【Guang Hong】Announcement of relevant financial and business information due to the company's securities reaching the disclosure standard for cautionary trading information.

1. Date of occurrence: 115/04/16 2. Reason for occurrence: In accordance with the Taiwan Stock Exchange's notification regarding major information. 3. Financial and business information: Period (Month) (Quarter) (Last four quarters) ========================================================================== Latest month Year-on-year Latest quarter Year-on-year Q1 to Q4 114 Subject March 2026 change 4th Quarter 2025 change (IFRS Consolidated) (%) (%) (IFRS consolidated preliminary figures) (IFRS consolidated figures reviewed or audited by accountants) ========================================================================== Operating Revenue 140.93 12.60% 320.97 -2.45% 1,349.02 (Million) Profit before tax 14.98 430.26% 23.72 299.82% -85.62 (Million) Net profit 14.98 446.24% 23.05 332.67% -80.28 attributable to parent company shareholders (Million) Earnings per share 0.15 475.00% 0.23 330.00% -0.80 (NT$) 4. Whether there is any major information as listed in Article 4 of the 'Procedures for Review and Public Disclosure of Major Information of Listed Companies by the Taiwan Stock Exchange Corporation' (If 'Yes', please explain): No. 5. Whether there is any press conference to explain major information as listed in Article 11 of the 'Procedures for Review and Public Disclosure of Major Information of Listed Companies by the Taiwan Stock Exchange Corporation': No. 6. For complete financial information, please refer to the Public Information Observatory, at the following path: (1) Recent operating revenue and profit/loss information: Basic Information > Summary (2) Historical monthly operating revenue: Operational Overview > Monthly Revenue > Information on Monthly Operating Revenue after adopting IFRS (3) Historical profit/loss (audited/reviewed by accountant): Financial Statements > After adopting IFRS > Consolidated/Separate Statements > Statement of Comprehensive Income (4) Historical profit/loss (voluntarily announced preliminary figures): Operational Overview > Preliminary Profit/Loss Announcement: 7. Other matters to be noted: None.