Hsinchu, Taiwan, September 8, 2016 – United Microelectronics Corporation (NYSE:UMC; TWSE: 2303) ("UMC"), a leading global semiconductor foundry, today announced that Dow Jones Sustainability Index (DJSI) has selected UMC as a global component for the ninth consecutive year. DJSI awarded UMC with perfect scores in Environmental Policy and Management System and Environmental Reporting, with high scores in multiple other categories, illustrating the company's continued excellence in sustainable operations. This accomplishment sets a standard for leading global companies and is recognized by international investors. DJSI-World 2016 evaluated approximately 2,500 global enterprises, with only four semiconductor companies selected worldwide and only three listed for DJSI-Emerging Markets.

Po Wen Yen, CEO at UMC, said, "We are proud to be listed as a DJSI global component for the ninth consecutive year. This international recognition of our long-term efforts and performance for economic, environmental and social issues places UMC at the forefront to lead Taiwan businesses towards international corporate sustainable standards. UMC pursues the 17 sustainable development goals (SDGs) that the United Nations has set for 2016, and continues to advance wafer processing solutions to enhance the role that science and technology plays within our civilization. We also actively promote our Green 2020 climate change prevention goals and established a Green Award to encourage creative proposals on new conservation measures, as well as spearhead several community charity programs.”

Dow Jones Sustainability Indices was launched jointly by Dow Jones Index, STOXX and Sustainable Asset Management (SAM) in 1999. DJSI is the first index that traces social responsibility performance of leading-edge enterprises, and is also one of the most creditable evaluation tools for reviewing sustainability worldwide. The Dow Jones Sustainability World Index and respective subsets track the performance of the top 10% of the 2,500 largest companies in the S&P Global Broad Market Index^SM that lead the field in terms of sustainability. The Dow Jones Sustainability Emerging Markets Index tracks the performance of the top 10% of the 800 largest Emerging Markets companies in the S&P Global Broad Market Index^SM that lead the field in terms of sustainability.

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 robust foundry solutions enable chip designers to leverage the company’s sophisticated technology and manufacturing, which include volume production 28nm gate-last High-K/Metal Gate technology, ultra-low power platform processes specifically engineered for Internet of Things (IoT) applications and the automotive industry’s highest-rated AEC-Q100 Grade-0 manufacturing capabilities for production of ICs found in cars. UMC’s 10 wafer fabs are strategically located throughout Asia and are able to produce over 500,000 wafers per month. The company employs more than 17,000 people worldwide, with offices in Taiwan, mainland China, Europe, Japan, Korea, Singapore, and the United States. UMC can be found on the web at http://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.