[Syntec] Announcement of relevant financial and business information due to securities reaching the standard for attention-trading information

1. Date of occurrence of the event: 2026/04/21 2. Cause of occurrence: Conducted according to the instructions of the Taiwan Stock Exchange Corporation. 3. Financial and business information: Item / Recent Month (Mar 2026) / YoY Change / Recent Quarter (Q4 2025) / YoY Change / Q1 2025 to Q4 2025 Operating Revenue (NT$ Million): 2,246 / +48.61% / 3,695 / +38.28% / 13,960 Profit before Tax (NT$ Million): 743 / +103.25% / 1,034 / +193.19% / 2,976 Net Profit Attributable to Owners of the Parent (NT$ Million): 568 / +106.06% / 838 / +192.24% / 2,283 Earnings Per Share (NT$): 8.13 / +84.77% / 12.32 / +170.77% / 35.12 4. Whether there are any material circumstances listed in Article 4 of the TWSE Procedures: None. 5. Whether there are any material circumstances listed in Article 11 of the TWSE Procedures regarding press conferences: None. 6. For complete financial information, please visit the Market Observation Post System. 7. Other matters to be specified: None.