[Huang Hsiang] Announcement regarding the acquisition of securities

1. Name of Security: MediaTek Inc. 2. Date of Transaction: 115/6/11~115/6/17 3. Date of Board Approval: N/A 4. Other Authorization Dates: Authorization level: Chairman authorization June 17, 115 (2026) 5. Quantity, Unit Price, and Total Amount: Quantity: 98,000 shares Average price per share: NTD 4,345.87 Total transaction amount: NTD 425,895,000 6. Disposal Gain (or Loss) (N/A for securities acquisition): N/A 7. Relationship with the target company: None 8. Cumulative holdings to date (including this transaction): Quantity: 85,000 shares Amount: NTD 377,830,000 Shareholding percentage: 0.005% Rights limitations (e.g., pledge): None 9. Ratio of investments in securities under Article 3 of the 'Regulations Governing the Acquisition and Disposal of Assets by Publicly Issued Companies' to total assets and equity attributable to parent company owners in the most recent financial statement, and the working capital amount: Ratio to total assets: 0.770% Ratio to equity attributable to parent company owners: 2.852% Working capital: NTD 14,739,777,000 10. Specific purpose of acquisition: To improve capital efficiency 11. Dissenting opinions of directors: N/A 12. Is it a related party transaction: No 13. Counterparty relationship: N/A 14. Date of audit committee approval: N/A 15. Date of prior announcement for the same event: N/A 16. Other notes: None