[MediaTek] Announcement of Board of Directors' Resolution to Conduct Capital Reduction by Recalling and Cancelling Restricted Employee Stock Options

1. Date of Board Resolution: 2026/04/30 2. Reason for Capital Reduction: Due to employees who were granted restricted employee stock options not meeting the vesting conditions, the restricted employee stock options will be recalled and cancelled. 3. Capital Reduction Amount: NT$88,830 4. Shares to be Cancelled: 8,883 shares 5. Capital Reduction Ratio: 0.001% 6. Share Capital After Reduction: NT$16,038,954,070 7. Date of Shareholders' Meeting: Not applicable 8. Number of outstanding common shares after the new shares are listed following the capital reduction: 1,603,895,407 shares 9. Percentage of outstanding common shares after the new shares are listed following the capital reduction (Number of listed common shares after capital reduction / Number of outstanding common shares after capital reduction): Not applicable 10. If the number of listed common shares after capital reduction in the preceding two items is less than 60 million shares and less than 25%, please explain the measures to address low equity liquidity: Not applicable 11. Effective Date of Capital Reduction: 2026/04/30 12. Other matters to be disclosed: None.