Mary Jane McQuillen is a Portfolio Manager and the Head of the Environmental, Social and Governance (ESG) Investment Program at ClearBridge Investments. Mary Jane co-manages the ClearBridge Sustainability Leaders Strategy, as well as a number of other active equity ESG strategies. She has been with the ESG program at a predecessor firm since 1996 and has 24 years of investment industry experience, and is a member of the ClearBridge Investments Proxy Committee.

Mary Jane serves on the Board of Directors for the Sustainable Investments Institute (Si2). She is a former Board member of the IRRC Institute and the CFA Society New York. Mary Jane is a member of the UN Principles for Responsible Investment (UN PRI) Listed Equities Steering Committee and the ESG Integration Sub-Committee. 

Mary Jane received her MBA in Finance from Columbia Business School. She holds a BS in Finance from Fordham University.