GC_ONE REPORT 2021_ENG

Mrs. Chatsuda Kanjanarat Senior Vice President - Transformation Excellence Age : 53 Appointed : July 1st, 2017 Education/Training • Bachelor of Engineering (Electrical-Electronics) (Second-class Honors), King Mongkut’s Institute of Technology Ladkrabang • PTT-HBS Leadership Development Program (LDP 1) PTT Leadership and Learning Institute • Leading Digital Business Transformation (LDBT) 2017, Institute for Management Development (IMD) • Executive Education Certificate Program in Cybersecurity (Executive CISO) Class 1, National Cyber Security Agency (NCSA) • 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 249/2017, Thai Institute of Directors Association (IOD) Board member/Management in Listed Company – The Stock Exchange of Thailand : 1 • Senior Vice President - Transformation Excellence PTT Global Chemical Public Company Limited Board member/Management in Non-Listed Company – The Stock Exchange of Thailand : 1 • Director, PTT Digital Solutions Company Limited Work Experiences (5-years past experiences) 13 Jun 2016 - 30 Jun 2017 Vice President - PTTGC Business Performance Improvement - Project MAX, PTT Global Chemical Public Company Limited 1 Jan 2014 - 12 Jun 2016 Vice President - Strategy and Planning, PTT Global Chemical Public Company Limited Shareholding : None Relation among Family with other Directors, Management, Major Shareholders of the Company or Subsidiaries : None Mr. Paranai Waitayasewee Senior Vice President - Procurement Age : 58 Appointed : February 16th, 2021 Education/Training • Master of Public Administration (Political Science), Thammasat University • Bachelor of Engineering (Industrial Engineering), King Mongkut’s University of Technology Thonburi • Extraordinary Leader 2016 (Inhouse training by GC) • Leadership Development Strategy Engagement Centric Engagement Creating an innovation, Leadership Engagement & Change Engagement, Thammasat Business Consulting Center • Leadership Development Program (LDP 2 - 2015), 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) Thai Institute of Directors Association (IOD) Board member/Management in Listed Company – The Stock Exchange of Thailand : 1 • Senior Vice President - Procurement, PTT Global Chemical Public Company Limited Board member/Management in Non-Listed Company – The Stock Exchange of Thailand : 1 • Director, GC Estate Company Limited Work Experiences (5-years past experiences) 1 - 15 Feb 2021 Vice President - Procurement, PTT Global Chemical Public Company Limited Jun 2019 - Jan 2021 Vice President – Marketing, Commercial and Supply, PTT Phenol Company Limited Feb 2013 - May 2019 Vice President – Marketing, Commercial and Supply – EO-Based, PTT Global Chemical Public Company Limited Shareholding : 88,966 Shares (0.001973%), As of 31 December, 2021 Relation among Family with other Directors, Management, Major Shareholders of the Company or Subsidiaries : None 372 PTT GLOBAL CHEMICAL PUBLIC COMPANY LIMITED Form 56-1 One Report 2021

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