CTCI Board of Directors Resolves to Set Capital Reduction Record Date for Cancellation of Repurchased Restricted Employee Shares

1. Date of Board of Directors' resolution: 2026/05/12 2. Reason for capital reduction: Repurchase and cancellation of restricted employee shares without compensation in accordance with Article 3 of the issuance regulations. 3. Capital reduction amount: NTD 10,718,390 4. Shares to be cancelled: 1,071,839 shares 5. Capital reduction ratio: 0.113% 6. Capital after reduction: NTD 9,444,370,340 7. Scheduled date of shareholder meeting: Not applicable 8. Estimated number of listed common shares after capital reduction: Not applicable 9. Ratio of estimated listed common shares after capital reduction to total outstanding common shares (listed common shares after reduction / total outstanding common shares after reduction): Not applicable 10. If the estimated number of listed common shares after capital reduction (items 8 and 9) is less than 60 million shares and less than 25%, please explain countermeasures for low stock liquidity: Not applicable 11. Capital reduction record date: 2026/05/25 12. Other matters to be specified: None