MediaTek: Announcement by Important Subsidiary RichWave Technology Inc. Regarding Re-appointment of Directors by Corporate Shareholder and Election of Chairman

1. Date of change: 2026/04/28 2. Legal entity name: MediaTek Inc. 3. Names of former directors: Director: Rick Tsai Director: David Ku Director: S.H. Yuan 4. Resumes of former directors: Director: Rick Tsai, CEO of MediaTek Inc. Director: David Ku, CFO of MediaTek Inc. Director: S.H. Yuan, General Manager of RichWave Technology Inc. 5. Names of new directors: Director: Rick Tsai Director: David Ku Director: S.H. Yuan 6. Resumes of new directors: Director: Rick Tsai, CEO of MediaTek Inc. Director: David Ku, CFO of MediaTek Inc. Director: S.H. Yuan, General Manager of RichWave Technology Inc. 7. Reason for change: Expiration of directors' terms, re-appointment of directors by corporate shareholders and election of the chairman 8. Original term (e.g., xx/xx/xx to xx/xx/xx): 2023/04/28~2026/04/27 9. Effective date of new appointment: 2026/04/28 10. Other matters to be specified: Mr. Rick Tsai was elected as the chairman at the board meeting held on the same day.