Mary Jane McQuillen is a Portfolio Manager and the Head of the Environmental, Social and Governance (ESG) Investment Program at ClearBridge Advisors. Her responsibilities include integrating ESG research into the stock-selection process for institutional and high net worth client portfolios. Mary Jane has been with the ESG program at a predecessor firm since 1996 and has 14 years of investment industry experience.

Mary Jane serves on the Board of Directors for the New York Society of Security Analysts (NYSSA) and is the former Chair of its Sustainable Investing Committee. She is also a Board member of the Social Investment Forum (SIF), the national nonprofit association dedicated to advancing and growing socially responsible investing (SRI), and is a Steering Committee member of the SIF's Sustainable Investment Research Analyst Network (SIRAN) working group.

Mary Jane is a long-standing and active member of the United Nations Environment Program Finance Initiative (UNEP FI) Asset Management Working Group (AMWG), which is a collaboration of asset managers from around the world who seek to integrate ESG into investment decision-making on a global level.

She received her MBA in Finance from Columbia Business School, where she serves on the Bernstein Center on Leadership & Ethics Board and is a former Co-Chair. She holds a BS in Finance from Fordham University.

In 2008, Mary Jane was named a "Rising Star of Corporate Governance" by the Millstein Center for Corporate Governance and Performance at the Yale School of Management. She is also a member of Bpeace, a volunteer organization that works to introduce sustainable business skills to women in Rwanda, Afghanistan, and the Middle East.