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Mr. Kan Trakulhoon
Chairman & Independent Director
Position
  • Chairman of Board of Directors
  • Independent Director
  • Chairman of Nomination and Compensation Committee
  • Chairman of Sustainable Development Committee
Share Ratio (%) * None
Relationship with Management None
Highest Education
  • Honorary Degrees of Engineering Chulalongkorn University
  • Honorary Degrees of Manufacturing Engineering Mahasarakham University
Director training
  • Director Certification Program (DCP 29/2003)
No.of other listed company to serve as director
  • 4 companies
Working Experiences
2016 - Present
Chairman of the Board of Directors, Chairman of the Leadership Development and Compensation Committee
Advanced Info Service Plc.
2015 - Present
Independent Director
Advanced Info Service Plc.
2015 - 2017
Chairman of Sustainable Development Committee
Advanced Info Service Plc.
2017 - 31 Mar 2025
Independent Director, Chairman of the Leadership Development and Compensation Committee, Member of the Nomination and Governance Committee, Member of the Strategic and Organizational Review Committee and Member of the CSR Committee for Sustainable Development
Intouch Holdings Plc.
Independent Director
Bangkok Dusit Medical Services Plc.
2016 - Present
Independent Director, Chairman of the Nomination, Compensation and Corporate Governance Committee, Member of the Executive Committee
Siam Commercial Bank Plc.
2006 - 2023
Director
The Siam Cement Plc.
2020 - Present
Director
SCB 10X Co., Ltd
Director
Council of Experts of the National Higher Education, Science, Research and Innovation Policy Council
Expert Member
State Enterprise Policy Committee
2018 - Present
Expert Member
Eastern Economic Corridor Policy Committee
Expert Member
Investment and Coordination Committee
2011 - 2019
Consultant
Kubota Corporation (Japan)
Illegal Record in past 10 years None
Mr. Somchai Lertsutiwong
Director
Position
  • Executive Director
  • Member of Sustainable Development Committee
  • Member of Executive Committee
  • Chief Executive Officer
Share Ratio (%) * 0.0004
Relationship with Management None
Highest Education
  • Master of Business Administration, Chulalongkorn University
Director training
  • Director Certification Program (DCP 107/2009)
No.of other listed company to serve as director
  • -
Working Experiences
April 2024 - Present
Independent Director
PTT Oil and Retail Business PCL
April 2024 - Present
Member of the Corporate Governance and Sustainability Committee
PTT Oil and Retail Business PCL
2020 - Present
Acting Chief Corporate Officer
Advanced Info Service Plc.
2014 - Present
Executive Director, Member of Sustainable Development Committee Member of Executive Committee, Chief Executive Officer, and Authorized Director
Advanced Info Service Plc.
2012 - 2014
Director, Chief Marketing Officer
Advanced Info Service Plc.
2007 - 2012
Executive Vice President - Marketing
Advanced Info Service Plc.
2004 - 2007
Senior Vice President - Wireless Communication
Advanced Info Service Plc.
Illegal Record in past 10 years None
Ms.Yupapin Wangviwat
Director
Position
  • Non-executive director
  • Member of Sustainable Development Committee
  • Member of Executive Committee
Share Ratio (%) * None
Relationship with Management None
Highest Education
  • Master of Business Administration, University of Florida, USA
Director training
  • DCP: Director Certification Program Class 164/2012
  • Capital Market Leadership Program (Class 16), Capital Market Academy
  • Top Executive Program in Commerce and Trade (Class 13), Commerce Academy, University of the Thai Chamber of Commerce
  • Executive Management with Business Development and Investment (Class 4), Institute of Business and Industrial Development
  • Digital Transformation for CEO (Class 1), Nation Multimedia Group Plc.
  • ABC Course, Class 5, Academy of Business Creativity, Sripatum University
No.of other listed company to serve as director
  • 2 companies
Working Experiences
2021 - Present
Non-Executive Director
Advanced Info Service Plc.
Member of the Executive Committee
Advanced Info Service Plc.
Member of the Sustainable Development Committee
Advanced Info Service Plc.
Director
GULF1 Co.,Ltd.
