PTTEP Project and Financial Overview

Projects | Thailand, Myanmar and Malaysia Myanmar • 3 producing gas fields supplying gas to both Thailand and Myanmar: Yadana, Yetagun and Zawtika • Operate Zawtika project, start up in March 2014 with current gas supply of 326 MMSCFD for 3M2022 Project Status • Zawtika (80% WI) Production • Yadana (25.5% WI) • Yetagun* (19.3% WI) FDP • M3 (100% WI) MYANMAR S1 Sinphuhom MOGE3 Thailand ၁ဝ Production/Ramp-up Projects Bongkot (66.6667% WI) Yadana M3 THAILAND Average natural gas and condensate sales volume of 819 MMSCFD and 22 KBPD in 3M2022 Zawtika M11 MD7 Yetagun B8/32 & 9A S1 (100% WI) The largest onshore crude oil production field in Thailand with 3M2022 average crude oil sales volume of 25 KBPD Arthit (80% WI) Contract 4 Average sales volume in 3M2022 was 277 MMSCFD of natural gas and 15 KBPD of condensates Contract 4 (60% WI) • Average sales rate of 403 MMSCFD for natural gas and 16 KBPD for condensate in 3M2022 G1/61 (60% WI) • Operatorship transfer completed. Current production rate of 200-250MMSCFD. • Sole investment 100% G2/61 (100% WI) • GBS transition completed at production rate of 200 MMSCFD. Production phase Exploration phase E5 PTTEP South China Sea Sabah K SK417 Sabah H SK309 & SK311 SK314A Malaysia Production Block K Project: Kikeh (56% WI), Siakap North-Petai (SNP) (22.4% WI) and Gumusut-Kakap (GK) (7.2% WI) Average production volume in 3M2022 was 32* KBPD of crude oil and 27* MMSCFD of natural gas SK309 and SK311 Project: (59.5% WI) For East Patricia field (42% WI) • Average production volume in 3M2022 was 193* MMSCFD of natural gas and 20* KBPD of condensates and crude Block H Project: Rotan field (56% WI) Remaining Area (42% WI) • First gas early February 2021 with average production volume in 3M2022 at 275 MMSCFD of natural gas • Full capacity at 270 MMSCFD Exploration For Block K, gross production is net off utilization Sarawak SK410B Project (42.5% WI) • Multi TCF gas discovery in Lang Lebah Field . Expected to reach Final Investment Decision (FID) in 2023 Sarawak SK417 and Sarawak SK405B projects • New Petroleum discoveries with additional well drilling to assess upside potential Sabah SB412 • New block awarded from 2021 Malaysia Bid Round • The project is under preparation for Exploration activities. Note: WI - working interest Erawan Arthit Bongkot MTJDA SK410B MALAYSIA PM415 SK438 SK405B PM407 30 30

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