Mr. Lersak Thongruang Age: 57 Years Appointed Positions Acting Senior Executive Vice President, Operation Date of being an Acting Senior Executive Vice President, Operation 1 January 2024 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 Engineering, Chemical Engineering, Prince of Songkhla University • Master of Public and Private Management, NIDA • Leadership Development Program II, Class 2, PTT Leadership and Learning Institute (PLLI) • Subsidiary Governance Program (SGP), Class 5/2023, Thai Institute of Directors Association (IOD) Work experience within the past 5 years Jul. 2023 - Dec. 2023 Senior Project Director, Ultra Clean Fuel (UCF), IRPC Public Company Limited Jan. 2023 - Jun. 2023 Acting Senior Project Director, Ultra Clean Fuel (UCF), IRPC Public Company Limited Jan. 2022 - Dec. 2022 Acting Executive Vice President, Refinery, IRPC Public Company Limited Jan. 2021 - Dec. 2021 Project Director, Ultra Clean Fuel (UCF), IRPC Public Company Limited Sep. 2018 - Dec. 2020 Operation Department Manager, IRPC Public Company Limited. Oct. 2014 - Aug. 2018 RDCC Department Manager, IRPC Public Company Limited. May 2012 - Sep. 2014 Expert of Petrochemical and Petroleum Group, IRPC Public Company Limited. Current Position Board member/Management in Listed Company - The Stock Exchange of Thailand Jan. 2024 - Present Acting Senior Executive Vice President, Operation, IRPC Public Company Limited Board member/Management in Non-Listed Company - The Stock Exchange of Thailand Jan. 2024 - Present Director, IRPC A&L Company Limited Jan. 2024 - Present Director, IRPC Polyol Company Limited Jan. 2024 - Present Director, IRPC Clean Power Company Limited Jan. 2024 - Present Director, WHA Industrial Estate Rayong Company Limited Jan. 2024 - Present Director, UBE Chemicals (Asia) Mr. Sirapong Visessuvan Age: 48 Years Appointed Positions Senior Vice President, Office of Corporate Internal Audit and Secretary of Audit Committee Date of being a Senior Vice President, Office Of Corporate Internal Audit 1 August 2023 Date of being a Secretary of Audit Committee 1 February 2023 Possession of IRPC shares (%) No. of share “IRPC”: - Share Possession: - % Family relationship within the Company, major shareholder or subsidiaries None Education/Training • Bachelor of Science in Chemical Technology, Chulalongkorn University • Master of Science in Industrial Engineering, Texas Tech University, USA • Certificate of Certified Fraud Examiner (CFE), Association of Certified Fraud Examiners (ACFE), USA • Leadership Development Program 1, Class of 10/2023, PTT Leadership Learning Institute (PLLI) Work experience within the past 5 years Feb. 2023 - Jul. 2023 Acting Senior Vice President, Office of Corporate Internal Audit and Secretary of Audit Committee, IRPC Public Company Limited Jan. 2018 - Jan. 2023 Manager, Office of Corporate Internal Audit, PTT Public Company Limited Current Position Board member/Management in Listed Company - The Stock Exchange of Thailand Aug. 2023 - Present Senior 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 - 52 Management Team, IRPC Public Company Limited IRPC Public Company Limited
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