[CSK] Announcement of Change in Vice General Manager of Production Department and Acting Spokesperson of Subsidiary Chung Hung Steel Corporation

1. Type of personnel change (Please enter Spokesperson, Acting Spokesperson, Key Operating Officer (e.g., CEO, COO, CMO, CSO, etc.), Financial Officer, Accounting Officer, Corporate Governance Officer, Information Security Officer, R&D Officer, Internal Audit Officer, or Litigation and Non-litigation Agent): Vice General Manager of Production Department and Acting Spokesperson 2. Date of change: June 9, 2026 3. Name, position, and brief history of the former incumbent: Hong Zheng-Xiong, current General Manager and Spokesperson of Chung Hung Corporation, formerly concurrently served as Vice General Manager of the Production Department of Chung Hung Steel Corporation. 4. Name, position, and brief history of the new incumbent: Chen Bing-Yuan, newly appointed Vice General Manager of the Production Department and Acting Spokesperson of Chung Hung Corporation; formerly Assistant Vice General Manager of the Production Department of Chung Hung Corporation. 5. Circumstances of change (Please enter 'Resignation', 'Job Adjustment', 'Dismissal', 'Retirement', 'Death', 'New Appointment', or 'Removal'): Job Adjustment 6. Reason for change: Organizational job adjustment 7. Effective date: June 9, 2026 8. Other matters to be noted: None