CHT announced disposal of securities in Nanya Technology

1. Security Name: Nanya Technology Ordinary Shares

2. Transaction Date: 2026/7/9 ~ 2026/7/9

3. Board Approval Date: Not applicable

4. Other Approval Date: Approval Level: Approved by Chairman July 9, 2026 (Minguo Year 115)

5. Transaction Quantity, Unit Price, and Total Amount: Quantity (in thousands of shares): 980 Unit Price (NT$): 424.55 Total Transaction Amount (NT$): 416,061,176

6. Disposal Gain (or Loss) (not applicable for acquisition of securities): Disposal Loss: NT$5,572,014

7. Relationship with the Target Company: None

8. Cumulative Holdings to Date (including this transaction) of the securities involved: Remaining Holdings: 3,116,000 shares, Amount: NT$1,344,819,101 Ownership Ratio: 0.09%, Restricted Rights (e.g., pledge status): None

9. Proportion of securities investments (including this transaction) under Article 3 of the 'Asset Acquisition and Disposal Regulations for Publicly Issued Companies' relative to total assets and equity attributable to owners of the parent in the latest financial statements, and operating capital: Percentage of Total Assets: 86.37% Percentage of Equity Attributable to Owners of the Parent: 124.04% Operating Capital: NT$8,285,327 thousand

10. Specific Purpose of Acquisition or Disposal: Portfolio management

11. Dissenting Director Opinions on this Transaction: None

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

13. Counterparty and Relationship with the Company: Not applicable

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

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

16. Other Disclosures: On June 30, 2026, authorized trading personnel were granted authority to conduct securities transactions on the centralized market during Q3 2026 (Minguo Year 115).