Yi Chia Announces New Members of Audit Committee

1. Date of Change: 2026/06/16

2. Name of Functional Committee: Audit Committee

3. Former Members: Huang Chin-Ming, Chen Tai-Jan, Hsu Wan-Long

4. Former Members' Resumes: Huang Chin-Ming: Chairman of Chroma ATE Inc. Chen Tai-Jan: Distinguished Chair Professor at National Taiwan University Hsu Wan-Long: Advisor to Hsinchu City Business Managers Advancement Association

5. New Members: Hsu Wan-Long, Hsu Yu-Tung, Liu Chih-Hung

6. New Members' Resumes: Hsu Wan-Long: Advisor to Hsinchu City Business Managers Advancement Association Hsu Yu-Tung: Chairman and CEO of Crystal Semiconductor Corp. Liu Chih-Hung: Chairman of Jetron Material Technology Corp.

7. Nature of Change (select from 'resignation', 'removal', 'term expiration', 'death', or 'new appointment'): Term Expiration

8. Reason for Change: Full board re-election due to expiration of directors' term

9. Original Term (e.g., xx/xx/xx ~ xx/xx/xx): 2023/06/20 ~ 2026/06/19

10. Effective Date of New Appointment: 2026/06/16

11. Other Matters to be Disclosed: None