IRPC One Report EN

Mr. Prasitsak Swasduang Age: 59 Years Appointed Positions: Vice President, Office Of Corporate Internal Audit and Secretary of Audit Committee Date of being a Vice President, Office Of Corporate Internal Audit 1 January 2021 Date of being a Secretary of Audit Committee 1 January 2021 Possession of IRPC shares (%) No. of share IRPC: 70,000 Share Possession: 0.00034% Family relationship within the Company, major shareholder or subsidiaries None Education/ Training • Bachelor of Science in Chemistry, Chiang Mai University • MINI MBA - Thammasat University • Finance for Non-financial Executive - Thammasat University • IT audit for Non-IT Auditor Masterclass by NSTDA Work Experience within the past 5 years Jan. 2017 - Dec. 2020 Division Manager of Strategy Information System Internal Audit Division, IRPC Public Company Limited Jan. 2007 - Dec. 2019 Division Manager of Operation, QSHE & Subsidiary Companies Internal Audit Division, IRPC Public Company Limited Current Position Board Member/ Management in Listed Company - The Stock Exchange of Thailand Jan. 2021 - Present Vice President, Office of Corporate Internal Audit and Secretary of Audit Committee, IRPC Public Company Limited Board Member/ Management in Non-Listed Company - The Stock Exchange of Thailand None Mr. Surachai Toaphicharttrakul Age: 55 Years Appointed Positions: Vice President, Corporate Accounting Possession of IRPC shares (%) No. of share IRPC: 14,719 Share Possession: 0.00007% Family relationship within the Company, major shareholder or subsidiaries None Education/ Training • Bachelor of Business Administration (Accounting), Ramkhamhaeng University • Master of Business Administration (Accounting for Planning and Control), Kasetsart University • Mini MBA - Faculty of Commerce and Accountancy, Thammasat University • Advanced Management Program (AMP) 2 - People Management • Lead Management Program - McKinsey Academy • Digital Leadership Acceleration Program - BCG Work Experience within the past 5 years 2013 - 2021 Vice President - Accounting, IRPC Public Company Limited 1997 - 2013 Department Manager - Financial Statement and Accounting Policy, IRPC Public Company Limited Current Position Board Member/ Management in Listed Company - The Stock Exchange of Thailand 2022 - Present Vice President - Corporate Accounting, IRPC Public Company Limited Board Member/ Management in Non-Listed Company - The Stock Exchange of Thailand 2017 - Present Director, IRPC Technology Company Limited 2017 - Present Director, Rakpasak Company Limited 53 Management Team IRPC PUBLIC COMPANY LIMITED

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