2330 TSMC: Announcement of Ex-Dividend Date for Q2 2026 Cash Dividend

Release Date: 1150812 Statement Date: 1150811 Statement Time: 190129 Company Code: 2330 Company Name: TSMC Subject: Establishment of the Ex-Dividend Trading Date for the Second Quarter 2026 Cash Dividend Relevant Clause: Clause 14 Event Date: 1150811 Details: 1. Date of Board, Shareholders' Meeting Resolution, or Company Decision: 115/08/11 2. Type of Rights/Dividend Adjustment (please enter 'Rights', 'Dividend', or 'Rights & Dividend'): Dividend 3. Type and Amount of Ordinary Share Dividend Distribution: Cash Dividend of NT$181,526,590,469 (NT$7.0 per share) 4. Ex-Rights (Dividend) Trading Date: 115/12/10 5. Final Transfer Date: 115/12/11 6. Start Date of Transfer Suspension: 115/12/12 7. End Date of Transfer Suspension: 115/12/16 8. Ex-Rights (Dividend) Benchmark Date: 115/12/16 9. Last Application Date for Bond Conversion: Not Applicable 10. Start Date of Bond Conversion Suspension: Not Applicable 11. End Date of Bond Conversion Suspension: Not Applicable 12. Ordinary Share Cash Dividend Payment Date: 116/01/07 13. Whether Part or All of the Cash Dividend is Paid in Foreign Currency (enter 'Yes' or 'No'): Yes 14. Foreign Currency for Cash Dividend Payment: US Dollar (USD) 15. Recipients of Foreign Currency Cash Dividend: According to Financial Supervisory Commission Securities and Futures No. 1150381112, overseas overseas Chinese and foreign individuals who invest in domestic securities under the 'Regulations Governing the Investment by Overseas Chinese and Foreign Nationals in Securities' 16. Method for Determining Foreign Currency Dividend Exchange Rate: The exchange rate shall be based on the USD to TWD transaction rate at 11:00 AM on the Friday of the week preceding the dividend payment date, as quoted by Taipei Foreign Exchange Brokers Co., Ltd. (if the date falls on a holiday, it will be moved forward to the previous business day) 17. Other Matters to be Disclosed: (1) The ex-dividend trading date and dividend benchmark date for the American Depositary Receipts (ADRs) listed on the New York Stock Exchange (NYSE) in the United States are both December 10, 2026.

(2) Overseas overseas Chinese and foreign shareholders must register through their custodian institutions with China Trust, the company's share transfer agent, to elect receipt of dividends in either USD or TWD. Shareholders who fail to complete currency selection before the deadline set by the custodian institution, or who submit conflicting currency preferences under the same account number, will have their dividend currency automatically set to USD.

(3) According to Financial Supervisory Commission Securities and Futures No. 1150381112, custodian institutions will collect the USD cash dividends on behalf and remit them to the designated offshore or domestic foreign currency deposit accounts of overseas Chinese and foreign shareholders.