[Yubang] Announcement of the Company's Q1 115 Consolidated Financial Report Approved by the Board of Directors

1. Date of report to the board of directors or resolution by the board of directors: 2026/05/05 (ROC calendar 115/05/05) 2. Date of approval by the audit committee: 2026/05/05 (ROC calendar 115/05/05) 3. Reporting period for financial report or annual self-reported financial information Start and end dates (YYY/MM/DD~YYY/MM/DD): 2026/01/01~2026/03/31 (ROC calendar 115/01/01~115/03/31) 4. Cumulative operating revenue from January 1 to the end of this period (NT$ thousands): 1,128,235 5. Cumulative operating gross profit (gross loss) from January 1 to the end of this period (NT$ thousands): 415,123 6. Cumulative operating income (loss) from January 1 to the end of this period (NT$ thousands): 216,692 7. Cumulative net profit (net loss) before tax from January 1 to the end of this period (NT$ thousands): 240,119 8. Cumulative net profit (net loss) for this period from January 1 to the end of this period (NT$ thousands): 181,656 9. Cumulative net profit (loss) attributable to owners of the parent company from January 1 to the end of this period (NT$ thousands): 186,006 10. Cumulative basic earnings per share (loss) from January 1 to the end of this period (NT$): 2.11 11. Total assets at the end of the period (NT$ thousands): 9,837,837 12. Total liabilities at the end of the period (NT$ thousands): 4,063,555 13. Equity attributable to owners of the parent company at the end of the period (NT$ thousands): 5,682,595 14. Other matters that need to be specified: None