MediaTek Announces Disposal of TSMC Shares under Asset Acquisition and Disposal Rules

1. Security Name: TSMC

2. Transaction Date: 2026/5/22 ~ 2026/6/24

3. Board Approval Date: Not applicable

4. Other Approval Dates: Approval Level: Approved by Chairman June 24, 2026 (Minguo Year 115)

5. Transaction Quantity, Unit Price, and Total Amount: Transaction Quantity: 150,000 shares Unit Price: NT$2,309.95 Total Transaction Amount: NT$346,493,049

6. Gain (or Loss) from Disposal (Not applicable for acquisition of securities): Not applicable

7. Relationship with the Target Company: None

8. Cumulative Holdings of the Security (including this transaction) to Date – Quantity, Amount, Ownership Percentage, and Rights Restrictions (e.g., Pledging): Cumulative holding quantity: 350,000 shares Amount: NT$836,500,000 (including valuation gains/losses), ownership percentage: 0.0013% No rights restrictions

9. Cumulative Proportion of Marketable Securities Investment (including this transaction) under Paragraph 3 of the 'Rules for Acquisition or Disposal of Assets by Publicly Issued Companies' to Total Assets and Equity Attributable to Owners of Parent in the Company's Latest Financial Statements, and the Amount of Working Capital in the Latest Financial Statements: Marketable securities investments (including short- and long-term, with valuation gains/losses) account for 30.96% of total assets and 41.81% of equity in the latest financial statements Working capital amount in the latest financial statements: NT$1,158,483,000

10. Specific Purpose of Acquisition or Disposal: Investment and financial management

11. Dissenting Director's Opinion on This Transaction: None

12. Whether This Transaction is a Related-Party Transaction: No

13. Counterparty and Its Relationship with the Company: Not applicable

14. Date of Supervisor Approval or Audit Committee Consent: Not applicable

15. Previous Date of Material Information Disclosure on the Same Event: Not applicable

16. Other Explanatory Matters: None