GC_ONE REPORT 2021_ENG

Mr. Ratchada Sawasdirak Senior Vice President - Refinery Age : 53 Appointed : October 1st, 2019 Education/Training • Master of Public Administration, Chulalongkorn University • Bachelor of Engineering (Mechanical Engineering), Mahanakorn University of Technology • Ethical Leadership 2020 : Ethical Challenges in New Normal, PTT Global Chemical Public Company Limited • 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 287/2019, Thai Institute of Directors Association (IOD) Board member/Management in Listed Company – The Stock Exchange of Thailand : 1 • Senior Vice President - Refinery, PTT Global Chemical Public Company Limited Board member/Management in Non-Listed Company – The Stock Exchange of Thailand : 1 • Director, Thai Tank Terminal Limited Work Experiences (5-years past experiences) 2008 - Sep 2019 Vice President - Refinery, PTT Global Chemical Public Company Limited Shareholding : 21,500 Shares (0.000477%) As of 31 December, 2021 Relation among Family with other Directors, Management, Major Shareholders of the Company or Subsidiaries : None Mrs. Pilasphan Udomjarumanee Senior Vice President - Corporate Secretary and Legal and Company Secretary Age : 56 Appointed : October 1st, 2019 Education/Training • Master Degree of Business Administration (Finance), Royal Melbourne Institute of Technology, Melbourne, Australia • Post Graduate Diploma Degree in Business Administration, Victoria University, Melbourne, Australia • Bachelor of Arts (English), Silpakorn University • Leadership Development Program (LDP) 2 PLLI, INSEAD • Supply Chain and Supply Sourcing, McKinsey • Strategy Management Program - 2018, Fiscal Policy Research Institute Foundation, Ministry of Finance • M&A Training for Senior Leadership - 2018, Institute for Merger, Acquisition & Alliance • Leadership Development Program (LDP) 2 - 2015, Sasin Graduate Institute of Business Administration of Chulalongkorn University • Director’s Legal Liabilities, Ethical Leadership for new Era and High Performing Board & Board Effectiveness 2021 (In-house Programs by GC) Company Secretary Refreshment Training Program (RFP) Class 4/2021 Board Reporting Program (BRP) Class 35/2020 Company Reporting Program (CRP) Class 26/2020 Company Secretary Program (CSP) Class 107/2020 Corporate Governance for Executives (CGE) Class 16/2020 Director Certification Program (DCP) Class 287/2019, Thai Institute of Directors Association (IOD) Board member/Management in Listed Company – The Stock Exchange of Thailand : 1 • Senior Vice President – Corporate Secretary and Legal and Company Secretary, PTT Global Chemical Public Company Limited Board member/Management in Non-Listed Company – The Stock Exchange of Thailand : None Position in Other Organizations/Institutions : 1 • Committee Member of Thai Company Secretary Club, Thai Listed Companies Association Work Experiences (5-years past experiences) 1 Sep 2016 - 30 Sep 2019 Vice President - Strategy and Planning Department, PTT Global Chemical Public Company Limited 1 Sep 2014 - 31 Aug 2016 Vice President - Portfolio and Subsidiary Department, PTT Global Chemical Public Company Limited Shareholding : 18,400 Shares (0.000408%) As of 31 December 2021 Relation among Family with other Directors, Management, Major Shareholders of the Company or Subsidiaries : None 368 PTT GLOBAL CHEMICAL PUBLIC COMPANY LIMITED Form 56-1 One Report 2021

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