8499 Dingxuan-KY Announces Cash Dividend Ex-Dividend Date

Announcement Date: June 24, 2026 Statement Date: June 23, 2026 Statement Time: 16:16:42 Company Code: 8499 Company Name: Dingxuan-KY Subject: Announcement of the Record Date for the Company's Cash Dividend Applicable Clause: Clause 14 Factual Date: June 23, 2026

Details: 1. Date of Board, Shareholders' Meeting Resolution, or Company Decision: June 23, 2026 2. Type of Ex-Rights/Ex-Dividend (please enter "Ex-Rights", "Ex-Dividend", or "Ex-Rights-Ex-Dividend"): Ex-Dividend 3. Type and Amount of Ordinary Share Dividend: Cash dividend of TWD 8 per share, total amount TWD 329,324,456 4. Ex-Dividend Trading Day: July 9, 2026 5. Last Transfer Date: July 12, 2026 6. Start Date of Transfer Suspension: July 13, 2026 7. End Date of Transfer Suspension: July 17, 2026 8. Ex-Dividend Record Date: July 17, 2026 9. Final Application Date for Bond Conversion: 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 10, 2026 13. Other Matters to be Stated: None