Work Experiences (5-years past experiences) 1 Oct 2020 - 31 Jan 2022 Senior Executive Vice President - Downstream Petrochemical Business and Acting Senior Vice President - Green Chemicals Business Unit, PTT Global Chemical Public Company Limited 1 Oct 2019 - 30 Sep 2020 Acting Senior Executive Vice President - Downstream Petrochemical Business, PTT Global Chemical Public Company Limited May 2019 - Nov 2019 Chairman, GC Styrenics Company Limited Jan 2018 - Oct 2019 Chairman, GC Logistics Solutions Company Limited Jan 2018 - Oct 2019 Chairman, PL Global Transport Company Limited Jan 2018 - Sep 2019 Senior Vice President - Polymers Business Unit, PTT Global Chemical Public Company Limited Jan 2018 - May 2019 Director, GC Styrenics Company Limited Jul 2017 - Dec 2017 Senior Vice President - Down stream Petrochemical Business, PTT Global Chemical Public Company Limited Jan 2016 - Jul 2017 Director and Managing Director, GC Glycol Company Limited Jan 2016 - Jun 2017 Senior Vice President - EO-Based Performance Business Unit, PTT Global Chemical Public Company Limited Shareholding : Spouse 198 Shares (0.000004%) As of 31 December, 2021 Relation among Family with other Directors, Management, Major Shareholders of the Company or Subsidiaries : None Mr. Wiboon Chuchepchunkamon Chief Operating Officer - Center of Excellence Age : 59 Appointed : February 1st, 2022 Education/Training • Master of Management, Sasin Graduate Institute of Business Administration of Chulalongkorn University • Master of Science (Petroleum and Petrochemical), Petroleum and Petrochemical College, Chulalongkorn University • Bachelor of Engineering (Electrical Engineering), Chulalongkorn University • The Executive Program in Energy Literacy for a Sustainable Future, Class 13, 2019, Thailand Energy Academy (TEA) • Stanford - NUS Executive Program in International Management, The Republic of Singapore • Harvard - Leadership Development, Shanghai, The People’s Republic of China • Director’s Legal Liabilities, Ethical Leadership for new Era and High Performing Board & Board Effectiveness 2021 (In-house Programs by GC) Role of the Chairman Program (RCP) Class 47/2019 and Director Certification Program (DCP) Class 219/2016, Thai Institute of Directors Association (IOD) Board member/Management in Listed Company – The Stock Exchange of Thailand : 2 • Chief Operating Officer - Center of Excellence, PTT Global Chemical Public Company Limited • Director, Vice Chairman of the Board of Directors and Member of the Nomination and Remuneration Committee, Vinythai Public Company Limited Board member/Management in Non-Listed Company – The Stock Exchange of Thailand : 10 • Chairman, PTT Phenol Company Limited • Chairman, Solution Creation Company Limited • Chairman, GC Glycol Company Limited • Chairman, GC Oxirane Company Limited • Chairman, Revolve Group Limited • Director, GC-M PTA Company Limited • Director, GC Marketing Solutions Company Limited • Director, HMC Polymers Company Limited • Director, Kuraray GC Advanced Materials Company Limited • Director, Thai PET Resin Company Limited 361 BUSINESS OPERATION AND PERFORMANCE CORPORATE GOVERNANCE FINANCIAL REPORTS AND FINANCIAL STATEMENTS APPENDIX
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