CHT Corporation Announces Disposal of Securities

1. Security Name: Nanya Technology Corporation Common Stock

2. Transaction Date: 2026/06/26 ~ 2026/06/26

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 Amount: Transaction Quantity (in thousands of shares): 960 Unit Price (NT$): 478.05 Total Transaction Amount (NT$): 458,923,842

6. Gain (or Loss) on Disposal (not applicable for acquisition of securities): Gain on disposal: NT$22,752,450

7. Relationship with the Target Company: None

8. Cumulative Holdings of the Subject Securities (including this transaction) to Date – Quantity, Amount, Ownership Percentage, and Restricted Rights (e.g., pledged): Remaining Holdings: 2,294,000 shares, Amount: NT$1,058,528,825 Ownership Percentage: 0.07%, Rights Restrictions: None

9. Proportion of Securities Investments (including this transaction) under Article 3 of the 'Asset Acquisition and Disposal Rules 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: 85.18% Percentage of Equity Attributable to Owners of the Parent: 122.34% Working Capital Amount: NT$8,285,327,000

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 Disclosures: Authorized designated traders on March 31, 2026 (Minguo Year 115) to conduct securities transactions in the centralized market during the second quarter of 2026.