IRPC Annual Report 2023

Corporate Governance Policy IRPC, under the supervisory oversight of the Board of Directors, has prioritized good corporate governance and striven to uphold corporate governance that meets the internationally-accepted standards. Since 2007, the company has established the Corporate Governance Policy as an integral part of its business operations. The company has announced the Corporate Governance Policy, developed Corporate Governance Handbook, and established Corporate Governance Code that apply to all members of the Board, IRPC executives and employees. This is to provide practical guidelines on ethical conduct that satisfy national and international standards. The Board has assigned the Corporate Governance and Sustainability Committee to supervise and oversee all aspects of the company’s operations to achieve international benchmarks, in compliance with applicable laws, regulations and guidelines, in alignment with the company’s strategies and business direction. The Committee is also responsible for following up on performance in accordance with the principles of good corporate governance on an annual basis through meetings with a subcommittee which reports the outcomes to the Board of Directors on a quarterly basis. In addition, IRPC has adopted the good corporate principles and practices of Office of the Securities and Exchange Commission (SEC), the Stock Exchange of Thailand (SET), Corporate Governance Assessment Report of the Thai Institute of Directors (IOD), Organization for Economic Cooperation and Development (OECD), ASEAN CG Scorecard, Dow Jones Sustainability Index (DJSI) and best practices of leading global corporations. These guidelines help bolster confidence in the company among all stakeholders as well as enable proper and effective management and promote corporate competitiveness on the path toward sustainable growth. Overview of Corporate Governance Policy and Guidelines The Board of Directors intends to steer IRPC Public Company Limited and its subsidiaries in the “IRPC Group” to steadfastly operate within the framework of Good Corporate Governance principles in pursuit of operational excellence, transparency, accountability, and benefits to shareholders while making sure stakeholders’ interests are protected. To accomplish this aim, IRPC has adopted the SET’s Six Pillars of Good Corporate Governance, also known for its acronym “CREATE,” as practical guidelines to be observed by the Board of Directors, executives, the management, and employees as follows: Creation of Long Term Value Vision in creating sustainable value for the organization in the long term 01 Accountability Responsibility for one’s own decisions and actions, capability in explaining, and justifying decisions made 04 Responsibility Responsibility for working with the requisite skill and potential 02 Transparency Transparency in conducting business that can be verified and disclosed to stakeholders 05 Equitable Treatment Treating individuals fairly and impartially, with justifications 03 Ethics and Code of Conduct Maintaining ethics and moral principles in conducting business 06 C R E A T E 195 Corporate Governance Policy 56-1 ONE REPORT 2023

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