【TSMC】Our Company Announces Subsidiary TSMC Global Ltd. Acquires Fixed-Income Securities

1. Name of securities: Corporate bonds. 2. Transaction dates: 2026/4/27~2026/4/27 3. Date of board approval: Not applicable 4. Other approval dates: Approval level: Not applicable April 27, 2026 (Republic of China year 115) 5. Quantity of transactions, unit price, and total transaction amount: 61747YEV3: 100,000 units; US$102.67 per unit; total amount US$10.3 million. 38141GC77: 100,000 units; US$100.51 per unit; total amount US$10.1 million. 95000U3A9: 100,000 units; US$100.48 per unit; total amount US$10.0 million. 6. Gain or loss from disposal (not applicable for acquisition of securities): Not applicable 7. Relationship with the target company of the transaction: None. 8. As of now, the accumulated quantity, amount, shareholding ratio, and restricted rights (e.g., pledges) of these traded securities (including this transaction): 61747YEV3: 472,500 units; US$48.5 million; shareholding ratio: not applicable; restricted rights: none. 38141GC77: 1,940,000 units; US$195.4 million; shareholding ratio: not applicable; restricted rights: none. 95000U3A9: 914,900 units; US$91.8 million; shareholding ratio: not applicable; restricted rights: none. 9. As of now, the proportion of investment in marketable securities (including this transaction) as listed in Article 3 of the "Regulations Governing the Acquisition and Disposal of Assets by Public Companies" to the total assets and owners' equity attributable to the parent company in the latest financial report, and the amount of working capital in the latest financial report: 6.07%; 8.15%; NT$325,002 million. 10. Specific purpose of acquisition or disposal: Fixed-income investment. 11. Opinions of dissenting directors on this transaction: Not applicable 12. This transaction is a related party transaction: No 13. Counterparty to the transaction and its relationship with the company: Not applicable 14. Date of supervisors' approval or audit committee's consent: Not applicable 15. Date of previous significant announcement on the same matter: Not applicable 16. Other matters to be specified: None.