Subject: Announcement of the change of chief internal auditor

Contents:

1.Type of personnel changed (please enter: spokesperson, acting spokesperson, important personnel (CEO, COO, CMO, CSO, etc.), financial officer, accounting officer, corporate governance officer, chief information security officer, research and development officer, chief internal auditor, or designated and non-designated representatives): chief internal auditor

2.Date of occurrence of the change:2026/03/16

3.Name, title, and resume of the previous position holder:

CHAO, HSIAO-HUEI, assistant vice president, chief internal auditor

4.Name, title, and resume of the new position holder:

LI, SHUN-PAO, vice president, chief internal auditor

5.Type of the change (please enter: "resignation", "position adjustment", "retirement", death", "new replacement" or "dismissal"):position adjustment

6.Reason for the change: position adjustment

7.Effective date:2026/03/16

8.Any other matters that need to be specified: None