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Photo of Brian L. Trelstad

Unit: General Management

Contact:

(617) 495-6963

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Areas of Interest

  • nonprofit
  • social change
  • social enterprise
  • social entrepreneurship
  • sustainable and impact investing

Additional Topics

  • business and poverty
  • capital markets
  • corporate social responsibility
  • education
  • emerging markets
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  • sustainability
  • venture capital

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  • private equity (other)
  • service industry
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  • India
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  • United Kingdom
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Brian L. Trelstad

Senior Lecturer of Business Administration

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Brian Trelstad is a partner and board member in the New York offices of Bridges Fund Management, a global impact investment firm based in London and New York.  Brian has over 15 years of impact investing experience, having served until 2012 as the Chief Investment Officer of Acumen, where he oversaw investments into companies that were delivering health, water, energy, and agriculture services to economic base of the pyramid in South Asia and Sub-Saharan Africa. As CIO, he was a member of Acumen’s management team and helped build out the network of country operations that worked closely with the entrepreneurs.

Brian was also a co-founding board member of the Aspen Network of Development Entrepreneurs (ANDE) and was one of the principal architects of the Impact Reporting and Investment Standards (IRIS). Prior to Acumen Fund, Brian worked as a consultant at McKinsey & Company, was a lead environmental staff person at the Corporation for National Service, and has been involved in a range of non-profit and for-profit start ups.  Brian serves on the board of VisionSpring, Guidestar, and New Jersey Future and is a Henry Crown Fellow of the Aspen Institute.

Brian has an undergraduate degree from Harvard University, an MBA from Stanford’s Graduate School of Business, and an MA in City & Regional Planning from the University of California at Berkeley. Since 2012, he has taught a graduate course in social entrepreneurship at Princeton University’s Woodrow Wilson School.  

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PublicationsResearch SummaryTeaching

Journal Articles

  1. Article | Harvard Business Review (website)

    Making Sense of the Many Kinds of Impact Investing

    Brian Trelstad

    The article discusses the factors to consider when seeking to practice impact investing, which include the kind of impact preferred by the investor, the intensity and immediacy of impact, and the impact risk profile.

    Keywords: ethical investments; investment policy;

    Citation:

    Trelstad, Brian. "Making Sense of the Many Kinds of Impact Investing." Harvard Business Review (website) (January 28, 2016), 2–5.  View Details
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  2. Article | Capitalism and Society

    Impact Investing: A Brief History

    Brian Trelstad

    Over the last decade, impact investing has become an increasingly-discussed topic in the realms of both business and public policy. Impact investors are motived by a desire to advance social or environmental goals and an intuition that pursuing two goals at once - investment returns and social or environmental returns - is more effective than keeping them separate. This article reviews the recent history of impact investing, addresses some of the issues confounding the nascent field, and offers a few definitions that might bring more rigor and clarity to what remains, as yet, a simultaneously confusing and promising investment strategy.

    Keywords: impact investing;

    Citation:

    Trelstad, Brian. "Impact Investing: A Brief History." Capitalism and Society 11, no. 2 (December 2016).  View Details
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  3. Article | Innovations: Technology, Governance, Globalization

    Mission, Margin, Mandate: The Many Paths to Scale for Impact Investees

    Brian Trelstad and Robert Katz

    Citation:

    Trelstad, Brian, and Robert Katz. "Mission, Margin, Mandate: The Many Paths to Scale for Impact Investees." Innovations: Technology, Governance, Globalization 6, no. 3 (Summer 2011): 41–53.  View Details
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  4. Article | Kauffman Fellows Report

    Patient Capital in an Impatient World

    Brian Trelstad

    Citation:

    Trelstad, Brian. "Patient Capital in an Impatient World." Kauffman Fellows Report 1 (2010).  View Details
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  5. Article | Innovations: Technology, Governance, Globalization

    Simple Measures for Social Enterprise

    Brian Trelstad

    Citation:

    Trelstad, Brian. "Simple Measures for Social Enterprise." Innovations: Technology, Governance, Globalization 3, no. 3 (Summer 2008): 105–118.  View Details
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  6. Article | Stanford Social Innovation Review

    The Ratings Game: Evaluating the three groups that rate the charities

    Brian Trelstad, Stephanie Lowell and Bill Meehan

    Keywords: charity; Charity Navigator; donors; UNICEF;

    Citation:

