| Leona M & Harry B Helmsley Charitable Trust | 1 | $0 |
| Good Ventures Foundation | 4 | $26.7m |
| Bill & Melinda Gates Foundation | 13 | $15.1m |
| Arnold Ventures (Laura and John Arnold Foundation) | 48 | $9.1m |
| Robert Wood Johnson Foundation | 33 | $6.4m |
| Wallace Foundation | 12 | $6.3m |
| Conrad N Hilton Foundation | 9 | $4.0m |
| Walton Family Foundation | 8 | $3.3m |
| THE RALPH C WILSON JR FOUNDATION | 5 | $1.9m |
| Heinz Endowments | 7 | $1.9m |
| California Healthcare Foundation | 3 | $1.5m |
| Gordon and Betty Moore Foundation | 4 | $1.4m |
| Richard King Mellon Foundation | 4 | $1.2m |
| SCHWAB CHARITABLE FUND | 2 | $808.7k |
| Carnegie Corporation of New York | 5 | $694.3k |
| Pew Charitable Trusts | 3 | $644.3k |
| William and Flora Hewlett Foundation | 2 | $626.4k |
| SMITH RICHARDSON FOUNDATION INC | 2 | $533.7k |
| VANGUARD CHARITABLE ENDOWMENT PROGRAM | 2 | $410.5k |
| NEW YORK STATE HEALTH FDN D/B/A NEW YORK HEALTH FOUNDATION | 3 | $350.5k |
| NATIONAL ENDOWMENT FOR FINANCIAL EDUCATION | 2 | $323.7k |
| Kauffman Foundation | 2 | $300.0k |
| Lumina Foundation | 2 | $255.0k |
| James Irvine Foundation | 1 | $250.0k |
| SURGO FOUNDATION US | 2 | $250.0k |
| ARCHSTONE FOUNDATION | 3 | $233.1k |
| The Commonwealth Fund | 3 | $198.3k |
| Builders Initiative Foundation | 1 | $195.0k |
| ROBIN HOOD FOUNDATION | 1 | $185.0k |
| CALIFORNIA COMMUNITY FOUNDATION | 2 | $164.0k |
| THE ROSALINDE AND ARTHUR GILBERT FOUNDATION | 1 | $100.0k |
| Joyce Foundation | 1 | $100.0k |
| THE CALIFORNIA WELLNESS FOUNDATION | 1 | $75.0k |
| Ahmanson Foundation | 1 | $50.0k |
| EAST BAY COMMUNITY FOUNDATION | 1 | $50.0k |
| HILLMAN FAMILY FOUNDATIONS | 1 | $48.0k |
| AMERICAN ENDOWMENT FOUNDATION | 1 | $45.0k |
| NATIONAL PHILANTHROPIC TRUST | 2 | $43.0k |
| NEWTON & ROCHELLE BECKER CHARITABLE TRUST | 2 | $40.0k |
| GS DONOR ADVISED PHILANTHROPY FUND FOR WEALTH MANAGEMENT INC | 1 | $35.0k |
| Annenberg Foundation | 1 | $25.0k |
| MARGUERITE CASEY FOUNDATION | 1 | $20.0k |