Taipei, Taiwan, May 30, 2019 - United Microelectronics Corporation (NYSE: UMC; TWSE: 2303) (“UMC”), a leading global semiconductor foundry, today announced that it was ranked in the top 5% of companies for the fifth consecutive year in the Corporate Governance Evaluation conducted by the Taiwan Stock Exchange and Taipei Exchange. UMC was recognized with the award during the 5th annual Corporate Governance Evaluation hosted by the two local exchanges (bourses), with UMC's CFO Chitung Liu accepting the honor on behalf of the company. The final 43 publicly and 34 TPEx listed companies were selected from a total of 1,554 companies that were reviewed.

UMC has continued to demonstrate importance of enhancing the company's corporate governance and corporate responsibility by providing higher standards of well-being in environmental and social matters. The company has set up four independent committees to strengthen board oversight and uphold corporate integrity. UMC introduced its newest oversight taskforce, a nomination committee, which aims to strengthen the management mechanism and elevate the company's corporate governance policies. The nomination committee was approved by the board of directors and is represented by four independent directors, reinforcing the corporate governance oversight designed to preserve the interests of stakeholders.

In addition to the Corporate Governance Evaluation, in 2018, UMC was also selected as a Dow Jones Sustainability Index (DJSI) component for the eleventh straight year. The company was also awarded with the “Enterprise Environmental Award of the Republic of China” by the Environmental Protection Administration of the Executive Yuan, R.O.C. for 16 consecutive years.

CFO Liu said, “UMC will continue to contribute towards our mission in pursuing social development and environmental sustainability. We will also strengthen the foundation of our stringent corporate governance policies to create a better society and environment so that UMC can mutually prosper with the people of Taiwan.”

UMC (NYSE: UMC, TWSE: 2303) is a leading global semiconductor foundry that provides advanced IC production for applications spanning every major sector of the electronics industry. UMC’s comprehensive foundry solutions enable chip designers to leverage the company’s sophisticated technology and manufacturing, which include world-class 28nm High-K/Metal Gate technology, 14nm FinFET volume production, specialty process platforms specifically developed for AI, 5G and IoT applications and the automotive industry’s highest-rated AEC-Q100 Grade-0 manufacturing capabilities for the production of ICs found in vehicles. UMC’s 11 wafer fabs are strategically located throughout Asia and are able to produce over 600,000 wafers per month. The company employs more than 20,000 people worldwide, with offices in Taiwan, China, Europe, Japan, Korea, Singapore, and the United States. UMC can be found on the web at https://www.umc.com.

Note From UMC Concerning Forward-Looking Statements
Some of the statements in the foregoing announcement are forward-looking within the meaning of the U.S. Federal Securities laws, including statements about introduction of new services and technologies, future outsourcing, competition, wafer capacity, business relationships and market conditions. Investors are cautioned that actual events and results could differ materially from these statements as a result of a variety of factors, including conditions in the overall semiconductor market and economy; acceptance and demand for products from UMC; and technological and development risks. Further information regarding these and other risks is included in UMC’s filings with the U.S. Securities and Exchange Commission. UMC does not undertake any obligation to update any forward-looking statement as a result of new information, future events or otherwise, except as required under applicable law.