Yong Guan-KY Announces Resignation of Independent Director

1. Date of change: 2026/04/14 2. Type of personnel (enter Chairman, General Manager, Independent Director, Natural Person Director, or Natural Person Supervisor): Independent Director 3. Name of former incumbent: Shi Chun-shih 4. Brief resume of former incumbent: Director of Tatung Co., Ltd. 5. Name of new appointee: Not Applicable 6. Brief resume of new appointee: Not Applicable 7. Circumstance of change (enter 'Resignation', 'Dismissal', 'Term Expiration', 'Death', or 'New Appointment'): Resignation 8. Reason for change: Consideration of personal health conditions and career planning. 9. Original term (e.g., XX/XX/XX ~ XX/XX/XX): 2025/5/28~2028/5/27 10. Effective date of new appointment: Not Applicable 11. Other matters that need to be stated: None.