[Tianhong] Announces Material Financial and Business Information as Securities Trading Reaches Public Attention Standards

1. Date of Fact Occurrence: 2026/04/15 2. Reason for Occurrence: As notified by Taiwan Stock Exchange Corporation. 3. Financial and Business Information: Period (Month) (Month) (Quarter) (Quarter) (Latest Four Quarters) ============== =========== ========== ============ ========== ============= Subject Latest Month YoY Change Latest Quarter YoY Change FY114 Q1 to Mar 2026 (%) Q4 2025 (%) FY114 Q4

IFRS Consolidated Preliminary IFRS Reviewed IFRS Reviewed and Audited ============== =========== ========== ============ ========== ============== Revenue (Million NT$) 287 26.43 722 (29.15) 2,245 Profit Before Tax (Million NT$) 62 44.19 92 (47.43) 243 Net Profit Attributable to Owners (Million NT$) 50 35.14 73 (50.00) 203 Earnings Per Share (NT$) 0.74 34.55 1.09 (49.54) 3.01

4. Does the company have any events listed in Article 4 of the 'Rules for Verification and Public Disclosure of Material Information of Publicly Issued Companies by the Taiwan Stock Exchange Corporation' (If 'Yes', please explain): No 5. Does the company have any press conferences for material information as listed in Article 11 of the 'Rules for Verification and Public Disclosure of Material Information of Publicly Issued Companies by the Taiwan Stock Exchange Corporation': No 6. Complete financial information can be found on the Public Information Observatory website, path as follows: (1) Recent Operating Revenue and Profit/Loss Information: Basic Information > Summary (2) Historical Monthly Operating Revenue: Operating Overview > Monthly Revenue > Monthly Revenue Information After Adopting IFRSs (3) Historical Profit/Loss (Audited/Reviewed by Accountant): Financial Statements > Post-IFRS Adoption > Consolidated/Separate Statements > Income Statement (4) Historical Profit/Loss (Voluntary Preliminary Announcement): Operating Overview > Preliminary Profit/Loss Announcement: 7. Other matters to be noted: None