| Clark Charitable Foundation Inc | | Bethesda, MD | National | 5 | 2024 | $165,701,440 |
| Sergey Brin Family Foundation | | San Francisco, CA | National | 5 | 2024 | $6,750,000 |
| David H and Suzanne D Hillman Family Foundation | | Mclean, VA | Local | 5 | 2024 | $5,438,462 |
| Snider Foundation | | Collegeville, PA | Local | 7 | 2024 | $3,177,748 |
| Scripps-Howard Foundation | | Cincinnati, OH | National | 3 | 2024 | $2,667,858 |
| Randy Ortanez Foundation Inc | | Columbia, MD | Local | 7 | 2024 | $1,730,000 |
| Greenblatt Family Charitable Tr | | New York, NY | Local | 5 | 2024 | $1,653,400 |
| Deloitte Foundation | | Stamford, CT | National | 8 | 2024 | $1,590,351 |
| Mickey Dale Family Foundation Inc | | Raleigh, NC | Local | 6 | 2024 | $1,530,964 |
| Robert H Smith School of Business Foundation Inc | | Potomac, MD | Local | 3 | 2024 | $957,046 |
| Moskowitz Family Foundation Inc | | Westfield, NJ | Local | 7 | 2024 | $785,313 |
| Park Foundation Inc | | Ithaca, NY | National | 5 | 2024 | $500,000 |
| The Jewish Federation of Greater Washington Inc | | North Bethesda, MD | National | 4 | 2024 | $456,678 |
| Skyline Foundation | | Palo Alto, CA | National | 3 | 2024 | $450,000 |
| Gordon E and Betty I Moore Foundation | | Palo Alto, CA | National | 7 | 2024 | $430,000 |
| Ernst & Young Foundation | | New York, NY | National | 8 | 2024 | $429,080 |
| Green Fund | | Westminster, CO | National | 6 | 2024 | $390,000 |
| Community Foundation of Anne Arundel County Inc | | Annapolis, MD | Local | 6 | 2024 | $378,415 |
| Bainum Family Foundation | | Washington, DC | National | 6 | 2024 | $320,000 |
| Ryan-Richtsmeier Charitable Foundation Inc | | Philadelphia, PA | Local | 3 | 2024 | $270,000 |
| Morris and Gwendolyn Cafritz Foundation | | Washington, DC | Local | 5 | 2024 | $230,000 |
| Community Foundation of Frederick County Maryland Incorporated | | Frederick, MD | Local | 8 | 2024 | $218,501 |
| Schwab-Silfen Foundation | | Harrisburg, PA | National | 3 | 2024 | $216,000 |
| Joan and Chester Luby Charitable Trust | | Jupiter, FL | Local | 2 | 2024 | $200,000 |
| National Wildlife Federation | | Reston, VA | National | 1 | 2024 | $191,826 |
| Charlotte W Newcombe Foundation | | Princeton, NJ | Local | 6 | 2024 | $190,000 |
| Kahlert Foundation Inc | | Sykesville, MD | Local | 3 | 2024 | $175,000 |
| Underwriters Laboratories Inc | | Evanston, IL | National | 1 | 2024 | $170,000 |
| Isadore and Bertha Gudelsky Family Foundation Inc | | Washington, DC | Local | 8 | 2024 | $162,500 |
| Franey Family Foundation Inc | | Annapolis, MD | Local | 6 | 2024 | $150,650 |
| Edward B Byrd Charitable Foundation Inc | | Boyds, MD | Local | 5 | 2024 | $150,000 |
| Bruce and Avis Richards Familyfoundation | | New York, NY | Local | 1 | 2024 | $150,000 |
| Tina Snider Foundation | | Gloucester, MA | National | 3 | 2024 | $150,000 |
| Wisnosky Family Foundation Inc | | Edgewater, MD | National | 4 | 2024 | $142,500 |
| Neilom Foundation Inc | | Bethesda, MD | Local | 3 | 2024 | $138,000 |
| Kpmg U S Foundation Inc | | Montvale, NJ | National | 7 | 2024 | $131,902 |
