PTTEP Project and Financial Overview

Results | Unit Cost Unit: $/BOE 40 30 28.52 29.51 26.54 27.96 Cash Cost 20 15.66 Unit Cost 13.25 Х 13.11 12.10 ✗ 10 DD&A Finance Cost Royalties G&A Exploration Expenses Operating Expenses Lifting Cost Note: 2021 Q4 21 Q1 22 Q1 21 15.27 13.85 13.43 15.86 1.33 1.31 1.35 1.39 3.49 3.69 4.27 3.41 2.22 3.05 2.23 2.12 0.54 0.51 0.15 0.12* 5.67 7.10 5.11 5.06 4.13 4.33 3.87 4.15 * Exclude Exploration assets write-off in Brazil for Q1 21 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 14 PTTEP

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