【Central Circular】Announcement of the Company's Acquisition of Securities

1. Securities Name: TSMC Common Stock 2. Transaction Date: 2026/3/16 ~ 2026/4/17 3. Board of Directors Approval Date: Not applicable 4. Other Approval Dates: Approval Level: Chairman's approval April 17, 2026 5. Transaction Volume, Price per Unit, and Total Transaction Amount: Transaction Volume (thousand shares): 190 Price per Unit (JPY): 1,898.08 Total Transaction Amount (JPY): 360,636,113 6. Gain (or Loss) on Disposal (Not applicable for acquisition of securities): Not applicable 7. Relationship with the Company whose securities were traded: None 8. As of now, the accumulated quantity, amount, shareholding ratio, and restricted rights (e.g., pledge status) of this traded security (including this transaction) held: Remaining holdings: 170,000 shares, Amount: 308,294,406 JPY Shareholding ratio: 0.0007%, Restricted rights: None 9. As of now, the investment in securities (including this transaction) listed in Article 3 of the "Regulations Governing the Acquisition or Disposal of Assets by Public Companies" as a percentage of the company's latest financial report's total assets and equity attributable to owners of the parent company, and the amount of working capital in the latest financial report: Percentage of total assets: 76.32% Percentage of equity attributable to owners of the parent company: 106.90% Working capital amount: 8,285,327 thousand JPY 10. Specific Purpose of Acquisition or Disposal: Investment Portfolio 11. Opinions of dissenting 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 Audit Committee: Not applicable 15. Date of previous material information announcement regarding the same event: Not applicable 16. Other explanatory matters: Authorization was given on March 31, 2026, for authorized traders to conduct securities transactions in the centralized trading market during the second quarter of 2026.