Investor Update April 2022

PTT Group Accounting Structure Data as of 31 Dec 2021 E&P and Gas Business Group International Trading Business Group Petrochemicals & Refining Business Group Consolidate 48.18% 2/ 100.00% Subsidiaries PTT Exploration & Production Plc. PTT Natural Gas Distribution Co., Ltd. PTT LNG Co., Ltd. PTT Global LNG Co., Ltd Consolidate Subsidiaries PTTEP 65.29%2/ PTTNGD 58.00% PTTLNG 100.00% PTTGL 50.00% PTT International Trading Pte. PTT International Trading London Ltd. PTTT Consolidate 100.00% Petrochemical Subsidiaries PTT Global Chemical Plc. 1/ PTT Tank Terminal Co., Ltd. GC PTTTANK PTTT LDN 100.00% PTT International Trading USA Inc. PTTT USA 100.00% Refining Subsidiaries Thai Oil Plc. 1/ IRPC Plc. 1/ TOP IRPC Joint Ventures Equity Trans Thai-Malaysia (Thailand) Co., Ltd. Trans Thai-Malaysia (Malaysia) Sdn. Bhd. Map Ta Phut Air Products Co., Limited TTM (T) 50.00% TTM (M) 50.00% Oil Business Group MAP 49.00% Subsidiaries PTT Oil & Retail Business Plc. OR Consolidate 75.00% Consolidate 48.03% 2/ 48.05% 2/ New Business & Infrastructure Business Group International Investment Business Group Subsidiaries Consolidate Subsidiaries PTT Energy Resources Co., Ltd. Global Power Synergy Co., Ltd¹/ GPSC 75.23% 2/ PTT Digital Solutions Co., Ltd. 1/ PTT Energy Solutions Co., Ltd. ¹/ Energy Complex Co., Ltd. PTT DIGITAL PTTES EnCo 20.00% PTT Green Energy Pte. Ltd PTT Global Management Co., Ltd. PTTER PTTGE PTTGM Consolidate 100.00% 100.00% 100.00% 40.00% 50.00% Joint Ventures District Cooling System and Power Plant DCAP Equity 35.00% Others Baania (Thailand) Co., Ltd. HG Robotics Plc. Innospace (Thailand) Sunfolding, Inc. Luminar Technologies, Inc. Ample, Inc. Subsidiaries Others Business Service Alliance Co., Ltd. 1/ PTT Treasury Center Co., Ltd. BSA PTT TCC Fair value Baania 2.73% Joint Ventures HG Robotics 9.47% Innospace 13.61% Suez Environmental Services Co., Ltd. Others SES Sunfolding 5.59% Luminar Technologies AMPLE 0.07% Sarn Palung Social Enterprise Co., Ltd. Dhipaya Group Holdings Plc. SPSE TIPH 1.13% Remark: 1/Subsidiaries that PTT holds less than 50% but being consolidated because PTT has the power to control the financial and operating policies. 2/ Holding portion of PTT Group (direct & indirect) 3/ PTT holds 100.00% of BSA's ordinary shares, PTT's ownership interest in BSA is 100% Consolidate 25.00%³/ 100.00% Equity 40.00% Fair value 20.00% 13.46% ptt 35

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