[Tong Hsing] Announcement of Change in Internal Audit Supervisor

1. Personnel Change: Internal Audit Supervisor 2. Date of Change: 2026/05/28 3. Former Supervisor Name/Title: Li Jing-Yi / Internal Audit Supervisor 4. New Supervisor Name/Title: To be announced after selection 5. Reason for Change: Resignation 6. Reason for Change: Ms. Li Jing-Yi submitted her resignation 7. Effective Date: 2026/06/05 8. Other matters: (1) Ms. Li Jing-Yi's last day is June 5, 2026. (2) The new supervisor will be announced after Audit Committee and Board approval.