【Kojia-KY】Announcement by Subsidiaries Suzhou Jiaji/Kede/Jiacai/Aipulai/Baihong/Jiahuang/Jiajun on Cumulative Disposal of Same Securities Exceeding 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: 115/5/11~115/5/11 (May 11, 2026) 3. Date of Board of Directors' Approval: Not applicable 4. Other Approval Dates: Approval Level: Chairman's approval May 11, 2026 (ROC calendar) 5. Transaction Volume, Unit Price, and Total Transaction Amount: Aipulai: 83,770 units, average price: 1.285% Baihong: 109,000 units, average price: 1.290% Jiacai: 595,240 units, average price: 1.285% Jiahuang: 145,990 units, average price: 1.290% Jiaji: 123,750 units, average price: 1.283% Kede: 375,690 units, average price: 1.295% Jiajun: 341,470 units, average price: 1.288% Total amount: RMB 177,497 thousand (approximately NTD 818,068 thousand) 6. Disposal Profit (or Loss) (Not applicable for acquisition of securities): Disposal profit RMB 6 thousand 7. Relationship with the Transacting Company: Non-related party 8. As of now, the quantity, amount, shareholding ratio, and restricted rights (e.g., pledges) of the accumulated securities (including this transaction): Suzhou Aipulai: None Suzhou Baihong: None Suzhou Jiacai Electronics: None Suzhou Jiahuang Electronics: None Suzhou Jiaji Electronics: None Suzhou Kede: None Chongqing Jiajun: None Pledge status: None 9. As of now, the proportion of securities investments (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: 16.44% Proportion of shareholder equity: 22.89% Working capital: NTD 2,612,388 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 Material Information Announcement on the Same Event: Not applicable 16. Other Matters to be Stated: None