Sinmayi Appoints Hsieh Tsung-Li as New Corporate Governance Officer

Release Date: August 12, 2025 Statement Date: August 11, 2025 Statement Time: 17:18:53 Company Code: 2442 Company Name: Sinmayi Subject: Announcement of Change in Corporate Governance Officer Applicable Clause: Clause 8 Factual Date: August 11, 2025

Details: 1. Type of Personnel Change (Please select from: Spokesperson, Acting Spokesperson, Key Operational Executive (e.g., CEO, COO, CMO, CSO), Financial Officer, Accounting Officer, Corporate Governance Officer, Chief Information Security Officer, R&D Officer, Internal Audit Officer, Litigation/Non-litigation Agent): Corporate Governance Officer 2. Date of Change: August 11, 2025 3. Former Officer’s Name, Title, and Resume: Not Applicable 4. New Officer’s Name, Title, and Resume: Hsieh Tsung-Li / Accounting Officer 5. Nature of Change (Please enter 'Resignation', 'Job Adjustment', 'Dismissal', 'Retirement', 'Death', 'New Appointment', or 'Removal'): New Appointment 6. Reason for Change: New Appointment 7. Effective Date: August 11, 2025 8. Additional Notes: The company previously announced the change in Corporate Governance Officer on July 31, 2025, and the appointment was formally approved by the board of directors on August 11, 2025.