The US SIF works to ensure that the US capital markets play an active role in driving investments toward more sustainable and equitable outcomes. The US SIF and its members are the leading voices of sustainable investment. We aim to create a level playing field in Capital Markets which includes increased transparency and disclosure across the industry.
The US SIF’s 200+ Members represent trillions in assets under management. The Membership includes actors across the entire capital markets value chain– including asset owners, financial advisors, asset managers, institutional investors, community investment institutions and data & service providers.

Meet the Team

A Diverse Team Advancing Sustainable Investment Practices in the United States

Maria Lettini

CEO

Maria joined the US SIF as  Chief Executive Officer in May 2023.   She is an innovative leader within the field of sustainability and finance and is recognized for building meaningful partnerships across the value chain of global institutional investors, corporates, policymakers, multi-national organizations, and other related stakeholders to address some of the world’s most critical, and financially material, environmental and social challenges. 

Bryan McGannon

Managing Director

Bryan serves as US SIF's Managing Director. Bryan leads the staff on executing the organization's strategic priorities and is US SIF's lead representative advancing the interests and perspective of the sustainable investment community with policymakers and stakeholders.

Jennifer Coombs

Head of Content and Development

As Head of Content & Development, Jenny leads US SIF’s educational programs and member engagement initiatives, developing impactful sustainable investing content and partnerships to support and grow the investment community.
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