【Unimicron】Correction to the Loan Disclosure Statement for February to March 2026

1. Date of occurrence: 2026/04/27 2. Company name: UniBest Holding Limited 3. Relationship with the company (please enter "this company" or "subsidiary"): Subsidiary 4. Mutual shareholding ratio: 100% 5. Reason for occurrence: Correction to the loan disclosure statement for February to March 2026 of this company. 6. Corrected information item/report name: Loan Disclosure Statement 7. Amount/content/page before correction: (1) February 2026 UniBest Holding Limited loan Individual loan limit to SMART IDEA HOLDINGS LIMITED: NT$5,200,892 thousand (2) February 2026 UniBest Holding Limited loan Total loan limit to SMART IDEA HOLDINGS LIMITED: NT$5,200,892 thousand (3) March 2026 UniBest Holding Limited loan Individual loan limit to SMART IDEA HOLDINGS LIMITED: NT$5,330,831 thousand (4) March 2026 UniBest Holding Limited loan Total loan limit to SMART IDEA HOLDINGS LIMITED: NT$5,330,831 thousand 8. Amount/content/page after correction: (1) February 2026 UniBest Holding Limited loan Individual loan limit to SMART IDEA HOLDINGS LIMITED: NT$13,002,230 thousand (2) February 2026 UniBest Holding Limited loan Total loan limit to SMART IDEA HOLDINGS LIMITED: NT$13,002,230 thousand (3) March 2026 UniBest Holding Limited loan Individual loan limit to SMART IDEA HOLDINGS LIMITED: NT$13,327,077 thousand (4) March 2026 UniBest Holding Limited loan Total loan limit to SMART IDEA HOLDINGS LIMITED: NT$13,327,077 thousand 9. Countermeasures: Re-upload to the Market Observation Post System after correction. 10. Other matters that need to be specified: None.