Hongsuo Announces Change in Information Security Officer

1. Position affected (please specify spokesperson, acting spokesperson, key operational executives such as CEO, COO, CMO, CSO, CFO, accounting officer, corporate governance officer, CISO, R&D head, internal auditor, or litigation/non-litigation representative): Information Security Officer

2. Date of change: 2026/06/22 (R.O.C. Year 115)

3. Former officer's name, title, and background: Zhang Fu-Ming, Director of Information Department

4. New officer's name, title, and background: To be appointed by the Board of Directors

5. Nature of change (please select from 'resignation', 'reassignment', 'redundancy', 'retirement', 'death', 'new appointment', or 'dismissal'): Resignation

6. Reason for change: Resigned due to health concerns; will subsequently serve as company advisor

7. Effective date: 2026/06/22 (R.O.C. Year 115)

8. Additional disclosures: The new Information Security Officer will be officially announced following approval at the upcoming Board of Directors meeting.