| 100 Reporters | Washington | C | $291K |
| Advanced Leadership Foundation Inc | Washington | D | $2.69M |
| Advancing American Freedom Foundation | Washington | C | $6.33M |
| Advocate | Washington | C | $378K |
| Aff Patriots Foundation | Washington | C | $30K |
| America250Org Inc | Washington | B | $46.39M |
| American Accountability Foundation | Washington | B | $1.18M |
| American Council for Capital Formation | Washington | B | $409K |
| American Forum | Washington | F | $159K |
| American Gas Foundation | Washington | C | $561K |
| American Gold Star Mothers Inc | Washington | C | $309K |
| American Moment Inc | Washington | D | $2.03M |
| American Movement Foundation | Washington | D | $892K |
| American Policy Ventures Foundation | Washington | D | $8.41M |
| American Research and Policy Institute | Washington | D | $131K |
| American Security Project | Washington | B | $438K |
| American Society for Public | Washington | B | $1.62M |
| Americans for Financial Reform Education Fund | Washington | B | $4.22M |
| Americans for Informed Democracy | Washington | D | $78K |
| Association for Public Policy Analysis & | Washington | A | $2.45M |
| Association of Maternal and Child Health | Washington | C | $7.97M |
| Ballot Initiative Strategy Center | Washington | C | $2.42M |
| Beneath the Service | Washington | C | $574K |
| Billy Fiske Foundation | Washington | F | $9,829 |
| Bipartisan Policy Center Inc | Washington | B | $37.84M |
| Blacks in Government | Washington | C | $440K |
| Blinded American Veterans Foundation | Washington | D | $4,182 |
| Bridge the Gap-Syngap Education & Research Foundation | Washington | D | $70K |
| Broadfutures Inc | Washington | B | $1.09M |
| Business & Professional Women's | Washington | C | $36K |
| Business for America Education Fund | Washington | F | $235K |
| Campaign for Accountability Inc | Washington | A | $2.82M |
| Campaign Verify Inc | Washington | A | $774K |
| Care Lab | Washington | C | $750K |
| Caring for Military Families the Elizabeth Dole Foundation | Washington | C | $8.22M |
| Cato Institute | Washington | C | $69.20M |
| Center for Democracy and Development in the Americas Inc | Washington | C | $181K |
| Center for Political Accountability | Washington | D | $1.08M |
| Center for Popular Democracy Inc | Washington | C | $40.88M |
| Center for Renewing America Inc | Washington | B | $6.81M |
| Center for Strategic and Budgetary | Washington | B | $6.11M |
| Center for Study of Responsive Law | Washington | D | $2.57M |
| Center for the National Interest | Washington | B | $2.73M |
| Center for the Study of Services | Washington | A | $28.32M |
| Center for the Study of Social Policy | Washington | B | $8.38M |
| Center for US Global Leadership | Washington | B | $13.23M |
| Center on Budget and Policy Priorities | Washington | C | $52.52M |
| Centre for Public Impact North | Washington | B | $7.93M |
| Chefs Stopping Aapi Hate | Washington | C | $129K |
| Cii Research and Education Fund | Washington | D | $3,476 |
| Cities Forward Inc | Washington | F | $6.20M |
| Citizen Opinion Inc | Washington | D | $267K |
| Citizens for Responsibility and Ethics | Washington | C | $11.15M |
| Coalition to Protect Americas National | Washington | C | $477K |
| Commercial Vehicle Safety Alliance | Washington | A | $16.17M |
| Committee for a Responsible | Washington | C | $10.37M |
| Common Cause Education Fund | Washington | C | $26.76M |
| Community Action Financial Institute | Washington | F | $2,792 |
| Community Transportation Association of | Washington | C | $9.15M |
| Competition & Innovation Institute | Washington | D | $22 |
| Conectate | Washington | D | $52K |
| Conference of State Bank Supervisors | Washington | A | $97.59M |
| Congressional Management Foundation Inc | Washington | B | $1.51M |
| Congressional Progressive Caucus Center | Washington | C | $2.98M |
| Consortium for Elections & | Washington | D | $93.11M |
| Consumer Federation of America | Washington | C | $11.47M |
| Consumer Products Association | Washington | A | $118K |
| Council for National Policy | Washington | A | $4.09M |
| Council on Competitiveness | Washington | B | $3.28M |
| CSBS Education Foundation | Washington | A | $4.70M |
