| Bill & Melinda Gates Foundation | 3 | $3.0m |
| Bloomberg Family Foundation Inc | 1 | $1.0m |
| Andrew W Mellon Foundation | 4 | $980.0k |
| William and Flora Hewlett Foundation | 7 | $845.0k |
| Conrad N Hilton Foundation | 7 | $700.0k |
| Lilly Endowment Inc | 8 | $630.3k |
| David and Lucile Packard Foundation | 3 | $630.0k |
| TIDES FOUNDATION | 1 | $500.0k |
| Robert W. Woodruff Foundation | 3 | $475.0k |
| Alfred P. Sloan Foundation | 5 | $434.7k |
| Robert Wood Johnson Foundation | 4 | $406.5k |
| Lumina Foundation | 1 | $400.0k |
| SEATTLE FOUNDATION | 2 | $369.3k |
| John D and Catherine T MacArthur Foundation | 4 | $327.2k |
| Cleveland Foundation | 3 | $322.4k |
| William Penn Foundation | 4 | $291.0k |
| Annie E. Casey Foundation | 1 | $250.0k |
| The Kresge Foundation | 6 | $249.0k |
| THE SKILLMAN FOUNDATION | 1 | $150.0k |
| Wallace Foundation | 3 | $150.0k |
| Rockefeller Foundation | 3 | $141.5k |
| Rockefeller Brothers Fund | 3 | $128.3k |
| James Irvine Foundation | 3 | $120.0k |
| Henry Luce Foundation | 3 | $120.0k |
| Heinz Endowments | 7 | $98.0k |
| Doris Duke Foundation | 3 | $91.0k |
| M.J. Murdock Charitable Trust | 3 | $90.0k |
| Surdna Foundation | 3 | $75.0k |
| Ahmanson Foundation | 2 | $60.0k |
| California Healthcare Foundation | 3 | $60.0k |
| The George Gund Foundation | 2 | $60.0k |
| THE BUSH FOUNDATION | 2 | $60.0k |
| THE HARRY AND JEANETTE WEINBERG FOUNDATION INC | 2 | $52.0k |
| Starr Foundation | 2 | $50.0k |
| THE MARCUS FOUNDATION INC | 2 | $50.0k |
| WEINGART FOUNDATION | 4 | $49.5k |
| COMMUNITY FDN OF GREATER DES MOINES F/K/A GREATER DES MOINES COMMUNITY FDN | 1 | $47.6k |
| Joyce Foundation | 3 | $45.0k |
| Houston Endowment | 4 | $43.9k |
| Meyer Memorial Trust | 2 | $42.0k |
| The Commonwealth Fund | 2 | $39.9k |
| Leona M & Harry B Helmsley Charitable Trust | 2 | $35.1k |
| Otto Bremer Trust | 3 | $32.0k |
| McKnight Foundation | 3 | $32.0k |
| New York Community Trust | 1 | $30.0k |
| J. Paul Getty Trust | 1 | $30.0k |
| THE CALIFORNIA WELLNESS FOUNDATION | 2 | $27.0k |
| CLAUDE WORTHINGTON BENEDUM FOUNDATION | 2 | $26.0k |
| Silicon Valley Community Foundation | 1 | $25.5k |
| Omidyar Network Fund Inc | 1 | $25.0k |