[TSMC] Announcement of Fixed-Income Security Acquisition by Subsidiary TSMC Global Ltd.

1. Name of Security: Corporate Bond 2. Transaction Date: May 20, 2026 3. Date of Board Approval: N/A 4. Date of Other Approval: May 20, 2026 5. Quantity, Unit Price, and Total Amount: Total of $70.2 million USD across multiple instruments. 6. Profit/Loss on Disposal: N/A 7. Relationship with Target: None 8. Cumulative Holdings: N/A 9. Investment Ratio: 6.01% of total assets; 7.43% of equity attributable to owners of the parent. 10. Purpose: Fixed-income investment 11. Objections: N/A 12. Related Party Transaction: No 13. Relationship with Counterparty: N/A 14. Date of Audit Committee Approval: N/A 15. Date of Previous Material Announcement: N/A 16. Other: None