| The Rhoads Family Environmental Fund | | Pittsburgh, PA | Local | 4 | 2024 | $300,000 |
| Long Cove Foundation Inc | | Pittsford, NY | Local | 6 | 2024 | $270,000 |
| Wescustogo Foundation | | Captiva, FL | Local | 5 | 2024 | $115,000 |
| Island Foundation Inc | | Marion, MA | Local | 5 | 2024 | $100,000 |
| Eaton Foundation | | New York, NY | Local | 2 | 2024 | $70,000 |
| Irving S & Alwyn N Johnson Family Foundation Inc | | Indianapolis, IN | National | 7 | 2024 | $22,000 |
| Elmina B Sewall Foundation | | Freeport, ME | Local | 1 | 2024 | $20,000 |
| Norman Foundation | | New York, NY | National | 3 | 2024 | $10,500 |
| Marr-Anderson Family Foundation | | Falmouth, ME | Local | 1 | 2024 | $10,000 |
| Hickrill Foundation Inc | | New York, NY | Local | 3 | 2024 | $9,500 |
| Raymond F and Judith K Mccaskey 2003 Charitable Tr | | Chicago, IL | Local | 5 | 2024 | $9,000 |
| Hudson Foundation | | Portland, ME | Local | 1 | 2024 | $7,500 |
| Fisher Charitable Foundation | | Portland, ME | Local | 1 | 2024 | $5,000 |
| Simmons Foundation Inc | | Portland, ME | Local | 1 | 2024 | $5,000 |
| Middlecott Foundation | | Boston, MA | National | 3 | 2024 | $2,500 |
| Sarah K Decoizart Perpetual Charitable Tr Art 10 | | Chicago, IL | National | 3 | 2023 | $115,000 |
| Northeastern Regional Association of Coastal Ocean Observation Syste | | Portsmouth, NH | National | 2 | 2023 | $75,759 |
| Davis Conservation Foundation | | Yarmouth, ME | Local | 3 | 2023 | $75,000 |
| Becton Family Foundation Tr | | Homosassa, FL | Local | 6 | 2023 | $32,000 |
| Leonard C & Mildred F Ferguson Foundation | | Canton, OH | National | 3 | 2023 | $15,000 |
| James and Betty Jacobs Fam Charitable Tr | | West Bath, ME | Local | 1 | 2023 | $1,000 |
| Sustainable Ocean Alliance Inc | | San Francisco, CA | National | 1 | 2022 | $8,000 |
| Wing-Benjamin Trust Fund | | Brooklyn, OH | Local | 2 | 2022 | $7,500 |
| Dick and Betsy Devos Family Foundation | | Grand Rapids, MI | Local | 1 | 2022 | $5,000 |
| Stephen and Margaret Gill Family Foundation | | Atherton, CA | Local | 5 | 2022 | $4,500 |
| Daniel P and Nancy C Paduano Foundation | | | Local | 3 | 2022 | $4,000 |
| Crutcher Family Foundation Inc | | | — | 2 | 2021 | $7,500 |
| Elsie & William Viles Foundation | | Augusta, ME | Local | 1 | 2021 | $7,500 |
| Machias Savings Bank Community Development Foundation | | Machias, ME | Local | 2 | 2021 | $7,500 |
| G Peabody & Rose Gardner Charitable Tr | | | — | 2 | 2021 | $3,000 |
| Hal F and Desire G Reynolds Fam Charitable Tr | | Delray Beach, FL | Local | 2 | 2021 | $1,500 |
| An Environmental Trust Inc | | Elkins, NH | Local | 1 | 2020 | $20,000 |
| Prior Family Foundation | | St Thomas, VI | National | 2 | 2020 | $10,000 |
| Western Wind Foundation | | Wilmington, DE | Local | 1 | 2020 | $5,000 |
| Wyeth Foundation | | Chadds Ford, PA | Local | 1 | 2020 | $3,000 |
| Pacifica Foundation | | Warwick, RI | Local | 3 | 2019 | $110,000 |
| Bonnell Cove Foundation | | Groton, CT | National | 1 | 2019 | $3,000 |
| Ganlee Fund C/O Wolf Maryles & Associates LLC | | | — | 2 | 2019 | $2,000 |
| Thomas B Stanley Jr and Ruth B Stanley Family Foundation Inc | | Winter Park, FL | National | 1 | 2018 | $1,000 |