【Tongtai】Announcement of the Company's Q1 2026 Consolidated Financial Report Approved by the Board of Directors

1. Date of report to or resolution by the Board of Directors: 2026/05/13 2. Date of approval by the Audit Committee: 2026/05/11 3. Reporting period of the financial report or annual self-compiled financial information Start and end dates (YYY/MM/DD~YYY/MM/DD): 2026/01/01~2026/03/31 4. Operating revenue from January 1st accumulated to the current period (in thousands of TWD): 1,075,681 5. Operating gross profit (loss) from January 1st accumulated to the current period (in thousands of TWD): 130,157 6. Operating income (loss) from January 1st accumulated to the current period (in thousands of TWD): (172,168) 7. Net profit (loss) before tax from January 1st accumulated to the current period (in thousands of TWD): (167,034) 8. Net profit (loss) for the current period from January 1st accumulated to the current period (in thousands of TWD): (166,422) 9. Net profit (loss) attributable to owners of the parent company from January 1st accumulated to the current period (in thousands of TWD): (162,552) 10. Basic earnings (loss) per share from January 1st accumulated to the current period (in TWD): (0.65) 11. Total assets at the end of the period (in thousands of TWD): 12,845,398 12. Total liabilities at the end of the period (in thousands of TWD): 8,005,751 13. Equity attributable to owners of the parent company at the end of the period (in thousands of TWD): 4,768,682 14. Other matters that need to be specified: None