IRPC One Report EN

Miss Wanida Utaisomnapa Age: 55 Years Appointed Positions: Senior Executive Vice President, Corporate Commercial and Marketing Date of being a Senior Executive Vice President, Corporate Commercial and Marketing 1 January 2019 Years of being a Senior Executive Vice President, Corporate Commercial and Marketing 1 Year 11 Months Possession of IRPC shares (%) No. of share IRPC: 210,440 Share Possession: 0.00103% Family relationship within the Company, major shareholder or subsidiaries None Education/ Training • Bachelor of Business Administration (Finance with Second Class Honors), Bangkok University • Master of Business Administration (Finance and Marketing), National University, San Diego, USA • PLLI Leadership Development Program, IMD, Singapore • Advance Management Program, DDI • Leadership/ The 7 HABITS of Highly Effective People, PacRim/ FranklinCovey • PTT-HBS Leadership Development Program Class 1, Harvard Business School, India&China • Refinery Economics, Solomon Associates, Singapore • Advance Price Risk Management, Invincible Energy, Singapore • TheBoard’s Role in Strategic Formulation, GovernanceMatters Australia • The Role of the Board in IT Governance, Year 2020, Thai Institute of Directors Association (IOD) Work Experience within the past 5 years Apr. 2019 - Dec. 2021 Director, IRPC Polyol Company Limited Nov. 2018 - Mar. 2019 Director, IRPC Clean Power Company Limited Oct. 2018 - Dec. 2018 Executive Vice President, Strategic Transformationand Result Delivery Office, IRPC Public Company Limited Feb. 2016 - Dec. 2018 Secretary of the Risk Management Committee, IRPC Public Company Limited Jan. 2016 - Dec. 2018 Executive Vice President, Corporate Business Planning, IRPC Public Company Limited Current Position Board Member/ Management in Listed Company - The Stock Exchange of Thailand Jan. 2019 - Present Senior ExecutiveVicePresident, CorporateCommercial and Marketing, IRPC Public Company Limited Board Member/ Management in Non-Listed Company - The Stock Exchange of Thailand Jul. 2020 - Present Director, Mytex Polymers (Thailand) Company Jul. 2019 - Present Director, Guangzhou Saiju Performance Polymer Company Limited Mar. 2019 - Present Director, IRPC A&L Company Limited Jan. 2019 - Present Director, UBEChemicals (Asia) PublicCompany Limited Nov. 2018 - Present Director, IRPC Oil Company Limited Mr. Poramet Junwichit Age: 57 Years Appointed Positions: Senior Executive Vice President, Corporate Organization Effectiveness Date of being a Senior Executive Vice President, Corporate Organization Effectiveness 1 January 2022 Possession of IRPC shares (%) No. of share IRPC: 1 Share Possession: 0.00000% Family relationship within the Company, major shareholder or subsidiaries None Education/ Training • MINI MBA, Thammasat University • M.Ed. (Public Administration), National Institute of Development Administration • B.Eng. (Engineering), Kasetsart University • Leadership Development Program II • Inspiration and Capability Drive • IRPC Culture Transformation Leading Work Experience within the past 5 years Aug. 2020 - Dec. 2021 Executive Vice President, Engineering & Maintenance, IRPC Public Company Limited Feb. 2020 Acting Executive Vice President, Engineering & Maintenance, IRPC Public Company Limited Jan. 2018 Vice President, Maintenance Service 2 Department, IRPC Public Company Limited Oct. 2014 Vice President, Inspection and Reliability Department, IRPC Public Company Limited Jun. 2010 Vice President, Engineering Department, IRPC Public Company Limited Current Position Board Member/ Management in Listed Company - The Stock Exchange of Thailand Jan. 2022 - Present Senior Executive Vice President, Corporate Organization Effectiveness, IRPC Public Company Limited Board Member/ Management in Non-Listed Company - The Stock Exchange of Thailand Jan. 2022 - Present Director, IRPC Technology Company Limited 51 Management Team IRPC PUBLIC COMPANY LIMITED

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