| Data for Social Good Education Fund | Washington | C | $2.87M |
| DC Policy Center | Washington | B | $1.88M |
| Delta Research & Educational Foundation | Washington | B | $5.03M |
| Democracy 21 Education Fund | Washington | C | $301K |
| Democratization Policy Council Inc | Washington | D | $0 |
| Digital Asset Institute | Washington | C | $45K |
| Doctors for Cannabis Regulation | Washington | C | $78K |
| Drug Strategies | Washington | D | $3,639 |
| Durable Capital for Sustainable Outcomes | Washington | D | $27.46M |
| Earthworks | Washington | C | $12.16M |
| Economic Architecture | Washington | C | $1.04M |
| Emerald Cities Collaborative Inc | Washington | B | $7.06M |
| Epoch Times Capital Region | Washington | D | $53K |
| Ethics and Public Policy Center Inc | Washington | A | $8.99M |
| Fabric of America Foundation | Washington | F | $192K |
| Fair Democracy Engagement Fund | Washington | D | $52K |
| FCNL Education Fund | Washington | C | $5.55M |
| Fdrlst Media Foundation | Washington | C | $3.03M |
| Federal Funds Information for States | Washington | A | $1.03M |
| Federation for Innovation in Democracy | Washington | B | $385K |
| Fields 4 Valor Farms Inc | Washington | D | $204K |
| Fierce Civility Project Inc | Washington | C | $10K |
| For the Long Term | Washington | B | $1.40M |
| Foreign Policy for America Foundation | Washington | D | $557K |
| Former Members of Congress | Washington | B | $3.96M |
| Foundation for Accountability Integrity & Research in Elections Fund | Washington | F | $3.84M |
| Foundation for Public Affairs | Washington | B | $228K |
| Fsic American Innovation and Opportunity Fund | Washington | C | $75K |
| Fund for Constitutional Government | Washington | C | $6.54M |
| Future Tech Insights Inc | Washington | B | $5.15M |
| Global War on Terrorism Memorial Foundation | Washington | B | $2.47M |
| Govern for America Inc | Washington | B | $1.65M |
| Government Accountability Project | Washington | B | $4.43M |
| Impact4Women | Washington | A | $0 |
| Informing America Foundation | Washington | D | $7.91M |
| Institute for a Secure America Inc | Washington | D | $1.34M |
| Institute for Free Speech | Washington | B | $4.69M |
| Institute for War & Peace Reporting-Us | Washington | C | $10.78M |
| Institute on Taxation and Economic | Washington | C | $8.49M |
| International Leadership Foundation | Washington | B | $915K |
| International Tax and Investment Center | Washington | A | $3.75M |
| Internet Education Foundation | Washington | C | $1.17M |
| Issue One | Washington | C | $6.85M |
| Japan Institute for Social Innovation and Entrepreneurship | Washington | C | $26K |
| Judicial Watch Inc | Washington | D | $102.27M |
| Labor Mobility Partnerships Inc | Washington | B | $1.48M |
| Land Use Atlas Inc | Washington | D | $1.93M |
| Lawfare Institute | Washington | B | $1.85M |
| Leadership Greater Washington | Washington | A | $1.59M |
| Leadership Initiatives | Washington | C | $4.92M |
| Macdonald-Laurier Institute | Washington | D | $2.92M |
| Match Dot Dollars Inc | Washington | D | $230 |
| Metropolitan Washington Council | Washington DC | A | $54.38M |
| Midwestern Governors Association | Washington | C | $725K |
| Military Wellness Initiative | Washington | D | $883K |
| Millennial Action Project Dba Future Caucus | Washington | B | $3.81M |
| More | Washington | D | $635K |
| National Academy of Public | Washington | B | $5.79M |
| National Association of Attorneys | Washington | C | $4.64M |
| National Association of Consumer | Washington | D | $127K |
| National Association of Nonprofit | Washington | D | $126K |
| National Association of Regional | Washington | A | $1.22M |
| National Association of State Election Directors | Washington | A | $599K |
| National Christopher Columbus Association Inc | Washington | C | $4,803 |
| National Coalition on Black Civic Partic | Washington | C | $3.41M |
| National Congress of Black Women Inc | Washington | B | $161K |
| National Consumers League Inc | Washington | B | $5.05M |
| National Cyber Security Alliance | Washington | A | $3.12M |
| National Endowment for Democracy | Washington | C | $298.05M |
| National Forum for Black Public | Washington | A | $3.45M |
