GC_ONE REPORT 2021_ENG

Mr. Paisarn Sarapee Senior Vice President - Phenol Business Unit Age : 58 Appointed : October 1st, 2019 Education/Training • Master of Business Administration, Graduate School of Commerce, Burapha University • Bachelor of Science (Industrial Chemistry), Chiang Mai University • Head of Company Program, INSEAD University • Senior Executive Program (SEP) 2005, 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) Financial Statements for Directors (FSD) Class 41/2020 and Director Certification Program (DCP) Class 286/2019, Thai Institute of Directors Association (IOD) Board member/Management in Listed Company – The Stock Exchange of Thailand : 1 • Senior Vice President – Phenol Business Unit, PTT Global Chemical Public Company Limited Board member/Management in Non-Listed Company – The Stock Exchange of Thailand : 1 • Director and Managing Director, PTT Phenol Company Limited Work Experiences (5-years past experiences) Jan 2015 - Sep 2019 Vice President - Phenol Operation Department, PTT Phenol Company Limited Shareholding : None Relation among Family with other Directors, Management, Major Shareholders of the Company or Subsidiaries : None Mr. Vitaya Pinmuangngarm Senior Vice President - EO-Based Performance Business Unit Age : 59 Appointed : January 1st, 2021 Education/Training • Master of Business Administration (M.B.A.) (Finance and International Business), Sasin Graduate Institution of Business Administration of Chulalongkorn University • Bachelor of Accounting, Thammasat University • 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 109/2008 Thai Institute of Directors Association (IOD) Board member/Management in Listed Company – The Stock Exchange of Thailand : 1 • Senior Vice President - EO-Based Performance Business Unit, PTT Global Chemical Public Company Limited Board member/Management in Non-Listed Company – The Stock Exchange of Thailand : 3 • Director, GC Styrenics Company Limited • Director, GC Oxirane Company Limited • Director and Managing Director, GC Glycol Company Limited Work Experiences (5-years past experiences) Jan 2018 - Dec 2020 Director and President, PTT Asahi Chemical Company Limited Sep 2016 - Dec 2017 Director and Managing Director, Thai Tank Terminal Limited Shareholding : 8,755 Shares; Spouse 10,000 Shares (0.000416%) As of December 31, 2021 Relation among Family with other Directors, Management, Major Shareholders of the Company or Subsidiaries : None 370 PTT GLOBAL CHEMICAL PUBLIC COMPANY LIMITED Form 56-1 One Report 2021

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