2486 YIC - Financial Highlights Announced Due to Exchange Trading Alert

Release Date: June 24, 2026 Statement Date: June 23, 2026 Statement Time: 15:38:57 Company Code: 2486 Company Name: YIC Purpose: The company's securities have reached the Taiwan Stock Exchange's criteria for public alert on trading activity. Therefore, we disclose significant financial and operational information to assist investors in making informed decisions.

Applicable Clause: Item 51 Factual Date: June 23, 2026

Details: 1. Factual Date: 06/23/2026 2. Reason: Announcement made pursuant to notification from the Taiwan Stock Exchange Corporation. 3. Financial and Operational Information:

Period (Monthly) (Quarterly) Last Four Quarters ------------------- ------------------- ------------------- Latest Month YoY % Latest Quarter YoY % 2025 Q2 to 2026 Q1 Item May-2026 Q1-2026 Cumulative -------------------------------------------------------------------------------- Revenue NT$694M +31.44% NT$1,620M +19.91% NT$6,315M Pre-tax Net Profit NT$56M +196.55% NT$86M +473.33% NT$159M Net Profit Attributable to Owners of Parent NT$47M +202.17% NT$66M +3,400.00% NT$119M Earnings Per Share (EPS) NT$0.20 +200.00% NT$0.29 +3,000.00% NT$0.52

4. Whether there are any material events under Article 4 of the 'TSEC Procedures for Verification and Disclosure of Material Information by Listed Companies': No 5. Whether there is a press conference scheduled under Article 11 of the same procedures: No 6. Complete financial data is available on the Public Information Observation Station via the following paths: (1) Recent Revenue and Earnings: Basic Information > Highlights (2) Historical Monthly Revenue: Operations > Monthly Revenue > Monthly Revenue Information under IFRS (3) Historical Earnings (Audited/Reviewed): Financial Statements > Under IFRS > Consolidated/Individual > Comprehensive Income Statement (4) Historical Earnings (Voluntary Preliminary Announcements): Operations > Preliminary Earnings Announcements 7. Other Matters to be Disclosed: None