GC One Report 2023 [EN]

Remarks: = Chairman = Director = Executive No. Name - Surname GC Subsidiaries Associates / Joint Ventures / Related Companies GGC GCME NPC GCTC GCEC GCM GCA Corp GCA GCAS GC Inter GCI GC BV Vencorex GCV GCVA GCP PTT GPSC GCL PLGT PTTAC HMC TTT KGC AVT EOUK NatureWorks 1 Mr. Kongkrapan Intarajang 2 Mr. Saroj Putthammawong 3 Mr. Toasaporn Boonyapipat 4 Mr. Pirun Krimwongrut 5 Mr. Narongsak Jivakanun 6 Miss Pattaralada Sa-ngasang Subsidiaries GGC = Global Green Chemicals Public Company Limited GCME = GC Maintenance and Engineering Company Limited NPC = NPC Safety and Environmental Service Company Limited GCTC = GC Treasury Center Company Limited GCEC = GC Estate Company Limited GCM = GC Marketing Solutions Company Limited GCA Corp = PTTGC America Corporation GCA = PTTGC America LLC GCAS = GC America Sustainability Corporation GC Inter = PTTGC International Private Limited GCI = GC International Corporation GC BV = PTTGC International (Netherlands) B.V. Vencorex = Vencorex Holding GCV = GC Ventures Company Limited GCVA = GC Ventures America Corporation GCP = GC Polyols Company Limited Associates / Joint Ventures GCL = GC Logistics Solutions Company Limited PLGT = PL Global Transport Company Limited PTTAC = PTT Asahi Chemical Company Limited HMC = HMC Polymers Company Limited TTT = Thai Tank Terminal Limited KGC = Kuraray GC Advanced Materials Company Limited AVT = AGC Vinythai Public Company Limited EOUK = Emery Oleochemicals UK Limited NatureWorks = NatureWorks LLC Related Companies PTT = PTT Public Company Limited GPSC = Global Power Synergy Public Company Limited List of GC’S Executives in Subsidiaries / Associates / Joint Ventures / Related Companies (As of 16 February 2024) 395 PTT GLOBAL CHEMICAL PUBLIC COMPANY LIMITED Form 56-1 One Report 2023

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