| Fiat Lux Risk and Insurance Company | 501(c)(3) | 2015 | $842.3 million | $2.57 billion | 2025-06 |
| International City Management Association Retirement Corporation | 501(c)(3) | 1973 | $290.1 million | $704.3 million | 2024-12 |
| Americas Health Insurance Plans Inc | 501(c)(6) | 1947 | $78.1 million | $94.8 million | 2024-12 |
| Electronic Payments Coalition Inc | 501(c)(6) | 2016 | $72.8 million | $29 million | 2024-12 |
| Uaw Retirees of Daimler Trucks North America Welfare Benefits Trust | 501(c)(9) | 2016 | $65.6 million | $799.5 million | 2024-12 |
| Afl-Cio Health & Welfare Trust | 501(c)(9) | 2010 | $48.5 million | $29.5 million | 2024-12 |
| Former Player Benefits Trust | 501(c)(9) | 2015 | $34.9 million | $41.1 million | 2025-02 |
| Ufcw Health Insurance Plan for Retirees | 501(c)(9) | 2016 | $24.5 million | $176,866 | 2025-02 |
| Smart VSTD Group Plan | 501(c)(9) | 2011 | $23.9 million | $19.6 million | 2024-12 |
| United Mine Workers of America Prefunded Benefit Plan | 501(c)(9) | 2009 | $22.5 million | $145.4 million | 2024-12 |
| National Education Association and Affiliate Retiree Health Plan | 501(c)(9) | 2000 | $16.3 million | $263.7 million | 2024-12 |
| Ufcw Health Insurance Plan for Active Employees | 501(c)(9) | 2016 | $14.2 million | $278,483 | 2025-02 |
| Institutional LP Association | 501(c)(6) | 2003 | $13.9 million | $20 million | 2024-12 |
| Surety & Fidelity Association of America | 501(c)(6) | 2002 | $6.2 million | $9.8 million | 2025-12 |
| Credit Builders Alliance Inc | 501(c)(3) | 2008 | $4.9 million | $8.6 million | 2024-12 |
| Uaw St Joseph Retirees Health and Welfare Trust | 501(c)(9) | 2011 | $4.4 million | $83.7 million | 2024-12 |
| Sheet Metal Workers International Assoc Staff Health Fund | 501(c)(9) | 1999 | $3.7 million | $54.3 million | 2024-12 |
| Rfe RL Inc Post Retirement Medical Life Veba Trust | 501(c)(9) | 2024 | $3 million | $50 million | 2024-12 |
| Wanada Dental Benefits Trust | 501(c)(9) | 2010 | $2.3 million | $2.4 million | 2024-12 |
| Order of Ahepa | 501(c)(3) | 2024 | $2.1 million | $22 million | 2025-03 |
| Afl-Cio Mutual Benefit Plan | 501(c)(5) | 2010 | $1.8 million | $44.2 million | 2024-12 |
| Womens White Collar Defense Association | 501(c)(6) | 2019 | $1.5 million | $2.1 million | 2024-12 |
| Us Octg Manufacturers Association | 501(c)(6) | 2024 | $1.5 million | $93,350 | 2025-12 |
| Bow Collective | 501(c)(3) | 2022 | $1.2 million | $529,435 | 2023-12 |
| Apga Research Foundation | 501(c)(3) | 2004 | $1.2 million | $1.4 million | 2024-12 |
| Ebri Education and Research Fund | 501(c)(3) | 1996 | $980,512 | $2.9 million | 2025-12 |
| New Life Israel Inc | 501(c)(2) | 2014 | $920,581 | $13.3 million | 2024-12 |
| International Brotherhood of Teamsters Voluntary Benefits Trust | 501(c)(9) | 2005 | $850,268 | $26.7 million | 2025-12 |
| Teamsters Legal Defense Trust | 501(c)(9) | 2009 | $840,450 | $4.3 million | 2025-12 |
| GPS Innovation Alliance | 501(c)(6) | 2014 | $785,090 | $207,368 | 2024-12 |
| Council of State Restaurant Associa Tions Inc | 501(c)(6) | 2026 | $723,495 | $1.1 million | 2022-12 |
| American Gas Association Welfare Benefit Trust | 501(c)(9) | 2003 | $603,867 | $10.3 million | 2024-12 |
| Us Oil & Gas Association | 501(c)(6) | 1999 | $377,185 | $337,855 | 2024-12 |
| American Federation of Teachers Afl Cio Veba Health Savings Trust | 501(c)(9) | 2011 | $340,219 | $3.4 million | 2025-12 |
| State Law Resources Inc | 501(c)(6) | 2000 | $312,896 | $497,657 | 2025-12 |
| Rfa Post Retirement Medical Life Veba F | 501(c)(9) | 2002 | $284,016 | $8.5 million | 2025-09 |
