[CMC] Announcement of Disposal of Securities

1. Name of securities:
TSMC Common Shares

2. Trading period: May 21, 2026 ~ June 5, 2026

3. Date of Board of Directors resolution: Not applicable

4. Other approval dates:
Approval level: Chairman approval
June 5, 2026

5. Trading volume, unit price, and total transaction amount:
Trading volume (thousand shares): 132
Unit price (NTD): 2,346.24
Total transaction amount (NTD): 309,703,442

6. Gain (or loss) on disposal (not applicable for acquisition of securities):
Gain on disposal: NTD 18,511,620

7. Relationship with the underlying company:
None

8. Cumulative number, amount, shareholding ratio of the traded securities held to date (including this transaction), and status of restricted rights (e.g., pledge):
Remaining balance: 208,000 shares, Amount: NTD 456,351,117
Shareholding ratio: 0.001%, Status of restricted rights: None

9. Ratio of securities investment (including this transaction) listed in Article 3 of the "Regulations Governing the Acquisition and Disposal of Assets by Public Companies" to total assets and equity attributable to owners of the parent in the most recent financial statements, and the amount of working capital in the most recent financial statements:
Ratio to total assets: 79.64%
Ratio to equity attributable to owners of the parent: 114.38%
Amount of working capital: NTD 8,285,327 thousand

10. Specific purpose of acquisition or disposal:
Investment portfolio

11. Dissenting opinions of directors on this transaction:
None

12. Is this transaction a related party transaction:
No

13. Counterparty to the transaction and its relationship with the company:
Not applicable

14. Date of approval by supervisors or consent by the audit committee:
Not applicable

15. Date of previous announcement of material information regarding the same event: Not applicable

16. Other explanatory matters:
Authorized traders were approved on March 31, 2026, to conduct securities trading in the centralized trading market during the second quarter of 2026.