CHTBC Announces Disposal of Securities

1. Security Name: TSMC Common Stock

2. Transaction Date: 2026/7/8 ~ 2026/7/20

3. Board Approval Date: Not applicable

4. Other Approval Date: Approval Level: Approved by Chairman July 20, 2026 (ROC Year 115)

5. Transaction Quantity, Unit Price, and Total Amount: Quantity (in thousands of shares): 175 Unit Price (NT$): 2,399.39 Total Transaction Amount (NT$): 419,893,244

6. Gain (or Loss) on Disposal (not applicable for acquisition of securities): Gain on Disposal: NT$5,087,979

7. Relationship with the Target Company: None

8. Cumulative Holdings (including this transaction) to Date: Remaining Holdings: 135,000 shares, Amount: NT$318,551,431 Ownership Percentage: 0.0005%, Restricted Rights (e.g., pledged): 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 most recent financial statements, and the amount of working capital: Percentage of Total Assets: 86.82% Percentage of Equity Attributable to Owners of the Parent: 124.70% 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 Relationship with the Company: Not applicable

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

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

16. Other Disclosures: On June 30, 2026, authorized traders were granted authority to conduct securities transactions on the centralized market during the third quarter of 2026 (ROC Year 115).