Miss Siriwan Chierapong Age: 67 Years Appointed Positions: Independent Director/ Member of the Audit Committee Date of being an Independent Director 3 April 2019 Date of being the Member of the Audit Committee 4 April 2019 Years of being an Independent Director 2 Years 8 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 Accountancy, Chulalongkorn University • Master of Business Administration (M.B.A.), Thammasat University • Senior Executive Program (SEP), Class 16, Sasin Graduate Institute of Business Administration of Chulalongkorn University • NIDA-Wharton Executive Leaders Program, The Wharton School University of Pennsylvania • PTT Executive Leadership Program, General Electric, New York, USA • Advanced Certificate Course in Public Economics Management for Executives, Class 7/2008, King Prajadhipok’s Institute • The Role of the Board in IT Governance, Year 2020, Thai Institute of Directors Association (IOD) • Director Certificate Program (DCP) Class 102/2008, Thai Institute of Directors Association (IOD) Work Experience within the past 5 years 2014 - 2018 Advisor, PTT Polymer Marketing Company Limited 2013 - 2014 President, PTT Polymer Marketing Company Limited 2012 - 2013 Executive Vice President, Strategy and Portfolio Management, Corporate Strategy and Organization Development, PTT Public Company Limited 2009 - 2012 Executive Vice President, Business Development and Project Management, Petrochemicals and Refining Business Unit, PTT Public Company Limited 2005 - 2009 Executive Vice President, Subsidiary Planning and Management, Petrochemicals and Refining Business Unit, PTT Public Company Limited Current Position Board Member/ Management in Listed Company - The Stock Exchange of Thailand Apr. 2019 - Present Independent Director/ Member of the Audit Committee, IRPC Public Company Limited Board Member/Management in Non-Listed Company - The Stock Exchange of Thailand None Air Marshal Boonsuib Prasit Age: 68 Years Appointed Positions: Independent Director/ Chairman of the Corporate Governance Committee Date of being an Independent Director 3 April 2019 Date of being the Chairman of the Corporate Governance Committee 1 April 2021 Years of being an Independent Director 2 Years 8 Months Possession of IRPC shares (%) No. of share IRPC: - Share Possession: - % Family relationship within the Company, major shareholder or subsidiaries None Education/ Training • Armed Forces Academies Praparatory School, Class 13 • Royal Thai Air Force Academy, Class 20 • Master of Engineer (Aeronautical Engineering), Hochschule der Bundeswehr Muenchen, Germany • Squadron Officers, Class 56 • Air Command and Staff College, Class 33 • Air War College, Class 36 • Certificate in top Executives in the Energy Education Program, Class 8/2016, Thailand Energy academy (TEA) • Thailand’s 5th National Conference on Collective Action Against Corruption (Tackling Corruption through Public-Private Collaboration) • Seminar “Incorporation of State Investment Corporation” • The Role of the Board in IT Governance, Year 2020, Thai Institute of Directors Association (IOD) • Ethical Leadership Program (ELP) Class 7/2017, Thai Institute of Directors Association (IOD) • Director Accreditation Program (DAP), Class 117/2015, Thai Institute of Directors Association (IOD) • Role of the Nomination & Governance Committee Program (RNG), Class 7/2015, Thai Institute of Directors Association (IOD) Work Experience within the past 5 years Apr. 2019 - Mar. 2021 Independent Director/ Member of the Nomination and Remuneration Committee, IRPC Public Company Limited 2016 - 2018 Independent Director/ Chairman of the Nominating Committee, PTT Public Company Limited 2014 - 2016 Independent Director/ Member of the Nominating Committee, PTT Public Company Limited Current Position Board Member/ Management in Listed Company - The Stock Exchange of Thailand Apr. 2021 - Present Independent Director/ Chairman of the Corporate GovernanceCommittee, IRPCPublicCompany Limited Board Member/ Management in Non-Listed Company - The Stock Exchange of Thailand 2019 - Present Chairman, Spot Services Alliances Company Limited 34 IRPC PUBLIC COMPANY LIMITED 56-1 ONE REPORT 2021
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