[O-Bank] Announcement of Change in Chief Auditor

O-Bank Co., Ltd. has announced the change of the company's Chief Auditor as follows:

1. Category of personnel change: Chief Auditor (Internal Audit Officer) 2. Date of occurrence of the change: June 12, 2026 (ROC 115/06/12) 3. Name, title, and biography of the outgoing person: Chun Hsieh, Vice President / Chief Auditor of O-Bank 4. Name, title, and biography of the incoming person: Chiung-Yueh Chang, Vice President / Deputy Director of the Audit Department of O-Bank 5. Type of change: Retirement 6. Reason for change: Retirement 7. Effective date: June 15, 2026 (ROC 115/06/15) 8. Other matters to be specified: Processed in accordance with Letter No. Jin-Guan-Jian-Yin-Zi-1150503097 of the Financial Supervisory Commission.