Kah-Han: Securities Trigger Exchange Surveillance Alert, Financial Data Disclosed

1. Date of Event: 2026/07/23

2. Reason for Disclosure: In accordance with instructions from the Taiwan Stock Exchange Corporation

3. Financial and Business Information:

Period　　　　　　　Monthly　　　　　　　　Quarterly　　　　　Cumulative Last Four Quarters ＝＝＝＝　＝＝＝＝＝＝＝＝＝＝＝　＝＝＝＝＝＝＝＝＝＝＝　＝＝＝＝＝＝＝ Most Recent Month　YoY %　Most Recent Quarter　YoY %　Q2 2025 to Q1 2026 Item　　　Jun 2026　　　　　Change　Q1 2026　　　　　　Change　(Consolidated Audited) (Consolidated Preliminary)　(Consolidated Audited) ＝＝＝＝　＝＝＝＝＝　＝＝＝＝＝　＝＝＝＝＝　＝＝＝＝＝　＝＝＝＝＝＝＝ Revenue　　17,661　　　56.97%　　37,112　　　7.68%　　　144,936 (NT$ million) Pre-tax Net Profit　475　　　82.96%　　2,414　　　-1.87%　　　9,862 (NT$ million) Net Profit Attributable to Owners of Parent　370　　　80.65%　　752　　　-9.07%　　　3,138 (NT$ million) Earnings Per Share　2.52　　　69.13%　　5.15　　　-14.45%　　　22.39 (NT$)

4. Whether there are material events under Article 4 of the 'TSEC Procedures for Verification and Public Disclosure of Material Information by Listed Companies': No

5. Whether there is a requirement under Article 11 to hold a press conference for material information: No

6. Complete financial information 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 > Consolidated Statement of Comprehensive Income (4) Historical earnings (self-announced preliminary): Operations > Preliminary Earnings Announcement

7. Other Matters to be Disclosed: None