Yong Guan-KY Announces Resignation of Independent Director

1. Date of change: 2026/04/14 2. Type of personnel (enter Corporate Director, Corporate Supervisor, Independent Director, Natural Person Director, or Natural Person Supervisor): Independent Director 3. Title and Name of former incumbent: Independent Director / Shi Chun-shih 4. Brief resume of former incumbent: Director of Tatung Co., Ltd. 5. Title and 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. Number of shares held by new appointee at the time of election: Not Applicable 10. Original term (e.g., XX/XX/XX ~ XX/XX/XX): 2025/5/28~2028/5/27 11. Effective date of new appointment: Not Applicable 12. Change ratio of directors in the same term: 1/9 13. Change ratio of independent directors in the same term: 1/3 14. Change ratio of supervisors in the same term: Not Applicable 15. Whether directors exceeding one-third have changed (enter Yes or No): No 16. Other matters that need to be stated (if the event or resolution subject is a publicly issued company or above, this major information also meets the requirements of Article 7, Paragraph 6 of the Enforcement Rules of the Securities Transaction Act regarding matters that have a significant impact on shareholder rights or securities prices): Will be supplemented by election at the next shareholder meeting.