[Xinxin-KY] Announces Major Financial Information Due to Securities Trading Reaching Public Attention Threshold

1. Factual Date: 115/06/12 2. Reason: In accordance with notification from Taiwan Stock Exchange Corporation 3. Financial and Business Information:

Period (Monthly) (Quarterly) (Last Four Quarters Cumulative) Most Recent Month vs. Same Month Last Year Most Recent Quarter vs. Same Quarter Last Year From Q2 2025 to Item April 2026 Change % Q1 2026 Change % Q1 2026 ------------------------------------------------------------------------------------------------------------------------ IFRS Consolidated Self-Computed Figures IFRS Consolidated Audited Figures IFRS Consolidated Audited Figures Revenue 641.12 -2.79% 1,553.38 -21.42% 7,108.48 (Million) Pre-tax Net Profit 24.26 131.72% -84.82 -16.64% 237.95 (Million) Net Profit Attributable to Owners of Parent 4.38 107.92% -153.77 -38.29% -15.06 (Million) Earnings Per Share 0.04 107.85% -1.45 -38.10% -0.14 (NTD)

4. Whether there are material events under Article 4 of the 'Taiwan Stock Exchange Corporation Procedures for Verification and Disclosure of Material Information by Listed Companies': No. 5. Whether a press conference under Article 11 of the above procedures is required: No. 6. Complete financial information is available on the Public Information Observation Station. Access paths: (1) Recent operating revenue and profit/loss: Basic Information > Summary (2) Historical monthly operating revenue: Operations Overview > Monthly Revenue > Monthly Operating Revenue Information under IFRS (3) Historical profit/loss (audited/reviewed by accountants): Financial Statements > Under IFRS > Consolidated/Individual Statements > Consolidated Income Statement (4) Historical profit/loss (voluntary self-computed announcements): Operations Overview > Self-Computed Profit/Loss Announcements: None. 7. Other Matters to be Disclosed: None.