| Gallagher Family Foundation | | Waterloo, IA | Local | 7 | 2024 | $376,000 |
| Fred Maytag Family Foundation | | San Francisco, CA | National | 7 | 2024 | $340,000 |
| Max and Helen Guernsey Charitable Foundation | | Cedar Falls, IA | Local | 6 | 2024 | $200,000 |
| William C & Dorotha Gaedke Charitable Tr | | Milwaukee, WI | Local | 7 | 2024 | $128,245 |
| R J Mcelroy Trust | | Waterloo, IA | Local | 2 | 2024 | $60,000 |
| Otto Schoitz Foundation | | Waterloo, IA | Local | 4 | 2023 | $125,000 |
| Charlotte and William Hinson Charitable Foundation Trust | | Wdm, IA | Local | 1 | 2023 | $1,000 |
| Pauline R Barrett Charitable Foundation | | Saint Louis, MO | Local | 4 | 2022 | $225,000 |
| Young Family Foundation of Waterloo Iowa | | Waterloo, IA | Local | 1 | 2022 | $25,000 |
| Molinaro Family Charitable Foundation | | Waterloo, IA | Local | 2 | 2022 | $6,000 |
| Boazs Harvest-Zachary Foundatoin | | Cedar Falls, IA | National | 1 | 2022 | $1,000 |
| Black Hawk County Gaming Assoc | | Waterloo, IA | — | 3 | 2020 | $187,912 |
| Roy J Carver Charitable Tr | | Muscatine, IA | Local | 1 | 2019 | $58,000 |
| Van G Miller Family Charitable Foundation | | Waterloo, IA | Local | 2 | 2019 | $20,000 |
| Veridian Credit Union | | Waterloo, IA | Local | 1 | 2019 | $15,000 |
| Lsb Foundation | | Reinbeck, IA | Local | 1 | 2019 | $1,000 |
| Ira D Kauffman Charitable Community Tr | | State Center, IA | — | 1 | 2019 | $200 |
| Iowa Farm Bureau Federation | | Wdm, IA | Local | 1 | 2018 | $10,000 |
| Braun Family Foundation | | Cedar Falls, IA | Local | 1 | 2018 | $500 |