Forbes names the top 10 U.S. philanthropists by share and sums: 10) Jeff Bezos & Lauren Sanchez, 9) Sergey Brin, 8) Mark Zuckerberg & Priscilla Chan, 7) Steve & Connie Ballmer, 6) Marilyn Simons & family, 5) George Soros, 4) Michael Bloomberg, 3) MacKenzie Scott, 2) Bill Gates & Melinda French Gates, 1) Warren Buffett.
Warren Buffett, now 95, has long vowed to give away 99% of his fortune. He has already donated over $68 billion — including $6.3 billion last year — about 32% of his wealth so far. Buffett has said he does not want to create a lasting dynasty and has named trustees to manage his estate should his children Susie, Howie and Peter be unable to do so.