[Double Key] Announcement of Financial and Business Information Due to Reaching Disclosure Standards for Attention Securities

1. Date of occurrence: May 22, 2026 2. Reason for occurrence: In accordance with the instructions of the Taiwan Stock Exchange Co., Ltd. 3. Financial and business information: (Unit: NT$ millions; EPS in NT$)

- Revenue: April 336 (+21% YoY), Q1 823 (+25% YoY), Cumulative last four quarters 3,013 - Pre-tax net profit: April 48 (+223% YoY), Q1 115 (+151% YoY), Cumulative last four quarters 220 - Net profit attributable to owners of the parent: April 36 (+240% YoY), Q1 88 (+176% YoY), Cumulative last four quarters 161 - Earnings Per Share (EPS): April 0.42 (+250% YoY), Q1 1.03 (+178% YoY), Cumulative last four quarters 1.88

4. Whether there are any major events as listed in Article 4 of the 'Taiwan Stock Exchange Procedures for Verification and Disclosure of Material Information of Listed Companies': None 5. Whether there are any material information press conferences as listed in Article 11 of the same procedures: None 6. For complete financial information, please check the Market Observation Post System. 7. Other matters: None