| The Morris and Alma Schapiro Fund | | New York, NY | Local | 2 | 2024 | $125,000 |
| Smart Family Fund | | Lisle, IL | National | 5 | 2024 | $120,000 |
| Hinman Charitable Foundation | | Monte Sereno, CA | National | 5 | 2024 | $120,000 |
| Arnhold Foundation Inc | | New York, NY | Local | 5 | 2024 | $114,725 |
| Sentinel Bio Inc | | Washington, DC | National | 1 | 2024 | $113,300 |
| Sullivan Family Charitable Foundation | | Woodbridge, NJ | National | 2 | 2024 | $102,892 |
| Levitetz Family Foundation Inc | | Boca Raton, FL | Local | 3 | 2024 | $93,750 |
| American Chemical Society | | Washington, DC | National | 3 | 2024 | $80,000 |
| Sheldon Shapiro Charitable Foundation Inc | | Rockville, MD | Local | 4 | 2024 | $75,000 |
| Marinus and Minna B Koster Foundation Inc | | Potomac Falls, VA | Local | 8 | 2024 | $75,000 |
| N S Goldstein Foundation Inc | | Wesley Chapel, FL | Local | 7 | 2024 | $65,000 |
| Jane Henson Foundation Inc | | New York, NY | National | 6 | 2024 | $60,000 |
| Harry and Zoe Poole Foundation | | Fairfax, VA | National | 6 | 2024 | $60,000 |
| Baker Tilly Foundation | | Chicago, IL | National | 2 | 2024 | $60,000 |
| The Winkler Family Foundation | | Los Angeles, CA | Local | 7 | 2024 | $57,500 |
| Jahanvi Desai Educational Foundation Inc | | Bethesda, MD | Local | 1 | 2024 | $56,000 |
| Miller Family Endowment Inc | | Delray Beach, FL | Local | 5 | 2024 | $52,000 |
| Richard E and Nancy P Marriott Foundation Inc | | Bethesda, MD | Local | 1 | 2024 | $50,000 |
| American Medical Association | | Chicago, IL | National | 1 | 2024 | $49,958 |
| Edward a St John Foundation Inc | | Baltimore, MD | Local | 6 | 2024 | $47,450 |
| Nora Roberts Foundation Inc | | Glenn Dale, MD | National | 4 | 2024 | $41,000 |
| The Community Foundation for Northern Virginia Inc | | Fairfax, VA | Local | 4 | 2024 | $36,500 |
| S Irwin Kamin Foundation Inc | | Mount Airy, MD | Local | 6 | 2024 | $33,800 |
| The United Way of Central Maryland Inc | | Baltimore, MD | Local | 4 | 2024 | $29,963 |
| Weintraub Family Foundation Inc | | Florham Park, NJ | National | 2 | 2024 | $26,500 |
| Joel L Altman Charitable Foundation Inc | | Boca Raton, FL | National | 1 | 2024 | $25,000 |
| Ben and Esther Rosenbloom Foundation Inc | | Pikesville, MD | National | 1 | 2024 | $25,000 |
| Contino Family Foundation | | Columbia, MD | Local | 2 | 2024 | $20,000 |
| Frederick H Bedford Jr and Margaret S Bedford Charitable Foundation | | Easton, PA | National | 2 | 2024 | $20,000 |
| Naomi and Nehemiah Cohen Foundation Virginia Corporation | | Bethesda, MD | National | 4 | 2024 | $15,000 |
| Marc Lipella Foundation | | Hagerstown, MD | Local | 7 | 2024 | $15,000 |
| Morrissette Family Foundation Inc | | Springfield, VA | National | 4 | 2024 | $14,000 |
| Francis E and Mildred W Gardiner Jr Family Foundation | | Annapolis, MD | Local | 5 | 2024 | $13,000 |
| Cremona Foundation Inc | | Mechanicsvlle, MD | Local | 1 | 2024 | $11,117 |
| Nisource Charitable Foundation | | Columbus, OH | National | 1 | 2024 | $10,000 |
| Canopy Neurodiversity Foundation | | Kirkland, WA | Local | 1 | 2024 | $10,000 |
