Young Energy Storage Group: Announcement on the Change of Chairman of Subsidiary Shih Feng Power Co., Ltd.

1. Date of board of directors resolution or occurrence of change: 2026/05/06 2. Personnel type (Please enter Chairman or General Manager): Chairman 3. Name of former appointee: Kuo Tai-Chiang 4. Brief resume of former appointee: Chairman of Shih Feng Power Co., Ltd. 5. Name of new appointee: Not applicable 6. Brief resume of new appointee: Not applicable 7. Type of change (Please enter "Resignation", "Dismissal", "Expiration of term", "Position adjustment", "Layoff", "Retirement", "Death", or "New appointment"): Dismissal 8. Reason for change: Corporate director re-designates representative 9. Effective date of new appointment: Not applicable 10. Other matters that should be specified (If the subject of the event or resolution is a public company or above, this material information also complies with Article 7, Paragraph 6 of the Enforcement Rules of the Securities and Exchange Act regarding matters that have a material impact on shareholders' equity or securities prices): The new chairman will be separately announced after re-election by the board of directors. Keywords: Material Information