| The Keith Campbell Foundation for the Environment Inc | | Bethesda, MD | National | 6 | 2024 | $287,297 |
| The John G & Jean R Gosnell Foundation Inc | | Chevy Chase, MD | National | 7 | 2024 | $210,000 |
| Earthshare Chapters Inc | | Washington, DC | National | 8 | 2024 | $186,734 |
| 1988 Irrevocable Cochrane Memorial Trust | | Saint Paul, MN | Local | 4 | 2024 | $175,000 |
| Veverka Family Foundation Inc | | Bethesda, MD | Local | 4 | 2024 | $117,000 |
| Chesapeake Bay Trust | | Tampa, FL | Local | 1 | 2024 | $103,243 |
| The Morningstar Philanthropic Foundation | | Bethesda, MD | National | 5 | 2024 | $100,000 |
| Casey Trees | | Washington, DC | National | 2 | 2024 | $92,694 |
| Venable Baetjer and Howard Foundation | | Baltimore, MD | National | 6 | 2024 | $85,000 |
| Nelson Talbott Foundation | | Washington, DC | National | 6 | 2024 | $58,500 |
| Agua Fund Inc | | Front Royal, VA | National | 5 | 2024 | $55,500 |
| Shirley Brownrigg Charitable Tr Uw Fbo Shirley Brownrigg | | Williamstown, MA | National | 7 | 2024 | $40,000 |
| Moody Family Foundation | | Bargersville, IN | National | 5 | 2024 | $37,375 |
| C F Holdship Charitable Trust | | Pittsburgh, PA | Local | 3 | 2024 | $35,000 |
| Brendan & Helen Bechtel Foundation | | Washington, DC | Local | 1 | 2024 | $25,000 |
| Frederick Henry Prince Trust 7/9/47 Nect | | Chicago, IL | National | 1 | 2024 | $20,000 |
| Omidyar Network Fund Inc | | San Francisco, CA | National | 5 | 2024 | $12,000 |
| Strong Foundation of New York | | New York, NY | Local | 5 | 2024 | $9,000 |
| Jean T and Heyward G Pelham Foundation | | Wilmington, DE | National | 3 | 2024 | $7,500 |
| Walter and Karla Goldschmidt Foundation | | Glencoe, IL | Local | 6 | 2024 | $5,500 |
| Semrod Family Private Foundation | | Naples, FL | National | 5 | 2024 | $4,500 |
| Charles and Barbara Dewey Family Foundation | | Osprey, FL | Local | 4 | 2024 | $3,500 |
| William & Karen Tell Foundation | | Wilmington, DE | National | 4 | 2024 | $2,500 |
| Jerome S and Grace H Murray Foundation | | Wilmington, DE | National | 1 | 2024 | $1,000 |
| Westport Fund | | Washington, DC | National | 2 | 2024 | $1,000 |
| George a & Carmel D Aman Memorial Trust | | Hyattsville, MD | Local | 2 | 2024 | $600 |
| Jelks Family Foundation Inc | | Washington, DC | National | 1 | 2024 | $500 |
| Regal Foundation | | Knoxville, TN | Local | 1 | 2024 | $307 |
| Morris and Gwendolyn Cafritz Foundation | | Washington, DC | Local | 4 | 2023 | $185,000 |
| England Family Foundation Inc | | Bethesda, MD | Local | 1 | 2023 | $1,500 |
| Bancroft Foundation Inc | | Baltimore, MD | Local | 3 | 2022 | $30,000 |
| Robert and Dee Leggett Foundation | | Great Falls, VA | National | 2 | 2022 | $30,000 |
| The Bdm Family Foundation | | Wilmington, DE | National | 4 | 2022 | $20,000 |
| Brown Advisory Charitable Foundation Inc | | Baltimore, MD | Local | 2 | 2022 | $1,250 |
| Scott Family Fund | | Mill Valley, CA | Local | 1 | 2022 | $1,000 |
| Peoples Bank Foundation Inc | | Marietta, OH | Local | 1 | 2022 | $1,000 |
| Betty and Wes Foster Family Foundation | | Chantilly, VA | National | 4 | 2021 | $39,000 |
| Clif Bar Family Foundation | | Saint Helena, CA | National | 4 | 2021 | $13,000 |
| Kpmg U S Foundation Inc | | Montvale, NJ | National | 1 | 2021 | $10,000 |
| The Coca-Cola Foundation Inc | | Atlanta, GA | National | 1 | 2020 | $50,000 |
| Abbie Norman Prince Tr Ud 022649 2Nd Clause of Will Dt 122947 Nect | | Chicago, IL | Local | 2 | 2020 | $40,000 |
| Crescent Cities Charities Inc | | Oxon Hill, MD | National | 1 | 2020 | $10,000 |
| Kiwanis International Inc | | Washington, DC | Local | 1 | 2020 | $5,000 |
| Doris M Carter Family Foundation | | Sarasota, FL | Local | 1 | 2020 | $5,000 |
| Neilom Foundation Inc | | Bethesda, MD | Local | 1 | 2020 | $3,000 |
| Hellendall Family Foundation of North Carolina Inc | | Chapel Hill, NC | Local | 1 | 2020 | $2,500 |
| National Park Foundation | | Washington, DC | National | 2 | 2019 | $100,055 |
| Monumental Sports & Entertainment Foundation | | Washington, DC | National | 2 | 2019 | $44,825 |
| Austin and Lauren Fite Foundation Co De Registered Agents & Incorporators | | | — | 1 | 2019 | $1,000 |
| Arenstein Foundation | | | — | 1 | 2019 | $250 |
| Wallace Genetic Foundation II Inc | | Washington, DC | Local | 1 | 2018 | $100,000 |
| Frederick Henry Prince Testamentary Trust | | Chicago, IL | National | 1 | 2018 | $25,000 |
| United Way of the National Capital Area | | Vienna, VA | Local | 2 | 2018 | $14,981 |
| Patagoniaorg | | | National | 1 | 2018 | $5,000 |
| Friedman Family Charitable Trust | | Washington, DC | Local | 1 | 2018 | $5,000 |
| Rotary Foundation of Washington DC | | Washington, DC | Local | 1 | 2017 | $20,000 |