| American Psychological Association Inc | | Washington, DC | National | 1 | 2024 | $9,500 |
| Association for Asian Studies Inc | | Ann Arbor, MI | National | 1 | 2024 | $9,336 |
| Pinellas Community Foundation | | Clearwater, FL | Local | 1 | 2024 | $7,900 |
| Solutions Journalism Network Inc | | New York, NY | National | 1 | 2024 | $7,500 |
| Anita and Julian Saul Foundation Inc | | Brentwood, TN | Local | 6 | 2024 | $6,000 |
| Fidelity Foundation | | Boston, MA | National | 6 | 2024 | $5,300 |
| Hecht Levi Foundation Inc | | Baltimore, MD | Local | 1 | 2024 | $5,000 |
| Craig E Kaforey Family Foundation | | Allison Park, PA | Local | 1 | 2024 | $5,000 |
| Jalil Family Foundation | | Portola Vally, CA | Local | 1 | 2024 | $5,000 |
| Einstein Astrof Foundation Inc | | Hunt Valley, MD | Local | 1 | 2024 | $5,000 |
| S Edward Marder Family Foundation | | Lake Forest, IL | Local | 7 | 2024 | $4,500 |
| Super Scratch Championship Foundation Inc | | Lafayette Hl, PA | National | 1 | 2024 | $4,000 |
| Lloyd a Marks and Janice Siegelfoundation Inc | | Tampa, FL | National | 5 | 2024 | $4,000 |
| Grossman Family Charitable Funds Inc | | Bethesda, MD | National | 3 | 2024 | $3,300 |
| Reynolds Family Foundation | | Wilmington, DE | National | 1 | 2024 | $2,500 |
| Stieff Foundation Inc Ccs III | | Lutherville Timonium, MD | Local | 2 | 2024 | $2,000 |
| Earle I Mack Foundation Inc | | New Hyde Park, NY | Local | 1 | 2024 | $2,000 |
| The Keith Campbell Foundation for the Environment Inc | | Bethesda, MD | National | 1 | 2024 | $1,000 |
| Busch Family Foundation | | Fort Pierce, FL | Local | 1 | 2024 | $1,000 |
| Bechtel Group Foundation | | Glendale, AZ | National | 1 | 2024 | $1,000 |
| Barr Foundation | | Boston, MA | Local | 2 | 2024 | $600 |
| Charles Koch Foundation | | Arlington, VA | National | 5 | 2023 | $3,322,216 |
| The Richman Family Foundation Inc | | Baltimore, MD | Local | 3 | 2023 | $1,400,000 |
| First Look Institute Inc | | Los Gatos, CA | Local | 1 | 2023 | $997,000 |
| Breakthrough Energy Foundation | | Kirkland, WA | National | 1 | 2023 | $225,000 |
| Enterprise Community Partners Inc | | Columbia, MD | National | 1 | 2023 | $100,000 |
| Chessie Foundation Inc | | | National | 1 | 2023 | $100,000 |
| George and Ann Helena Howard Foundation | | Greenville, SC | Local | 4 | 2023 | $96,103 |
| Margaret and Jack Tarver Family Foundation | | Orlando, FL | Local | 3 | 2023 | $95,000 |
| Afcea Educational Foundation | | Alexandria, VA | Local | 2 | 2023 | $50,000 |
| Ruth and Samuel Salzberg Family Foundation Inc | | Rockville, MD | Local | 2 | 2023 | $40,000 |
| Omidyar Network Fund Inc | | San Francisco, CA | National | 1 | 2023 | $25,000 |
| Harry Frank Guggenheim Foundation | | New York, NY | National | 1 | 2023 | $25,000 |
| Crane Family Foundation Inc | | Baltimore, MD | Local | 1 | 2023 | $25,000 |
| Delaware State University | | Dover, DE | Local | 1 | 2023 | $19,804 |
| Institute for Responsive Government Inc | | Chicago, IL | Local | 1 | 2023 | $10,000 |
| Mathematical Association of America Incorporated | | Washington, DC | National | 1 | 2023 | $10,000 |
