Asst. Prof. Dr. Chaiyaporn Puprasert Age: 53 Years Appointed Positions: Independent Director/ Member of the Corporate Governance Committee Date of being an Independent Director 31 March 2021 Date of being a Member of the Corporate Governance Committee 1 April 2021 Years of being a Director 9 Months Possession of IRPC shares (%) No. of share IRPC: - Share Possession: - % Family relationship within the Company, major shareholder or subsidiaries None Education/ Training • Bachelor of Engineering in Sanitary Engineering, Chulalongkorn University • Master of Engineering (Environmental Engineering), Chulalongkorn University • Ph.D in Environmental Engineering, Institute National de Science Applique’e de Toulouse (INSA-Toulouse), France • Certification in Top Executives in the Poom Palung Pandin Program, Class 5, Chulalongkorn University • Director Accreditation Program (DAP), Class 102/2013, Thai Institute of Directors Association (IOD) Work Experience within the past 5 years May 2016 - Apr. 2018 Assistant to the President for Student and Alumni Affairs, Chulalongkorn University Mar. 2013 - Feb. 2016 Independent Director/ Member of the Audit Committee, Daii Group Public Company Limited Apr. 2010 - May 2016 Head of Environmental Engineering Department, Faculty of Engineering, Chulalongkorn University Current Position Board Member/ Management in Listed Company - The Stock Exchange of Thailand Apr. 2021 - Present Member of the Corporate Governance Committee, IRPC Public Company Limited Mar. 2021 - Present Independent Director, IRPC Public Company Limited Board Member/ Management in Non-Listed Company - The Stock Exchange of Thailand Apr. 2021 - Present Director, Chulalongkorn University Alumni Association Oct. 2019 - Present Expert Member in Water Pollution Control Sub-Committee, Department of Pollution Control, Ministry of Natural Resources and Environment May 2018 - Present Vice President for Student Affairs, Chulalongkorn University Dec. 1995 - Present Assistant Professor, Department of Environmental Engineering, Faculty of Engineering, Chulalongkorn University Mr. Chansak Chuenchom Age: 54 Years Appointed Positions: Director/ Member of the Nomination and Remuneration Committee Date of being a Director 1 October 2021 Date of being aMember of the Nomination and Remuneration Committee 1 October 2021 Years of being a Director 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 of Engineering Program in Mechanical Engineering, Khon Kaen University • Master of Business Administration Program, Kasetsart University • Leadership Development Program, MDP III Business Management, MDP III People Management, Advanced Management Program (AMP) 3 - Business and People Management, PTT Leadership and Learning Institute • Leadership Develpoment Program II (LDP II), China • Director Certification Program (DCP), Class 211/2015, Thai Institute of Directors Association (IOD) Work Experience within the past 5 years Apr. 2019 - Nov. 2021 Director, Energy Complex Company Limited Oct. 2015 - Sep. 2021 Executive Vice President, Engineering and Project Management, PTT Public company Limited Aug. 2014 - Sep. 2015 Vice President, Project Engineering Department, PTT Public company Limited Current Position Board Member/ Management in Listed Company - The Stock Exchange of Thailand Oct. 2021 - Present Director/ Member of the Nomination and Remuneration Committee, IRPC Public Company Limited Oct. 2021 - Present Senior Executive Vice President, Engineering and Infrastructure, PTT Public company Limited Board Member/ Management in Non-Listed Company - The Stock Exchange of Thailand Nov. 2021 - Present Chairman, Energy Complex Company Limited 40 IRPC PUBLIC COMPANY LIMITED 56-1 ONE REPORT 2021
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