| American Academy of AllergyMilwaukee | Form 990 | $17,597,093FY2024 |
| The American Society of Gene & Cell TherapyWaukesha | Form 990 | $16,914,337FY2024 |
| Superior Health Quality Alliance IncMadison | Form 990 | $15,948,657FY2024 |
| Wicell Research Institute IncMadison | Form 990 | $8,652,497FY2025 |
| Heartland Health Research Alliance LtdBrookfield | Form 990 | $2,225,380FY2025 |
| Cervical Spine Research Society IncMilwaukee | Form 990 | $2,031,550FY2024 |
| Society for Research on Nicotine and TobaccoWindsor | Form 990 | $1,506,587FY2024 |
| Society for Reproductive InvestigationMilwaukee | Form 990 | $1,153,676FY2025 |
| National Niemann-Pick Disease FoundationFort Atkinson | Form 990 | $929,337FY2025 |
| International Zebrafish Society IncMilwaukee | Form 990 | $845,766FY2024 |
| International Psychogeriatric AssociationMilwaukee | Form 990 | $703,691FY2024 |
| Brain Inflammation Collaborative IncDelafield | Form 990 | $639,120FY2024 |
| International Alliance for Phytobiomes Research IncEau Claire | Form 990 | $560,265FY2024 |
| Rock County Cancer CoalitionJanesville | Form 990 | $511,422FY2025 |
| Bryon Riesch Paralysis Foundation IncWaukesha | Form 990 | $473,232FY2025 |
| Conquering Congenital Heart DiseaseMiddleton | Form 990 | $291,957FY2023 |
| Strain for the Brain IncBrookfield | Form 990 | $289,850FY2025 |
| Perinatal Foundation IncMilwaukee | Form 990 | $273,747FY2024 |
| American Society for Mohs HistotechnologyMilwaukee | Form 990 | $260,575FY2024 |
| Univ of Oregon Health Sciences Dept of Anesthesias Research & EducatMilwaukee | Form 990 | $244,031FY2024 |
| International Association of PancreatologyMilwaukee | Form 990 | $230,900FY2024 |
| Littlest Tumor FoundationAppleton | Form 990-EZ | $187,192FY2025 |
| Brain Center of Green Bay IncGreen Bay | Form 990 | $182,342FY2025 |
| Megans MissionLodi | Form 990-EZ | $144,755FY2025 |
| Cure for Casey IncOregon | Form 990-EZ | $115,524FY2025 |
| International Society for Otitis Media IncMilwaukee | Form 990-EZ | $110,494FY2025 |
| Help Find a Cure for MS IncNeenah | Form 990-EZ | $107,309FY2025 |
| Good Friend IncWales | Form 990-EZ | $101,412FY2024 |
| Breath of Life FoundationMenasha | Form 990-EZ | $86,695FY2024 |
| Superficial Siderosis Research AllianceWaukesha | Form 990-EZ | $86,443FY2025 |
| International Cell Research OrganizationMadison | Form 990-EZ | $85,464FY2025 |
| Cyclic Vomiting Syndrome Association IncWest Allis | Form 990-EZ | $78,790FY2025 |
| Foundation for Heart Science LtdWawautosa | Form 990 | $65,350FY2025 |
| The Association of Indian Neurologists in AmericaKimberly | Form 990-EZ | $62,973FY2024 |
| Brady Wynn Foundation IncGrafton | Form 990-EZ | $62,915FY2024 |
| Morgan Matthew FoundationSlinger | Form 990-EZ | $59,120FY2023 |
| Thompson-Wood Foundation IncSun Prairie | Form 990-EZ | $49,188FY2025 |
| PKS KidsGreen Bay | Form 990-N | No figure |
| Golf Fore Sandy FoundationWaukesha | Form 990-N | No figure |
| Becky Werner Foundation IncPalmyra | Form 990-EZ | $25,461FY2025 |
| Loeffel Epilepsy FoundationSalem | Form 990-EZ | $17,671FY2025 |
| Isthmus Project IncMadison | Form 990-N | No figure |
| Madison Central Lions Foundation IncFitchburg | Form 990-N | No figure |
| Alliance for Post Abortion Research and Training IncFitchburg | Form 990-N | No figure |
| Love 4 Lexi L4L Foundation IncGrafton | Form 990-N | No figure |
| Nanda FoundationOconto Falls | Form 990-N | No figure |
| Jodi Lou Lung Cancer Foundation IncMadison | Form 990-N | No figure |
| International Institute of Systems Medicine IncMilwaukee | Form 990-N | No figure |
| Chasing Chad CorpPewaukee | Form 990-N | No figure |
| Pain Research Foundation IncMadison | Form 990-N | No figure |