GC One Report 2023 [EN]

1. Solution Creation Company Limited List of Directors Position 1 Mr. Chaya Chandavasu Chairman 2 Assoc. Prof. Dr. Singh Intrachooto Director 3 Mr. Pirat Sirikwanchai Director 4 Miss Kornkamol Korpaisarn Director 5 Mr. Airin Rattanaiyathikul Director/ Managing Director 2. GC Maintenance and Engineering Company Limited List of Directors Position 1 Mr. Pirun Krimwongrut Chairman 2 Mr. Toasaporn Boonyapipat Director 3 Mr. Paisarn Sarapee Director 4 Mrs. Jeeranee Pimthanothai Director 5 Mr. Sarawuth Nuntavadeepisarn Director/ Managing Director 3. NPC Safety and Environmental Service Company Limited List of Directors Position 1 Mr. Pirun Krimwongrut Chairman 2 Mr. Paisarn Sarapee Director 3 Mr. Ratchada Sawasdirak Director 4 Mr. Sakesiri Piyavej Director 5 Mr. Prakart Buttamart Director/ Managing Director 4. GC Treasury Center Company Limited List of Directors Position 1 Miss Pattaralada Sa-ngasang Chairman 2 Mr. Siridech Kumvongdee Director 3 Miss Kanoknun Buranapunsri Director 4 Mr. Chakrid Nondakovit Director/ Managing Director 5. GC Estate Company Limited List of Directors Position 1 Mr. Pirun Krimwongrut Chairman 2 Mr. Anutin Chuaypen Director 3 Mr. Panchoak Auetanapa Director 4 Mr. Rachean Chanthaweekul Director 5 Mrs. Wacharee Hanwongpaiboon Director/ Managing Director List of Directors in Subsidiaries wholly 100% owned by GC (As of 16 February 2024) 6. GC Marketing Solutions Company Limited List of Directors Position 1 Mr. Saroj Putthammawong Chairman 2 Miss Kornkamol Korpaisarn Director 3 Mr. Thitipol Artsanchorn Director/ Managing Director 7. PTTGC America Corporation List of Directors Position 1 Mr. Narongsak Jivakanun Chairman 2 Mr. Pirun Krimwongrut Director 3 Miss PattaraladaSa-ngasang Director 4 Mrs. Chananchida Wiboonkanarak Director 5 Mr. Panod Awaiwanond Director/ Managing Director 8. PTTGC International Private Limited List of Directors Position 1 Mr. Kongkrapan Intarajang Chairman 2 Mr. Saroj Putthammawong Director 3 Miss PattaraladaSa-ngasang Director 4 Mrs. Chananchida Wiboonkanarak Director 5 Mr. Narongsak Jivakanun Director/ Managing Director 9. GC Ventures Company Limited List of Directors Position 1 Mr. Narongsak Jivakanun Chairman 2 Mrs. Chananchida Wiboonkanarak Director 3 Mr. Chaya Chandavasu Director 4 Mr. Kamel Ramdani Director/ Managing Director 396

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