| Kinney Family Foundation | | Plainville, MA | National | 2 | 2023 | $10,000 |
| Community Foundation of Washington County Maryland Incorporated | | Hagerstown, MD | Local | 1 | 2023 | $9,000 |
| Union of Concerned Scientists Inc | | Cambridge, MA | Local | 1 | 2023 | $7,500 |
| Richman Foundation Inc | | Baltimore, MD | Local | 1 | 2023 | $5,000 |
| Dedalus Foundation Inc | | New York, NY | Local | 1 | 2023 | $2,500 |
| Select Equity Group Foundation | | New York, NY | Local | 4 | 2023 | $2,430 |
| The Growmark Foundation | | Bloomington, IL | Local | 1 | 2023 | $2,000 |
| The Abell Foundation Inc | | Baltimore, MD | Local | 2 | 2023 | $1,250 |
| Jason & Heidi Yao Family Foundation | | Redondo Beach, CA | Local | 1 | 2023 | $200 |
| Smart Life Family Foundation | | Vienna, VA | National | 1 | 2023 | $100 |
| Robert H Smith Family Foundation | | | — | 6 | 2022 | $18,314,418 |
| Waverley Street Foundation | | Palo Alto, CA | National | 1 | 2022 | $750,000 |
| Howard Hughes Medical Institute | | Chevy Chase, MD | National | 2 | 2022 | $535,000 |
| The Rothschild Art Foundation Inc | | Baltimore, MD | Local | 2 | 2022 | $253,000 |
| Brandeis University | | Waltham, MA | Local | 2 | 2022 | $128,122 |
| Environmental Defense Fund Incorporated | | New York, NY | National | 3 | 2022 | $111,273 |
| Indian Paintbrush Foundation | | Washington, DC | Local | 1 | 2022 | $75,000 |
| Masonic Foundation of the District of Columbia | | Washington, DC | National | 2 | 2022 | $22,500 |
| Douglas B Marshall Jr Family Foundation | | Houston, TX | National | 2 | 2022 | $21,500 |
| Moriah Fund Inc | | New York, NY | Local | 1 | 2022 | $15,000 |
| Climateworks Foundation | | San Francisco, CA | National | 1 | 2022 | $10,000 |
| Columbus Jewish Foundation | | Columbus, OH | Local | 1 | 2022 | $10,000 |
| Sam W Klein Charitable Foundation Inc | | Boca Raton, FL | National | 2 | 2022 | $9,500 |
| Namaste Foundation Inc | | Watchung, NJ | National | 2 | 2022 | $5,650 |
| David Bruce Smith Foundation Inc | | Arlington, VA | Local | 1 | 2022 | $3,000 |
| Muse Foundation Inc | | Annapolis, MD | Local | 2 | 2022 | $2,000 |
| Eutopia Foundation | | Wilmington, DE | Local | 1 | 2022 | $2,000 |
| Aerojet Rocketdyne Foundation | | | National | 3 | 2022 | $1,500 |
| Guilian Foundation | | Great Falls, VA | National | 1 | 2022 | $1,000 |
| Ning Foundation Inc | | Frederick, MD | — | 1 | 2022 | $400 |
| Robert Wood Johnson Foundation | | Princeton, NJ | National | 3 | 2021 | $3,026,000 |
| Dick and Betsy Devos Family Foundation | | Grand Rapids, MI | Local | 2 | 2021 | $1,500,000 |
| Newday USA Foundation Inc | | Fulton, MD | Local | 4 | 2021 | $624,750 |
| Gibbons Family Foundation Incorporated | | Baltimore, MD | Local | 3 | 2021 | $300,000 |
| Centene Foundation | | Saint Louis, MO | National | 2 | 2021 | $250,000 |
| Gates Foundation | | Seattle, WA | National | 1 | 2021 | $150,000 |
| Smart Family Foundation of New York | | Berkeley Hts, NJ | Local | 1 | 2021 | $100,000 |
| Pat Tillman Foundation | | Chicago, IL | — | 4 | 2021 | $83,000 |
