[TSMC] Announcement on Behalf of Subsidiary TSMC Global Ltd. Regarding Acquisition of Fixed-Income Securities

1. Name of the securities: Corporate Bonds. 2. Transaction dates: 2026/1/21~2026/5/18 3. Date of board approval: Not applicable 4. Other approval date: Approval level: Not applicable May 18, 2026 5. Transaction quantity, price per unit, and total transaction amount: 38141GZU1: 189,000 units; US$99.89 per unit; total US$18.9 million. 95000U2V4: 170,000 units; US$99.21 per unit; total US$16.9 million. 06051GKJ7: 116,000 units; US$98.58 per unit; total US$11.4 million. 91159HJF8: 100,000 units; US$100.03 per unit; total US$10.0 million. 172967LP4: 100,000 units; US$99.05 per unit; total US$9.9 million. 172967LS8: 100,000 units; US$98.58 per unit; total US$9.9 million. 6. Gain (or loss) from disposal (not applicable for acquiring securities): Not applicable 7. Relationship with the target company: None. 8. Cumulative holdings of these securities (including this transaction) to date: quantity, amount, shareholding ratio, and any restrictions (e.g., pledges): 38141GZU1: 1,420,250 units; US$142.2 million; ratio: N/A; restrictions: None. 95000U2V4: 1,668,750 units; US$165.1 million; ratio: N/A; restrictions: None. 06051GKJ7: 1,324,000 units; US$130.5 million; ratio: N/A; restrictions: None. 91159HJF8: 100,000 units; US$10.0 million; ratio: N/A; restrictions: None. 172967LP4: 1,861,250 units; US$184.6 million; ratio: N/A; restrictions: None. 172967LS8: 700,000 units; US$69.1 million; ratio: N/A; restrictions: None. 9. To date, the ratio of securities investment (including this transaction) under Article 3 of the "Regulations Governing the Acquisition and Disposal of Assets by Public Companies" to total assets and equity attributable to owners of the parent in the most recent financial statements, and the amount of working capital in the most recent financial statements: 6.01%; 7.42%; NT$325,002 million. 10. Specific purpose of the acquisition or disposal: Fixed-income investment. 11. Opinions of directors who expressed dissent: Not applicable 12. This transaction is a related-party transaction: No 13. Counterparty and its relationship with the company: Not applicable 14. Date of supervisors' approval or audit committee's consent: Not applicable 15. Date of previous material information announcement on the same event: Not applicable 16. Other explanatory matters: None.