| Butler Family Foundation | | Dubuque, IA | Local | 4 | 2024 | $1,507,500 |
| Ray and Kay Eckstein Charitable Trust | | Paducah, KY | National | 4 | 2024 | $1,010,000 |
| Community Foundation of Greater Dubuque | | Dubuque, IA | Local | 3 | 2024 | $179,160 |
| American Association of Zoological Parks and Aquariums Inc | | Silver Spring, MD | National | 4 | 2024 | $96,418 |
| James & Melita a Mcdonough Foundation | | Dubuque, IA | Local | 5 | 2024 | $31,500 |
| Michael E Portzen and Sara a Portzen Family Foundation | | Peosta, IA | Local | 2 | 2024 | $30,000 |
| Becker Family Charitable Tr | | Dubuque, IA | Local | 1 | 2024 | $20,000 |
| Greenstate Credit Union | | | Local | 2 | 2024 | $17,500 |
| Klauer Foundation Trust | | Chicago, IL | Local | 7 | 2024 | $7,000 |
| Schoen Family Charitable Trust | | Loudon, TN | Local | 1 | 2024 | $5,000 |
| Alexander D Larson Gift Fund 00670000 | | Dubuque, IA | Local | 4 | 2023 | $43,500 |
| Charitable Foundation for Academic and Social Excellence | | | Local | 1 | 2023 | $30,000 |
| Eugenie & Joseph Jones Family Foundation | | New Orleans, LA | Local | 1 | 2023 | $10,000 |
| Dubuque Racing Association Ltd | | Dubuque, IA | Local | 4 | 2022 | $205,000 |
| Community Foundation of Greater Chattanooga Inc | | Chattanooga, TN | Local | 1 | 2022 | $15,000 |
| Smithsonian Institute | | Washington, DC | National | 1 | 2022 | $7,000 |
| Jeffris Family Foundation Ltd | | Janesville, WI | National | 2 | 2021 | $285,000 |
| Andersen Corporate Foundation | | Bayport, MN | Local | 3 | 2021 | $20,000 |
| Flynn Family Foundation | | Epworth, IA | Local | 1 | 2021 | $10,000 |
| Walton Family Foundation Inc | | Bentonville, AR | National | 1 | 2020 | $100,000 |
| Eqt Foundation | | Canonsburg, PA | Local | 2 | 2020 | $27,642 |
| Falb Family Charitable Foundation | | Dubuque, IA | Local | 1 | 2020 | $25,000 |
| Vanderpoel Conservation Foundation | | Chicago, IL | Local | 2 | 2020 | $2,000 |