GC_ONE REPORT 2021_ENG

Mr. Chaya Chandavasu Executive Vice President - Sustainability Age : 48 Appointed : February 1st, 2022 Education/Training • Doctor of Chemical Engineering, New Jersey Institute of Technology, U.S.A • Master of Chemical Engineering, New Jersey Institute of Technology, U.S.A. • Bachelor of Science (Chemistry), (First-class Honors), Mahidol University • Advanced Senior Executive Program, Sasin & Kellogg School of Management, 2008 • Director’s Legal Liabilities, Ethical Leadership for new Era and High Performing Board & Board Effectiveness 2021 (In-house Programs by GC) Director Certification Program (DCP) Class 152/2011, Thai Institute of Directors Association (IOD) Board member/Management in Listed Company – The Stock Exchange of Thailand : 1 • Executive Vice President - Sustainability, PTT Global Chemical Public Company Limited Board member/Management in Non-Listed Company – The Stock Exchange of Thailand : 4 • Director, GC Ventures Company Limited • Director, GC Ventures America Corporation • Director, Sarn Palung Social Enterprise Company Limited • Director, Emery Oleochemicals UK Limited Work Experiences (5-years past experiences) 1 Oct 2019 - 31 Jan 2022 Senior Vice President - Sustainability and Corporate Branding, PTT Global Chemical Public Company Limited 22 Oct 2020 - 1 Nov 2021 Director, Emery Oleochemicals (M) Sdn. Bhd. 22 Oct 2020 - 1 Nov 2021 Director, Emery Specialty Chemicals Sdn. Bhd. 23 May 2018 - 30 Oct 2019 Managing Director, GC Ventures Company Limited 2016 - 2019 Director, PTTGC Innovation America Corporation 27 Jan 2016 - 30 Sep 2019 Director, Solution Creation Company Limited 1 Nov 2015 - 30 Sep 2019 Senior Vice President - Science and Innovation, PTT Global Chemical Public Company Limited 2013 - 2019 Chairman, Auria BioChemicals Company Limited Shareholding : None Relation among Family with other Directors, Management, Major Shareholders of the Company or Subsidiaries : Spouse : Mrs. Rattiya Chandavasu, Senior Vice President - Specialty Business Mr. Pukpong Wungrattanasopon Executive Vice President - Olefins Age : 51 Appointed : April 1st, 2020 Education/Training • Master of Science (Petrochemical Technology), The Petroleum and Petrochemical College, Chulalongkorn University • Bachelor of Science (Chemical Technology), Chulalongkorn University • Director’s Legal Liabilities, Ethical Leadership for new Era and High Performing Board & Board Effectiveness 2021 (In-house Programs by GC) Director Certification Program (DCP) Class 236/2017, Thai Institute of Directors Association (IOD) Board member/Management in Listed Company – The Stock Exchange of Thailand : 1 • Executive Vice President - Olefins, PTT Global Chemical Public Company Limited Board member/Management in Non-Listed Company – The Stock Exchange of Thailand : 4 • Director, HMC Polymers Company Limited • Director, PTT Phenol Company Limited • Director and Executive Committee Member, Thai Tank Terminal Limited • Director, GC Glycol Company Limited Work Experiences (5-years past experiences) 1 Oct 2019 - 30 Mar 2020 Acting Executive Vice President – Group Performance Center – Olefins, PTT Global Chemical Public Company Limited 1 Aug 2016 - 30 Sep 2019 Senior Vice President - Group Performance Center, Aromatics, PTT Global Chemical Public Company Limited Shareholding : None Relation among Family with other Directors, Management, Major Shareholders of the Company or Subsidiaries : None 366 PTT GLOBAL CHEMICAL PUBLIC COMPANY LIMITED Form 56-1 One Report 2021

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