    Trelstad, Brian, Stephanie Lowell, and Bill Meehan. "The Ratings Game: Evaluating the three groups that rate the charities." Stanford Social Innovation Review 3, no. 2 (Summer 2005).  View Details
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  7. Article | Berkeley Planning Journal

    Georgia Regional Transportation Authority: A Case Study of an Innovative Regional Planning Institution

    Brian Trelstad

    The Georgia Regional Transportation Authority (GRTA), a new regional planning institution, is a governor-appointed body of 15 regional leaders with broad authority over land use and transportation planning throughout the state. Created in the summer of 1 999, GRTA emerged from a public-private process that sought to reform transportation planning in the Atlanta region, but its authority far surpasses what was initially conceived by that public-private effort, the Metropolitan Atlanta Transportation Initiative(MATI). Thispoper is a case study of the MATI process and the emergence of GRTA that illustrates in some detail theformation ofa new and innovative regional planning institution. What it lacks in comparative breadth, it supplies in step-by-step analysis of how a group of business people and civic leaders reformed the planning process in a major American metropolitan region. One tentative conclusion is that theprivate sector can play a major role in regional planning, as they did in the development ofthis new regional planning institution. The case study also illustrates that while GRTA's initialfocus will be to solve Atlanta's transportation problems, GRTA may become an implementation vehicle for the Georgia Planning Act, a comprehensive but underutilized statewide land use planning statute.

    Citation:

    Trelstad, Brian. "Georgia Regional Transportation Authority: A Case Study of an Innovative Regional Planning Institution." Berkeley Planning Journal 14 (2000): 23–45.  View Details
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  8. Article | Landscape Journal

    Little Machines in Their Gardens: A History of School Gardens in America, 1891 to 1920

    Brian Trelstad

    “Little Machines in their Gardens: A History of School Gardens in America, 1891 to 1920” explores the rise and decline of the school garden movement in the United States. The paper first documents the early history of the gardens and establishes them as a national phenomenon that weaves together Progressive governance, the Back to Nature Movement, and early education reform. The paper then seeks to explain the sudden demise of the school gardens after 1920 by exploring the changes in American urban life and the nature of the professions that promoted the gardens.

    Citation:

    Trelstad, Brian. "Little Machines in Their Gardens: A History of School Gardens in America, 1891 to 1920." Landscape Journal 16, no. 2 (Fall 1997): 161–173.  View Details
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  9. Article | National Civic Review

    Why the environment needs national service

    Brian Trelstad

    Citation:

    Trelstad, Brian. "Why the environment needs national service." National Civic Review 86, no. 3 (Fall 1997).  View Details
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  10. Article | Urban Ecosystems

    The Presidio Trust legislation: preservation or privatization?

    Brian Trelstad

    This analysis of the Presidio Trust legislation places the recent developments on the Presidio in the context of a century and a half of environmental planning. By first exploring the Presidio's history, and then tracing the more recent legislative background to the Presidio Trust, the author establishes a clear frame through which to explore the current challenges that face the Presidio Trust. This paper argues that history, legislative intent, and specific legal precedent will protect the Presidio from being "sold off," despite growing local concerns that the Presidio Trust's mandate to become financially self-sufficient within 15 years may drive the public's interests from the park.

    Citation:

    Trelstad, Brian. "The Presidio Trust legislation: preservation or privatization?" Urban Ecosystems 1, no. 3 (July 1997): 135–153.  View Details
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  11. Article | New Directions for Higher Education

    Student environmental organizations

    Brian Trelstad and Julian Keniry

    On campuses around the country, student groups are discovering the benefits of working on projects in cooperation with campus officials.

    Citation:

    Trelstad, Brian, and Julian Keniry. "Student environmental organizations." New Directions for Higher Education, no. 77 (Spring 1992).  View Details
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Book Chapters

  1. Chapter | New Frontiers of Philanthropy | 2014

    The Elusive Quest for Impact: The Evolving Practice of Social Impact Measurement

    Brian Trelstad

    Citation:

    Trelstad, Brian. "The Elusive Quest for Impact: The Evolving Practice of Social Impact Measurement." Chap. 22 in New Frontiers of Philanthropy: A Guide to the New Tools and New Actors that Are Reshaping Global Philanthropy and Social Investing, edited by Lester M. Salamon, 583–603. Oxford University Press, 2014.  View Details
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