Chang Guang Announces Financial Information Due to Trading Threshold on Centralized Market

1. Date of Event: 2026/07/24

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

3. Financial and Business Information:

Period (Monthly) (Quarterly) (Last Four Quarters) ============ ====================== ======================== ============== Item Most Recent Month YoY Change Most Recent Quarter YoY Change From 2Q 2025 to Jun 2026 (%) Q1 2026 (%) Q1 2026 Consolidated (vs. Prior Consolidated (vs. Prior Consolidated Preliminary Year) Audited/Reviewed Year) Audited/Reviewed Figures Figures Figures ============ ====================== ======================== ============== Revenue (NT$ million) 176 63% 418 -17% 1,810 Pre-tax Net Profit (NT$ million) 46 111% 46 -63% 337 Net Profit Attributable to Owners of Parent (NT$ million) 24 124% 16 -74% 173 Earnings Per Share (NT$) 0.30 102% 0.21 -76% 2.43

Note: The financial data for June 2026 and the year-earlier comparison are consolidated preliminary figures prepared by the Company under IFRS accounting standards,未经 certified public accountants' audit (review), for investors' reference only.

Note: The most recent quarter (Q1 2026) refers to the standalone quarterly figure, consolidated data prepared under IFRS, audited (reviewed) by accountants, for investors' reference only.

Note: The last four quarters cumulative data covers Q2 2025 to Q1 2026, consolidated figures prepared under IFRS, audited (reviewed) by accountants, for investors' reference only.

4. Whether there is any material information as defined in Article 4 of the 'Taiwan Stock Exchange Corporation Procedures for Verification and Public Disclosure of Material Information by Listed Companies': No

5. Whether there is any press conference for material information as defined in Article 11 of the above procedures: No

6. Complete financial information is available on the Public Information Observation Station. Access paths are as follows: (1) Recent operating revenue and profit/loss information: Company Overview > Highlights (2) Historical monthly operating revenue: Operations > Monthly Revenue > Monthly Operating Revenue Information (Post-IFRS) (3) Historical profit/loss (audited/reviewed by accountants): Financial Statements > Post-IFRS > Consolidated/Individual Statements > Consolidated Statement of Comprehensive Income (4) Historical profit/loss (voluntary self-announced preliminary figures): Operations > Self-Announced Profit/Loss

7. Other Matters to be Disclosed: None