Brian Trelstad
Bridges Fund Management
Brookline, MA

Brian Trelstad is a partner in the United States focusing on Bridges Ventures U.S. operations. Brian has more than 10 years of impact investing experience, having served until 2012 as chief investment officer of Acumen Fund. At Acumen, he oversaw $55 million of investments into companies delivering health, water, energy, and agriculture services to the economic base of the pyramid in South Asia and Sub-Saharan Africa. 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 an impact management software tool, Pulse, and 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 was involved in a range of nonprofit and for-profit start-ups. He has an undergraduate degree from Harvard University, an MBA from Stanford’s Graduate School of Business, and an MA in city and regional planning from the University of California at Berkeley. He also teaches social entrepreneurship to MA students at Princeton University’s Woodrow Wilson School. Brian was the first impact investor to go through the Kauffman Fellows Program of the Center for Venture Education, and is a Henry Crown Fellow of the Aspen Institute.