| Pincus Family Foundation | | Wilmington, DE | Local | 4 | 2024 | $287,150 |
| Community Foundation for Greater New Haven | | New Haven, CT | Local | 2 | 2024 | $82,000 |
| Lewis G Schaeneman Jr Foundation | | Hamden, CT | Local | 5 | 2024 | $67,023 |
| United Way of Greater New Haven Inc | | New Haven, CT | Local | 6 | 2024 | $66,700 |
| New Alliance Foundation Inc | | New Haven, CT | Local | 6 | 2024 | $60,200 |
| Patagoniaorg | | | National | 6 | 2024 | $58,000 |
| Daniel & Sharon Milikowsky Family Foundation Inc | | Hamden, CT | Local | 3 | 2024 | $45,000 |
| National Recreation Foundation Inc | | Lake Forest, IL | National | 3 | 2024 | $35,000 |
| The Eder Family Foundation Inc | | West Haven, CT | Local | 4 | 2024 | $32,000 |
| The Claire C Ennitt Watershed Fund Inc | | New Haven, CT | Local | 4 | 2024 | $20,000 |
| Scripps Family Fund for Education and the Arts | | Ft Mitchell, KY | Local | 3 | 2024 | $17,000 |
| New Haven Green Fund Inc | | New Haven, CT | Local | 2 | 2024 | $17,000 |
| Clif Bar Family Foundation | | Saint Helena, CA | National | 6 | 2023 | $43,000 |
| Samuel and Helene Soref Foundation | | Studio City, CA | National | 3 | 2023 | $30,000 |
| Echlin Foundation | | Branford, CT | Local | 4 | 2023 | $22,000 |
| Sustainable Ct Inc | | Bozrah, CT | Local | 2 | 2023 | $15,000 |
| Liberty Bank Foundation | | Middletown, CT | Local | 2 | 2023 | $10,000 |
| Avangrid Foundation Inc | | Orange, CT | National | 3 | 2022 | $30,000 |
| Jane and William Curran Foundation Inc | | Palm Coast, FL | Local | 3 | 2022 | $4,000 |
| Joe and Cindy Goldberg Family Foundation Inc | | Guilford, CT | Local | 5 | 2022 | $3,000 |
| Will & Stella Gratz Foundation Inc | | New York, NY | Local | 4 | 2021 | $1,050 |
| In Our Backyards Inc | | Brooklyn, NY | National | 1 | 2020 | $34,489 |
| Irving Foundation Jone D Labombard | | San Diego, CA | National | 2 | 2020 | $15,000 |
| Watering Pond Foundation Inc | | Guilford, CT | National | 1 | 2020 | $105 |
| Yale University | | New Haven, CT | National | 1 | 2019 | $10,000 |
| Netter Foundation Inc | | Boynton Beach, FL | National | 1 | 2019 | $2,000 |
| Town Fair Tire Foundation Inc | | East Haven, CT | — | 1 | 2019 | $500 |
| William Caspar Graustein Memorial Fund | | Hamden, CT | Local | 1 | 2018 | $10,000 |
| Cyrus M Quigley Foundation Incorporated | | Wilton, CT | Local | 1 | 2018 | $2,000 |
| Swantz Family Foundation | | Red Hook, NY | National | 1 | 2018 | $1,000 |
| The Denali Foundation C/O Brierley Cadwell and Possidente | | | — | 1 | 2018 | $1,000 |