[USI] Supplementary Announcement on the Record Date for Cash Capital Reduction Resolved by the Board of Directors of Important Subsidiary, Lien-Yu International Investment Co., Ltd.

1. Date of Board of Directors' resolution: May 19, 2026 2. Record date for capital reduction: May 21, 2026 3. Plan for share replacement due to capital reduction: Not applicable 4. Record date for share replacement: N/A 5. Starting date for suspension of transfer: N/A 6. Ending date for suspension of transfer: N/A 7. Rights and obligations of new shares after capital reduction: Same as original shares 8. Expected listing date of new shares: N/A 9. Number of listed ordinary shares after capital reduction: Not applicable 10. Ratio of listed ordinary shares after capital reduction to issued ordinary shares: Not applicable 11. Response measures to low share liquidity if listed ordinary shares are under 60 million and under 25%: Not applicable 12. Other matters to be specified: Supplementary to the announcement dated March 12, 2026. Capital reduction amount: 250,000,000 TWD Shares eliminated: 25,000,000 shares Capital reduction ratio: 2.7223487725% Capital after reduction: 8,933,246,560 TWD