| National Japanese American Memorial | Washington | D | $198K |
| National Political Caucus Lead | Washington | F | $25K |
| National Public Education Support Fund | Washington | B | $3.27M |
| National Wic Association | Washington | A | $7.41M |
| Natura International Inc | Washington | B | $897K |
| Naval Services Familyline | Washington Na | D | $73K |
| Ncta Education Foundation Inc | Washington | D | $3.86M |
| Network Education Program Network | Washington | B | $1.98M |
| New Leaders Council | Washington | D | $1.03M |
| No Greater Sacrifice Foundation | Washington | A | $3.04M |
| Oil Change International Inc | Washington | C | $9.96M |
| Open Contracting Partnership | Washington | B | $9.25M |
| Opensecrets | Washington | B | $4.28M |
| Partnership for Large Election Juri | Washington | B | $2.99M |
| Pirth Institute | Washington | C | $261K |
| Police & Sheriffs Patrol Foundation Inc | Washington | C | $117K |
| Postsecondary National Policy Institute | Washington | C | $1.73M |
| Progressive Change Institute | Washington | C | $407K |
| Project on Government Oversight Inc | Washington | B | $8.14M |
| Public Citizen Foundation Inc | Washington | C | $26.77M |
| Public Knowledge | Washington | C | $2.88M |
| Public Leadership Education Network | Washington | B | $246K |
| Public Private Strategies Institute | Washington | F | $7.59M |
| Pulitzer Center on Crisis Reporting | Washington | C | $17.55M |
| Recoding America Fund Inc | Washington | F | $17.83M |
| Reserve Officers Association Memorial | Washington | D | $102K |
| Reset Tech | Washington | C | $11.02M |
| Roa Standing Together for America's | Washington | F | $198K |
| Seba Segel | Washington | C | $3,241 |
| Shared America Inc | Washington | D | $1.44M |
| Silverado Policy Accelerator Inc | Washington | C | $3.12M |
| Sister Cities International Inc | Washington | A | $1.86M |
| Social Security Works Education Fund | Washington | C | $4.02M |
| South Asian Impact Foundation | Washington | C | $524K |
| Southern Christian Leadership Global Policy Initit | Washington | C | $321K |
| State Democracy Defenders Fund | Washington | C | $14.49M |
| State Freedom Caucus Foundation | Washington | D | $1.86M |
| State Leadership Foundation | Washington | F | $250K |
| Stop Child Abuse | Washington | D | $74K |
| Tax Foundation | Washington | B | $7.75M |
| Taxpayers for Common Sense | Washington | B | $1.81M |
| Taxpayers Protection Alliance Foundation | Washington | C | $280K |
| The Center for Evaluation | Washington | B | $3.13M |
| The Center for Public Integrity | Washington | B | $892K |
| The Council on Strategic Risks | Washington | B | $6.45M |
| The Data Foundation Inc | Washington | C | $3.04M |
| The Government Affairs Institute Inc | Washington | B | $2.79M |
| The Heritage Foundation | Washington | B | $133.87M |
| The Jewish War Veterans of the United | Washington | D | $185K |
| The Leadership Conference | Washington | C | $13.31M |
| The National Center on Education and | Washington | C | $19.36M |
| The Niskanen Center Inc | Washington | C | $9.96M |
| The Policy Academies Inc | Washington | B | $374K |
| The Registration Project Inc | Washington | C | $7,006 |
| Transcending Incrementalism | Washington | D | $15K |
| Trucking Cares Foundation | Washington | D | $798K |
| Truman Center for National Policy | Washington | C | $581K |
| Union Station Redevelopment Corporation | Washington | C | $15.74M |
| Upo Inspire | Washington | C | $45K |
| US Pugwash | Washington | C | $40K |
| US Telecommunications Training Institute Inc | Washington | B | $2.22M |
| Veterans Assistance Charity Inc | Washington | C | $115K |
| Veterans Consortium Pro Bono Program | Washington | C | $4.98M |
| Welcome Democracy Institute | Washington | C | $861K |
| Western Caucus Foundation | Washington | C | $1.05M |
| White House Fellows Foundation | Washington | C | $843K |
| With Honor Institute | Washington | C | $537K |
| WND News Center | Washington | D | $941K |
| Women of Color Advancing Peace and Security Wcaps | Washington | B | $396K |
| World Veterans | Washington | B | $0 |
| Your Ethiopian Professional Network | Washington | B | $41K |
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