GC_ONE REPORT 2021_ENG

Mr. Don Wasantapruek Independent Director (Non-executive Director) and Chairman of the Nomination and Remuneration Committee Age : 63 Years Appointed : November 1st, 2015, April 5th, 2016 (1st re-elected), April 5th, 2019 (2nd re-elected) Education/Training • Master of Engineering (Industrial Engineering), University of New South Wales, Sydney, Australia • Bachelor of Engineering (Industrial Engineering), University of New South Wales, Sydney, Australia • Seminar “Incorporation of State Investment Corporation” (July 13, 2015) • The Executive Program in Energy Literacy for a Sustainable Future, Class 6/2015, Thailand Energy Academy (TEA) • Thailand’s 5th National Conference on Collective Action Against Corruption Tackling Corruption through Public - Private Collaboration (October 16th, 2014) Director Training • Briefing on International Anti-Corruption International Cases and Practices (October 14, 2015), Seminar Anti-Corruption : Leadership Role of the Board in Driven the Organization toward the Draft of the Development of Corporate Governance and Enterprise Management Act And Good Corporate Governance, Director Accreditation Program (DAP) Class 117/2015 and Role of the Nomination and Governance Committee (RNG) Class 7/2015, Thai Institute of Directors Association (IOD) Board member/Management in Listed Company - The Stock Exchange of Thailand : 2 • Independent Director and Chairman of the Nomination and Remuneration Committee, PTT Global Chemical Public Company Limited • Independent Director and Chairman of the Nomination Committee, PTT Public Company Limited Board member/Management in Non-Listed Company - The Stock Exchange of Thailand : None Position in Other Organizations/Institutions : 1 • Self-employed Work Experiences (5-years Past Experiences) Apr 2018 - Nov 2019 Director to the Nomination and Remuneration Committee, PTT Global Chemical Public Company Limited 4 Feb 2014 - 23 Dec 2018 Member of the Corporate Governance Committee, PTT Public Company Limited Nov 2015 - Apr 2018 Director to the Corporate Governance Committee, PTT Global Chemical Public Company Limited Shareholding : Spouse 3,000 Shares (0.000067%) as of 31 December 2021 Relation among Family with other Directors, Management, Major Shareholders of the Company or Subsidiaries : None Professor Somkit Lertpaithoon Independent Director (Non-executive Director) and Chairman of the Corporate Governance and Sustainability Committee Age : 62 Years Appointed : April 9th, 2018, April 5th, 2021 (1st re-elected) Education/Training • Doctorate, (Droit Public Interne), The University Paris II, France • Degree of Profound Studies, (Droit Public Interne), The University Paris II, France • Bachelor of Law, Thammasat University • Barrister-at-Law, Institute of Legal Education Thai Bar Association • Certification in Local Government, Institut International d’ Administration Publique (IIAP), France • The Executive Program in Energy Literacy for a Sustainable Future, Class 10, Thailand Energy Academy (TEA) Director Training • Director Accreditation Program (DAP) Class 181/2021 and Corporate Governance for Executives (CGE) Class 17/2021, Thai Institute of Directors Association (IOD) Board member/Management in Listed Company - The Stock Exchange of Thailand : 2 • Director, Sky ICT Public Company Limited • Independent Director and Chairman of the Corporate Governance and Sustainability Committee, PTT Global Chemical Public Company Limited Board member/Management in Non-Listed Company - The Stock Exchange of Thailand : None Position in Other Organizations/Institutions : 7 • Independent Expert of Board Member, NSTDA Governing Board, National Science and Technology Development Agency (NSTDA) • Chairperson of the Commissioner, Higher Education Commission • Independent Expert of Board Member, Board of Governance, Thai Health Promotion Foundation (ThaiHealth) • Member, The National Law Reform Committee • Honorary Board Member, King Prajadhipok’s Institute • Member, 10th Council of State, Office of the Council of State • Professor of Faculty of Law, Thammasat University Work Experiences (5-years Past Experiences) Feb 2017 - Apr 2018 Independent Director and Member of the Enterprise Risk Management Committee, PTT Public Company Limited 2017 Director, The Government Pharmaceutical Organization 2010 - 2017 Rector, Thammasat University Shareholding : None Relation among Family with other Directors, Management, Major Shareholders of the Company or Subsidiaries : None 351 BUSINESS OPERATION AND PERFORMANCE CORPORATE GOVERNANCE FINANCIAL REPORTS AND FINANCIAL STATEMENTS APPENDIX

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