| Gearbox Labs IncSouth Milwaukee | Form 990-EZ | $114,892FY2022 |
| On the Mark Dyslexia ClinicGreen Bay | Form 990-EZ | $114,721FY2025 |
| Mukwonago Area Public Schools Education Foundation IncMukwonago | Form 990-EZ | $114,074FY2026 |
| Pewaukee High School Booster ClubPewaukee | Form 990 | $113,370FY2025 |
| River Falls Wildcat Band Boosters IncRiver Falls | Form 990-EZ | $113,258FY2025 |
| Wisconsin Title I AssociationBaraboo | Form 990-EZ | $113,108FY2026 |
| Parkview Elementary PTO IncCedarburg | Form 990-EZ | $110,934FY2025 |
| Women in Focus IncorporatedMadison | Form 990-EZ | $110,352FY2025 |
| Swallow Education Foundation IncHartland | Form 990-EZ | $109,591FY2025 |
| Elmwood Home and SchoolNew Berlin | Form 990-EZ | $108,652FY2026 |
| CHS Athletic Booster Club IncSalem | Form 990-EZ | $108,158FY2026 |
| Galin Scholars IncMadison | Form 990-EZ | $108,031FY2024 |
| Van Hise Parent Teacher Organization IncMadison | Form 990-EZ | $107,416FY2025 |
| Eau Claire Chamber Educational Foundation IncEau Claire | Form 990-EZ | $107,204FY2025 |
| Hedberg Public Library Foundation IncJanesville | Form 990 | $106,997FY2024 |
| Academy for Surgical Coaching IncMadison | Form 990-EZ | $104,650FY2025 |
| Helping Hands Healing Hooves IncCedarburg | Form 990-EZ | $104,537FY2024 |
| College Endowment Association IncBrookfield | Form 990 | $104,515FY2026 |
| Innovative Educational Solutions Institute IncMilwaukee | Form 990-EZ | $104,282FY2024 |
| Creating Possibilities IncWatertown | Form 990-EZ | $104,206FY2025 |
| The Riverside University High School Foundation IncMilwaukee | Form 990-EZ | $103,985FY2025 |
| Wisconsin Education Fairs IncFond du Lac | Form 990-EZ | $103,715FY2025 |
| Kids Chance of Wisconsin IncBrookfield | Form 990-EZ | $102,657FY2024 |
| Friends of the Plumer Mine Headframe IncHurley | Form 990-EZ | $102,634FY2024 |
| Antigo Grid Iron ClubAntigo | Form 990-EZ | $101,802FY2025 |
| Cumberland Tsap Library Foundation IncCumberland | Form 990 | $101,588FY2024 |
| Altrusa International Foundation IncSturgeon Bay | Form 990-EZ | $101,516FY2025 |
| Monticello Foundation IncMonticello | Form 990 | $101,319FY2025 |
| St Aloysius Home & School Association IncSauk City | Form 990-EZ | $101,068FY2025 |
| Wisconsin Education Association Professional Development Academy IMadison | Form 990-EZ | $100,530FY2025 |
| Mac Raiders IncMarathon | Form 990 | $99,877FY2025 |
| Dental Forum of Milwaukee IncMilwaukee | Form 990-EZ | $99,728FY2025 |
| Innovation Center Stoughton IncStoughton | Form 990-EZ | $98,858FY2025 |
| Cumberland School Parent Teacher OrganizationWhitefish Bay | Form 990-EZ | $98,317FY2025 |
| Wisconsin Civil Justice Education Foundation IncMadison | Form 990 | $97,404FY2024 |
| Richland Center High School Athletic Booster Club IncRichland Center | Form 990-EZ | $96,441FY2025 |
| Wisconsin Coalition on Student Loan Debt IncMadison | Form 990-EZ | $96,230FY2025 |
| Concerned Actuaries Group IncMequon | Form 990-EZ | $96,200FY2025 |
| Oak Creek High School Robotics Booster ClubOak Creek | Form 990-EZ | $96,194FY2026 |
| Parent Booster USA IncEast Troy | Form 990-EZ | $96,004FY2026 |
| New Manufacturing Alliance Scholarship Fund IncGreen Bay | Form 990-EZ | $95,397FY2024 |
| Menomonee Falls Booster Club IncMenomonee Falls | Form 990-EZ | $94,946FY2025 |
| Tonawanda Elementary School PTOElm Grove | Form 990-EZ | $94,024FY2025 |
| Hope Valley Conservancy IncBlanchardville | Form 990-EZ | $93,500FY2025 |
| Parent Booster USA IncRice Lake | Form 990-EZ | $93,074FY2026 |
| Fox Valley Competitive RoboticsAppleton | Form 990-EZ | $92,610FY2025 |
| Legacy Committee IncOconomowoc | Form 990-EZ | $92,290FY2025 |
| Horicon Marsh Archers IncMayville | Form 990 | $91,871FY2025 |
| Gonstead Methodology Institute Worldwide IncGreen Bay | Form 990-EZ | $91,409FY2025 |
| Wisconsin Progress Institute IncMadison | Form 990-EZ | $91,252FY2025 |