| 11th Hour Project / Schmidt Family Foundation | Quimby Family Foundation |
| Adams Legacy Foundation | REI Cooperative Action Fund |
| Alumbra Innovations Foundation | Roundhouse Foundation |
| Arc’teryx | Sahm Family Foundation |
| Elmina B. Sewall Foundation | Sand Hill Foundation |
| George B. Storer Foundation | Swantz Family Foundation |
| Gray Family Foundation | The Curtis & Edith Munson Foundation |
| Harold M. and Adeline S. Morrison Family Foundation | The Keith Campbell Foundation for the Environment |
| Justice Outside | The Lora and Martin Kelley Family Foundation |
| Leonard C. and Mildred F. Ferguson Foundation | The North Face |
| National Environmental Education Foundation | The Russell Family Foundation |
| National Oceanic and Atmospheric Administration | The San Diego Foundation |
| National Park Foundation | Veronique Pittman |
| National Recreation Foundation | William Penn Foundation |
| Onion Foundation | Winnebago Industries Foundation |
| Outdoor Foundation | Winston Family Foundation |
| Parish Family Fund | |
| Pisces Foundation | |
