1. The William and Flora Hewlett Foundation $243.35 M
2. Oak Foundation $160.42 M
3. John D. and Catherine T. Macarthur Foundation $133.96 M
4. The David and Lucile Packard Foundation $119.14 M
5. Sea Change Foundation $76.15 M
6. Bloomberg Philanthropies, Inc. $68.09 M
7. The Kresge Foundation $49.78 M
8. Barr Foundation $47.24 M
9. Climateworks Foundation $44.92 M
10. The Heising-Simons Foundation $44.06 M
11. Academy for Motion Arts Sciences $37.58 M
12. The Jpb Foundation $37.33 M
13. Mcknight Foundation $36.69 M
14. Robertson Foundation $34.16 M
15. Arcadia $31.44 M
16. Silicon Valley Community Foundation $27.18 M
17. Academy Foundation $22.83 M
18. Doris Duke Charitable Foundation $22.60 M
19. The Grantham Foundation for the Protection of the Environment $21.51 M
20. The Skoll Foundation $18.23 M
21. The Oak Foundation U.S.A. $15.97 M
22. Gordon and Betty Moore Foundation $15.82 M
23. The Benificus Foundation $15.44 M
24. Bill & Melinda Gates Foundation $15.00 M
25. Combined Jewish Philanthropies of Greater Boston, Inc. $13.28 M

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