Hsinchu, Taiwan, April 29, 2022 - 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 eighth consecutive year in the Corporate Governance Evaluation conducted by the Taiwan Stock Exchange and Taipei Exchange. UMC had outstanding marks in areas including the protection of shareholders' rights and interests, strength of operation of the Board of Directors and Director functions, timely information disclosure, and execution of corporate social responsibility measures.

The final 46 TWSE listed and 36 TPEx listed firms in the top 5% ranking were selected from a total of 1,639 companies included in the evaluation. Since the implementation of the Corporate Governance Evaluation in 2015, only nine listed companies including UMC have received this recognition for eight consecutive years.

UMC is committed to strengthening governance and establishing a rigorous governance structure. In addition to setting a clear code of practice for corporate governance, the company is also actively promoting diversity on its Board of Directors. UMC’s board is composed of nine directors with a range of professional backgrounds, of which five are independent directors, representing more than 50% of the board seats. Gender equality on the board is also a focus for the company, which welcomed its first female director in 2015. Following the board re-election in 2021, the number of female directors increased to two. UMC currently leads Taiwan’s semiconductor foundry industry in board gender equality and will further increase the female director seats progressively.

With governance being a key ESG pillar, UMC established the ESG Steering Committee in the fourth quarter of 2020, which is chaired by the two co-presidents. Other committee members are senior management involved in the company’s core operations, which enables integration between the company’s business operations and its ESG strategies and goals. By working closely with global supply chain partners and stakeholders, UMC is committed to the best corporate sustainability practices and to have a positive impact on the environment, society, and economy.

About UMC

UMC (NYSE: UMC, TWSE: 2303) is a leading global semiconductor foundry company. The company provides high quality IC fabrication services, focusing on logic and various specialty technologies to serve all major sectors of the electronics industry. UMC’s comprehensive IC processing technologies and manufacturing solutions include Logic/Mixed-Signal, embedded High-Voltage, embedded Non-Volatile-Memory, RFSOI and BCD etc. Most of UMC's 12-in & 8-in fabs with its core R&D are located in Taiwan, with additional ones throughout Asia. UMC has total 12 fabs in production with combined capacity over 800,000 wafers per month (8-in equivalent), and all of them are certified with IATF 16949 automotive quality standard. UMC is headquartered in Hsinchu, Taiwan, plus local offices in United States, Europe, China, Japan, Korea & Singapore, with worldwide total 20,000 employees. For more information, please visit: 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.