[TSMC] Announcement on behalf of subsidiary TSMC Global Ltd. regarding the acquisition of fixed-income securities

1. Name of the security: Corporate bonds. 2. Date of transaction: 2026/4/13~2026/4/17 3. Date of Board of Directors' approval: Not applicable 4. Date of other approval: Level of approval: Not applicable April 17, 2026 5. Quantity of transaction, price per unit, and total transaction amount: 38141GZU1: 310,000 units; US$100.13 per unit; total amount US$31.0 million. 61747YEV3: 100,000 units; US$102.75 per unit; total amount US$10.3 million. 38141GC77: 100,000 units; US$100.50 per unit; total amount US$10.1 million. 38141GWL4: 100,000 units; US$99.24 per unit; total amount US$9.9 million. 6. Disposal profit (or loss) (not applicable to the acquisition of securities): Not applicable 7. Relationship with the target company of the transaction: None. 8. Cumulative number, amount, shareholding ratio, and restrictions on rights (e.g., pledges) of the traded securities held to date (including this transaction): 38141GZU1: 851,250 units; US$85.3 million; shareholding ratio: Not applicable; restrictions: None. 61747YEV3: 272,500 units; US$28.0 million; shareholding ratio: Not applicable; restrictions: None. 38141GC77: 1,440,000 units; US$145.1 million; shareholding ratio: Not applicable; restrictions: None. 38141GWL4: 750,000 units; US$74.5 million; shareholding ratio: Not applicable; restrictions: None. 9. Ratio of the securities investment (including this transaction) listed in Article 3 of the "Regulations Governing the Acquisition and Disposal of Assets by Public Companies" to the total assets and equity attributable to owners of the parent in the most recent financial statements, and the working capital in the most recent financial statements to date: 6.12%; 8.22%; NT$325,002 million. 10. Specific purpose of acquisition or disposal: Fixed income investment. 11. Opinions of dissenting directors regarding this transaction: Not applicable 12. Whether this transaction is a related-party transaction: No 13. Trading counterparty and its relationship with the Company: Not applicable 14. Date of acknowledgement by supervisors or approval by the Audit Committee: Not applicable 15. Date of previous major message announced for the same event: Not applicable 16. Other matters requiring statement: None.