[CHELIC] Announcement of Change in Company's Acting Spokesperson

1. Type of Personnel Change (Please enter Spokesperson, Acting Spokesperson, Important Operational Executive (e.g., CEO, COO, CMO, CSO), Financial Executive, Accounting Executive, Corporate Governance Executive, Chief Information Security Officer, R&D Executive, Internal Audit Executive, or Litigation and Non-Litigation Agent): Acting Spokesperson 2. Date of Change: 2026/05/06 3. Name, Rank, and Brief Resume of Former Appointee: None 4. Name, Rank, and Brief Resume of New Appointee: Hsu Chuan-Chieh, Vice President of the Company's Finance Department 5. Details of Change (Please enter 'Resignation', 'Job Adjustment', 'Layoff', 'Retirement', 'Death', 'New Appointment', or 'Dismissal'): New Appointment 6. Reason for Change: New Appointment 7. Effective Date: 2026/05/06 8. Other Matters to be Specified: None