Sam Bonsey

Co-Founder and Executive Director, The ImPact | Vice Chair, Keller Enterprises

Sam Bonsey is Co-Founder and Executive Director of The ImPact, a global network of families committed to making more impact investments more effectively. Sam is also Vice-Chair of the board of directors and Chair of the investment committee of Keller Enterprises, a family office committed to values-aligned investing. In 2022, Sam became Chair of the supervisory board of the Transformation Capital Initiative, a nonprofit dedicated to building the field of systemic investing. In 2015, Sam was recognized by Forbes as a “30 Under 30” Social Entrepreneur. In 2010, Sam co-founded the 2Seeds Network, an incubator of community-driven development projects in Tanzania; in 2019, 2Seeds merged with Spark Microgrants, on whose board Sam now serves. Sam graduated magna cum laude from Harvard College with a degree in History and Literature, focused on African postcolonial studies and Swahili. Sam happily resides in Paris with his wife and son.


Impact Investing: a Primer for Family Foundations

Posted on October 24, 2016 by Ariella Rotenberg, Sam Bonsey, The ImPact

A foundation is a powerful platform through which families can express their values in society. Yet, most families only use a small portion of their foundation assets to pursue their philanthropic missions. Funding solutions to the world's toughest challenges requires far more resources than are available through foundations' grantmaking alone… Read More