[O-Bank] Announcement of Bank's Unaudited Financial Results for May 2026 and Net Asset Value Per Share

1. Date of Fact Occurrence: 115/06/10 2. Company Name: O-Bank Co., Ltd. 3. Relationship with Company (Enter "Parent Company" or "Subsidiary"): Parent Company 4. Proportion of Mutual Shareholding: Not Applicable 5. Reason for Occurrence: As stated in the subject 6. Countermeasures: Not Applicable 7. Other Matters to be Notified (If the subject of the event occurrence or resolution is a publicly issued company or above, this major information also meets the criteria of Article 7, Paragraph 9 of the Regulations Governing the Offer and Issuance of Securities by Publicly Companies, which significantly affects shareholder equity or securities prices): Unit: NT$ Thousand May Cumulative Jan-May --------------------------------------------------------------- Consolidated Profit Before Tax 497,168 2,610,019 Consolidated Profit After Tax 395,808 2,093,859 Parent Company Profit Before Tax 222,689 1,406,067 Parent Company Profit After Tax 200,536 1,242,893 Basic EPS After Tax (NT$) 0.45 Net Asset Value Per Share as of end of May 2026 is NT$15.29 Keywords: Major Information