2021 - 2022
Director
Intouch Holdings Plc
2020 - 31 Mar 2025
Member of the Sustainability, Governance and Risk Management Committee
Gulf Energy Development Plc
1 Apr. 2025 - Present
Director, Member of the Sustainability, Governance and Risk Management Committee, Deputy Chief Executive Officer and Chief Financial Officer
Gulf Development Plc
2019 - Present
Director
Rachakarn Asset Management Co.,Ltd.
2018 - Present
Director and Executive Director
Gulf Energy Development Plc
Director
Gulf Renewable Energy Co., Ltd.
2008 - Present
Senior Executive Vice President
Gulf JP Co.,Ltd.
1997 - Present
Chief Financial Officer
Gulf Electric Plc.
2020 - 2021
Director
Gulf JP Company Limited
Director
Gulf SRC Company Limited
Director
Gulf PD Company Limited
Director
Gulf Energy Mauritius Company Limited
2019 - 2021
Director
Independent Power Development Company Limited
2015 - 2021
Director
Gulf JP KP1 Company Limited
Director
Gulf JP KP2 Company Limited
Director
Gulf JP TLC Company Limited
Director
Gulf JP NNK Company Limited
Director
Gulf JP NLL Company Limited
Director
Gulf JP CRN Company Limited
Director
Gulf JP NK2 Company Limited
2014 - 2021
Director
Gulf Solar BV Company Limited
Director
Gulf Solar TS1 Company Limited
Director
Gulf Solar TS2 Company Limited
Director
Gulf Solar KKS Company Limited
Director
Gulf International Investment (Hong Kong) Limited
2013 - 2021
Director
Gulf MP Company Limited
Director
Gulf Solar Company Limited
Director
Gulf JP NS Company Limited
Director
Gulf JP UT Company Limited
2012 - 2021
Director
Gulf VTP Company Limited
Director
Gulf TS1 Company Limited
Director
Gulf TS2 Company Limited
Director
Gulf TS3 Company Limited
Director
Gulf TS4 Company Limited
Director
Gulf NC Company Limited
Director
Gulf BL Company Limited
Director
Gulf BP Company Limited
Director
Gulf NLL2 Company Limited
Director
Gulf NPM Company Limited
Director
Gulf NRV1 Company Limited
Director
Gulf NRV2 Company Limited
2011 - 2021
Director
Kolpos Pte. Ltd.
2019 - 2020
Director
Bangkok Smart Energy Company Limited
2017 - 2020
Director
Gulf WHA MT Natural Gas Distribution Company Limited
Director
WHA Eastern Seaboard NGD2 Company Limited
Director
WHA Eastern Seaboard NGD4 Company Limited
2015 - 2020
Director
Gulf Cogeneration Company Limited
Director
Samutprakarn Cogeneration Company Limited
Director
Nong Khae Cogeneration Company Limited
Director
Gulf Yala Green Company Limited
Director
Gulf Power Generation Company Limited
Director
Gulf IPP Company Limited
Director
Gulf Energy Company Limited
2014 - 2021
Director
Gulf International Holding Pte. Ltd.
2017 - 2019
Senior Executive Vice President and Chief Corporate Officer
Gulf Energy Development Plc.
2014 - 2017
Senior Executive Vice President and Chief Financial Officer
Gulf Energy Development Company Limited
Illegal Record in past 10 years None
Mr.Arthur Lang Tao Yih
Director
Position
  • Non-executive director
  • Member of Sustainable Development Committee
  • Member of Executive Committee
Share Ratio (%) * None
Relationship with Management None
Highest Education
  • Master of Business Administration, Harvard Business School
Director training None
No.of other listed company to serve as director 1 Company
Working Experiences
2021 - Present
Non-Executive Director
Advanced Info Service Plc.
Member of Sustainable Development Committee
Advanced Info Service Plc.
Member of Executive Committee
Advanced Info Service Plc.
Authorized Director
Advanced Info Service Plc.
Group Chief Financial Officer
Singapore Telecommunications Limited
2017 - 2021
Chief Executive Officer, International
Singapore Telecommunications Limited
2011 - 2016
Group Chief Financial Officer
CapitaLand Limited
Illegal Record in past 10 years None

Charter of Sustainable Development Committee

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