Taiwan Mask Corporation announced the adjustment of accounting officer, financial officer and corporate governance officer. Name, title, and resume of the previous position holder: YANG,YI-TING/accounting and financial and corporate governance officer,CFO. Name, title, and resume of the new position holder: YU,SHU-WEI/accounting officer/TMC accounting department manager, LIN,SHU-HUA/financial officer/TMC financial department manager and TSENG,CHIAO-CHIN/corporate governance officer/TMC project manager.

Reason for the change: Division of responsibilities and corporate governance. The effective date is March 6, 2024.