Rainbow Optoelectronics: Our Company's Q1 2026 Consolidated Financial Report Approved by the Board of Directors

1. Date of submission to or resolution by the board of directors: 115/05/13 2. Date of approval by the audit committee: 115/05/13 3. Reporting period of financial report or annual self-reported financial information (YYYY/MM/DD~YYYY/MM/DD): 115/01/01~115/03/31 4. Cumulative operating revenue from January 1 to the end of this period (in thousands of NTD): 686,097 5. Cumulative operating gross profit (gross loss) from January 1 to the end of this period (in thousands of NTD): 264,879 6. Cumulative operating income (loss) from January 1 to the end of this period (in thousands of NTD): 57,692 7. Cumulative net profit (net loss) before tax from January 1 to the end of this period (in thousands of NTD): 24,146 8. Cumulative net profit (net loss) for this period from January 1 to the end of this period (in thousands of NTD): 24,668 9. Cumulative net profit (loss) attributable to owners of the parent company from January 1 to the end of this period (in thousands of NTD): 24,160 10. Cumulative basic earnings per share (loss) from January 1 to the end of this period (in NTD): 0.40 11. Total assets at the end of the period (in thousands of NTD): 2,326,173 12. Total liabilities at the end of the period (in thousands of NTD): 1,751,805 13. Equity attributable to owners of the parent company at the end of the period (in thousands of NTD): 572,073 14. Other matters that should be specified: None