【Kojaden-KY】Announcement by subsidiaries Suzhou Jiaji/Kede/Jiacai/Aipulai/Baihong/Jiahuang/Jiajun regarding cumulative acquisition of the same marketable securities reaching 20% of paid-in capital within one year

1. Securities name: Shanghai Stock Exchange one-day national debt reverse repurchase GC001, code 204001 2. Transaction date: 2026/4/23~2026/4/23 3. Date of board resolution: Not applicable 4. Other approval dates: Approval level: Chairman's approval April 23, 2026 (ROC calendar) 5. Transaction quantity, unit price, and total transaction amount: Aipulai: 55,420 units, average price: 1.340% Baihong: 104,940 units, average price: 1.340% Jiacai: 677,880 units, average price: 1.340% Jiahuang: 163,900 units, average price: 1.340% Jiaji: 117,680 units, average price: 1.340% Kede: 468,460 units, average price: 1.340% Jiajun: 361,300 units, average price: 1.340% Total amount: 194,958 thousand yuan (approximately NT$927,483 thousand) 6. Disposal profit (or loss) (not applicable for acquisition of marketable securities): Not applicable 7. Relationship with the transaction target company: Non-related party 8. As of now, the quantity, amount, shareholding ratio, and restricted rights (e.g., pledge status) of the cumulative holding of these transaction securities (including this transaction): Aipulai: 55,420 units, average price: 1.340% Baihong: 104,940 units, average price: 1.340% Jiacai: 677,880 units, average price: 1.340% Jiahuang: 163,900 units, average price: 1.340% Jiaji: 117,680 units, average price: 1.340% Kede: 468,460 units, average price: 1.340% Jiajun: 361,300 units, average price: 1.340% Pledge status: None 9. As of now, the proportion of marketable securities investment (including this transaction) listed in Article 3 of the "Regulations Governing the Acquisition or Disposal of Assets by Public Companies" to the total assets and equity attributable to owners of the parent company in the company's most recent financial report, and the amount of working capital in the most recent financial report: Proportion of total assets: 19.63% Proportion of shareholders' equity: 26.06% Working capital: NT$2,515,979 thousand 10. Specific purpose of acquisition or disposal: Investment and financial management 11. Opinions of directors who expressed dissent to this transaction: None 12. Is this transaction a related party transaction: No 13. Counterparty of the transaction and its relationship with the company: Not applicable 14. Date of approval by supervisors or audit committee: Not applicable 15. Date of previous material information announcement regarding the same event: Not applicable 16. Other matters to be specified: Not applicable