ATEN Technology, Key Subsidiary of ATEN International, Announces Appointment of New Financial Officer

1. Position Category (Please specify: Spokesperson, Acting Spokesperson, Key Operating Executive (e.g., CEO, COO, CMO, CSO), Financial Officer, Accounting Officer, Corporate Governance Officer, Chief Information Security Officer, R&D Director, Internal Audit Director, or Litigation/Non-litigation Agent): Financial Officer

2. Date of Change: July 23, 2026

3. Name, Title, and Background of Former Officer: Ching-Wei Tien / Financial Officer, ATEN Technology

4. Name, Title, and Background of New Officer: Chun-Chang Yu / Senior Assistant Manager, General Management Office, ATEN International Co., Ltd.

5. Nature of Change (Please select from 'Resignation', 'Job Reassignment', 'Layoff', 'Retirement', 'Death', 'New Appointment', or 'Dismissal'): New Appointment

6. Reason for Change: Appointment approved by the Board of Directors

7. Effective Date: July 23, 2026

8. Other Matters to be Disclosed: None