[TSMC] Notification of Attendance at Institutional Investor Conference

Compliance with Article 4, Section XX: 12

Date of occurrence: 2026/05/26

1. Date of Investor Conference: 2026/05/26 ~ 2026/05/27 2. Time of Investor Conference: 08:00 AM 3. Location of Investor Conference: FOUR SEASONS HOTEL HONG KONG 4. Summary of Investor Conference Information: Our company has been invited to attend the 'Asian Investment Conference 2026' hosted by UBS Securities. During the conference, we will explain financial figures and operating performance information that have already been disclosed at our April 16 earnings call. 5. Other Matters to be stated: None.

For complete financial and business information, please check the 'Investor Conference' list or section on the Market Observation Post System.