| The Larson Land Foundation | | Cincinnati, OH | Local | 7 | 2024 | $748,000 |
| National Audubon Society Inc | | New York, NY | National | 6 | 2024 | $90,004 |
| Mills Foundation Inc | | Skillman, NJ | National | 2 | 2024 | $62,000 |
| Mary Owen Borden Memorial Fund | | Rumson, NJ | Local | 4 | 2024 | $50,000 |
| George H and Estelle M Sands Foundation | | Princeton, NJ | Local | 5 | 2024 | $40,000 |
| Lawson Valentine Foundation | | Hartford, CT | National | 7 | 2024 | $25,000 |
| Leen Foundation Inc | | Princeton, NJ | National | 4 | 2024 | $18,500 |
| Edward T Cone Foundation | | New York, NY | Local | 3 | 2024 | $15,000 |
| Robert Wood Johnson Foundation | | Princeton, NJ | National | 5 | 2024 | $3,875 |
| Rowland Family Charitable Trust | | Woodstock, VT | National | 1 | 2024 | $3,500 |
| Rita Morgan Charitable Foundation Inc | | Aventura, FL | National | 3 | 2024 | $2,000 |
| Charlton Foundation Inc | | Vero Beach, FL | National | 1 | 2024 | $1,000 |
| William Penn Foundation | | Philadelphia, PA | Local | 4 | 2023 | $565,000 |
| Pseg Foundation Inc | | Newark, NJ | Local | 3 | 2023 | $27,000 |
| Kentfields Foundation Inc | | Baltimore, MD | National | 2 | 2023 | $15,000 |
| Atlantic Foundation | | Hamilton, NJ | Local | 1 | 2023 | $10,000 |
| Bristol-Myers Squibb Foundation Inc | | Princeton, NJ | Local | 5 | 2023 | $3,900 |
| Wm Bryce Thompson Foundation | | Princeton, NJ | Local | 2 | 2023 | $2,100 |
| The Grantham Foundation for the Protection of the Environment | | Boston, MA | National | 1 | 2022 | $500,000 |
| George Graham Smith & Elizabeth Galloway Smith Foundation Inc | | Hopewell, NJ | National | 3 | 2022 | $15,000 |
| Rita Allen Foundation | | Princeton, NJ | National | 2 | 2022 | $15,000 |
| J Robert and Barbara a Hiller Foundation Inc | | Princeton, NJ | Local | 5 | 2022 | $7,000 |
| Educational Ventures Inc | | Princeton, NJ | National | 6 | 2022 | $2,750 |
| Edward E and Marie L Matthews Foundation | | Wilmington, DE | National | 2 | 2022 | $1,400 |
| Drew and Kathy Rankin Family Foundation Inc | | Morristown, NJ | National | 1 | 2022 | $1,000 |
| Jeremy and Hannelore Grantham Environmental Trust | | Boston, MA | National | 1 | 2021 | $700,000 |
| Watershed Institute Inc | | Pennington, NJ | Local | 2 | 2021 | $16,273 |
| Emily & John Harvey Foundation C/O Thomas B Harvey | | | — | 3 | 2021 | $1,000 |
| Pratt Family Foundation Inc | | Oak Ridge, NC | Local | 1 | 2021 | $500 |
| Geraldine R Dodge Foundation Incorporated | | Newark, NJ | Local | 2 | 2020 | $75,000 |
| Hyde and Watson Foundation | | Warren, NJ | Local | 1 | 2020 | $6,000 |
| The Aspen Grove Fondation | | Coatesville, PA | National | 1 | 2020 | $1,000 |
| Independence Seaport Museum | | Philadelphia, PA | — | 2 | 2018 | $51,500 |
| The Darwin Foundation Inc | | | — | 1 | 2018 | $300 |
| National Wildlife Federation | | Reston, VA | National | 1 | 2017 | $8,650 |