【Ampusyn】Announcement of personnel change for the company's internal audit supervisor

1. Type of personnel change (Please enter spokesperson, acting spokesperson, important operational executives (e.g., CEO, COO, CMO, CSO, etc.), financial officer, accounting officer, corporate governance officer, information security officer, R&D officer, internal audit supervisor, or litigation and non-litigation agent): Internal Audit Supervisor 2. Date of change: 2026/04/23 3. Name, title, and brief resume of the former incumbent: Hsu Hsiang-Fu / Internal Audit Supervisor of the company 4. Name, title, and brief resume of the new incumbent: Hsieh Chia-Chen / Internal Audit Supervisor of the company 5. Type of change (Please enter "resignation", "position adjustment", "layoff", "retirement", "death", "new appointment", or "dismissal"): New appointment 6. Reason for change: New appointment 7. Effective date: 2026/04/23 8. Other matters that need to be specified: Approved by the Board of Directors today.