【KAIJIA-KY】Subsidiaries Suzhou Kaijia/Kede/Jiacai/Aipulai/Baihong/Jiahuang/Jiajun Announce Cumulative Acquisition of Same Securities Reaching 20% of Paid-in Capital Within One Year

1. Securities Name: Shanghai Stock Exchange 1-day reverse repurchase agreement GC001, code 204001 2. Transaction Date: 2026/4/9~2026/4/9 3. Board of Directors Approval Date: Not applicable 4. Other Approval Date: Approval level: Chairman's approval, April 9, 2026 (Republic of China calendar 115) 5. Transaction Quantity, Unit Price, and Total Transaction Amount: Aipulai: 55,400 units, average price: 1.400% Baihong: 104,890 units, average price: 1.400% Jiacai: 1,124,330 units, average price: 1.400% Jiahuang: 169,820 units, average price: 1.400% Kaijia: 122,610 units, average price: 1.400% Kede: 460,230 units, average price: 1.400% Jiajun: 336,410 units, average price: 1.400% Total amount: 237,369 thousand yuan (approximately NT$1,129,247 thousand) 6. Disposal Profit (or Loss) (Not applicable for acquisition of securities): Not applicable 7. Relationship with the Transacting Company: Non-related party 8. As of now, the quantity, amount, shareholding ratio, and restricted rights (e.g., pledge status) of the accumulated holding of these securities (including this transaction): Aipulai: 55,400 units, average price: 1.400% Baihong: 104,890 units, average price: 1.400% Jiacai: 1,124,330 units, average price: 1.400% Jiahuang: 169,820 units, average price: 1.400% Kaijia: 122,610 units, average price: 1.400% Kede: 460,230 units, average price: 1.400% Jiajun: 336,410 units, average price: 1.400% Pledge status: None 9. As of now, the proportion of 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: 23.90% Proportion of shareholders' equity: 31.73% Working capital: NT$2,515,979 thousand 10. Specific Purpose of Acquisition or Disposal: Investment and financial management 11. Opinions of Dissenting Directors on this Transaction: None 12. This Transaction is a Related Party Transaction: No 13. Counterparty and its Relationship with the Company: Not applicable 14. Date of Approval by Supervisors or Audit Committee: Not applicable 15. Date of Previous Major Announcement on the Same Event: Not applicable 16. Other Explanations: None