GC One Report 2023 [EN]

Profile of The Person Supervising Accounting (Chief Accountant) PTT Global Chemical Public Company Limited Age: 51 Years Appointed: 1 January 2023 Age: 54 Years Appointed: 1 August 2023 Miss Duanthip Wuttichartkreingkrai Mrs. Ratana Warinpramote Acting Vice President – Financial Accounting 1 Acting Vice President – Financial Accounting 1 Education/Training Bachelor of Accounting, Thammasat University Accountants in the Digital 4.0 Era and Financial Information Technology, 2019 Thai Financial Reporting Standards Workshop for GC Group, 2019 Taxes from International Payments and the Double Taxation Treaty, 2019 Highlighted Principles and Issues of Group’s Investment Reporting, 2019 Fintech: Disruptive & Innovation, 2019 Thai Financial Reporting Standards Workshop, 2020 Accounting Adjustment and Period Ended Closing in Accordance with TFRS, 2020 Thai Financial Reporting Standards Workshop, 2021 Financial statement Analysis, 2021 Accounting Information System 1, 2022 TFRS update, 2022 CFO in Practice Certification Program Class 11/2023 Board Member/Management in Listed Company – The Stock Exchange of Thailand : 1 Vice President, Accounting Policy and Tax Strategy and Acting Vice President, Financial Accounting I, Finance and Accounting, PTT Global Chemical Public Company Limited Board Member/Management in Non-Listed CompanyThe Stock Exchange of Thailand : None Work Experiences (5-year Previous Experiences) 1 Oct 2019 - 31 Dec 2022 Vice President - Financial Accounting II, Finance and Accounting, PTT Global Chemical Public Company Limited 1 May 2019 - 30 Sep 2019 Acting Vice President - Financial Accounting II, Finance and Accounting, PTT Global Chemical Public Company Limited 1 Oct 2018 - 30 Apr 2019 Acting Vice President - Financial Accounting I, Finance and Accounting, PTT Global Chemical Public Company Limited 1 Nov 2015 - 30 Sep 2018 Division Manager - General Accounting and Consolidation Financial Accounting I, Finance and Accounting, PTT Global Chemical Public Company Limited Shareholding : None Relation among Family with Other Directors, Management, Major Shareholders of the Company or Subsidiaries : None Education/Training Master of Business Administration, Kasetsart University Bachelor of Accounting, University of the Thai Chamber of Commerce Navigating AI Governance and ESG Reporting for the Future Embracing the ISSB Standard Connecting Sustainability and Financial Reporting CFO Conference 2023: Embracing Changes & Unveiling the Path to Business Resilience and Success Anti-corruption for Executive Program: Fraud Risk Management in Practice Decarbonization Standards & Governance Carbon Credit & Market Mechanism Financial Reporting Standards Training for PTTGC Group, 2023 Board Member/Management in Listed Company – The Stock Exchange of Thailand : 1 Acting Vice President, Financial Accounting I, Finance and Accounting, PTT Global Chemical Public Company Limited Board Member/Management in Non-Listed CompanyThe Stock Exchange of Thailand : None Work Experiences (5-year Past Experiences) 1 Nov 2014 - 31 Jul 2023 Division Manager - Tax Management Financial Accounting I, Finance and Accounting, PTT Global Chemical Public Company Limited 19 Oct 2011 - 31 Oct 2014 Division Manager - Consolidation Financial Statements Financial Accounting I, Finance and Accounting, PTT Global Chemical Public Company Limited Shareholding: None Relation among Family with other Directors, Management, Major Shareholders of the Company or Subsidiaries : None 393 PTT GLOBAL CHEMICAL PUBLIC COMPANY LIMITED Form 56-1 One Report 2023

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