Taiwan Crystal Technology Announces Consolidated Financial Results for May 2026

1. Date of Fact: 115/06/15 2. Company Name: Taiwan Crystal Technology Co., Ltd. 3. Relationship with Company (Enter 'Company' or 'Subsidiary'): Company 4. Cross-shareholding Ratio: Not applicable 5. Reason for Occurrence:

Monthly Amount YoY Change Cumulative Amount YoY Change Item May 115 Ratio 115 Year Ratio (NT$ Thousand) (YoY) (YoY) -------------------------------------------------------------------------- Consolidated Revenue $ 1,217,159 10.5% $ 5,845,075 5.5% Consolidated Operating Profit $ 204,372 18.8%　 $ 930,663 0.8% Consolidated Pre-tax Income 　 $ 207,003 85.1%　 $ 989,904 13.5% Attributable to Parent $ 205,793 82.9% $ 988,023 13.0% Non-controlling Interests $ 1,210 284.7% $ 1,881 205.6% Pre-tax EPS $ 0.61 $ 2.91 Attributable to Parent $ 0.60 $ 2.90 Non-controlling Interests $ 0.01 $ 0.01 (NT$) Note: Pre-tax EPS is calculated based on the number of shares outstanding at the end of the month.