Taiwan Mask Corporation Announced the Audit Committee Members. Date of occurrence of the change:2022/05/26. Name of the functional committees: Audit Committee.

Name of the previous position holder: NA . Resume of the previous position holder: NA. Name of the new position holder: Hui-Fen Chan.

Resume of the new position holder: Independent director, ITEQ CORPORATION Independent director, Stark Technology Inc. Independent Director, Formosa I Wind Power Co. Ltd. RAKU CO., LTD. TAIWAN BRANCH (CAYMAN ISLANDS) Director of Institutional Representative Independent director, IMOS-ChipMOS TECHNOLOGIES INC. Circumstances of change: new appointment . Effective date of the new member: 2022/05/26.