PTTEP Operations Overview

Five-Year Plan: Sales Volume Maximize value of existing assets, accelerate G1/G2 transitions & maintain key milestones for key projects Figures have not yet reflected Oman block 61 PTTEP In KBOED CAGR +6% 466 500 462 436 446 Rest of World 400 354 375 Other SEA 300 Sales Volume 200 100 Thailand & MTJDA 0 2020 2021 2022 2023 2024 2025 In MMUSD 6,000 5,617 4,779 4,934 686 4,196 34 73 4,111 OPEX 63 62 (Decommissioning) 4,000 2,900 1,896 1,771 1,778 OPEX 1,545 Investment 30 1,710 554 768 819 493 2,000 1,480 481 233 2,481 2,095 2,206 2,264 1,858 1,157 (exclude decommissioning) CAPEX (Dev & Pre-sanction projects (3) CAPEX (Producing projects (4)) 5 Years (2021-2025) 2020 2021 2022 2023 2024 2025 CAPEX 14,020 OPEX TOTAL 9,617 23,637 Key Project Start-up Block H: 1H Capacity 270 MMSCFD Algeria HBR (phase I): 2H Capacity 10-13 KBPD G1/61: April (2) Capacity 800 MMSCFD G2/61: April (2) Capacity 200 MMSCFD 25 G2/61: March Capacity 700 MMSCFD (2) Mozambique LNG: 1H Capacity 13 MTPA Algeria HBR (Full phase): 2H SK410B (1) Southwest Vietnam: 2H (1) Capacity 50-60 KBPD Initial Capacity 600-800 MMSCFD Capacity 490 MMSCFD Note: (1) Subject to regulatory approval and FID timing (2) According to Production Sharing Contracts signed on 25 February 2019 (3) Development & Pre-sanction projects include Mozambique LNG, Algeria HBR, SK410B, and Southwest Vietnam (4) Includes exploration and appraisal in all projects and head office CAPEX

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