| Good Ventures Foundation | | Palo Alto, CA | National | 1 | 2021 | $70,000 |
| Morgan Stanley Foundation | | New York, NY | Local | 2 | 2021 | $60,000 |
| Bender Foundation Inc | | Washington, DC | Local | 4 | 2021 | $55,000 |
| L3Harris Foundation Inc | | Melbourne, FL | National | 1 | 2021 | $50,000 |
| Toleo Foundation | | Greensboro, NC | National | 2 | 2021 | $50,000 |
| Phyllis L & Leonard J Attman Foundation Inc | | Owings Mills, MD | Local | 2 | 2021 | $50,000 |
| The Dr Lawrence Spielberger and Dr Greta Spanierman Family Foundation | | Cincinnati, OH | Local | 1 | 2021 | $50,000 |
| W Oneil Foundation | | Chevy Chase, MD | Local | 3 | 2021 | $45,000 |
| Lifebridge Health Inc | | Owings Mills, MD | Local | 2 | 2021 | $35,000 |
| Enterprise Holdings Foundation | | Saint Louis, MO | National | 3 | 2021 | $33,000 |
| W R Grace Foundation Inc | | Columbia, MD | Local | 4 | 2021 | $11,500 |
| Vozelo Society | | Miami Beach, FL | National | 1 | 2021 | $10,000 |
| Sierra Club | | Oakland, CA | National | 1 | 2021 | $8,000 |
| The Stanley Foundation | | Muscatine, IA | Local | 1 | 2021 | $5,000 |
| Sullivan Family Foundation | | | National | 1 | 2021 | $3,500 |
| Notley Foundation | | Austin, TX | Local | 1 | 2021 | $3,000 |
| Webster Bank Charitable Foundation | | Wilmington, DE | Local | 1 | 2021 | $2,000 |
| Jack Kent Cooke Foundation | | Lansdowne, VA | National | 3 | 2021 | $450 |
| Sanders Family Foundation 316C6100 | | New York, NY | Local | 2 | 2020 | $175,000 |
| Anita Borg Institute for Women and Technology | | Sacramento, CA | National | 3 | 2020 | $120,000 |
| Jaime Dannemann Memorial Foundation Inc | | | — | 1 | 2020 | $108,315 |
| National Center for Women and Information Technology | | Boulder, CO | Local | 4 | 2020 | $62,375 |
| Mid-Atlantic Association of Golf Course Superintendents Inc | | Hunt Valley, MD | — | 3 | 2020 | $60,000 |
| American Symphony Orchestra League | | New York, NY | National | 2 | 2020 | $45,000 |
| Maryland Asphalt Association Inc | | Glen Burnie, MD | — | 2 | 2020 | $29,000 |
| At&t Foundation | | Dallas, TX | National | 1 | 2020 | $27,000 |
| Mid Atlantic Arts Inc | | Baltimore, MD | National | 2 | 2020 | $25,040 |
| J S Plank and D M Dicarlo Family Foundation Inc | | Baltimore, MD | Local | 2 | 2020 | $23,000 |
| The Robert P and Arlene R Kogod Family Foundation | | Arlington, VA | — | 2 | 2020 | $20,000 |
| Bubes Family Foundation Inc | | | — | 1 | 2020 | $10,000 |
| David M Schwarz Architects Charitable Foundation Inc | | Bethesda, MD | National | 1 | 2020 | $10,000 |
| The Community Foundation of Howard County Inc | | Columbia, MD | Local | 1 | 2020 | $5,350 |
| International Union of Bricklayers and Allied Craftworkers | | Washington, DC | National | 1 | 2020 | $5,000 |
| National Press Foundation Inc | | Washington, DC | Local | 1 | 2020 | $2,500 |
| Elliot Mitchell Family Foundation Inc | | Rockville, MD | National | 2 | 2020 | $2,000 |
| Sami and Annie Totah Family Foundation | | Bethesda, MD | Local | 1 | 2020 | $500 |
| Universal Music Group Scholarship Foundation | | New York, NY | National | 1 | 2020 | $500 |
