TTET Union Corporation announced the change of financial officer, accounting officer and acting spokesperson. Name, title, and resume of the previous position holder: Hu Yu-Chih, financial officer, accounting officer, and acting spokesperson of TTET Union Corporation. Name, title, and resume of the new position holder: Chen Guan-Chou, Chief Internal Auditor of TTET Union Corporation.

Reason for the change: position adjustment. Effective date: June 1, 2023. Date of occurrence of the change: May 4, 2023.