[Yuanta] Announcement on behalf of subsidiary Yuanta Securities of the acquisition of O-Bank's 2026 1st subordinated financial debentures

1. Name and nature of subject matter: O-Bank Co., Ltd. 2026 1st subordinated financial debentures. 2. Date of occurrence: 2026/4/22 3. Date of board resolution: N/A 4. Other decision date: Chairman's approval on 2026/4/14 5. Volume, unit price, and total amount: Volume: 225 units. Unit price: Face value TWD 10,000,000. Total amount: TWD 2,250,000,000. 6. Counterparty: O-Bank Co., Ltd. Relationship: Non-related party. 7-10. Related party info & Disposal details: N/A 11. Payment terms: Lump sum cash settlement. Contract restrictions: None. 12. Method of decision: Price negotiation based on Yuanta Securities' authority. 13. Net worth per share of underlying company: N/A 14. Cumulative holdings: Volume: 225 units. Amount: TWD 2.25 billion. Restriction of rights: None. 15. Ratio of securities investment to total assets: 35.94%. Ratio to equity: 189.58%. Working capital: TWD 98,594,791,266. 16. Broker info: N/A 17. Purpose of acquisition: Execution of general business. 18-30. Other standard disclosures: N/A or None.