UMC Announces Financial Institutions for Domestic First and Second Unsecured Convertible Corporate Bonds Collection and Escrow Accounts

1. Factual Date: 115/07/21 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 simultaneously meets the criteria under Article 7, Clause 9 of the Enforcement Rules of the Securities and Exchange Act regarding matters having significant impact on shareholders' equity or securities prices): (1) Contract Date: 115/7/21 (2) Financial Institution Entrusted for Proceeds Collection: Hua Nan Commercial Bank, Head Office Business Division (3) Financial Institution Entrusted for Escrow Account: CTBC Bank, Dunnan Branch