UMC today announced that it has once again received an AA rating in the MSCI ESG Ratings for the third straight year, demonstrating the company's resilience and management of ESG-related risks to investors . The latest MSCI assessment covers 240 companies worldwide in the Semiconductors & Semiconductor Equipment industry, with UMC achieving the highest ESG score among Taiwan-based semiconductor companies in 2025.

In addition, UMC has been selected as a constituent of several major MSCI ESG indices, including the MSCI ACWI SRI Index, the MSCI ACWI Selection Index, and the MSCI Emerging Markets Selection Index. UMC is proud to continue receiving recognition from leading international ESG benchmarks, underscoring the company's sustained efforts towards environmental, social, and governance best practices.

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