Warren Buffett $36.1bn to Bill and Melinda Gates Foundation (2006)
Helen Walton $16.4bn to Walton Family Foundation (2007)
Jeff Bezos $10bn to Bezos Earth Fund (2020)
Leona Helmsley $5.2bn to Leona and Harry Helmsley Charitable Trust (2008)
James LeVoy Sorenson $4.5bn to Sorenson Legacy Foundation (2008)
Warren Buffett $3.6bn to Susan Thompson Buffett Foundation (2006)
Mark Zuckerberg and Priscilla Chan $1.85bn to Chan Zuckerberg Foundation (2017)
Michael Bloomberg $1.8bn to Johns Hopkins University (2018)
Warren Buffett $1.3bn to Howard Buffett Foundation (2006)
Warren Buffett $1.3bn to Susan Buffett Foundation (2006)