| American Gas Association | | Washington, DC | Local | 7 | 2024 | $89,710 |
| Gail D Bassin Family Foundation | | Washington, DC | Local | 2 | 2024 | $18,500 |
| Rick and Susan Goings Foundation | | Woodbridge, NJ | Local | 4 | 2024 | $12,500 |
| Pharmaceutical Research and Manufacturers of America | | Washington, DC | Local | 1 | 2024 | $7,500 |
| Biotechnology Innovation Organization | | Washington, DC | National | 1 | 2024 | $7,500 |
| Coyle Family Foundation | | Wilmington, DE | National | 1 | 2024 | $4,500 |
| Morrissette Family Foundation Inc | | Springfield, VA | National | 1 | 2024 | $3,350 |
| Clark Charitable Foundation Inc | | Bethesda, MD | National | 4 | 2023 | $400,000 |
| Focused Ultrasound Foundation | | Charlottesvle, VA | National | 1 | 2023 | $5,500 |
| Ryna and Melvin Cohen Family Foundation Inc | | Beltsville, MD | National | 1 | 2023 | $3,000 |
| Katten Muchin Rosenman Foundation Inc | | Chicago, IL | National | 1 | 2020 | $9,375 |
| The Heyday Foundation | | New York, NY | National | 3 | 2020 | $7,500 |
| Vradenburg Foundation | | Washington, DC | National | 2 | 2020 | $5,000 |
| Rabbitt Whalen Family Foundation Inc | | Bethesda, MD | Local | 1 | 2019 | $100,000 |
| Sachiko Kuno Foundation Inc | | | — | 2 | 2019 | $43,500 |
| Air Line Pilots Association International | | Mclean, VA | Local | 1 | 2019 | $7,000 |
| Citybridge Foundation | | Washington, DC | — | 1 | 2019 | $5,000 |
| Galena-Yorktown Foundation | | Washington, DC | National | 1 | 2019 | $2,500 |
| Constitution Foundation | | Annapolis, MD | Local | 1 | 2018 | $23,360 |
| Rfi Family Foundation Inc | | Bethesda, MD | National | 1 | 2018 | $2,500 |
| Lucy Webb Haynes National Training School for Deaconesses and Mission | | Washington, DC | Local | 1 | 2017 | $6,000 |