Ko-Chia-KY Announces Cumulative Disposal of Securities by Subsidiaries Exceeding 20% of Paid-in Capital

1. Security Name: One-day Government Bond Reverse Repo GC001, code 204001, listed on the Shanghai Stock Exchange

2. Transaction Date: July 20, 2026 (Minguo Year 115)

3. Transaction Quantity, Unit Price, and Total Amount: - Aiplai: 83,980 units, average rate: 1.182% - Baihong: 102,650 units, average rate: 1.205% - Jiacai: 397,400 units, average rate: 1.175% - Jiahuang: 210,030 units, average rate: 1.180% - Jiagii: 120,100 units, average rate: 1.175% - Kode: 207,340 units, average rate: 1.180% - Jiajun: 355,910 units, average rate: 1.162%

Total Transaction Amount: NT$147,746 thousand (approximately NT$691,334 thousand)

4. Disposal Gain (or Loss): Gain of RMB 5,000

5. Relationship with Counterparty: Non-related party

6. Cumulative Holdings (Including This Transaction): - Suzhou Aiplai: None - Suzhou Baihong: None - Suzhou Jiacai Electronics: None - Suzhou Jiahuang Electronics: None - Suzhou Jiagii Electronics: None - Suzhou Kode: None - Chongqing Jiajun: None

Pledge Status: None

7. Financial Ratios (Including This Transaction) as per 'Asset Acquisition and Disposal Rules for Publicly Issued Companies', Article 3: - Ratio to Total Assets: 13.89% - Ratio to Equity Attributable to Owners of Parent: 19.35% - Working Capital: NT$2,612,388 thousand

8. Purpose of Acquisition or Disposal: Investment and financial management

9. Board Approval Date: Not applicable

10. Approval by Chairman: Approved by Chairman on July 20, Minguo Year 115 (2026)

11. Audit Committee or Supervisor Approval Date: Not applicable

12. Related-Party Transaction: No

13. Counterparty and Relationship with Company: Not applicable

14. Prior Material Information Disclosure on Same Event: Not applicable

15. Other Remarks: None