IRPC One Report EN

Senior Executive Officers IRPC’s six senior executive officers according to the Securities and Exchange Commission’s definition, as of January 1, 2022, consist of: (Details of the executive profiles appear under “Management Committee” Page 46-53) Note: Mr. Veerawat Srinoradithlert Executive Vice President, Management and Organizational Potential Development and Acting Executive Vice President, Innovation and Operations for Excellence, resigned on April 30, 2021 Name Position 1. Mr. Chawalit Tippawanich President and Chief Executive Officer/ Secretary of the Board of Directors 2. Mr. Woravuth Sivapetranart Acting Senior Executive Vice President, Innovation and Operation Excellence/ Senior Executive Vice President, Petrochemical and Refinery Operation 3. Mr. Somkiat Lertritpuwadol Senior Executive Vice President, Corporate Strategy Planning and Business Development 4. Mrs. Nidcha Jirametthanakij Senior Executive Vice President, Corporate Accounting & Finance 5. Ms. Wanida Utaisomnapa Senior Executive Vice President, Corporate Commercial and Marketing 6. Mr. Poramet Junwichit Senior Executive Vice President, Corporate Organization Effectiveness Duties and Responsibilities 1. Implement the President and Chief Executive Officer’s policies and goals. 2. Determine and align the strategic plans, objectives, and primary goals of their respective functions with IRPC’s vision and mission. These shall serve as guidelines for implementation by employees. 3. Ensure the accomplishment of predetermined goals, objectives and short- and long-term strategic plans within the management framework under the organizational structure within the scope of their assignments. 4. Provide advice, support, assist, and find solutions to problems for their team. They shall also create motivation and a work environment that maximize employees’ performance efficiency. 5. Encourage personal development among employees in order to realize their potential for their own and the company’s benefits. 6. Foster the company’s sustainable growth under good corporate governance principles, with due regard to environmental stewardship and social responsibility. 7. Lead by example and serve as IRPC DNA Role Model for their subordinates. Management Committee To bolster systematic operational efficiency and strengthen connections and good coordination within IRPC and in its interaction with joint ventures and subsidiaries, the President and CEO established the Management Committee (MC), consisting of the President and CEO, senior executive vice presidents and executive vice presidents of all business units. the Executive Vice President, Corporate Affairs serves as the secretary to the Management Committee. With weekly meetings scheduled for Mondays for the entire year, the Management Committee met 50 times in 2021. 237 Corporate Governance Structure and Important Information about the Board of Directors, Sub-committees, Executives, Employees and Others IRPC PUBLIC COMPANY LIMITED

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