Hong Sheng Announces Resignation of General Manager

1. Date of Board Resolution or Change: 2026/06/30 2. Position (Please enter 'Chairman' or 'General Manager'): General Manager 3. Name of Former Executive: Lu Yong-Fu 4. Background of Former Executive: General Manager of the Company 5. Name of New Executive: Not Applicable 6. Background of New Executive: Not Applicable 7. Nature of Change (Please enter 'Resignation', 'Dismissal', 'End of Term', 'Duty Adjustment', 'Redundancy', 'Retirement', 'Deceased', or 'New Appointment'): Resignation 8. Reason for Change: Resignation 9. Effective Date of New Appointment: Not Applicable 10. Other Matters to be Disclosed (If the subject is a publicly issued company or above, this significant information also meets the criteria under Article 7, Paragraph 6 of the Enforcement Rules of the Securities and Exchange Act regarding matters significantly affecting shareholders' rights or securities prices): (1) Prior to the appointment of the new General Manager, Deputy General Manager Guo Li-Wei will temporarily assume the responsibilities. (2) The new appointee will be announced separately after approval by the Board of Directors.