CHT Corporation Announces Disposal of Securities

1. Security Name: Nanya Technology Common Stock

2. Transaction Date: 2026/07/31 ~ 2026/08/03

3. Board Approval Date: Not applicable

4. Other Approval Dates: Approval Level: Approved by Chairman Approved on August 3, 2026 (Minguo Year 115)

5. Transaction Quantity, Unit Price, and Total Amount: Quantity (in thousands of shares): 880 Unit Price (NT$): 378.59 Total Transaction Amount (NT$): 333,158,528

6. Gain (or Loss) on Disposal (not applicable for acquisition of securities): Loss on disposal: NT$27,094,224

7. Relationship with the Target Company: None

8. Cumulative Holdings of the Security (including this transaction) to Date, Including Quantity, Value, Ownership Percentage, and Restricted Rights (e.g., Pledge Status): Remaining Holdings: 5,689,000 shares, Value: NT$2,328,952,191 Ownership Percentage: 0.165%, Rights Restrictions: None

9. Proportion of Securities Investments (including this transaction) Listed Under Article 3 of the 'Asset Acquisition and Disposal Regulations for Publicly Issued Companies' to Total Assets and Equity Attributable to Owners of the Parent in the Company's Latest Financial Statements, and the Amount of Working Capital in the Latest Financial Statements: Percentage of Total Assets: 83.49% Percentage of Equity Attributable to Owners of the Parent: 119.91% Working Capital Amount: 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 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: On June 30, 2026 (Minguo Year 115), authorized traders were granted permission to conduct securities transactions on the centralized market during the third quarter of 2026.