ATEN International Announces Change of Corporate Director Representative for Key Subsidiary ATEN Technology

1. Date of Change: July 23, 115 (2026) 2. Corporate Name: Aten US Holdings Inc. 3. Former Representative: Tian Qing-Wei 4. Former Representative's Background: Director, Aten Technology 5. New Representative: Yu Chun-Chang 6. New Representative's Background: Senior Assistant Manager, General Management Office, ATEN International Co., Ltd. 7. Reason for Change: Retirement of the previous corporate director representative; successor appointed by the corporate director 8. Original Term: March 31, 2026, until the next shareholders' meeting elects new directors 9. Effective Date of New Appointment: July 23, 2026 10. Other Matters to be Disclosed: None