Chung Hsin Announces Acquisition of Securities

1. Security Name: TSMC Common Stock

2. Transaction Date: 115/7/22~115/7/24

3. Board Approval Date: Not applicable

4. Other Approval Dates: Approval Level: Approved by Chairman July 24, 2026 (Minguo Year 115)

5. Transaction Quantity, Unit Price, and Total Amount: Transaction Quantity (in thousands of shares): 135 Unit Price (NT$): 2,391.52 Total Transaction Amount (NT$): 322,855,850

6. Gain (or Loss) on Disposal (Not applicable for acquisition of securities): Not applicable

7. Relationship with the Target Company: None

8. Cumulative Holdings of the Subject Securities (including this transaction) to Date – Quantity, Amount, Ownership Percentage, and Restrictions (e.g., Pledging): Holding Balance: 170,000 shares, Amount: NT$404,556,619 Ownership Percentage: 0.0007%, 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 Most Recent Financial Statements, and the Amount of Working Capital in the Most Recent Financial Statements: Percentage of Total Assets: 85.89% Percentage of Equity Attributable to Owners of the Parent: 123.35% Working Capital Amount: NT$8,285,327 thousand

10. Specific Purpose of Acquisition or Disposal: Investment Portfolio

11. Dissenting Directors' 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's Approval or Audit Committee's 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 in the centralized market during the third quarter of 2026.