| MriglobalKansas City | Form 990 | $115,849,749FY2025 |
| Donald Danforth Plant Science CenterSaint Louis | Form 990 | $63,779,784FY2024 |
| St Louis Science Center FoundationSaint Louis | Form 990 | $10,815,081FY2025 |
| BiogeneratorSaint Louis | Form 990 | $8,693,429FY2024 |
| American Meat Science AssociationKearney | Form 990 | $3,505,196FY2024 |
| Bionexus KCKansas City | Form 990 | $2,284,256FY2024 |
| Maharishi Vedic Science and Technology FoundationSaint Louis | Form 990 | $1,973,696FY2025 |
| St Louis Regional Advanced Manufacturing Innovation CenterClayton | Form 990 | $1,924,781FY2024 |
| CyberupSaint Louis | Form 990 | $1,093,869FY2025 |
| Leonard Wood Institute IncFort Leonard Wood | Form 990 | $979,187FY2025 |
| Society of Plastics EngineersCrocker | Form 990 | $623,144FY2025 |
| Owner-Operator Independent Drivers Association Foundation IncGrain Valley | Form 990 | $339,303FY2024 |
| Clean Fuels Alliance FoundationJefferson City | Form 990 | $276,486FY2025 |
| St Louis Software Developers Education AssociationChesterfield | Form 990 | $246,091FY2025 |
| Hekademeia Research SolutionsJefferson City | Form 990 | $225,631FY2025 |
| One Spirit Engineering IncSaint Louis | Form 990-EZ | $183,500FY2025 |
| Imaging for GoodSaint Louis | Form 990-EZ | $152,751FY2025 |
| Ird Association IncSedalia | Form 990-EZ | $139,531FY2025 |
| Association of Earth Science Clubs of Greater Kansas City Inc 1000 PoIndependence | Form 990-EZ | $125,696FY2026 |
| American Chemical SocietyColumbia | Form 990 | $113,152FY2024 |
| North American Plant Phenotyping NetworkSaint Louis | Form 990-EZ | $83,627FY2026 |
| STEM on WheelsSaint Louis | Form 990-EZ | $76,404FY2024 |
| Gateway Section of IteSaint Charles | Form 990-EZ | $71,568FY2025 |
| Alpha Psi of Theta Xi Charitable FoundationFenton | Form 990-EZ | $60,370FY2024 |
| Icak IncGrant City | Form 990-EZ | $51,245FY2026 |
| WEB3 Working GroupKansas City | Form 990-N | No figure |
| Sling HealthSaint Louis | Form 990-N | No figure |
| Missouri ArmlFlorissant | Form 990-N | No figure |
| Association of Missouri GeologistsKansas City | Form 990-N | No figure |
| Alliance for Astronomy IncForistell | Form 990-N | No figure |
| Central Plains Society of MammalogistsUnionville | Form 990-N | No figure |
| Missouri Academy of ScienceWarrensburg | Form 990-N | No figure |
| Missouri Center for Advanced Power Systems ResearchJoplin | Form 990-N | No figure |
| Advanced Renewable Energy Sciences Foundation-Are Sciences FoundationSaint Louis | Form 990-N | No figure |
| Columbia Gadget WorksColumbia | Form 990-N | No figure |
| Global Bioethics Initiative IncJefferson City | Form 990-N | No figure |
| Gateway Professional Horticulturist AssociationBallwin | Form 990-N | No figure |
| Lees Summit Robotics Education and Development IncLee's Summit | Form 990-N | No figure |
| Springfield Plateau Grotto of the National Speleological SocietySpringfield | Form 990-N | No figure |
| Missouri Mycological SocietySaint Louis | Form 990-N | No figure |
| Missouri Society of Otolaryngolgy Head & Neck SurgeryColumbia | Form 990-N | No figure |
| Test the Shroud FoundationEureka | Form 990-N | No figure |
| Eaa South Central Ozarks Chapter 1218Willow Springs | Form 990-N | No figure |
| Missouri Forest FoundationJefferson City | Form 990-N | No figure |
| Audrain County Area Genealogical SocietyMexico | Form 990-N | No figure |
| Fruit of Forgiveness MinistryBlue Springs | Form 990-N | No figure |
| Camden County Astronomy AssociationSunrise Beach | Form 990-N | No figure |
| Ozark Section of the American Chemical SocietySpringfield | Form 990-N | No figure |
| Woodturners of Southwest MissouriSpringfield | Form 990-N | No figure |
| Saint Louis Actuaries ClubCreve Coeur | Form 990-N | No figure |