Walsin (1605): Appointment of Corporate Director Representative

Announcement Date: 2025/05/22 Company Code: 1605 Company Name: Walsin Subject: Appointment of Corporate Director Representative Applicable Clause: Clause 6 Event Date: 2025/05/22

Explanation: 1. Change Date: 2025/05/22 2. Corporate Name: Winbond Electronics Corp. 3. Previous Representative Name: N/A 4. Previous Representative Bio: N/A 5. New Representative Name: Chiao Tzu-Kai 6. New Representative Bio: Vice Chairman, Nuvoton Technology Corp. 7. Reason for Change: Full re-election due to expiration of term 8. Previous Term: N/A 9. Effective Date: 2025/05/22 10. Other Items: None