[Tatung] Announcement: Board of Directors Approves Appointment of Chief Sustainability Officer

1. Type of personnel change (please enter spokesperson, acting spokesperson, important operational managers (such as CEO, COO, CMO, CSO, etc.), financial manager, accounting manager, corporate governance officer, information security officer, R&D manager, internal audit manager, or litigation and non-litigation agent): Chief Sustainability Officer 2. Date of change: 2026/04/28 3. Name, title and resume of former incumbent: Not applicable 4. Name, title and resume of new incumbent: Wang Wei-Lin, Vice President and Chief Financial Officer of the Company 5. Type of change (please enter "resignation", "job adjustment", "layoff", "retirement", "death", "new appointment" or "dismissal"): New appointment 6. Reason for change: 2026/04/28 7. Effective date: 2026/04/28 8. Other matters to be specified: None