UMC Announces Full Subscription of Second Domestic Unsecured Convertible Corporate Bond

1. Date of Event: 115/09/02 2. Company Name: United Microelectronics Corporation 3. Relationship with Company (Please enter '本公司' or 'Subsidiary'):本公司 4. Cross-shareholding Ratio: Not applicable 5. Reason for Occurrence: In accordance with Article 9, Paragraph 1, Clause 2 of the 'Regulations Governing the Offering and Issuance of Securities by Issuers' 6. Response Measures: None 7. Other Matters to be Disclosed (If the subject of the event or resolution is a publicly issued company or above, this major information also qualifies as a matter under Article 7, Clause 9 of the Enforcement Rules of the Securities and Exchange Act that significantly affects shareholders' rights or securities prices): The receiving bank for UMC's second domestic unsecured convertible corporate bond has collected all subscription proceeds amounting to NT$4,792,798,780 in total as of the announcement date and has remitted the funds to the designated storage account. This is hereby officially announced.