[SDI] Announcement of the Board of Directors'' Approval of the Consolidated Financial Report for Q1 2026

1. Date of submission to or resolution by the Board of Directors: 2026/05/07 2. Date of approval by the Audit Committee: 2026/05/07 3. Reporting period of financial report or annual self-audited financial information (YYYY/MM/DD~YYYY/MM/DD): 2026/01/01~2026/03/31 4. Cumulative operating revenue from January 1 to the current period (in thousands of NTD): 1,744,783 5. Cumulative operating gross profit (loss) from January 1 to the current period (in thousands of NTD): 460,838 6. Cumulative operating income (loss) from January 1 to the current period (in thousands of NTD): 193,997 7. Cumulative net profit (loss) before tax from January 1 to the current period (in thousands of NTD): 184,067 8. Cumulative net profit (loss) for the current period from January 1 to the current period (in thousands of NTD): 142,183 9. Cumulative net profit (loss) attributable to owners of the parent company from January 1 to the current period (in thousands of NTD): 144,835 10. Cumulative basic earnings per share (loss) from January 1 to the current period (in NTD): 1.76 11. Total assets at the end of the period (in thousands of NTD): 10,415,508 12. Total liabilities at the end of the period (in thousands of NTD): 4,638,877 13. Equity attributable to owners of the parent company at the end of the period (in thousands of NTD): 5,638,569 14. Other matters that should be specified: None