Investor Update April 2022

Trading Business: QoQ: Soften EBITDA due to lower gross margin despite increased sales volume 2021 vs 2020 : Enhanced EBITDA mainly due to improved domestic condensate margin and sales volume Gross Margin¹ Unit: THB/Liter 0.06 0.16 44% QoQ 50% YoY I 43% Sales Volume2 Unit: MM Liter 48% QoQ 5% 34% YoY I I 75,527 79,134 0.10 0.09 0.07 18,741 25,082 16,906 Trading - EBITDA³ Unit: MMTHB 25% QoQ >100% YoY I 3,024 1,942 1,449 265 4Q20 3Q21 4Q21 2020 1 PTT Trading BU + trading subsidiaries: FX Adjusted + gain/loss on derivatives + Joint Trade Agreement (JTA) 2 PTT Trading BU + trading subsidiaries + JTA 3 PTT Trading BU + trading subsidiaries: FX Adjusted + gain/loss on derivatives 4Q20 3Q21 4Q21 2020 2021 Key Highlights 80% ૨૦૨ 5,436 2021 ptt Margin decreased due to loss on mark to market in 4Q21 + Increased sales vol. from higher crude out-in and out-out activities following demand recovery - EBITDA dropped following lower gross margin 2021 vs 2020 + Higher gross margin mainly from domestic condensate as well as out-out trading products e.g., LNG, LPG, and Aromatics + Volume increased due to global demand recovery from the easing of lockdown + EBITDA improved from higher gross margin and sales volume 40

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