TSMC: Announcement by the Company on behalf of its Subsidiary TSMC Global Ltd. on the Acquisition of Fixed Income Securities

1. Security Name: Corporate Bonds. 2. Transaction Date: 2026/3/30~2026/4/8 3. Board Approval Date: Not applicable 4. Other Approval Date: Not applicable; April 8, 2026 5. Transaction Quantity, Price per Unit, and Total Transaction Amount: 172967LP4: 300,000 units; US$98.95 per unit; Total amount US$29.7 million. 38141GWL4: 150,000 units; US$99.08 per unit; Total amount US$14.9 million. 172967LS8: 100,000 units; US$98.59 per unit; Total amount US$9.9 million. 6. Disposal Profit (or Loss) (Not applicable for acquisition of securities): Not applicable 7. Relationship with the Transacted Company: None. 8. As of now, accumulated holdings of these securities (including this transaction): 172967LP4: 1,371,250 units; US$135.9 million; Shareholding Ratio: Not applicable; Encumbrance Status: None. 38141GWL4: 650,000 units; US$64.6 million; Shareholding Ratio: Not applicable; Encumbrance Status: None. 172967LS8: 200,000 units; US$19.7 million; Shareholding Ratio: Not applicable; Encumbrance Status: None. 9. As of now, the proportion of securities investment (including this transaction) listed in Article 3 of the "Regulations Governing the Acquisition or Disposal of Assets by Public Companies" to the company's total assets and equity attributable to owners of the parent in the latest financial report, and the amount of working capital in the latest financial report: 6.16%; 8.27%; 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. 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 announcement regarding the same event: Not applicable 16. Other explanatory matters: None.