【Taishin Technology】The company's securities have reached the standard for public disclosure of attention-requiring trading information in the centralized trading market, thus announcing relevant significant financial and business information for investors' understanding.

1. Date of occurrence of the event: 2026/04/14 2. Cause of occurrence: In accordance with the notification from Taiwan Stock Exchange Corporation. 3. Financial and business information: (IFRS Consolidated) Unit: NT$ millions Most recent month YoY change Item (March 2026 self-reported) Increase/Decrease % ----------------------------------------------------- Operating Revenue 1,193 +15.78% Pre-tax Net Profit 60 -58.82% Net Profit Attributable to Owners of the Parent 60 -58.82% Earnings Per Share (NT$) 0.16 -58.82%

Unit: NT$ millions Most recent quarter YoY change (Q4 2025 reviewed) Increase/Decrease % Item ----------------------------------------------------- Operating Revenue 3,269 +4.86% Pre-tax Net Profit 382 -23.15% Net Profit Attributable to Owners of the Parent 304 -22.82% Earnings Per Share (NT$) 0.78 -22.82%

Item Accumulated for the most recent four quarters (Q1 2025 to Q4 2025 audited) ----------------------------------------------------- Operating Revenue (NT$ millions) 12,334 Pre-tax Net Profit (NT$ millions) 779 Net Profit Attributable to Owners of the Parent 614 Earnings Per Share (NT$) 1.58 4. Is there any material information as listed in Article 4 of the "Taiwan Stock Exchange Corporation Procedures for Verification and Disclosure of Material Information of Listed Securities" (if "Yes", please explain): No. 5. Is there any press conference for material information as listed in Article 11 of the "Taiwan Stock Exchange Corporation Procedures for Verification and Disclosure of Material Information of Listed Securities": No. 6. For complete financial information, please refer to the Market Observation System, paths as follows: (1) Recent operating revenue and profit/loss information: Basic Information > Highlights (2) Historical monthly operating revenue: Operating Overview > Monthly Revenue > Monthly Operating Revenue Information after IFRSs adoption (3) Historical profit/loss (audited/reviewed by accountants): Financial Statements > After IFRSs adoption > Consolidated/Individual Statements > Comprehensive Income Statement (4) Historical profit/loss (voluntary self-reported announcement): Operating Overview > Self-reported Profit/Loss Announcement: 7. Other matters that need to be specified: None.