[科嘉-KY] Subsidiary Group Accumulates 20% of Paid-in Capital in Bond Repo Transactions within One Year

1. Security Name: Shanghai Stock Exchange One-Day Treasury Bond Reverse Repo GC001, Code 204001 2. Transaction Date: 2026/05/21 3. Board Approval Date: Not applicable 4. Other Authorization Date: Chairman authorization, 2026/05/21 5. Transaction Volume, Unit Price, and Total Amount: - Aipulai: 83,800 units, avg price: 1.320% - Baihong: 107,040 units, avg price: 1.320% - Jiacai: 530,420 units, avg price: 1.320% - Jiahuang: 231,060 units, avg price: 1.320% - Jiaji: 117,840 units, avg price: 1.320% - Kede: 374,800 units, avg price: 1.330% - Jiajun: 377,200 units, avg price: 1.320% - Total amount: 182,216,000 RMB (approx. 839,816,000 NTD) 6. Gain/Loss on Disposal: Not applicable 7. Relationship with Target: Not a related party 8. Accumulated Holdings: No pledge 9. Investment Ratio: 16.88% of total assets, 23.50% of shareholders' equity, working capital: 2,612,388,000 NTD 10. Purpose: Investment 11. Dissenting Opinion: None 12. Related Party Transaction: No 13. Counterparty Relationship: Not applicable 14. Audit Committee Approval: Not applicable 15. Prior Significant Announcements: Not applicable 16. Other Matters: None