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E&P: Guidance & Strategy Business Update | E&P Strengthen Core Business G1/61 Thailand Transition and Operatorship transfer completed 24 APR 2022. Proceed to ramp-up activities to achieve 800MMSCFD in 24 months G2/61 Transition of 200MMSCFD completed On track for additional 500 MMSCFD in Mar 2023 Malaysia Myanmar Yadana Become new operator with 37% interest by 20 July 2022 C UAE Sharjah Onshore Area C 25% stake acquisition completed 1 March 2022 On progress of seismic activity SB412 Obtained new block SB412 from MY Bid Round 2021. PSC signed in March 2022. SK410B Prepare to drill 1 more exploration well in 2022 For LLB FID expected in 2023 MZA 1 Mozambique 1st Cargo expected in 2025 awaiting local security situation Business Update Beyond E&P Green Methanol CCS Algeria HBR-Phase I 1st Oil expected in Q2/2022 at 4 KBOED Solar Farm 2022 Guidance Financial Guidance PTTEP Average Sales Volume Average Gas Price* KBOED USD/MMBTU Unit Cost USD/BOE Q2 Q2 Q2 ~467 ~6.2 ~28-29 ~467 ~6.4 Full Year Full Year Full Year 24 Jan 2022: Signed a MOU with multiple international firms to explore Green Methanol value chain, with plan of 50KTPA methanol production plant in Singapore What is Green Methanol? 12 January 2022: Established Thailand CCS Project Task Force to develop CCS initiatives 25 April 2022: Signed a MOU with INPEX and JGC to explore on CCS project in Thailand. 1st Pilot Solar energy project of PTTEP -10 MWp, FID mid 2022 and COD early 2023 100% owned by FST, 100% offtake by $1 Completed FEED and started application of permits and licenses Total Area 40 acres (113 Ra in Kampangpetch, NE Thailand Renewable Energy Biogenic CO₂ Northem powerplant Electrolysis to H₂ H₂ Central Industrial Complex Co L Eastem Industrial Complex CH₂OH Marine Transportation Methanol Synthesis to E-Methanol Southern powerplants Selected CO, sources ARV 21 April 2022: Establishment of B-Med X, a JV between Cariva, a subsidiary of ARV, and BJC Healthcare, subsidiary of BJC To develop an aesthetic marketplace application and expand to healthcare business such as remote healthcare system CARIVA BJC *Based on average Dubai oil price in 2022 at 96 $/BBL, including sole investment in G1/61 (Erawan) Net Zero Our Net Zero Ambition 2020 Base Year EBITDA Margin % of Sales Revenue Q2 ~70-75% Full Year ptt PTTEP 2030 30% GHG Intensity* Reduction 2040 50% GHG Intensity Reduction 2050 NET ZERO Greenhouse Gas Emissions E&P, Operational Control SCOPE 1 & 2 "Intensity refers to GHG released in Tonne CO₂e per thousand tonnes of hydrocarbon production 5 38

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