Thailand Energy Market & PTTEP Business Update

Financial Results | Unit Cost Unit: $/BOE 40 28.52 28.36 ** 28.82 29.32 ** 29.51 30 Cash Cost Unit Cost 20 13.25 14.56 14.50 15.22 Х 15.66 X ✗ 10 2021 2022 Q3 22 Q4 22 Q4 21 DD&A 15.27 13.80 14.32 14.10 13.85 Finance Cost 1.33 1.37 1.42 1.21 1.31 Royalties 3.49 4.02 3.88 3.78 3.69 G&A 2.22 2.46 1.66 3.36 3.05 Exploration Expenses 0.54* 0.42 0.95 0.16 0.51 Operating Expenses 5.67 6.29 6.59 6.71 7.10 Lifting Cost 4.13 4.42 4.50 4.64 4.33 * Note: Exclude Exploration assets write-off in Brazil for 2021 ** Exclude Montara Class action settlement All Unit Cost shown above exclude costs related to new business The formulas for calculating ratios are provided in the supplementary section for your reference 17 PTTEP

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