| The Brown Foundation Inc | 10 | $25.1m |
| ALBERT AND MARGARET ALKEK FOUNDATION | 7 | $14.7m |
| Silicon Valley Community Foundation | 3 | $8.3m |
| The Cullen Foundation | 1 | $6.0m |
| The Childrens Hospital Of Philadelphia | 3 | $6.0m |
| Simons Foundation | 19 | $3.2m |
| NATL CHRISTIAN CHARITABLE FDN INC | 2 | $3.0m |
| JE AND LE MABEE FOUNDATION INC | 1 | $3.0m |
| American Heart Association Inc | 3 | $2.8m |
| Bill & Melinda Gates Foundation | 3 | $2.7m |
| JPB Foundation (Freedom Together Foundation) | 3 | $2.2m |
| The Robert A Welch Foundation | 2 | $2.2m |
| THE JOHN M O'QUINN FOUNDATION | 8 | $2.2m |
| NATIONAL PHILANTHROPIC TRUST | 2 | $2.1m |
| HUFFINGTON FOUNDATION | 2 | $2.0m |
| VANGUARD CHARITABLE ENDOWMENT PROGRAM | 2 | $2.0m |
| THE ELKINS FOUNDATION | 2 | $2.0m |
| SCHWAB CHARITABLE FUND | 2 | $1.9m |
| GREATER HOUSTON COMMUNITY FOUNDATION | 2 | $1.7m |
| ARNOLD AND MABEL BECKMAN FOUNDATION | 4 | $1.6m |
| DAN L DUNCAN FOUNDATION | 2 | $1.5m |
| ROBERT J & HELEN C KLEBERG FOUNDATION | 2 | $1.2m |
| Gordon and Betty Moore Foundation | 3 | $1.2m |
| Leona M & Harry B Helmsley Charitable Trust | 7 | $1.1m |
| ADDITIONAL VENTURES FOUNDATION | 4 | $539.8k |
| Howard Hughes Medical Institute | 1 | $500.0k |
| Pew Charitable Trusts | 3 | $485.4k |
| John P McGovern Foundation | 3 | $303.0k |
| Hamill Foundation | 2 | $300.0k |
| Doris Duke Foundation | 2 | $267.5k |
| William Randolph Hearst Foundation | 1 | $250.0k |
| Wellcome Trust | 3 | $228.9k |
| The Cynthia & George Mitchell Foundation | 2 | $200.0k |
| THE GREENWALL FOUNDATION | 3 | $184.3k |
| John Templeton Foundation | 1 | $158.4k |
| Weston Family Foundation / Fondation de la famille Weston | 3 | $150.0k |
| SONTAG FOUNDATION | 1 | $137.5k |
| GS DONOR ADVISED PHILANTHROPY FUND FOR WEALTH MANAGEMENT INC | 1 | $75.0k |
| THE ESTHER A & JOSEPH KLINGENSTEIN FUND INC | 1 | $75.0k |
| THE GOLDMAN SACHS CHARITABLE GIFT FUND | 3 | $74.0k |
| Research Corporation dba Research Corporation for Science Advancement | 1 | $55.0k |
| W.M. Keck Foundation | 1 | $50.0k |
| EDWARD P EVANS FOUNDATION | 1 | $50.0k |
| Rockefeller Foundation | 1 | $50.0k |
| AMERICAN ENDOWMENT FOUNDATION | 1 | $21.2k |
| Houston Endowment | 2 | $20.0k |
| The Oregon Community Foundation | 1 | $11.0k |
| THE CIGNA GROUP FOUNDATION | 1 | $525 |
| THE PFIZER FOUNDATION INC | 2 | $500 |
| WARREN ALPERT FOUNDATION | 1 | $-148.7k |