[Microloops] Announcement of change in Chief Information Security Officer

1. Type of personnel change (please enter spokesperson, acting spokesperson, important operating officer (e.g. CEO, COO, CMO, CSO, etc.), financial officer, accounting officer, corporate governance officer, chief information security officer, research and development officer, chief internal auditor, or agent for litigious and non-litigious matters): Chief Information Security Officer 2. Date of occurrence of the change: 2026/04/21 3. Name, title, and resume of the previous holder: Wu Tsung-hsien / Senior Manager of IT Department of the Company 4. Name, title, and resume of the new holder: None 5. Type of change (please enter "resignation", "position adjustment", "severance", "retirement", "death", "new appointment", or "dismissal"): Resignation 6. Reason for the change: Resignation 7. Effective date: 2026/04/21 8. Other matters needing explanation: IT Deputy Manager Liao Chih-hung will temporarily act as the Chief Information Security Officer. A separate announcement will be made when a permanent successor is confirmed in the future.