IRPC One Report EN

Mrs. Nidcha Jirametthanakij Age: 59 Years Appointed Positions: Senior Executive Vice President, Corporate Accounting & Finance Date of being a Senior Executive Vice President, Corporate Accounting & Finance 1 October 2018 Years of being a Senior Executive Vice President, Corporate Accounting & Finance 3 Years 2 Months Possession of IRPC shares (%) No. of share IRPC: 250,000 Share Possession: 0.00122% Family relationship within the Company, major shareholder or subsidiaries None Education/ Training • Bachelor of Accounting (Accounting), Thammasat University • Master of Business Administration, Kasetsart University • Executive Development Program by Fiscal Policy Research Institute Foundation, Kingdom of Thailand in cooperation with Maxwell School of Syracuse University • Advanced Management Program (AMP) 2 - People Management • CFOs Orientation Course for New IPOs, The Stock Exchange of Thailand (SET) • The Role of the Board in IT Governance, Year 2020, Thai Institute of Directors Association (IOD) • Director Certification Program (DCP), Class 206/2015, Thai Institute of Directors Association (IOD) Work Experience within the past 5 years 2018 Executive Vice President, PTT Public Company Limited, Secondment to PTT Oil and Retail Business Company Limited 2016 - 2018 Vice President, Group Financial Planning, PTT Public Company Limited 2013 - 2016 Acting Managing Director, PTT Regional Treasury Center Pte. Ltd. Current Position Board Member/ Management in Listed Company - The Stock Exchange of Thailand Oct. 2018 - Present Senior Executive Vice President, Corporate Accounting & Finance, IRPC Public Company Limited Mar. 2018 - Present Executive Vice President, Corporate Finance & Accounting, PTT Public company Limited Board Member/ Management in Non-Listed Company - The Stock Exchange of Thailand Mar. 2021 - Present VISTEC Finance and Budget Sub-Committee, Vidyasirimedhi Institute of Science and Technology (VISTEC) Jul. 2020 - Present Director, Mytex Polymers (Thailand) Company Dec. 2018 - Present Director, IRPC A&L Company Limited Nov. 2018 - Present Director, iPolymer Company Limited Nov. 2018 - Present Director, IRPC Oil Company Limited Nov. 2018 - Present Director, IRPC Polyol Company Limited Nov. 2018 - Present Director, WHA Industrial Estate Rayong Company Limited Oct. 2018 - Present Director, UBE Chemicals (Asia) Public Company Limited Oct. 2018 - Present Director, IRPC Clean Power Company Limited 50 IRPC PUBLIC COMPANY LIMITED 56-1 ONE REPORT 2021

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