| Transformer Manufacturing Association of America | 501(c)(6) | 2024 | $272,500 | $265,628 | 2024-12 |
| American Council for Election Technology | 501(c)(6) | 2023 | $231,500 | $138,807 | 2025-12 |
| The Washington Alumni Chapter Kappa Alpha Psi Fraternity | 501(c)(7) | 2014 | $206,984 | $245,361 | 2025-09 |
| Deafna Foundation Inc | 501(c)(3) | 2018 | $201,510 | $263,948 | 2025-12 |
| National Petroleum Council Veba | 501(c)(9) | 2017 | $187,480 | $2.5 million | 2025-12 |
| American Federation of Government Employees | 501(c)(5) | 1940 | $170,185 | $116,504 | 2024-12 |
| American Society of Acupuncturists | 501(c)(6) | 2016 | $164,828 | $429,279 | 2025-12 |
| Proposition 65 Sign Management Inc | 501(c)(6) | 2015 | $163,714 | $499,145 | 2025-12 |
| Glenwood Cemetary Irrv Endowment Trust | 501(c)(13) | 2003 | $135,105 | $6.1 million | 2026-04 |
| Independent Order of Odd Fellows Columbia Lodge 10 | 501(c)(8) | 2020 | $122,864 | $1.7 million | 2025-06 |
| Real Estate Cyber Consortium | 501(c)(6) | 2021 | $118,500 | $165,403 | 2025-12 |
| Efik National Association Inc | 501(c)(3) | 2024 | $108,140 | $54,152 | 2024-12 |
| The National Association of Assistant United States Attorneys | 501(c)(6) | 1993 | $105,914 | $5,979 | 2025-12 |
| United Supreme Council Aasrm for the So & West Masonic Jurisdiction | 501(c)(10) | 2025 | $99,642 | $1.3 million | 2026-06 |
| Ufcw Outreach | 501(c)(5) | 2014 | $98,049 | $191,427 | 2024-12 |
| Womens Transportation Seminar | 501(c)(6) | 2017 | $87,769 | $273,973 | 2024-12 |
| The Odd Fellows Home Association of the District of Columbia | 501(c)(8) | 2020 | $84,062 | $808,379 | 2024-12 |
| Friendship Lodge of Washington D C | 501(c)(8) | 2020 | $77,122 | $1.1 million | 2024-12 |
| Indpt Order of Odd Fellows Columbian Encampment 1 | 501(c)(8) | 2020 | $65,066 | $884,891 | 2026-06 |
| Higher Education Consortium for Student Affairs Certification | 501(c)(6) | 2023 | $55,433 | $47,338 | 2025-06 |
| Grand Lodge of Independent Order of Odd Fellows of District Columbia | 501(c)(8) | 2020 | $49,793 | $258,922 | 2026-04 |
| Mt Zion - Female Union Band Historic Memorial Park Inc | 501(c)(3) | 2014 | $45,599 | $60,764 | 2024-12 |
| Washington Teachers Union Option 2 Veba Trust | 501(c)(9) | 2014 | $32,018 | $3.6 million | 2025-06 |
| Afscme Spu Limited Health and Welfare Trust Fund | 501(c)(9) | 2024 | $0 | $655,723 | 2024-12 |
| Ahepa Fort Worth Chapter 19 | 501(c)(10) | 2026 | $0 | $0 | 2025-12 |
| All for America | 501(c)(4) | 2026 | | | |
| American Legal Defense Fund Inc | 501(c)(6) | 2023 | $0 | $0 | 2025-12 |
| American Society for Public Administration | 501(c)(3) | 1981 | $0 | $0 | 2025-12 |
| American Society for Public Administration | 501(c)(3) | 1981 | $0 | $0 | 2025-12 |
| American Society for Public Administration | 501(c)(3) | 1981 | $0 | $0 | 2025-12 |
| Ancient & Accepted Scottish Rite of Free Masonry Southern | 501(c)(10) | 2015 | $0 | $0 | 2025-12 |
| Appalachian Regional Commission Voluntary Employee Beneficiary | 501(c)(9) | 2019 | | | |
| Audrey Robinson Underwood Military Chapter No 15 Oes-Pha | 501(c)(8) | 2014 | $0 | $0 | 2025-10 |
| Bricklayer & Allied Craftworkers Flexible Benefit Plan | 501(c)(9) | 2002 | $0 | $0 | 2025-12 |
| Clinical Scholars Program Alumni Association | 501(c)(3) | 2017 | $0 | $0 | 2025-12 |
| Coalition for Civic Duty | 501(c)(4) | 2025 | | | |
| Coalition for Regulated HFCS Inc | 501(c)(6) | 2024 | $0 | $0 | 2023-12 |
| Council for Tobacco Research Health Ins Trust | 501(c)(9) | 2000 | $0 | $0 | 2025-12 |
