CTBC Bank Announces Regulatory Penalty Imposed by the Financial Supervisory Commission

1. Date of Incident: July 2, 115 (2026) 2. Reporting Entity: Subsidiary - CTBC Bank Co., Ltd. 3. Reason for Incident (Event Description): A former employee of CTBC Bank misappropriated ATM clearing funds and financial clearing funds, resulting in violations of the Banking Act and the applicable 'Implementation Rules for Internal Control and Audit Systems of Financial Holding Companies and Banking Institutions' at the time. Accordingly, a fine of NT$4 million has been imposed under Article 129, Paragraph 7 of the Banking Act. 4. Handling Process: The bank will carry out relevant improvement measures in accordance with regulatory authority recommendations. 5. Penalty Details: A fine of NT$4,000,000. 6. Was a monetary penalty imposed?: Yes 7. Amount of Penalty (NTD): NT$4,000,000 8. Estimated Potential Loss or Impact: NT$4,000,000 9. Amount Potentially Covered by Insurance (NTD): None 10. Improvement Status and Future Response Measures: The company will implement improvements as directed by the regulatory authority. Business operations remain normal. 11. Has a major information announcement already been made regarding the same event?: No 12. Other Matters to be Disclosed: None