1. The William and Flora Hewlett Foundation $237.35 M
2. The Energy Foundation $109.94 M
3. The David and Lucile Packard Foundation $89.22 M
4. Sea Change Foundation $64.73 M
5. John D. and Catherine T. Macarthur Foundation $55.30 M
6. The Jpb Foundation $54.75 M
7. Oak Foundation $48.31 M
8. Howard G. Buffett Foundation $36.82 M
9. The Rockefeller Foundation $35.74 M
10. Bloomberg Family Foundation Inc $34.56 M
11. Robertson Foundation $33.50 M
12. The Mcknight Foundation $33.15 M
13. Foundation for the Carolinas $31.89 M
14. Oil and Natural Gas Corporation Limited Contributions Program $24.98 M
15. Heising-Simons Foundation $20.24 M
16. Bill & Melinda Gates Foundation $19.32 M
17. Alfred P. Sloan Foundation $18.04 M
18. The Joyce Foundation $13.59 M
19. Combined Jewish Philanthropies of Boston $13.48 M
20. Charles Stewart Mott Foundation $12.01 M
21. Climateworks Foundation $10.69 M
22. The National Lottery Community Fund $10.04 M
23. Rockefeller Brothers Fund, Inc. $9.00 M
24. Silicon Valley Community Foundation $8.78 M
25. Greenpeace Fund, Inc. $8.60 M

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