【O-Bank】Announcement of Change in Chief Auditor

1. Personnel Change Type (Please enter spokesperson, acting spokesperson, important operational executive (e.g., CEO, COO, CMO, CSO, etc.), financial executive, accounting executive, corporate governance executive, information security officer, R&D executive, internal audit executive, or litigation/non-litigation agent): Internal Audit Executive 2. Date of Change: 2026/04/29 (ROC calendar 115/04/29) 3. Name, Rank, and Brief Resume of Former Appointee: Xie Jun, Vice President / Chief Auditor, O-Bank 4. Name, Rank, and Brief Resume of New Appointee: Zhang Qiongyue, Vice President / Deputy Head of Audit Department, O-Bank 5. Nature of Change (Please enter "resignation", "job adjustment", "layoff", "retirement", "death", "new appointment", or "dismissal"): Retirement 6. Reason for Change: Retirement 7. Effective Date: To be approved by the Chairperson upon authorization from the Board of Directors, after approval from the Financial Supervisory Commission. 8. Other Matters to be Specified: None