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Marcy McCullaugh

Director, Sustainability Research, and Director, Sustainability and Stewardship
Parnassus Investments
Marcy McCullaugh is the director of sustainability research and a director on the firm’s sustainability and stewardship team. She is responsible for the integration of sustainability research into the firm’s investment process and for providing strategic support for the firm’s sustainability and stewardship program. She is a member of the firm’s Proxy Committee and sits on the firm’s sector research teams.

Prior to joining Parnassus Investments in 2024, Marcy was the director of investment stewardship at Schwab Asset Management. Before moving into the investment stewardship space, Marcy worked at a small impact investing firm and was a senior advisor on the sustainability and public policy team at Chevron. Marcy previously pursued an academic career with a focus on post-Soviet politics.

Marcy received her bachelor’s degree in English literature with a minor in Russian from Swarthmore College. She has a master’s degree from Harvard University in Russian and Eurasian Studies. Marcy also holds a doctorate in political science from the University of California, Berkeley.

Participated in

session

How AI is Changing Investor Analysis of Corporate Disclosure

June 23, 2026
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