Huang Hsiang Announces Acquisition of Securities

1. Security Name: MediaTek Inc.

2. Transaction Date: 115/6/18~115/6/23

3. Board Approval Date: Not applicable

4. Other Approval Dates: Approval Level: Approved by Chairman June 23, 2026 (Minguo Year 115)

5. Transaction Quantity, Unit Price, and Total Amount: Quantity: 168,000 shares Average Price per Share: NT$4,539.23 Total Transaction Amount: NT$762,590 thousand

6. Gain (or Loss) on 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 Restrictions (e.g., Pledge): Quantity: 228,000 shares Amount: NT$1,029,611 thousand Ownership Percentage: 0.014%

9. Cumulative Securities Investments under Paragraph 3 of the 'Asset Acquisition and Disposal Rules for Publicly Issued Companies' (including this transaction) as a Percentage of Total Assets and Equity Attributable to Owners of the Parent in the Company's Most Recent Financial Statements, and the Amount of Working Capital in the Most Recent Financial Statements: Percentage of Total Assets: 1.378% Percentage of Equity Attributable to Owners of the Parent: 5.1062% Working Capital: NT$14,739,777 thousand

10. Specific Purpose of the Acquisition or Disposal: To improve the company's capital utilization efficiency

11. Dissenting Director's Opinion on this Transaction: Not applicable

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