Casetek Holdings (5215) Announces Cumulative Disposal of Securities by Subsidiaries Reaches 20% of Paid-in Capital

Report Date: 2026/05/21 Spokesperson Date: 2026/05/20 Spokesperson Time: 17:40:20 Company Code: 5215 Company Name: Casetek-KY Subject: Announcement on behalf of subsidiaries Suzhou Jiaji/Kede/Jiacai/Aipulai/Baihong/Jiahuang/Jiajun regarding the cumulative disposal of the same securities within one year reaching 20% of the paid-in capital. Applicable Clause: Article 20 Date of Occurrence: 2026/05/20 Explanation: 1. Security Name: Shanghai Stock Exchange 1-day government bond reverse repo GC001, code 204001 2. Transaction Date: 2026/5/20~2026/5/20 3. Board of Directors Approval Date: Not applicable 4. Other Approval Date: Approval Level: Chairman's approval, May 20, 2026 (ROC Year 115) 5. Transaction quantity, price per unit, and total transaction amount: Aipulai: 83,790 units, avg. price: 1.365% Baihong: 107,030 units, avg. price: 1.370% Jiacai: 530,380 units, avg. price: 1.370% Jiahuang: 231,040 units, avg. price: 1.375% Jiaji: 117,830 units, avg. price: 1.385% Kede: 345,780 units, avg. price: 1.375% Jiajun: 341,750 units, avg. price: 1.370% Total Amount: 175,767 thousand RMB (approx. 810,092 thousand NTD) 6. Gain (or loss) on disposal: Gain on disposal of RMB 6 thousand 7. Relationship with the counterparty: Non-related party 8. Cumulative holding of this security to date (including this transaction): None for all subsidiaries. 9. As of now, the ratio of securities investment (including this transaction) under Article 3 of the 'Regulations Governing the Acquisition and Disposal of Assets by Public Companies' to the total assets and equity attributable to owners of the parent in the most recent financial statements, and the amount of working capital in the most recent financial statements: Ratio to total assets: 16.28% Ratio to shareholders' equity: 22.67% Working capital: 2,612,388 thousand NTD