| Bill & Melinda Gates Foundation | 56 | $48.6m |
| Arnold Ventures (Laura and John Arnold Foundation) | 19 | $26.4m |
| JPB Foundation (Freedom Together Foundation) | 16 | $21.3m |
| Good Ventures Foundation | 14 | $20.7m |
| SCHWAB CHARITABLE FUND | 2 | $19.0m |
| NATIONAL PHILANTHROPIC TRUST | 2 | $12.8m |
| William and Flora Hewlett Foundation | 21 | $12.7m |
| MATHWORKS FOUNDATION INC | 1 | $11.1m |
| Gordon and Betty Moore Foundation | 36 | $11.0m |
| VANGUARD CHARITABLE ENDOWMENT PROGRAM | 2 | $9.7m |
| Silicon Valley Community Foundation | 3 | $7.5m |
| Alfred P. Sloan Foundation | 43 | $7.3m |
| Wellcome Trust | 16 | $7.2m |
| JEWISH COMMUNAL FUND | 2 | $6.3m |
| WELLSPRING PHILANTHROPIC FUND INC | 9 | $4.8m |
| THE LEMELSON FOUNDATION | 3 | $4.7m |
| Pew Charitable Trusts | 8 | $4.0m |
| GS DONOR ADVISED PHILANTHROPY FUND FOR WEALTH MANAGEMENT INC | 1 | $2.9m |
| David and Lucile Packard Foundation | 14 | $2.8m |
| Carnegie Corporation of New York | 11 | $2.6m |
| THE ERIC AND WENDY SCHMIDT FUND FOR STRATEGIC INNOVATION | 5 | $2.5m |
| CALIFORNIA COMMUNITY FOUNDATION | 1 | $2.4m |
| APHORISM FOUNDATION C/O REALIZE CPA LLP | 1 | $1.8m |
| SEQUOIA CLIMATE FOUNDATION | 1 | $1.7m |
| THE HEISING-SIMONS FOUNDATION | 14 | $1.6m |
| HIRJI WIGGLESWORTH FAMILY FOUNDATION | 2 | $1.5m |
| Rockefeller Foundation | 7 | $1.5m |
| Walton Family Foundation | 2 | $1.4m |
| The Kresge Foundation | 6 | $1.3m |
| Howard Hughes Medical Institute | 3 | $1.3m |
| J. Paul Getty Trust | 15 | $1.2m |
| Kauffman Foundation | 6 | $1.1m |
| TIDES FOUNDATION | 1 | $1.1m |
| THE GOLDMAN SACHS CHARITABLE GIFT FUND | 6 | $1.1m |
| JEWISH COMMUNITY FOUNDATION OF SAN DIEGO | 2 | $1.1m |
| Open Society Institute | 2 | $1.1m |
| W. K. Kellogg Foundation | 2 | $1.1m |
| ROCKEFELLER PHILANTHROPY ADVISORS INC | 1 | $1.0m |
| Ford Foundation | 9 | $877.5k |
| John D and Catherine T MacArthur Foundation | 5 | $867.5k |
| Leona M & Harry B Helmsley Charitable Trust | 6 | $762.0k |
| ARNOLD AND MABEL BECKMAN FOUNDATION | 9 | $753.5k |
| Robert and Ardis James Foundation Inc | 5 | $734.2k |
| AMERICAN ENDOWMENT FOUNDATION | 2 | $733.0k |
| Boston Foundation Inc | 4 | $684.2k |
| Charles Koch Foundation | 3 | $631.7k |
| SMITH RICHARDSON FOUNDATION INC | 9 | $560.4k |
| JAMES S MCDONNELL FOUNDATION | 3 | $550.0k |
| The Morgridge Family Foundation | 5 | $522.0k |
| Andrew W Mellon Foundation | 1 | $500.0k |