| DC Cannabis Business Association | 501(c)(4) | 2026 | $0 | $0 | 2025-12 |
| DC College Sricf | 501(c)(10) | 2017 | $0 | $0 | 2025-12 |
| Debes Eritrean Association | 501(c)(8) | 2023 | $0 | $519,974 | 2025-12 |
| Digital Estate Planning Institute I NC | 501(c)(6) | 2026 | | | |
| District of Columbia Chapter of the Federal Bar Association | 501(c)(6) | 2023 | $0 | $0 | 2025-12 |
| Free and Accepted Masons of the District of Columbia | 501(c)(10) | 2022 | $0 | $0 | 2025-09 |
| Free and Accepted Masons of the District of Columbia Dba Lafayette | 501(c)(10) | 2025 | $0 | $0 | 2024-12 |
| Freemasonry for Women America Lodge Inc | 501(c)(10) | 2020 | $0 | $0 | 2025-12 |
| Friends of Old Westview Cemetery Inc | 501(c)(13) | 2003 | $0 | $0 | 2023-12 |
| Gethsemane Chapter No 3 Oes Pha | 501(c)(8) | 2014 | $0 | $0 | 2025-10 |
| Gulf South Business Roundtable Inc | 501(c)(6) | 2025 | $0 | $0 | 2024-12 |
| Harry V Lohman Covenant Lodge No 13 Independent Order of Odd Fellows | 501(c)(8) | 2024 | $0 | $0 | 2025-12 |
| Hill-Snowdon Foundation Veba Trust | 501(c)(9) | 2026 | | | |
| Institute for Pension Fund Integrity | 501(c)(3) | 2021 | $0 | $0 | 2025-12 |
| International Society of Hymenopterists | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| La France Lodge No 93 | 501(c)(10) | 2024 | $0 | $0 | 2024-12 |
| Lafayette 89 | 501(c)(10) | 2010 | $0 | $0 | 2024-12 |
| Lodge Adhuc Stat No 1782 | 501(c)(10) | 2025 | $0 | $0 | 2025-12 |
| Masonic Foundation of the District of Columbia | 501(c)(3) | 1964 | | $6.7 million | 2026-03 |
| Mattie R Griffin Chapter No 16 | 501(c)(8) | 2014 | $0 | $0 | 2025-10 |
| Metropolitan Washington Airports Authority Employee Welfare Ben Trust | 501(c)(9) | 2005 | | | |
| Most Worshipful Prince Hall Grand Lodge F&AM DC and Subordinates | 501(c)(8) | 1990 | $0 | $0 | 2025-10 |
| Most Worshipful Prince Hall Grand Lodge F&AM DC and Subordinates | 501(c)(8) | 1990 | $0 | $0 | 2025-10 |
| Most Worshipful Prince Hall Grnad Lodge F&AM DC and Subordinates | 501(c)(8) | 1990 | $0 | $0 | 2025-10 |
| National Association of Professional Staff in Public Safet | 501(c)(6) | 2026 | | | |
| National Institute On Retirement Security | 501(c)(4) | 2007 | $0 | $0 | 2025-12 |
| Nbcfae Foundation | 501(c)(3) | 2023 | $0 | $1 | 2024-12 |
| Nda Charitable Foundation | 501(c)(3) | 2026 | | $267,107 | 2025-06 |
| Omicron Lambda Alpha Charitable Fou Ndation | 501(c)(3) | 2026 | | | |
| Operational Control Alliance | 501(c)(6) | 2026 | | | |
| Order of Ahepa | 501(c)(8) | 2025 | $0 | $0 | 2026-06 |
| Police Emerald Society of the Washington DC Area Inc | 501(c)(8) | 2019 | $0 | $0 | 2025-12 |
| Prince Hall Chapter No 5 Oes Pha | 501(c)(8) | 2014 | $0 | $0 | 2025-10 |
| Queen Esther Chapter No 1 Oes Pha | 501(c)(8) | 2014 | $0 | $0 | 2025-10 |
| Queen of Sheba Chapter No 2 Oes Pha | 501(c)(8) | 2014 | $0 | $0 | 2023-10 |
| Ramw Action Fund Inc | 501(c)(4) | 2026 | | | |
| Real Tax Policy Inc | 501(c)(6) | 2010 | $0 | $0 | 2025-12 |
| Ruth Chapter No 8 Oes Pha | 501(c)(8) | 2014 | $0 | $0 | 2025-10 |
| Sigma Chi Epsilon Military Sorority Inc | 501(c)(3) | 2018 | $0 | $0 | 2023-10 |
| The Kenya World Bank-Imf Staff Association | 501(c)(4) | 2012 | $0 | $0 | 2024-12 |
| Ufcw Member Voluntary Benefit Fund | 501(c)(9) | 2013 | $0 | $0 | 2025-12 |
| Washington DC Pharmacy Association | 501(c)(6) | 2020 | $0 | $0 | 2025-12 |
| Woodlawn Cemetery Perpetual Care Association Inc | 501(c)(13) | 2014 | $0 | $0 | 2025-12 |
| World Kachin Congress Incorporated | 501(c)(3) | 2021 | $0 | $0 | 2025-12 |