| Carp Family Foundation | | Bryn Mawr, PA | National | 1 | 2020 | $200 |
| Bruce and Karen Levenson Family Foundation Inc | | Mclean, VA | Local | 2 | 2019 | $8,876,671 |
| Henry & Elaine Kaufman Foundation Inc | | Albany, NY | National | 2 | 2019 | $800,000 |
| National Fire Protection Association | | Quincy, MA | Local | 2 | 2019 | $118,027 |
| Nhl Foundation U S Inc | | New York, NY | National | 1 | 2019 | $45,000 |
| Annie E Casey Foundation | | Baltimore, MD | National | 1 | 2019 | $35,200 |
| Manatee Community Foundation Inc | | Bradenton, FL | Local | 3 | 2019 | $26,000 |
| Kaiser Foundation Health Plan of the Mid Atlantic States Inc | | Hyattsville, MD | National | 1 | 2019 | $20,000 |
| Nuclear Threat Initiative Inc | | Washington, DC | Local | 1 | 2019 | $17,500 |
| Bunting Family Foundation Inc | | Hunt Valley, MD | Local | 2 | 2019 | $15,000 |
| Gerard & Ruth Daniel Foundation Inc | | Chevy Chase, MD | National | 2 | 2019 | $10,000 |
| Wright Family Foundation | | | — | 2 | 2019 | $10,000 |
| Sanford and Doris Slavin Foundation Inc | | | — | 3 | 2019 | $10,000 |
| David a Bramble Foundation Inc | | Chestertown, MD | Local | 2 | 2019 | $10,000 |
| The Dennis Berman Family Foundation Inc | | Rockville, MD | Local | 2 | 2019 | $5,500 |
| Adventist Healthcare Inc | | Gaithersburg, MD | Local | 1 | 2019 | $5,000 |
| Air Products Foundation | | Allentown, PA | National | 1 | 2019 | $1,500 |
| Robert and Joan Masterson Foundation | | Palm Desert, CA | Local | 1 | 2019 | $1,000 |
| Mitchell & Kathy Racoosin Family Foundation | | Mclean, VA | National | 1 | 2019 | $500 |
| Kertesz Family Foundation | | Woodmere, OH | Local | 1 | 2019 | $100 |
| Southern Company Charitable Foundation Inc | | Atlanta, GA | Local | 1 | 2019 | $25 |
| Michael Antonov Charitable Foundation Inc | | Woodbury, NY | Local | 1 | 2018 | $747,716 |
| Foundation for Jewish Philanthropies | | Getzville, NY | National | 1 | 2018 | $100,000 |
| Greensboro Jewish Federation | | Greensboro, NC | Local | 2 | 2018 | $40,000 |
| Kavli Foundation | | Los Angeles, CA | National | 1 | 2018 | $11,388 |
| Runestone Family Foundation | | Wilmington, DE | Local | 1 | 2018 | $10,000 |
| Responsible Retailing Forum Inc | | Chestnut Hill, MA | — | 2 | 2018 | $10,000 |
| Institute for Healthcare Advancement | | Anaheim, CA | National | 1 | 2018 | $10,000 |
| University of Maryland Medical System Corporation | | Linthicum Heights, MD | Local | 1 | 2018 | $7,500 |
| Tillie Jennie and Harold Schawartz Foundation Inc | | Sarasota, FL | Local | 1 | 2018 | $6,000 |
| E Bryce & Harriet Alpern Foundation | | | — | 1 | 2018 | $6,000 |
| Rmlow Foundation | | San Francisco, CA | Local | 1 | 2018 | $3,000 |
| Hand Foundation | | Wilmington, DE | Local | 1 | 2018 | $1,450 |
| Hanson Family Foundation | | Bethesda, MD | Local | 1 | 2018 | $1,000 |
| Grant Thornton Foundation | | Chicago, IL | National | 1 | 2018 | $900 |
| Clear Genesis Inc | | | Local | 2 | 2018 | $500 |
| Ford Foundation | | New York, NY | National | 1 | 2018 | $300 |
| W & W Charitable Foundation | | Cupertino, CA | Local | 1 | 2017 | $500 |