Bill Clarke, Founder & President

After establishing the Osprey Foundation in 2003, Bill Clarke retired from a successful career in finance to devote full time to the foundation in 2007. His work in Mayan communities in the highlands of Guatemala helped shape his passion for the current focus areas in WASH and cook stoves in the developing world. Extensive travel in an ever “shrinking” world has highlighted his pursuit of another foundation focus – ecumenical and interfaith relations. Personal contact is particularly important to him in developing a close rapport and understanding of grantees and the issues they are working to solve. In addition to his duties as president of the foundation, he serves on three boards: the Health Advisory Board of the Johns Hopkins Bloomberg School of Public Health, the Advisory Board for OSI – Baltimore as Board Chair, and the Governance Board for IMA World Health as Treasurer. Bill holds a BS degree in Finance from Lehigh University and proudly drives a Tesla and lives in a LEED Platinum home as part of his commitment to a healthy and sustainable planet.

Bonnie Clarke, Trustee, Ecumenical & Interfaith

Bonnie is a religion and languages educator with extensive experience in accompaniment in Central America.  Her personal experience in the power of religion to welcome or exclude drives her support of groups that build bridges between faiths and/or denominations and work to create communities that empower all to participate. She believes grantees in the Ecumenical and Interfaith field require a blend of spiritual, educational, and business skills that offer impactful programming and dynamic leadership in community affairs. 

Louis Boorstin, Managing Director

Louis leads the foundation’s programs on water, sanitation and hygiene (WASH) and cookstoves.  In addition to managing a portfolio of grants and impact investments, Louis works to advance these sectors through wide-scale systems change. From 2005-2013, Louis founded and led the WASH program at the Bill & Melinda Gates Foundation, building a portfolio of more than US $400 million, assembling a cross-disciplinary team, and focusing the program on non-piped sanitation. Prior to that, Louis worked for 15 years at International Finance Corporation of the World Bank Group, where he led the environmental finance team from 1997 to 2004. Louis holds a BA in economics from Yale University and an MBA and MA (Development Economics) from Stanford University.

Lauren Maher Patrick, Program Officer

Lauren supports the foundation's water, sanitation, and hygiene (WASH) program. She has over 15 years of experience in grant making covering a range of sectors including global health, education, and WASH. Lauren started her career at the Rockefeller Foundation and moved on to work with several organizations in northern California, including the Firelight Foundation and Northern California Grantmakers. Most recently, Lauren worked in Massachusetts as an independent philanthropic consultant. Lauren holds a BA in international affairs from the University of Mary Washington and an MPH from the John Hopkins Bloomberg School of Public Health.