Jing-Shi Announces Financial Information Due to Trading Alert Triggered by Securities Performance on Centralized Market

1. Date of Event: June 23, 115 (2026) 2. Reason for Disclosure: In compliance with instructions from the Taiwan Stock Exchange Corporation 3. Financial and Business Information:

Period (Monthly) (Quarterly) (Last Four Quarters Cumulative) Latest Month YoY Change% Latest Quarter YoY Change% Q2 114 to Q1 115 Item May 115 (Consolidated Preliminary) Q1 115 (Consolidated Reviewed) (Consolidated Reviewed) ======== ===================== ===================== ==================== Revenue 4,200 million NT$ 33.04% 11,105 million NT$ 28.83% 41,836 million NT$ Pre-tax Net Profit 610 million NT$ 563.04% 964 million NT$ 37.71% 3,352 million NT$ Net Profit Attributable to Owners of Parent 461 million NT$ 2973.33% 549 million NT$ 98.91% 1,869 million NT$ Earnings Per Share (NT$) 0.91 NT$ 2973.33% 1.17 NT$ 91.80% 4.07 NT$

4. Whether there are material events under Article 4 of the 'Taiwan Stock Exchange Corporation Procedures for Verification and Public Disclosure of Material Information for Listed Securities': No 5. Whether there is a press conference required under Article 11 of the same procedures: No 6. Complete financial information is available on the Public Information Observation Station via the following paths: (1) Recent operating revenue and profit/loss: Basic Information > Highlights (2) Historical monthly revenue: Operations Overview > Monthly Revenue > Monthly Operating Revenue Information (Post-IFRS Adoption) (3) Historical profit/loss (audited/reviewed figures): Financial Statements > Post-IFRS Adoption > Consolidated/Individual > Consolidated Statement of Comprehensive Income (4) Historical profit/loss (voluntary preliminary announcements): Operations Overview > Preliminary Earnings Announcements: None 7. Other Matters to be Disclosed: None