[TSMC] Our Company Sets Ex-dividend Trading Date for Q1 2026 Cash Dividend

1. Date of board of directors' resolution, shareholders' meeting resolution, or company decision: 2026/05/12 2. Type of ex-rights/ex-dividend (please fill in “ex-rights”, “ex-dividend” or “ex-rights and ex-dividend”): Ex-dividend 3. Type and amount of common stock dividends distributed: Cash dividend NT$181,526,590,469 (NT$7.0 per share) 4. Ex-rights (ex-dividend) trading date: 2026/09/16 5. Last date for registration transfer: 2026/09/17 6. Book closure start date: 2026/09/18 7. Book closure end date: 2026/09/22 8. Ex-rights (ex-dividend) record date: 2026/09/22 9. Last date for bond conversion application: Not applicable 10. Bond conversion suspension start date: Not applicable 11. Bond conversion suspension end date: Not applicable 12. Common stock cash dividend payment date: 2026/10/08 13. Other matters that should be specified: The ex-dividend trading date and record date for the company's American Depositary Receipts listed on the New York Stock Exchange are both September 16, 2026.