[TSMC] Announcement by the Company on behalf of its subsidiary TSMC Global Ltd. Regarding the Acquisition of Fixed Income Securities

1. Security Name: Corporate Bonds. 2. Transaction Date: 2026/5/7 ~ 2026/5/7 3. Date of Board of Directors' Resolution: Not applicable 4. Other Approval Dates: Approval level: Not applicable May 7, 2026 5. Transaction Quantity, Unit Price, and Total Transaction Amount: 46647PEL6: 100,000 units; US$100.72 per unit; total amount US$10.1 million. 38141GZK3: 100,000 units; US$98.64 per unit; total amount US$9.9 million. 6. Disposal Gain (or Loss) (Not applicable for acquisition of marketable securities): Not applicable 7. Relationship with the Counterparty: None. 8. As of the current date, the accumulated quantity, amount, shareholding ratio, and restricted rights (e.g., pledges) of this transaction's securities (including this transaction) are: 46647PEL6: 530,000 units; US$53.4 million; shareholding ratio: Not applicable; restricted rights: None. 38141GZK3: 4,195,700 units; US$414.1 million; shareholding ratio: Not applicable; restricted rights: None. 9. As of the current date, the proportion of investment in marketable securities (including this transaction) as listed in Article 3 of the "Regulations Governing the Acquisition or Disposal of Assets by Public Companies" to the company's most recent financial report's total assets and equity attributable to owners of the parent, as well as the working capital amount in the most recent financial report: 6.02%; 8.08%; NT$325,002 million. 10. Specific Purpose of Acquisition or Disposal: Fixed income investment. 11. Opinions of Dissenting Directors on this Transaction: Not applicable 12. This transaction is a related party transaction: No 13. Transaction Counterparty and its Relationship with the Company: Not applicable 14. Date of Approval by Supervisors or Audit Committee: Not applicable 15. Date of previous material information disclosure for the same event: Not applicable 16. Other Explanatory Matters: None.