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

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

2. Transaction Date: June 26, 2026 ~ June 26, 2026

3. Board Approval Date: Not applicable

4. Other Approval Dates:
Approval Level: Approved by Chairman
June 26, 2026 (Minguo Year 115)

5. Transaction Quantity, Unit Price, and Total Transaction Amount:
Aiplai: 86,400 units, average rate: 1.475%,
Baihong: 70,560 units, average rate: 1.470%,
Jiacai: 386,020 units, average rate: 1.470%,
Aiplai: 195,340 units, average rate: 1.470%,
Jiachi: 115,990 units, average rate: 1.475%,
Kede: 189,160 units, average rate: 1.475%,
Jiashun: 327,280 units, average rate: 1.475%,
Total Amount: NT$137,092 thousand (approximately NT$630,585 thousand)

6. Gain (or Loss) from Disposal (not applicable for acquisition):
Disposal gain: RMB 16 thousand

7. Relationship with the Counterparty Company:
Unrelated party

8. Cumulative Holdings of the Subject Security (including this transaction) to Date in Quantity, Amount, Ownership Percentage, and Restricted Rights (e.g., Pledge Status):
Suzhou Aiplai: None
Suzhou Baihong: None
Suzhou Jiacaielectron: None
Suzhou Jiawangelectron: None
Suzhou Jiachielectron: None
Suzhou Kede: None
Chongqing Jiashun: None
Pledge Status: None

9. Cumulative Securities Investment (including this transaction) under Article 3 of the 'Asset Acquisition and Disposal Rules for Publicly Issued Companies' as a Percentage of Total Assets and Equity Attributable to Owners of the Parent in the Most Recent Financial Statements, and the Working Capital Amount in the Most Recent Financial Statements:
Percentage of Total Assets: 12.67%
Percentage of Shareholders' Equity: 17.65%
Working Capital: NT$2,612,388 thousand

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