| Graham Stretch Family Foundation | | Wilmington, DE | Local | 5 | 2024 | $131,000 |
| Alice Rowan Swanson Foundation | | Wilmington, DE | National | 7 | 2024 | $14,000 |
| Double Eagle Foundation | | Philadelphia, PA | National | 4 | 2024 | $800 |
| Jelks Family Foundation Inc | | Washington, DC | National | 1 | 2024 | $500 |
| The Keith Campbell Foundation for the Environment Inc | | Bethesda, MD | National | 1 | 2024 | $100 |
| Friedman - French Foundation Inc | | Washington, DC | National | 1 | 2023 | $100,000 |
| Bauman Family Foundation | | Little Falls, NJ | Local | 1 | 2023 | $10,000 |
| John a and Elizabeth F Taylor Charitable Foundation Inc | | Jupiter, FL | Local | 2 | 2023 | $5,000 |
| Robert and Susan Rosenbaum Foundation Inc | | Bethesda, MD | Local | 1 | 2023 | $258 |
| Rei Cooperative Action Fund | | Sumner, WA | National | 2 | 2022 | $160,000 |
| United States Energy Foundation | | San Francisco, CA | National | 2 | 2021 | $60,000 |
| The Rudolph J & Daphne a Munzer Foundation | | Long Beach, CA | Local | 1 | 2021 | $2,000 |
| The Diggs Family Foundation | | | — | 1 | 2021 | $1,000 |
| The Rei Foundation | | | — | 1 | 2020 | $40,000 |
| Rails to Trails Conservancy | | Washington, DC | National | 1 | 2019 | $10,000 |
| Helen & William Mazer Foundation | | Berkeley Hts, NJ | National | 1 | 2019 | $1,000 |
| Arenstein Foundation | | | — | 1 | 2019 | $250 |
| United Way of the National Capital Area | | Vienna, VA | Local | 2 | 2018 | $32,280 |
| World Bank Community Connections Fund | | Washington, DC | Local | 1 | 2018 | $25,975 |