Unimicron Announces Adjustment of Conversion Price for First Domestic Unsecured Convertible Bonds

Announcement Date: July 9, 2026 Statement Date: July 8, 2026 Statement Time: 16:27:40 Company Code: 3037 Company Name: Unimicron Technology Corp. Subject: Announcement of Adjustment to Conversion Price of First Domestic Unsecured Convertible Bonds Applicable Clause: Item 51 Factual Date: July 8, 2026 Details: 1. Factual Date: 07/08/2026 2. Company Name: Unimicron Technology Corp. 3. Relationship with Company (Please enter '本公司' or 'Subsidiary'):本公司 4. Cross-shareholding Ratio: Not applicable 5. Reason: Due to the cash dividend distribution by the Company, the conversion price is adjusted according to Article 11 of the Issuance and Conversion Rules for the Company's First Domestic Unsecured Convertible Bonds 6. Measures Taken: From the ex-dividend reference date of July 12, 2026, the conversion price of the first domestic unsecured convertible bonds will be adjusted from NT$164.1 to NT$163.8 7. Other Matters to be Stated: None