Annual Business Update and ESG Report

Finance | Q1/22 Highlights $5 % Q1'22 Highlights (QoQ) - Average Selling price +10% Liquid +20% Gas +4% Profit (Loss) from normal operation Q1'22 vs Q4'21 Average Sales volume +2% (6KBOED) mainly from increased DCQ of Arthit project from 220 mmscfd to 280mmscfd Outstanding Oil Price Hedging volume $. Q1'22: 11.55 mmbbl Q4'21: 15.4 mmbbl Q4'21 Extra gains 513 Q4'21 Extra gains 170 54 Redeter. of Block K Increase P/L mainly from product price 59 Bongkot Decom. adjustment Non-operating PTTEP Unit: million USD items in Q1'22 240 12 570 Oil price hedging losses Others 57 m$ increase Q4 21 P/L from Q1 22 Other income from Malaysia Block K redetermination normal operation Reduction in DDA from Bongkot Decommissioning Liabilities adjustment 20 20 318 P/L from normal operation 252m$ Loss from non-operating items Q1 22 Net Profit

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