Ko-Chia KY Announces Cumulative Disposal of Securities Reaching 20% of Paid-in Capital within One Year via Subsidiaries

1. Security Name: 1-day Government Bond Reverse Repo (GC001), Shanghai Stock Exchange, Code 204001

2. Transaction Date: July 22, 2026 (Minguo Year 115)

3. Board Approval Date: Not applicable

4. Other Approval Date: Approval Level: Approved by Chairman July 22, Minguo Year 115 (2026)

5. Transaction Quantity, Unit Price, and Total Amount: - Aipulai: 83,990 units, average rate: 1.435%, - Baihong: 102,660 units, average rate: 1.435%, - Jiacai: 410,430 units, average rate: 1.435%, - Jiahuang: 210,050 units, average rate: 1.440%, - Jiaji: 120,110 units, average rate: 1.440%, - Kede: 207,350 units, average rate: 1.445%, - Jiajun: 381,160 units, average rate: 1.435%,

Total Transaction Amount: NT$709,280,000 (approximately RMB 151,581,000)

6. Gain (or Loss) from Disposal (not applicable for acquisition): Disposal gain: RMB 6,000

7. Relationship with Counterparty Company: Unrelated party

8. Cumulative Holdings of the Security (including this transaction) to Date – Quantity, Amount, Holding Percentage, and Restrictions (e.g., Pledging): - Suzhou Aipulai: None - Suzhou Baihong: None - Suzhou Jiacai Electronics: None - Suzhou Jiahuang Electronics: None - Suzhou Jiaji Electronics: None - Suzhou Kede: None - Chongqing Jiajun: None

Pledging Status: None

9. Cumulative Securities Investments under Article 3 of the 'Regulations on Acquisitions and Dispositions of Assets by Publicly Issued Companies' (including this transaction), as a percentage of total assets and equity attributable to owners of the parent in the latest financial statements, and the amount of working capital: - Percentage of Total Assets: 14.25% - Percentage of Shareholders' Equity: 19.85% - Working Capital: NT$2,612,388,000

10. Specific Purpose of Acquisition or Disposal: Investment and financial management

11. Dissenting Director's Opinion on This Transaction: None

12. Whether This Transaction is a Related-Party Transaction: No

13. Counterparty and Its Relationship with the Company: Not applicable

14. Date of Supervisor Approval or Audit Committee Consent: Not applicable

15. Previous Date of Material Information Disclosure on the Same Event: Not applicable

16. Other Explanatory Matters: None