【New Announcement】Due to Our Securities Reaching the Threshold for Public Attention in the Centralized Market, We Are Disclosing Significant Financial and Business Information for Investor Clarity

1. Date of Fact: June 16, 115 (2026)

2. Reason for Disclosure: In response to a notification from the Taiwan Stock Exchange Corporation.

3. Financial and Business Information:

Most Recent Month YoY Change (%) Most Recent Quarter YoY Change (%) Last Four Quarters Cumulative Item April 115 (vs. April 114) Q1 115 (vs. Q1 114) Q2 114 to Q1 115 (Unit: Million TWD) ------------------------------------------------------------------------------------------------------------------- Operating Revenue 318.60 37.75% 959.31 20.87% 3,545.79 Pre-tax Net Profit 89.68 100.63% 243.60 23.89% 714.33 Net Profit 71.74 100.62% 195.09 24.03% 585.74 Earnings Per Share 0.39 105.26% 1.06 24.71% 3.18 (TWD)

4. Whether there are any material events under Article 4 of the 'Procedures for Verification and Disclosure of Material Information by Listed Companies' of the Taiwan Stock Exchange Corporation: No.

5. Whether there is a need to hold a press conference under Article 11 of the same procedures: No.

6. Complete financial information is available on the Public Information Observation Station. Access paths: (1) Recent operating revenue and profit/loss: Basic Information > Summary Version (2) Historical monthly operating revenue: Operations Overview > Monthly Revenue > Monthly Revenue Information under IFRS (3) Historical profit/loss (audited/reviewed figures): Financial Statements > Under IFRS > Consolidated/Individual > Comprehensive Income Statement (4) Historical profit/loss (voluntarily disclosed self-calculated figures): Operations Overview > Self-Reported Earnings Announcement

7. Other Matters to be Disclosed: None.