[TSMC] Announcement of Disposal of Shares in Vanguard International Semiconductor Corporation

1. Name of the security: Common shares of Vanguard International Semiconductor Corporation
2. Trading date: 2026/5/15~2026/5/15
3. Date of board of directors resolution: N/A
4. Date of other approval: Approval level: Chairman, May 15, 2026
5. Transaction volume, unit price, and total transaction amount: Volume: up to 152,000,000 shares; Estimated price: within ±10% of the closing price of NT$176.5 on May 15; Estimated total amount: NT$24,145 million to NT$29,511 million.
6. Gain (or loss) from disposal (not applicable to acquisition of securities): The disposal gain calculated based on the transaction price of NT$176.5 is NT$71,816 million (including the gain from remeasuring the remaining shares at fair value).
7. Relationship with the underlying company: An associate company accounted for using the equity method.
8. Current cumulative volume, amount, and holding percentage of the security being traded (including this transaction) and status of any restriction of rights (e.g., pledges): 354,709,324 shares; Book value NT$62,606 million; 19.0%; None.
9. Current ratio of investment in securities specified in Article 3 of the "Regulations Governing the Acquisition and Disposal of Assets by Public Companies" (including this transaction) to total assets and equity attributable to owners of the parent in the latest financial statements, and the working capital in the latest financial statements: 39.1%; 48.3%; NT$325,002 million.
10. Concrete purpose of the acquisition or disposal: Disposal of equity investment.
11. Opinions of dissenting directors regarding this transaction: N/A
12. Is this transaction a related party transaction: No
13. Trading counterparty and its relationship with the company: N/A
14. Date of approval by the board of supervisors or the audit committee: N/A
15. Date of prior material information announcement regarding the same event: N/A
16. Other explanatory matters: (1) Pursuant to regulations on insider share transfers, the actual trading dates are expected to be between May 18 and June 17. (2) The announcement estimates are based on the maximum volume of 152,000,000 shares and the closing price of NT$176.5 on May 15; actual amounts, gains, and final holding volume will depend on the actual transaction volume and price.