GIGA-BYTE Announces Board Appointment of New Chairman

1. Date of board resolution or change: 2026/06/16 2. Position affected (please enter 'Chairman' or 'CEO'): Chairman 3. Former incumbent's name: Mr. Yeh, Chia-Wen, representative of Heng-Chieh Technology Co., Ltd. 4. Former incumbent's resume: Chairman of GIGA-BYTE Technology Co., Ltd. 5. New appointee's name: Mr. Yeh, Chia-Wen, representative of Heng-Chieh Technology Co., Ltd. 6. New appointee's resume: Chairman of GIGA-BYTE Technology Co., Ltd. 7. Nature of change (please enter 'resignation', 'dismissal', 'end of term', 'duty adjustment', 'redundancy', 'retirement', 'deceased', or 'new appointment'): End of term 8. Reason for change: Board re-election following the end of term. 9. Effective date of new appointment: 2026/06/16 10. Other matters to be disclosed (if the subject is a publicly listed company, this announcement qualifies as a material event under Article 7, Paragraph 6, Item 6 of the Enforcement Rules of the Securities and Exchange Act): None.