| Society for the Protection of New Hampshire ForestsConcord | Form 990 | $13,274,033FY2025 |
| New Hampshire RecyclesEpsom | Form 990 | $7,843,586FY2025 |
| The Monadnock ConservancyKeene | Form 990 | $6,871,141FY2025 |
| Squam Lakes Natural Science CenterHolderness | Form 990 | $6,166,667FY2025 |
| Upper Valley Land Trust IncHanover | Form 990 | $4,390,154FY2025 |
| Audubon Society of New HampshireConcord | Form 990 | $3,784,209FY2025 |
| New England Grassroots Environment Fund IncNewmarket | Form 990 | $3,382,348FY2024 |
| Kroka ExpeditionsMarlow | Form 990 | $3,148,379FY2024 |
| Squam Lakes AssociationHolderness | Form 990 | $2,911,105FY2024 |
| Lakes Region Conservation TrustCenter Harbor | Form 990 | $2,853,100FY2025 |
| Harris Center for Conservation Education IncHancock | Form 990 | $2,850,196FY2025 |
| Legado IncJackson | Form 990 | $2,663,742FY2025 |
| Ammonoosuc Conservation TRFranconia | Form 990 | $2,363,150FY2025 |
| Lake Sunapee Protective AssociationSunapee | Form 990 | $2,136,314FY2025 |
| Clean Energy NHConcord | Form 990 | $1,978,641FY2024 |
| Ausbon Sargent Land Preservation TrustNew London | Form 990 | $1,785,726FY2025 |
| New Hampshire Lakes Association IncConcord | Form 990 | $1,751,882FY2025 |
| US Plastics Pact LLCWalpole | Form 990 | $1,580,477FY2024 |
| Tin Mountain Conservation Center IncorporatedAlbany | Form 990 | $1,390,938FY2025 |
| Newfound Lake Region AssociationHebron | Form 990 | $1,362,888FY2025 |
| Loon Preservation CommitteeMoultonborough | Form 990 | $1,311,108FY2026 |
| Hubbard Brook Research Foundation IncThornton | Form 990 | $1,189,813FY2025 |
| Squam Lakes Conservation SocietyHolderness | Form 990 | $1,149,583FY2025 |
| Plymouth Area Renewable Energy InitiativePlymouth | Form 990 | $791,033FY2025 |
| Chocorua Lake ConservancyTamworth | Form 990 | $728,027FY2024 |
| Student-Led Sustainable Initiatives IncDover | Form 990 | $714,073FY2025 |
| Land for Good IncKeene | Form 990 | $657,923FY2024 |
| Great Bay Stewards IncGreenland | Form 990 | $647,150FY2025 |
| Moose Mountains Regional GreenwaysUnion | Form 990 | $641,556FY2024 |
| Hanover ConservancyHanover | Form 990 | $572,999FY2025 |
| 350 New HampshireDover | Form 990 | $513,172FY2024 |
| Bedrock GardensLee | Form 990 | $484,583FY2024 |
| Francestown Land Trust IncFrancestown | Form 990 | $466,822FY2025 |
| Graylag Nature Preserve IncPittsfield | Form 990 | $456,956FY2024 |
| New Hampshire Businesses for Social ResponsibilityConcord | Form 990 | $376,890FY2025 |
| Bearpaw Regional GreenwaysNorthwood | Form 990 | $350,074FY2024 |
| Green Mountain Conservation GroupEffingham | Form 990 | $347,839FY2025 |
| Forest Lake Improvement Association of Winchester NHWinchester | Form 990 | $332,230FY2024 |
| Seabrook-Hamptons Estuary AllianceHampton | Form 990 | $298,772FY2025 |
| Partridge Lake Property Owners AssociationLittleton | Form 990 | $289,524FY2025 |
| La Cruz Habitat Protection ProjectKeene | Form 990 | $278,899FY2024 |
| Lamprey River Wateshed AssociationLee | Form 990 | $259,711FY2025 |
| Acton-Wakefield Watersheds Alliance IncUnion | Form 990 | $248,360FY2024 |
| New Hampshire the Beautiful IncManchester | Form 990 | $244,250FY2025 |
| Bow Open Spaces IncBow | Form 990 | $236,845FY2025 |
| New Hampshire Association of Conservation DistrictsConcord | Form 990 | $223,583FY2024 |
| Winnisquam Watershed NetworkWinnisquam | Form 990 | $214,664FY2025 |
| Nansen Ski Club IncBerlin | Form 990 | $205,667FY2025 |
| New Hampshire Rivers CouncilConcord | Form 990 | $197,499FY2025 |
| Friends of The@concord - Lake Sunapee Rail TrailWarner | Form 990 | $159,277FY2025 |