
Mr. Yokporn Tantisawetrat
Chairman of the Audit Committee
Mr. Yokporn Tantisawetrat
Age: 68
Chairman of the Audit Committee
Appointed Date: 21 August 2015
Independent Director
Appointed Date: 4 August 2015
Member of The Environment, Social and Governance (ESG) Committee
Appointed Date: 31 March 2023
% Share Held
Own share : 0.002
Spouse : –
Education/Training
• M.Econ., Thammasat University
• B.Econ., Chulalongkorn University
• Director Accreditation Program (DAP) #66/2007, IOD
• Director Certification Program (DCP) #229/2016, IOD
• Advanced Audit Committee Program (AACP) #25/2017, IOD
• IT Governance (ITG) #7/2018, IOD
• Advanced Bank Management Program, The Wharton School
• Advanced Management Program (AMP), Harvard Business School
• National Defence Program 2003, National Defence College
Work Experience in the Last Five Years
• 31 Mar 2023 – present : Member of The Environment, Social and Governance (ESG) Committee, Banpu Power Plc.
• 2017 – present : Independent Director, AP (Thailand) Public Company Limited
• 2015 – May 2021 : Director, TMB Bank Public Company Limited

Assoc. Prof. Dr. Naris Chaiyasoot
Member of the Audit Committee
Assoc. Prof. Dr. Naris Chaiyasoot
Age: 68
Member of the Audit Committee
Appointed Date: 21 August 2015
Independent Director
Appointed Date: 4 August 2015
Chairman of the Board of Directors
Appointed Date: 4 August 2015
Chairman of the Corporate Governance and Nomination Committee
Appointed Date: 21 August 2015
% Share Held
Own share : –
Spouse : –
Education/Training
• Ph.D. in Economics, University of Hawaii
• M.Econ. (English Program), Thammasat University
• B.Econ. (Hons), Thammasat University
• Advance Audit Committee Program (AACP) #29/2018, IOD
• Chartered Director Class (CDC) #3/2008, IOD
• Director Certification Program (DCP) #82/2006, IOD
• Director Accreditation Program (DAP) #32/2005, IOD
• Finance for Non-Finance Directors (FND) #19/2005, IOD
• Role of the Chairman Program #45/2019, IOD
• Health Ambassador #2/2019, Chulabhorn Royal Academy
Work Experience in the Last Five Years
• Apr 2021 – present : Chairman, United Palm Oil Industry Public Company Limited
• 2016 – present : Chairman, AP (Thailand) Plc.
• 2013 – present : Chairman of the Audit Committee/Independent Director/Member of the Nomination and Compensation, GMM Grammy Plc.
• 2012 – 2018 : Director/Chairman of the Audit Committee, Fortune Part Industry Plc.
• Present : Chairman, Travelex (Thailand) Co., Ltd.

Prof. Dr. Bundhit Eua-arporn
Member of the Audit Committee
Prof. Dr. Bundhit Eua-arporn
Age: 58
Member of the Audit Committee
Appointed Date: 21 August 2015
Independent Director
Appointed Date: 4 August 2015
Chairman of the Compensation Committee
Appointed Date: 21 August 2015
% Share Held
Own share : 0.003
Spouse : –
Education/Training
• Ph.D. in Engineering, Imperial College of Science Technology and Medicine, U.K.
• M.Eng., Chulalongkorn University
• B.Eng., Chulalongkorn University
• Director Certification Program (DCP) #110/2008, IOD
• Executive Program in Energy Literacy for a Sustainable Future Program #6/2015, Thailand Energy Academy
• Bhumipalung Phandin Program #3/2014
• Temasek Foundation-NUS Programme for Leadership in University Management 2012
Work Experience in the Last Five Years
• Nov 2021 - present : Chairman, Office of the Basic Education Commission (OBEC)
• Aug – Sep 2017 : Director, The National Energy Reform Committee, Thailand’s National Reform Council
• 2015 – 2016 : Expert Member of the Board of Directors, Thailand Institute of Scientific and Technological Research
• 2013 – 2016 : Dean, Faculty of Engineering, Chulalongkorn University

Prof. Dr. Patchanita Thamyongkit
Member of the Audit Committee
Prof. Dr. Patchanita Thamyongkit
46
Member of the Audit Committee
Appointed Date: 30 April 2021
Independent Director
Appointed Date: 2 April 2021
Chairman of The Environment, Social and Governance (ESG) Committee
Appointed Date: 31 March 2023
Member of the Corporate Governance and Nomination Committee
Appointed Date: 30 April 2021
% Share Held
Own share : -
Education/Training
• Dr.rer.nat (Ph.D.): Organic Chemistry, Eberhard-Karls-Universität Tübingen, Germany
• B.Sc.: Chemistry (major: Organic Chemistry), Chulalongkorn University
• Director Certification Program (DCP) #289, IOD
• Risk Management Program for Corporate Leaders (RLC)#23/2021, IOD
• Advanced Audit Committee Program (AACP) #40/2021, IOD
• The Diligent Climate Leadership Certification Program, Diligent APAC Board Services Pte. Ltd.
Work Experience in the Last Five Years
• 31 Mar 2023 – present : Chairman of The Environment, Social and Governance (ESG) Committee Banpu Power Plc.
• 2019 - present : Assistant to the President for Research and Innovation, Chulalongkorn University
• 2005 - present : Professor, Department of Chemistry Faculty of Science, Chulalongkorn University
• 2012 – 2014 / 2017 - 2019 : Associate Dean of Graduate School, Chulalongkorn University
• 2015 – 2017 : Vice-director of Scientific and Technological Research Equipment Centre, Chulalongkorn University