[Jiulong] Supplemental Announcement on Board Resolution to Approve Cash Capital Increase and New Share Issuance

1. Board resolution date: May 19, 2026 (115/05/19) 2. Source of capital: Issuance of new common shares via cash capital increase. 3. Shelf registration: No. 4. Total issuance amount and shares: 150 million TWD, 15 million shares. 5. Applicable for shelf registration: Not applicable. 6. Remaining balance for shelf registration: Not applicable. 7. Face value per share: 10 TWD. 8. Issuance price: Provisional price of 25 TWD per share. Final price to be determined by the Chairman based on market conditions. 9. Shares for employees: 10% of issued shares. 10. Shares for public offering: 10% of issued shares. 11. Allocation for existing shareholders: 80% of issued shares. 12. Handling of fractional shares: Handled by the Chairman through designated underwriters. 13. Rights of new shares: Same as existing common shares. 14. Use of proceeds: To supplement working capital and repay bank loans. 15. Other matters: The Chairman is authorized to handle adjustments to terms due to regulatory requirements or market conditions.