GC One Report 2023 [EN]

compliance with regulations of the Securities and Exchange Commission and Stock Exchange of Thailand and any other relevant laws. 4) GC has established GC Way of Conduct to serve as guidelines for the operation and governance of companies in which GC holds shares through personnel assigned to serve as Directors or Execut ives or assigned to supervise such companies, including GC’s internal units which are responsible for supervising companies under GC Group, so as to ensure that the operation of such companies is consistent with that of GC, has the same standard, transparency and good governance system that keeps the business operation across GC Group and drives the business towards sustainability. 5) GC has implemented multi-level governance, in which companies under GC Group are required to establish their Way of Conduct guidelines in line with those of GC for use in governing companies in which they hold shares, so as to establish a uniform operational standard across GC Group. 6) In 2023, GC promoted and enhanced the implementation of GC Way of Conduct as detailed below. GC reviewed and improved GC Way of Conduct by applying various international standards, GC’s operational standards, and best practices to the governance of companies under GC Group. GC also reviewed the group-level management of key activities as well as governance to ensure suitability for the risks, types of business, business models, and locations of such companies to maintain al ignment wi th GC Group’s investment objectives and business strategies. GC established and communicated GC Way of Conduct 2023 to units which are responsible for the management and governance of companies under GC Group and coordinators for the implementation of GC Way of Conduct among such companies in order to advance the adoption of GC’s operational standards among them. GCprescribedGCWay of Conduct implementation assessments in order to monitor compliance and establish operational standards in different areas for GC Group. GC prescribed that GC Way of Conduct implementation progress be monitored and reported to Executives on a yearly basis. GC Way of Conduct Webpage was developed on the Share Point system. The GC Way of Conduct Handbook was also published both in Thai and English in an e-Book and video formats to serve as a learning tool that offers an overview of GC Way of Conduct to every relevant party in GC. In addition, GC Way of Conduct Communication Newsletters were also d i s t r i bu t ed t o f os t e r awa r eness and understanding and strengthen GC Group’s management approach. Ensuring Compliance with Corporate Governance Policy and Practices GC considers good corporate governance a priority and has thus established and included relevant policies and practices in its Corporate Governance and Business Code of Conduct Handbook. The Company also promotes its adoption to foster confidence among GC’s stakeholders. In 2023, GC conducted various activities to ensure compliance with the corporate governance practices of GC Group, and based on monitoring, it was found that GC fully complied with the practices, as summarized below. Disclosure of Information and Transparency GC is committed to transparent and timely disclosure of accurate and complete information, financial and non-f inancial , to stakeholders in conformi ty to applicable laws, rules, and regulations via the SET Link and the Company’s website at www.pttgcgroup.com. Its Investors Relations (IR) and Corporate Secretary (CS) Departments are in charge of information disclosure and addressing inquiries. GC carried out the following: Disclosure of Material Information in Form 56-1 One Report: Financial Information: GC’s financial statements are audited by a professional auditor for the accuracy of their material information and conformance to financial auditing standards. Each set of financial statements has been approved by the Audit Committee and the Board of Directors before their disclosure to shareholders and the public. The Board of Directors’ statement on the accountability of its financial reports is disclosed alongside the auditor’s report in Form 56-1 One Report. 193 PTT GLOBAL CHEMICAL PUBLIC COMPANY LIMITED Form 56-1 One Report 2023

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