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The Mousetrap Foundation C/O Sterling Foundation Management LLC

Reston, VA · EIN 522285383 990-PF tax year 2024

Historical funder research: IRS Form 990-PF filings from US private foundations, showing who funded what in past years. This is not a list of currently open grant calls, and we do not track open RFPs from private foundations. From public IRS Form 990-PF filings (latest on file for this funder: tax year 2024). Coverage: tax years 2019–2025. Freshness: the IRS releases these returns 1.5–2+ years after the tax year ends, so 2025 is still partial and a funder's newest grants may not appear yet. Last updated: November 14, 2026. Filings can contain errors, so confirm current priorities and deadlines with the funder before applying.

Grants paid (tax yr 2024)
$1,430,946
Assets (fair market value)
$17,046,597
Median grant to orgs
$50,000
all loaded years
Grants in our data
68
since tax year 2022
Giving by tax year
$1,685,892
2022
15 grants
$1,754,399
2023
37 grants
$1,430,946
2024
16 grants

Year 2025 is still partial because many returns have not been filed or released yet. That is a freshness issue — coverage in our dataset is tax years 2019–2025.

Top recipient states
DC$1,899,237
VA$1,600,000
CA$520,000
IL$300,000
MT$250,000
MI$100,000
WA$75,000
NY$42,000
Cause areas funded
Education4
Human Services7
Environment5
Recreation & Sports3
Public & Societal Benefit2
Crime & Legal1
International Affairs1
Community Improvement2

Only 41.2% of this funder's organizational grants could be linked to an IRS cause code.

How to apply (from the 990-PF, tax year 2024)
Form & materials
NONE PRESCRIBED
Deadlines
NONE
Restrictions
RECOGNIZED SECTION 501(C)(3) CHARITABLE ORGANIZATIONS ONLY
Recent grants to organizations
RecipientLocationPurpose (as filed)AmountTax yr
Howard UniversityWashington, DCGENERAL SUPPORT$220,9462024
Stanford Law SchoolStanford, CAGENERAL SUPPORT$200,0002024
Georgetown University Law CenterWashington, DCGENERAL SUPPORT$150,0002024
Piedmont Environmental CouncilWarrenton, VAGENERAL SUPPORT$125,0002024
Ayuda IncWashington, DCGENERAL SUPPORT$125,0002024
National MuseumWashington, DCGENERAL SUPPORT$100,0002024
Best BuddiesFalls Church, VAGENERAL SUPPORT$100,0002024
The Fauquier Free ClinicWarrenton, VAGENERAL SUPPORT$100,0002024
Ford's TheatreWashington, DCGENERAL SUPPORT$60,0002024
University of MichiganAnn Arbor, MIGENERAL SUPPORT$50,0002024
University of VirginiaCharlottesville, VAGENERAL SUPPORT$50,0002024
Glacier National Park ConservancyColumbia Falls, MTGENERAL SUPPORT$50,0002024
Fenwick FoundationArlington, VAGENERAL SUPPORT$50,0002024
Carroll Child CareWestminster, MDGENERAL SUPPORT$25,0002024
Westminster Presbyterian ChurchChehalis, WAGENERAL SUPPORT$20,0002024
The Chehalis FoundationChehalis, WAGENERAL SUPPORT$5,0002024
Howard UniversityWashington, DCGENERAL SUPPORT$210,8992023
Stanford Law SchoolStanford, CAGENERAL SUPPORT$200,0002023
American Nutrition AssociationChicago, ILGENERAL SUPPORT$200,0002023
Repro Rising VirginiaAlexandria, VAGENERAL SUPPORT$175,0002023
Georgetown University Law CenterWashington, DCGENERAL SUPPORT$150,0002023
Piedmont Environmental CouncilWarrenton, VAGENERAL SUPPORT$125,0002023
Ayuda IncWashington, DCGENERAL SUPPORT$125,0002023
The Fauquier Free ClinicWarrenton, VAGENERAL SUPPORT$100,0002023
Virginia Public Access ProjectRichmond, VAGENERAL SUPPORT$50,0002023

Grants to individuals are counted but not named.

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