Chung Sha Announces Change in Chief Executive Officer

1. Date of board resolution or change occurrence: 2026/06/18 2. Position (please enter 'Chairman' or 'General Manager'): General Manager 3. Name of outgoing executive: Hsieh Jung-Zhe 4. Outgoing executive's background: Former General Manager of the company 5. Name of incoming executive: Li Wei-Zhang 6. Incoming executive's background: General Manager of the company's Diamond Division and company spokesperson 7. Nature of change (please select from 'resignation', 'dismissal', 'end of term', 'job reassignment', 'redundancy', 'retirement', 'deceased', or 'new appointment'): Retirement 8. Reason for change: Due to the retirement of the former General Manager, the Board of Directors has resolved to appoint Li Wei-Zhang as the new General Manager of the company 9. Effective date of new appointment: 2026/07/01 10. Other matters to be disclosed (if the subject is a publicly listed company, this significant information also qualifies as a matter with significant impact on shareholders' rights or securities prices under Article 7, Paragraph 6 of the Enforcement Rules of the Securities and Exchange Act): None

Keywords: Significant Information