[TSMC] Announcement regarding acquisition of fixed-income securities by subsidiary TSMC Global Ltd.

1. Name of securities: Corporate Bonds. 2. Transaction date: May 21, 2026. 3. Date of Board of Directors approval: Not applicable. 4. Date of other decision-making: Not applicable. 5. Transaction quantity, unit price, and total amount: 46647PEP7: 150,000 units; US$100.02 per unit; total amount US$15 million. 6. Gain (or loss) on disposal: Not applicable. 7. Relationship with the issuer: None. 8. Cumulative holdings to date (including this transaction): 46647PEP7: 250,000 units; US$25 million; Shareholding ratio: Not applicable; Encumbrance: None. 9. Ratio of investments in securities as defined by Article 3 of the 'Regulations Governing the Acquisition and Disposal of Assets by Public Companies' (including this transaction) to total assets and equity attributable to owners of the parent in the latest financial statements, and working capital in the latest financial statements: 5.98%; 7.39%; NT$325,002 million. 10. Purpose of acquisition or disposal: Fixed-income investment. 11. Opinion of dissenting directors: Not applicable. 12. Whether it is a related party transaction: No. 13. Transaction counterparty and relationship with the company: Not applicable. 14. Date of approval by supervisors or audit committee: Not applicable. 15. Date of previous major message release on the same subject: Not applicable. 16. Other notes: None.