The Board of Directors at Meeting No. 1/2011, held on October 19, 2011, appointed four Sub-committees, namely the Audit Committee, the Nomination and Remuneration Committee, the Corporate Governance and Sustainability Committee, and the Risk Management Committee. Directors serving on these sub-committees possess the expertise and knowledge required to oversee specific issues that each is tasked with according to GC’s Articles of Association. The charter of each Sub-committee prescribes its members’ desired qualifications, terms in office, and scope of duties and responsibilities. The names of Sub-committee members, their duties and responsibilities, the number of their meetings and attendance in these meetings are detailed below. Serving a three-year term, Directors appointed to these Sub-committees are to perform their specific tasks with diligence and efficiency. All Sub-committees report their performance to the Board of Directors at Board meetings regularly as well as disclose their annual performance to shareholders in Form 56-1 One Report. The names and duties of each Sub-committee as of February 15, 2024, are listed below. Sub-committees Audit Committee Name Position Date of Appointment 1. Mr. Thanwa Laohasiriwong(1) Chairman of the Audit Committee (Independent Director) Nov 1, 2023 2. Mr. Pakorn Nilprapunt(2) Director to the Audit Committee (Independent Director) April 23, 2018 3. Lieutenant General Nimit Suwannarat(3) Director to the Audit Committee (Independent Director) Sep 25, 2023 Mr. Amorn Putiphrawan, Senior Vice President of Internal Audit, served as Secretary to the Audit Committee and retired on December 31, 2023. Mr. Chatchawalit Dhammasaroj was appointed Secretary to the Audit Committee to replace Mr. Amorn Putiphrawan, on January 1, 2024. Remarks: (1) Mr. Thanwa Laohasiriwong was appointed Director to the Audit Committee, replacing Mrs. Watanan Petersik, and served as Chairman of the Audit Committee in place of Mr. Pakorn Nilprapunt on November 1, 2023. Mr. Thanwa Laohasiriwong possesses sufficient knowledge and work experience in accounting and finance to review the credibility of financial statements. (2) Mr. Pakorn Nilprapunt was appointed Chairman of the Audit Committee, replacing Mr. Apisak Tantivorawong on September 25, 2023, and transitioned to the position of a Director to the Audit Committee on November 1, 2023. (3) Lieutenant General Nimit Suwannarat was appointed Director to the Audit Committee, replacing Mr. Apisak Tantivorawong on September 25, 2023. The Audit Committee shall be comprised of at least three but not more than five Independent Directors. Each term lasts three years or until the termination of directorship, resignation, or dismissal. Members of the Audit Committee who retire by rotation may be re-appointed by the Board of Directors. Independent Directors may serve no more than nine consecutive years in office from the date of appointment. They shall also have qualifications and perform all duties in accordance with the Notification of the Securities and Exchange Commission and the scope of work prescribed by the announcement of the Capital Market Supervisory Board. The Board of Directors has approved the Charter of the Audit Committee, which stipulates the composition, qualifications, terms of office, and scopes of duties according to good corporate governance principles. Details of the charter are disclosed in the Company’s Corporate Governance and Business Code of Conduct Handbook and on the Company website. The Audit Committee consists solely of Independent Directors, with at least one of whom being a recognized expert with experience in finance and accounting. The Board believes that the Directors can carry out their duties independently and have continuously undergone trainings to enhance their expertise for the benefit of 157 PTT GLOBAL CHEMICAL PUBLIC COMPANY LIMITED Form 56-1 One Report 2023
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