IRPC Annual Report 2023

Mr. Phichin Aphiwantanaporn Age: 58 Years Appointed Positions Senior Executive Vice President, Corporate Accounting & Finance Date of being a Senior Executive Vice President, Corporate Accounting & Finance Starting Date 1 October 2022 Years of being a Senior Executive Vice President, Corporate Accounting & Finance Starting Date 1 Year 3 Months Possession of IRPC shares (%) No. of share “IRPC”: - Share Possession: - % Family relationship within the Company, major shareholder or subsidiaries None Education/Training • Bachelor in Economics, Thammasat University • Master of Business Administration (MBA.), Indiana University, Indiana, USA • Capital Market Academy Leader Program (CMA), Class 32/2022, Capital Market Academy • Advanced Management Program (AMP) 3 - Business & People Management 2022, PTT Leadership and Learning Institute (PLLI) joint with DDI • Senior Public Finance Executive Program, Class 7/2020, Institute for Personal Development in Finance and Public Sector Accounting, The Comptroller General’s Department • Leadership Development Program III, Class 4/2019, PTT Leadership and Learning Institute (PLLI) joint with IMD • Management Development Program III, 2016, PTT Leadership and Learning Institute (PLLI) • Executive Development Program (EDP), 2015, Thai Listed Companies Association (TLCA) • Leadership Development Program I, Class 1/ 2013, PTT Leadership and Learning Institute (PLLI) joint with Harvard Business School • Director Certification Program (DCP), Class 321/2022, Thai Institute of Directors Association (IOD) Continuing Professional Development in Accounting 2022: Curriculum: Update on financial standards TFRS for NPAEs revised (effective January 1, 2023) Academy: Dharmniti Number of hours: 6 hours 2023: CFO Conference 2023 Academy: Federation of Accounting Profession Under The Royal Patronage of His Majesty The King Number of hours: 3 hours 2023: CFO Refresher Course 2023 Academy: The Stock Exchange of Thailand Number of hours: 6 hours Work experience within the past 5 years Jan. 2022 - Sep. 2022 Chairman, PTT Retail Business Management Company Limited Jan. 2022 - Sep. 2022 Director, Pertroasia (Thailand) Company Limited 2018 - Sep. 2022 Senior Executive Vice President, Finance, PTT Oil and Retail Business Public Company Limited 2018 - 2018 Vice President - Group Financial Planning (acting), PTT Public Company Limited 2013 - 2018 Vice President - Investor Relations Department, PTT Public Company Limited Current Position Board member/Management in Listed Company - The Stock Exchange of Thailand Oct. 2022 - Present Senior Executive Vice President, Corporate Accounting & Finance, IRPC Public Company Limited Oct. 2018 - Present Executive Vice President, Corporate Finance & Accounting, PTT Public Company Limited Board member/Management in Non-Listed Company - The Stock Exchange of Thailand Oct. 2022 - Present Director, IRPC A&L Company Limited Oct. 2022 - Present Director, UBE Chemicals (Asia) Public Company Limited Oct. 2022 - Present Director, WHA Industrial Estate Rayong Company Limited Oct. 2022 - Present Director, Mytex Polymers (Thailand) Company Oct. 2022 - Present Director, IRPC Clean Power Company Oct. 2022 - Present Director, IRPC Polyol Company Limited 49 Management Team, IRPC Public Company Limited 56-1 ONE REPORT 2023

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