "Piedmont Study Price" and "Piedmont Study Percentage" are fixed prices assumed in the financial model developed for our Tennessee Lithium DFS. 7/31/2017 10/31/2017 1/31/2018 4/30/2018 7/31/2018 10/31/2018 1/31/2019 4/30/2019 7/31/2019 10/31/2019 1/31/2020 4/30/2020 7/31/2020 10/30/2020 1/29/2021 4/30/2021 7/30/2021 10/29/2021 1/31/2022 4/29/2022 7/29/2022 10/31/2022 1/31/2023 SPODUMENE CONCENTRATE 6% PRICES (US$/MT) Current 0.0% 7/31/2017 Spot Price: $4,050/t 4.0% 2.0% 10/31/2017 1/31/2018 4/30/2018 7/31/2018 10/31/2018 1/31/20 1/31/2019 4/30/2019 Nasdaq: PLL 7/31/2019 8.0% 000 6.0% 10/31/2019 1/31/2020 4/30/2020 7/31/2020 10/30/2020 10.0% SC6% PRICES AS A PERCENT OF BATTERY GRADE LITHIUM HYDROXIDE 12.0% Piedmont Study Percentage - 6.2% 1/29/2021 4/30/2021 7/30/2021 10/29/2021 ASX: PLL PIEDMONT LITHIUM 1/31/2022 ZZOZ/IS/L 4/29/2022 7/29/2022 10/31/2022 1/31/2023 Current

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