[AES-KY] Announcement of the Board's Election of Chairman

1. Date of the board resolution or date of change: 2026/05/28 2. Personnel category (Chairman or General Manager): Chairman 3. Name of the predecessor: Song Fu-xiang 4. Resume of the predecessor: Chairman of AES-KY 5. Name of the successor: Song Fu-xiang 6. Resume of the successor: Chairman of AES-KY 7. Reason for change (Resignation, Dismissal, Expiration of term, Job adjustment, Layoff, Retirement, Death, or New appointment): Expiration of term 8. Reason for the change: Expiration of term 9. Effective date of the new appointment: 2026/05/28 10. Other matters to be stated (If the subject of the event or resolution is a publicly listed company, this major message complies with Article 7, Paragraph 6 of the Enforcement Rules of the Securities and Exchange Act regarding matters with significant impact on shareholder equity or securities prices): None.