Chang Hwa Commercial Bank: Announcement of Director Change

1. Date of change: 2026/05/07 2. Type of personnel selected or changed (please enter legal person director, legal person supervisor, independent director, natural person director, or natural person supervisor): Natural person director 3. Title and name of former incumbent: Director / Li Wen-Hsiung 4. Brief resume of former incumbent: Director of Chang Hwa Bank 5. Title and name of new incumbent: None 6. Brief resume of new incumbent: Not applicable 7. Nature of change (please enter 'resignation', 'removal', 'term expiration', 'death', or 'new appointment'): Resignation 8. Reason for change: Resignation 9. Number of shares held by new incumbent at the time of election: Not applicable 10. Original term (e.g., xx/xx/xx ~ xx/xx/xx): 2023/06/19 ~ 2026/06/18 11. Effective date of new appointment: Not applicable 12. Percentage of director changes in the same term: 1/9 13. Percentage of independent director changes in the same term: 0 14. Percentage of supervisor changes in the same term: Not applicable 15. Does it involve changes of more than one-third of the directors (please enter Yes or No): No 16. Other matters that need to be specified (If the event or resolution's main body is a public offering or above company, this material information also complies with Article 7, Paragraph 6 of the Enforcement Rules of the Securities and Exchange Act, which states matters that have a significant impact on shareholders' rights or securities prices): Handled based on the resignation letter from Mr. Li Wen-Hsiung received by the bank on May 7, 2026. The resignation effective date is May 8, 2026.