Age: 55 Years Appointed: 1 January 2023 Mr. Pirun Krimwongrut Chief Operating Officer - Center of Excellence Education/Training Master of Engineering Science (Electrical Engineering), University of New South Wales, Sydney, Australia Bachelor of Engineering (Electrical Engineering), (Second-Class Honors), Khon Kaen University The Executive Program in Energy Literacy for a Sustainable Future, Class 18/2023, Thailand Energy Academy (TEA) Leadership Development Program (LDP 1), PTT Leadership and Learning Institute (PLLI), PTT Public Company Limited Role of the Chairman Program (RCP), Class 55/2023, Subsidiary Governance, Business and Legal Issues for Directors and Executives and Transformative Leadership for Global Enterprise, 2022, Director’s Legal Liabilities, Ethical Leadership for New Era and High Performing Board & Board Effectiveness, 2021 (In-house Programs by GC), and Director Certification Program (DCP), Class 257/2018, Thai Institute of Directors Association (IOD) Board Member/Management in Listed Company - The Stock Exchange of Thailand : 1 Chief Operating Officer - Center of Excellence, PTT Global Chemical Public Company Limited Board Member/Management in Non-Listed Company - The Stock Exchange of Thailand : 8 Chairman, NPC Safety and Environmental Service Company Limited Chairman, GC Maintenance and Engineering Company Limited Chairman, GC Estate Company Limited Director, GC America Sustainability Corporation Director, PTTGC America LLC Director, PTTGC America Corporation Director, GC International Corporation Director, PTT Asahi Chemical Company Limited Work Experiences (5-year Past Experiences) 23 Jan 2018 - 10 Jan 2023 Director, GC Estate Company Limited 28 Nov 2019 - 5 Jan 2023 Director, Sport Services Alliance Company Limited 11 Oct 2019 - 1 Jan 2023 Director, PTT Digital Solutions Company Limited 1 Oct 2020 - 31 Dec 2022 Executive Vice President - Organizational Effectiveness, PTT Global Chemical Public Company Limited Nov 2019 - Nov 2020 Director, GC Styrenics Company Limited 1 Oct 2019 - 30 Sep 2020 Acting Executive Vice President - Organizational Effectiveness, PTT Global Chemical Public Company Limited Mar 2018 - Dec 2019 Director, Thai Tank Terminal Limited Mar 2018 - Oct 2019 Director, Eastern Fluid Transport Company Limited Apr 2018 - Sep 2019 Senior Vice President - Group Performance Center - Utilities, PTT Global Chemical Public Company Limited Shareholding: 27,033 Shares (0.000600%) As of 31 December 2023 Relation among Family with other Directors, Management, Major Shareholders of the Company or Subsidiaries : None 377 PTT GLOBAL CHEMICAL PUBLIC COMPANY LIMITED Form 56-1 One Report 2023
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