GC_ONE REPORT 2021_ENG

Mr. Saroj Putthammawong Executive Vice President - Marketing, Commercial and Supply Chain Age : 53 Appointed : October 1st, 2019 Education/Training • Master of Business Administration, Thammasat University • Bachelor of Engineering (Chemical Engineering), Chulalongkorn University • The Executive Program in Energy Literacy for a Sustainable Future, Class 11/2018, Thailand Energy Academy (TEA) • 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 220/2016, Thai Institute of Directors Association (IOD) Board member/Management in Listed Company – The Stock Exchange of Thailand : 1 • Executive Vice President - Marketing, Commercial and Supply Chain, PTT Global Chemical Public Company Limited Board member/Management in Non-Listed Company – The Stock Exchange of Thailand : 6 • Director, PTT Phenol Company Limited • Director, GC Treasury Center Company Limited • Director, GC Oxirane Company Limited • Director, GC Glycol Company Limited • Director, GC Marketing Solutions Company Limited • Director and Executive Committee Member, HMC Polymers Company Limited Position in Other Organizations/Institutions : 1 • Committee Member of Industry Standards (ISC), The Federation of Thai Industries Work Experiences (5-years past experiences) 27 Jun 2018 - 2020 Committee Member of Industrial Excellence Center (IEC), The Federation of Thai Industries Oct 2015 - Sep 2019 Senior Vice President - Marketing, Commercial and Supply, PTT Global Chemical Public Company Limited 2017 - 2019 Director, GC Logistics Solutions Company Limited 18 Nov 2015 - 8 Apr 2018 Director, Solution Creation Company Limited 21 Dec 2015 - 2 Mar 2018Director, Thai Tank Terminal Limited Shareholding : 4,900 Shares (0.000109%) As of 31 December, 2021 Relation among Family with other Directors, Management, Major Shareholders of the Company or Subsidiaries : None Mrs. Warawan Tippawanich Executive Vice President - Corporate Strategy Age : 58 Appointed : October 1st, 2019 Education/Training • Master of Business Administration, Chulalongkorn University • Bachelor of Science (Chemical Engineering), Chulalongkorn University • Leadership Development Program (LDP 2) and (LDP 3), PTT Leadership and Learning Institute • Director’s Legal Liabilities, Ethical Leadership for new Era and High Performing Board & Board Effectiveness 2021 (In-house Programs by GC) Board Matters and Trends (BMT) Class 2/2017 Company Secretary Program (CSP) Class 57/2014 Board Reporting Program (BRP) Class 15/2014 Company Reporting Program (CRP) Class 10/2014 Director Certification Program (DCP) Class 190/2014, Thai Institute of Directors Association (IOD) Board member/Management in Listed Company – The Stock Exchange of Thailand : 2 • Executive Vice President – Corporate Strategy, PTT Global Chemical Public Company Limited • Director, Vinythai Public Company Limited Board member/Management in Non-Listed Company – The Stock Exchange of Thailand : 7 • Director, Solution Creation Company Limited • Director, GC Polyols Company Limited • Director, GC Ventures Company Limited • Director, GC Ventures America Corporation • Director, PTTGC America Corporation • Director, PTTGC America LLC • Director, PTTGC International Private Limited Work Experiences (5-years past experiences) 1 Sep 2019 - 31 Jan 2022 Director, GC International Corporation 24 Dec 2019 - Nov 2020 Director, GC-M PTA Company Limited 24 Dec 2019 - Nov 2020 Director, Thai PET Resin Company Limited Sep 2017 - 14 Sep 2019 Director, Sarn Palung Social Enterprise Company Limited Jan 2015 - 11 Nov 2019 Director, GC Glycol Company Limited 1 Jan 2015 - 30 Sep 2019 Senior Vice President - Corporate Affairs and Corporate Secretary, PTT Global Chemical Public Company Limited Shareholding : Spouse 25,000 Shares (0.000554%), As of 31 December, 2021 Relation among Family with other Directors, Management, Major Shareholders of the Company or Subsidiaries : None 364 PTT GLOBAL CHEMICAL PUBLIC COMPANY LIMITED Form 56-1 One Report 2021

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