Bill Clapp is a prominent figure in international philanthropy and impact investing, co-founding the Seattle International Foundation in 2008, which has facilitated over $20 million in grants to high-impact organizations, primarily focused on Central America. Clapp also played a key role in establishing Global Washington, serving as its first chairman after co-founding the organization in 2008, and was a co-founder and executive director of Global Partnerships from 1994 to 2006, which focuses on impact investment across Latin America and Africa. Clapp's earlier career includes founding Matthew G. Norton Company, where Clapp served as CEO, and co-founding the Initiative for Global Development alongside William H. Gates, Sr. Additionally, Clapp has held various board positions, including with Weyerhaeuser and Alaska Airlines.