Annual Business Update and ESG Report

Results | Q1/22 Profit and Loss QoQ 321 318 570 513 -192 -252 Q4/21 Q1/22 +2% +10% Increased DCQ for P/L from Average Higher liquid price Average normal operation +57m$ (+10%) Sales Volume Arthit project Selling Price -10% -113$mil Lower unit costs Extra Gains Q4'21: Block K redet and BKT Decom. adj Net Profit P/L from normal operation P/L from non-operating items P/L from normal operation +288m$ (+>100%) PTTEP YOY Unit: million USD 376 318 94 570 282 -252 Q1/21 Q1/22 +12% +27% Oman Block 61 Average Sales Volume and Malaysia SB-H Average Selling Price Higher liquid and gas price -5% Lower unit costs Non- Q1/22 Oil price hedging losses operating items Q4/21 Impairment losses - Mozambique, and Yetagun Non- operating items -346m$ (->100%) Q1/22 Oil price hedging losses Q4/21 Gain from bargain purchase offset with Losses from Brazil assets write-off and oil price hedging -60m$ (-31%) 13

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