ATTACHMENT 3 DETAILS OF THE HEADS OF THE INTERNAL AUDIT AND COMPLIANCE UNITS Name - Surname : Mr. Amorn Putiphrawan Senior Vice President – Internal Audit Age : 58 Appointed : January 1st, 2018 Education/Training : Master of Engineering (Chemical Engineering), Chulalongkorn University : Bachelor of Science (Fuel Technology), Chulalongkorn University : Leadership Development Program (LDP 1) and (LDP 2), PTT Leadership and Learning Institute : Director’s Legal Liabilities, Ethical Leadership for new Era and High Performing Board & Board Effectiveness 2021 (In-house Programs by GC), Thai Institute of Directors Association (IOD) Board member/Management in Listed Company – The Stock Exchange of Thailand : 1 : Senior Vice President - Internal Audit, PTT Global Chemical Public Company Limited Board member/Management in Non-Listed Company – The Stock Exchange of Thailand : None Work Experiences (5 years past experiences) 1 Oct 2017 – 31 Dec 2017 Vice President reporting to Chief Executive Officer and President, PTT Global Chemical Public Company Limited 16 Jun 2014 – 30 Sep 2017 Vice President - Corporate Risk Management and Internal Control System, PTT Global Chemical Public Company Limited Shareholding : None Relation among Family with other Directors, Management, Major Shareholders of the Company or Subsidiaries : None HEAD OF INTERNAL AUDIT and HEAD OF CORPORATE COMPLIANCE (1) HEAD OF INTERNAL AUDIT The Audit Committee Meeting No. 8/2017 convened on September 18, 2017 resolved to approve the appointment of Mr. Amorn Putiphrawan as Senior Vice President, Internal Audit, responsible for evaluating and enhancing the internal control effectiveness, supervising the operations of the internal audit function to be in accordance with the objectives and the international standards, including objectivity and independent consulting on the company’s subsidiaries and report directly to the Audit Committee 380 PTT GLOBAL CHEMICAL PUBLIC COMPANY LIMITED Form 56-1 One Report 2021
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