PTTEP Financial and Operational Overview

E&P Portfolio | Thailand, Myanmar, Malaysia Myanmar Production Zawtika (WI 80%) • Production Volume gas 324 MMSCFD (3M2023) Yadana (WI 37.1%) • Production Volume gas 538 MMSCFD (3M2023) Exploration M3 (WI 100%) • Pending development Malaysia Production Block K (WI Kikeh 56%, SNP 22.4%, GK 7.2%) • Production Volume crude 25 KBPD and gas 18 MMSCFD (3M2023) Block H (WI Rotan 56%, Others 42%) • Production Volume gas 174 MMSCFD (3M2023) SK309 and SK311 (WI 42-59.5%) Including East Patricia field • Production Volume gas 223 MMSCFD, and crude 15 KBPD (3M2023) Exploration • SK410B (LLB), SK417, SK314A, SK438, SK405B • PM415, PM407, SK325 PTTEP Thailand Myanmar S1 Sinphuhom E5 M3 Thailand Yadana Zawtika MD7 Contract 4 G1/65 B8/32 & 9A G1/61 (Erawan) Arthit Bongkot & G2/61 MTJDA G3/65 Sabah H Sabah K SK410B SK325 SK438 Malaysia PM 415 SK405B PM 407 SK417 SK309& SK314A SK311 Production G1/61 Erawan (WI 60%) • 3M2023 daily gas production 210 MMSCFD Ramp-up in progress to 800 MMSCFD in Apr 2024 • Sole investment 100% G2/61 Bongkot (WI 100%) • PSC transition completed since 8 Mar 2023. • Daily gas production at more than 800MMSCFD (will be producing at 700MMSCFD from Jan 2024 onward) Arthit (WI 80%) • Production Volume gas 290 MMSCFD and condensate 15 KBPD (3M2023) Contract 4 (WI 60%) • Production Volume gas 420 MMSCFD and condensate 15 KBPD (3M2023) S1 (WI 100%) • Production Volume crude oil 25 KBPD (3M2023) MTJDA (WI 50%) • Production Volume gas 330 MMSCFD (3M2023) • Supplying to Thailand at least 30 MMSCFD Production Exploration 25 25 Exploration • G1/65 and G3/65

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