【Shin Kong Steel】Announcement by Shin Kong Steel setting the record date for ordinary share cash dividends as June 21, 2026

1. Date of resolution by the Board of Directors or shareholders' meeting or company decision: 2026/05/05 2. Type of ex-right or ex-dividend (please fill in "ex-right", "ex-dividend", or "ex-right and ex-dividend"): Ex-dividend 3. Type and amount of ordinary share dividends to be distributed: Total amount of ordinary share cash dividends is NT$802,865,853. 4. Ex-dividend trading date: 2026/06/15 5. Last date for transfer registration: 2026/06/16 6. Start date of transfer suspension period: 2026/06/17 7. End date of transfer suspension period: 2026/06/21 8. Ex-dividend record date: 2026/06/21 9. Last date for bond conversion application: Not applicable 10. Start date of bond conversion suspension period: Not applicable 11. End date of bond conversion suspension period: Not applicable 12. Ordinary share cash dividend payment date: 2026/07/17 13. Other matters to be specified: The cash dividend distribution rate is NT$2.5 per share.