[GUC] Announcement regarding the appointment of members to the Compensation Committee

1. Date of change: 2026/05/21 2. Name of the functional committee: Compensation Committee 3. Names of outgoing members: Independent Director Chin Lien-Fang Independent Director Ting Yu-Kang Independent Director Huang Tsui-Hui Independent Director Chen Hou-Ming 4. Resumes of outgoing members: Chin Lien-Fang: Ph.D. in Nuclear Engineering and Applied Physics from Columbia University, USA; Senior Vice President of TSMC. Ting Yu-Kang: MBA from the University of Detroit, USA; Chairman of Entie Commercial Bank. Huang Tsui-Hui: MBA from Cornell University, USA; Chairman and CEO of H&Q Asia Pacific. Chen Hou-Ming: Ph.D. from the Institute of Commerce, National Taiwan University; Honorary Professor, Department of International Business, National Taiwan University. 5. Names of new members: Independent Director Chin Lien-Fang Independent Director Ting Yu-Kang Independent Director Huang Tsui-Hui Independent Director Chen Hou-Ming Independent Director Chen Chao-Hung 6. Resumes of new members: Chin Lien-Fang: Ph.D. in Nuclear Engineering and Applied Physics from Columbia University, USA; Senior Vice President of TSMC. Ting Yu-Kang: MBA from the University of Detroit, USA; Chairman of Entie Commercial Bank. Huang Tsui-Hui: MBA from Cornell University, USA; Chairman and CEO of H&Q Asia Pacific. Chen Hou-Ming: Ph.D. from the Institute of Commerce, National Taiwan University; Honorary Professor, Department of International Business, National Taiwan University. Chen Chao-Hung: Ph.D. in Law from University College London, UK; Associate Professor, College of Law, National Taiwan University. 7. Reason for change: Re-election upon expiration of term. 8. Cause for change: Re-election upon expiration of term. 9. Former term: Not applicable. 10. Effective date for new members: 2026/05/21. 11. Other matters: None.