CHT Corporation Announces Disposal of Securities

1. Security Name: Nanya Technology Common Stock

2. Transaction Date: 2026/06/25 ~ 2026/06/25

3. Board Approval Date: Not applicable

4. Other Approval Dates: Approval Level: Approved by Chairman June 25, 2026 (R.O.C. Year 115)

5. Transaction Quantity, Unit Price, and Total Amount: Quantity (in thousands of shares): 860 Unit Price (NT$): 472.88 Total Transaction Amount (NT$): 406,677,182

6. Gain (or Loss) from Disposal (not applicable for acquisition of securities): Disposal Gain: NT$14,074,821

7. Relationship with the Target Company: None

8. Cumulative Holdings of the Security (including this transaction) to Date: Remaining Holdings: 1,254,000 shares, Amount: NT$566,198,126 Ownership Percentage: 0.04%, Rights Restrictions (e.g., pledge): None

9. Proportion of Securities Investments (including this transaction) under Article 3 of the 'Asset Acquisition and Disposal Rules for Publicly Issued Companies' relative to Total Assets and Equity Attributable to Owners of Parent in the Most Recent Financial Statements, and Operating Capital: Percentage of Total Assets: 82.20% Percentage of Equity Attributable to Owners of Parent: 118.06% 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 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: On March 31, 2026, authorized traders were granted authority to conduct securities transactions in the centralized market during the second quarter of 2026.