AU Optronics Announces 2026 Cash Dividend Record Date

Release Date: July 14, 2026 Statement Date: July 13, 2025 Statement Time: 16:40:19 Company Code: 2409 Company Name: AU Optronics Subject: Announcement of the Record Date for the 2026 Cash Dividend Distribution Applicable Clause: Item 14 Factual Date: July 13, 2025

Details: 1. Date of Board, Shareholders' Meeting Resolution or Company Decision: July 13, 2025 2. Type of Rights/Dividend Adjustment (please enter 'Rights Adjustment', 'Dividend Adjustment', or 'Rights and Dividend Adjustment'): Dividend Adjustment 3. Type and Amount of Ordinary Share Cash Dividend: Ordinary Share Cash Dividend: NT$3,018,839,589 (NT$0.40 per share) 4. Ex-Dividend Trading Date: July 30, 2026 5. Last Transfer Date: August 1, 2026 6. Start Date of Transfer Suspension: August 2, 2026 7. End Date of Transfer Suspension: August 6, 2026 8. Ex-Dividend Record Date: August 6, 2026 9. Final Date for Bond Conversion Application: Not Applicable 10. Start Date of Bond Conversion Suspension: Not Applicable 11. End Date of Bond Conversion Suspension: Not Applicable 12. Ordinary Share Cash Dividend Payment Date: August 28, 2026 13. Is Part or All of the Cash Dividend Paid in Foreign Currency (please enter 'Yes' or 'No'): No 14. Foreign Currency for Cash Dividend: Not Applicable 15. Recipients of Foreign Currency Cash Dividend: Not Applicable 16. Method of Determining Exchange Rate for Foreign Currency Dividend: Not Applicable 17. Other Matters to be Disclosed: The ex-dividend trading date for American Depositary Receipts (ADRs) is July 30, 2026; the dividend record date for ADRs is August 1, 2026. For inquiries regarding ADR dividends, please contact Citibank, N.A., the depositary bank for AU Optronics ADRs (Phone: +1-877-248-4237; Email: [email protected]).