Organizations
Largest first
By revenue on the last return. Organizations that file Form 990-N report no figures and come last.
| Organization | Return | Revenue |
|---|---|---|
| New Venture FundWashington | Form 990 | $662,364,100FY2024 |
| World Wildlife Fund IncWashington | Form 990 | $366,655,209FY2025 |
| Windward FundWashington | Form 990 | $308,245,754FY2024 |
| Urban Land InstituteWashington | Form 990 | $92,328,399FY2025 |
| Paintcare IncWashington | Form 990 | $77,136,896FY2025 |
| League of Conservation Voters Education FundWashington | Form 990 | $75,210,318FY2024 |
| American Rivers IncWashington | Form 990 | $53,419,167FY2025 |
| National Parks Conservation AssociationWashington | Form 990 | $51,618,326FY2025 |
| U S Green Building Council IncWashington | Form 990 | $50,309,478FY2024 |
| Ocean Conservancy IncWashington | Form 990 | $48,811,949FY2025 |
| Great Barrier Reef Foundation USA IncWashington | Form 990 | $47,806,244FY2025 |
| The Recycling Partnership IncWashington | Form 990 | $41,184,643FY2024 |
| Wilderness SocietyWashington | Form 990 | $38,258,071FY2025 |
| Rewiring America IncWashington | Form 990 | $37,624,309FY2024 |
| EarthshareWashington | Form 990 | $37,266,646FY2025 |
| American ForestsWashington | Form 990 | $35,611,433FY2025 |
| Clean Future Forum IncWashington | Form 990 | $35,405,711FY2025 |
| Oceana IncWashington | Form 990 | $34,668,686FY2024 |
| VERRAWashington | Form 990 | $30,616,660FY2025 |
| Climate and Clean Energy Equity FundWashington | Form 990 | $29,514,763FY2024 |
| Partnership Project IncWashington | Form 990 | $29,155,875FY2024 |
| CLASPWashington | Form 990 | $28,948,146FY2024 |
| Clearpath IncWashington | Form 990 | $26,628,921FY2025 |
| Greenpeace Fund IncWashington | Form 990 | $26,331,360FY2024 |
| Coalition for Green CapitalWashington | Form 990 | $24,315,819FY2024 |
| Land Trust Alliance IncorporatedWashington | Form 990 | $22,350,355FY2024 |
| International Council on Clean TransportationWashington | Form 990 | $22,292,485FY2024 |
| The Alliance for Climate ProtectionWashington | Form 990 | $21,072,350FY2025 |
| Friends of the EarthWashington | Form 990 | $20,396,676FY2025 |
| American Forest FoundationWashington | Form 990 | $20,267,955FY2024 |
| Smart Electric Power AllianceWashington | Form 990 | $19,875,569FY2024 |
| National Association of Conservation Districts IncWashington | Form 990 | $19,293,176FY2025 |
| Global Fishing Watch IncWashington | Form 990 | $19,122,848FY2025 |
| Center for Climate and Energy Solutions IncWashington | Form 990 | $18,710,584FY2025 |
| American Council for an Energy Efficient EconomyWashington | Form 990 | $17,327,397FY2025 |
| Environmental Working GroupWashington | Form 990 | $16,366,034FY2025 |
| Resources for the Future IncWashington | Form 990 | $15,548,968FY2025 |
| Alliance for Tribal Clean Energy IncWashington | Form 990 | $15,207,137FY2025 |
| Efi FoundationWashington | Form 990 | $14,011,996FY2024 |
| Solar United NeighborsWashington | Form 990 | $13,724,497FY2024 |
| Ocean Risk and Resilience Action Alliance IncWashington | Form 990 | $13,552,554FY2025 |
| Sustainable Forestry Initiative IncWashington | Form 990 | $13,540,166FY2024 |
| Friends of the OsaWashington | Form 990 | $13,421,883FY2024 |
| Rails to Trails ConservancyWashington | Form 990 | $13,289,625FY2025 |
| Ocean FoundationWashington | Form 990 | $13,196,134FY2025 |
| Climate Power Education FundWashington | Form 990 | $11,510,629FY2024 |
| Regulatory Assistance ProjectWashington | Form 990 | $10,015,374FY2024 |
| Center for Climate IntegrityWashington | Form 990 | $9,922,490FY2025 |
| Mobilizegreen IncWashington | Form 990 | $9,905,136FY2024 |
| Mission Possible Partnership USA IncWashington | Form 990 | $9,702,435FY2025 |
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