| W.M. Keck Foundation | 4 | $6.3m |
| Bill & Melinda Gates Foundation | 5 | $4.6m |
| John Templeton Foundation | 7 | $4.0m |
| SCHWAB CHARITABLE FUND | 2 | $3.7m |
| Charles Koch Foundation | 3 | $3.3m |
| ARGYROS FAMILY FOUNDATION | 2 | $2.1m |
| JOHN E FETZER INSTITUTE INC | 2 | $1.4m |
| THE FLETCHER JONES FOUNDATION | 1 | $900.0k |
| ORANGE COUNTY COMMUNITY FOUNDATION | 2 | $342.9k |
| CHUCK LORRE FAMILY FOUNDATION | 2 | $260.0k |
| Arnold Ventures (Laura and John Arnold Foundation) | 2 | $253.2k |
| Ahmanson Foundation | 4 | $250.0k |
| American Heart Association Inc | 1 | $154.0k |
| THE PATRICK J MCGOVERN FOUNDATION INC | 1 | $150.0k |
| Research Corporation dba Research Corporation for Science Advancement | 2 | $150.0k |
| AMERICAN ENDOWMENT FOUNDATION | 2 | $113.5k |
| MARIN COMMUNITY FOUNDATION | 2 | $110.0k |
| The Hearst Foundation | 1 | $100.0k |
| NATIONAL PHILANTHROPIC TRUST | 2 | $97.5k |
| Silicon Valley Community Foundation | 2 | $90.5k |
| ARNOLD AND MABEL BECKMAN FOUNDATION | 2 | $52.0k |
| CALIFORNIA COMMUNITY FOUNDATION | 1 | $50.0k |
| APEX FOUNDATION | 2 | $50.0k |
| The Spencer Foundation | 1 | $49.0k |
| The Oregon Community Foundation | 2 | $40.4k |
| THE US CHARITABLE GIFT TRUST | 1 | $30.0k |
| GS DONOR ADVISED PHILANTHROPY FUND FOR WEALTH MANAGEMENT INC | 1 | $25.2k |
| VANGUARD CHARITABLE ENDOWMENT PROGRAM | 1 | $25.0k |
| GREATER HOUSTON COMMUNITY FOUNDATION | 1 | $25.0k |
| THE GRABLE FOUNDATION | 1 | $21.1k |
| Donors Trust Inc | 1 | $11.0k |
| CHARITIES AID FOUNDATION AMERICA | 1 | $10.6k |
| COMMUNITIES FOUNDATION OF TEXAS INC | 1 | $10.0k |
| THOMAS & DOROTHY LEAVEY FOUNDATION | 3 | $9.0k |
| SEATTLE FOUNDATION | 2 | $8.1k |
| THE SAN DIEGO FOUNDATION | 1 | $7.0k |
| AMERICAN GIFT FUND | 1 | $7.0k |
| Enterprise Holdings Foundation | 1 | $2.5k |
| THE FREEDOM FORUM INC | 1 | $1.0k |
| FIDELITY FOUNDATION | 1 | $500 |