GC One Report 2023 [EN]

GC Group’s Executives and employees participated in the following activities with external agencies: GC participated in the 2023 Anti-corruption Day, held under the concept “WHAT THE FACT?: Search ACTAi for Answers” by the AntiCorruption Organization of Thailand (ACT) on September 6, 2023, at Krung Thep Aphiwat Central Terminal to empower GC Group’s Executives and employees in spearheading anticorruption endeavors. GC participated in the 2023 International Anticorruption Day (Thailand) entitled “Zero Tolerance Towards Corruption,” held by the Office of the National Anti-Corruption Commission (NACC) virtually on December 8, 2023, to demonstrate the commitment of GC Group’s Executives and employees to transparent and corruption-free business practices. GC put in place whistleblowing channels for the reporting of policy violations or corruption, along with whistleblower protection measures. (Further details appear under “Whistleblowing.”) GC prepared the 2023 anti-corruption performance repor t to t rack the implementat ion of i ts anticorruption measures and plans for the year 2024, which was submitted to the Corporate Governance and Sustainability Committee, the Audit Committee, and the Board of Directors for acknowledgment. In 2023, GC participated in the Thai Chamber of Commerce Business Ethics Standard Test Awards 2023 (21st TCC BEST Awards), organized by the Thai Chamber of Commerce Anti-Corruption and Ethics Promotion Committee to encourage business operators to apply corporate governance principles to organizational management to ensure the prosperity and sustainability of the business. GC was honored with a plaque of honor from the Thai Chamber of Commerce on December 6, 2023. Additionally, it received an Anti-Corruption Award 2023 from the Anti-Corruption Foundation. The prestigious accolade was presented to organizations with outstanding and evident anti-corruption achievements that adhered firmly to corporate governance principles and integrity, demonstrated honesty and transparency, served as a role example, and made positive contribution to society. Whistleblowing GC recognizes the important roles of all stakeholders in its Corporate Governance. Whenever they witness any violation of the Business Code of Conduct, any form of fraud and corruption, or any other case, all stakeholders may submit a report, notification, or complaint directly to either the Chairman of the Corporate Governance and Sustainability Committee, the Head of Internal Audit, or the Company Secretary, or via the GC-provided complaint channels, or any other channels that they trust. Chairman of the Corporate Governance and Sustainability Committee, Head of Internal Audit, Company Secretary : PTT Global Chemical Public Company Limited 555/1 Energy Complex, Building A, 18th Floor Vibhavadi Rangsit Road, Chatuchak Bangkok 10900 e-Mail : whistleblower@pttgcgroup.com Website : www.pttgcgroup.com Whistleblowing Policy Procedure GC has formulated and announced the following Whistleblower Policy: (1) Complaint Screening: The responsible department screens the essential information under the establ ished pol icy. The complaints may be anonymously filed as long as they provide clear reasons and sufficient evidence. If the whistleblower has provided his or her name or contact information, he or she will be notified by the Company. (2) Investigation: For valid complaints, the Chief Executive Officer and President will appoint an investigation committee under GC work regulations to conduct an investigation and fact-finding as well as to determine disciplinary action according to GC’s work regulations so as to ensure fairness to all parties. (3) Reporting: Once the complaint has been dealt with, the whistleblower will be notified of the outcome if the contact information is provided. The outcome will also be reported to the Corporate Governance and Sustainabi l ity Committee and the Audit Committee. 206

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