| Leona M & Harry B Helmsley Charitable Trust | 4 | $0 |
| Ford Foundation | 8 | $22.3m |
| Gordon and Betty Moore Foundation | 37 | $17.3m |
| Bill & Melinda Gates Foundation | 15 | $5.8m |
| Alfred P. Sloan Foundation | 15 | $2.9m |
| SCHWAB CHARITABLE FUND | 2 | $2.8m |
| JPB Foundation (Freedom Together Foundation) | 6 | $2.2m |
| The Kresge Foundation | 12 | $2.0m |
| Silicon Valley Community Foundation | 3 | $2.0m |
| Doris Duke Foundation | 7 | $1.9m |
| Carnegie Corporation of New York | 8 | $1.7m |
| William and Flora Hewlett Foundation | 9 | $1.6m |
| CALIFORNIA COMMUNITY FOUNDATION | 1 | $1.5m |
| THE ERIC AND WENDY SCHMIDT FUND FOR STRATEGIC INNOVATION | 1 | $1.5m |
| Wallace Foundation | 1 | $1.5m |
| THE KAVLI FOUNDATION | 5 | $1.3m |
| Arnold Ventures (Laura and John Arnold Foundation) | 12 | $1.2m |
| WARREN ALPERT FOUNDATION | 2 | $1.0m |
| EAST BAY COMMUNITY FOUNDATION | 1 | $1.0m |
| W. K. Kellogg Foundation | 9 | $771.6k |
| THE HEISING-SIMONS FOUNDATION | 3 | $625.0k |
| David and Lucile Packard Foundation | 6 | $600.0k |
| Henry Luce Foundation | 6 | $572.6k |
| Knight Foundation | 1 | $500.0k |
| Simons Foundation | 6 | $430.7k |
| THE JOHN A HARTFORD FOUNDATION INC | 9 | $426.4k |
| California Healthcare Foundation | 3 | $365.0k |
| Rockefeller Foundation | 3 | $350.0k |
| California Endowment | 4 | $350.0k |
| RITA ALLEN FOUNDATION INC | 7 | $325.0k |
| THE SAN FRANCISCO FOUNDATION | 1 | $300.0k |
| VALHALLA FOUNDATION | 1 | $294.7k |
| W.M. Keck Foundation | 4 | $261.9k |
| RUSSELL SAGE FOUNDATION | 3 | $236.7k |
| The Commonwealth Fund | 9 | $230.0k |
| John D and Catherine T MacArthur Foundation | 1 | $200.0k |
| J. Paul Getty Trust | 2 | $200.0k |
| FOUNDATION TO PROMOTE OPEN SOCIETY | 1 | $200.0k |
| JAMES S MCDONNELL FOUNDATION | 1 | $200.0k |
| John Templeton Foundation | 3 | $160.8k |
| BAINUM FAMILY FOUNDATION | 1 | $150.0k |
| THE ARTHUR M BLANK FAMILY FOUNDATION | 1 | $150.0k |
| The Nemours Foundation | 1 | $150.0k |
| The Cynthia & George Mitchell Foundation | 2 | $145.0k |
| VANGUARD CHARITABLE ENDOWMENT PROGRAM | 2 | $131.3k |
| THE PATRICK J MCGOVERN FOUNDATION INC | 1 | $100.0k |
| Joyce Foundation | 3 | $100.0k |
| COMMUNITIES FOUNDATION OF TEXAS INC | 1 | $100.0k |
| Annie E. Casey Foundation | 1 | $100.0k |
| STEVEN & ALEXANDRA COHEN FOUNDATION INC | 1 | $87.5k |