Grants paid by The Mousetrap Foundation C/O Sterling Foundation Management LLC
EIN 52-2285383 · Reston, VA · Form 990-PF, Part XV · NTEE T22
The Mousetrap Foundation C/O Sterling Foundation Management LLC of Reston, VA (EIN 52-2285383) reported 114 grants paid totaling $10,095,501 to 51 recipients in tax years 2018–2024, on Form 990-PF, Part XV. Derived from IRS e-file data, dataset version 2026.09.0, built 2026-09-03.
Grants paid
$10,095,501
114 grants
Recipients
51
distinct organizations
Tax years
2018–2024
7 filings in the corpus
By tax year
| Tax year | Grants paid | Amount paid | Approved for future |
|---|---|---|---|
| 2018 | 11 | $1,095,000 | — |
| 2019 | 10 | $1,045,000 | — |
| 2020 | 10 | $1,337,500 | — |
| 2021 | 15 | $1,746,764 | — |
| 2022 | 15 | $1,685,892 | — |
| 2023 | 37 | $1,754,399 | — |
| 2024 | 16 | $1,430,946 | — |
Top recipients
The 51 recipients receiving the most from The Mousetrap Foundation C/O Sterling Foundation Management LLC, by grants paid, out of 51 distinct recipients.
| Recipient | Match | Location | Grants | Total paid | Latest year |
|---|---|---|---|---|---|
| Ayuda Inc 52-0971440 | C | Washington, DC | 7 | $1,075,000 | 2024 |
| Georgetown University Law Center | U | Washington, DC | 7 | $1,050,000 | 2024 |
| Howard University | U | Washington, DC | 4 | $873,661 | 2024 |
| Piedmont Environmental Council 54-0935569 | C | Warrenton, VA | 7 | $837,500 | 2024 |
| The Fauquier Free Clinic 54-1669652 | B | Warrenton, VA | 7 | $700,000 | 2024 |
| Naral Pro-Choice America Foundation | U | Alexandria, VA | 5 | $625,000 | 2022 |
| Stanford Law School 39-2201956 | D | Stanford, CA | 4 | $600,000 | 2024 |
| Loudoun County Free Clinic 47-2008820 | D | Leesburg, VA | 5 | $500,000 | 2022 |
| The Greenhouse Project | U | Linthicum, MD | 2 | $500,000 | 2020 |
| Center for Innovation 47-5586381 | B | Linthicum, MD | 2 | $400,000 | 2021 |
| Glacier National Park Conservancy 56-2579734 | B | Columbia Falls, MT | 7 | $350,000 | 2024 |
| Virginia Public Access Project 54-1825691 | B | Richmond, VA | 6 | $300,000 | 2023 |
| American Nutrition Association 06-0971131 | C | Chicago, IL | 2 | $300,000 | 2023 |
| World Central Kitchen 27-3521132 | C | Washington, DC | 4 | $275,000 | 2022 |
| Well Done Foundation 84-4559447 | C | Shelby, MT | 2 | $205,840 | 2022 |
| Fenwick Foundation 27-4879033 | B | Arlington, VA | 4 | $200,000 | 2024 |
| Stanford University 26-4580872 | C | Stanford, CA | 2 | $200,000 | 2019 |
| Campaign Legal Center 04-3608387 | B | Washington, DC | 2 | $200,000 | 2022 |
| Repro Rising Virginia 41-2051991 | B | Alexandria, VA | 1 | $175,000 | 2023 |
| Best Buddies | U | Falls Church, VA | 1 | $100,000 | 2024 |
| National Museum | U | Washington, DC | 1 | $100,000 | 2024 |
| Ford's Theatre | U | Washington, DC | 1 | $60,000 | 2024 |
| University of Michigan | U | Ann Arbor, MI | 1 | $50,000 | 2024 |
| University of Virginia | U | Charlottesville, VA | 1 | $50,000 | 2024 |
| Michigan Law School | U | Ann Arbor, MI | 1 | $50,000 | 2023 |
| Westminster Presbyterian Church | U | Chehalis, WA | 2 | $45,000 | 2024 |
| Carroll Child Care 52-0890366 | D | Westminster, MD | 1 | $25,000 | 2024 |
| Land Trust of Virginia 54-1601471 | C | Middleburg, VA | 1 | $15,000 | 2023 |
| The Chehalis Foundation 51-1148560 | B | Chehalis, WA | 2 | $15,000 | 2024 |
| The National Trust for Historic Preservation 53-0210807 | D | Washington, DC | 1 | $15,000 | 2023 |
| Peer 93-1102740 | B | Silver Spring, MD | 1 | $15,000 | 2023 |
| International Rescue Committee | U | Albert Lea, MN | 1 | $15,000 | 2023 |
| American Bird Conservancy 52-1501259 | C | The Plains, VA | 1 | $15,000 | 2023 |
| Unicef | U | New York, NY | 1 | $10,000 | 2023 |
| Public Citizen 23-7104508 | B | Washington, DC | 1 | $10,000 | 2023 |
| Children's Home Society of Virginia 54-0505884 | B | Richmond, VA | 1 | $10,000 | 2023 |
| Aclu | U | New York, NY | 1 | $10,000 | 2023 |
| Red Rover | U | Sacramento, CA | 1 | $10,000 | 2023 |
| Aarp Foundation 52-0794300 | C | Washington, DC | 1 | $10,000 | 2023 |
| Ifaw | U | Yarmouth Port, MA | 1 | $10,000 | 2023 |
| Raices 74-2436920 | C | San Antonio, TX | 1 | $10,000 | 2023 |
| Island Chapel 83-0458658 | B | Lummi Island, WA | 1 | $10,000 | 2023 |
| Innocence Project 32-0077563 | B | New York, NY | 1 | $10,000 | 2023 |
| Pogo | U | Washington, DC | 1 | $10,000 | 2023 |
| Wildlife Conservation Society | U | Washington, DC | 1 | $10,000 | 2023 |
| Aarp | U | Long Beach, CA | 1 | $10,000 | 2023 |
| World Conservation Society 99-2723722 | D | Bronx, NY | 1 | $10,000 | 2023 |
| Oxfam | U | Boston, MA | 1 | $10,000 | 2023 |
| Discover Children's Museum 47-1920113 | B | Chehalis, WA | 1 | $5,000 | 2023 |
| Committee to Protect Journalists 13-3081500 | C | New York, NY | 1 | $2,000 | 2023 |
| Wamu | U | Washington, DC | 1 | $1,500 | 2023 |
Match tier: A Reported EIN · B Exact name and place · C Strong name match · D Probable name match · U Unresolved. Tiers C and D are inferred, not reported; see how matching works.
Every grant
All 114 grant rows this organization reported, most recent first.
| Tax year | Recipient | Match | Amount | Type | Purpose | Source filing |
|---|---|---|---|---|---|---|
| 2024 | Howard University Washington, DC | U | $220,946 | paid | GENERAL SUPPORT | 202513219349102401 |
| 2024 | Stanford Law School Stanford, CA | D | $200,000 | paid | GENERAL SUPPORT | 202513219349102401 |
| 2024 | Georgetown University Law Center Washington, DC | U | $150,000 | paid | GENERAL SUPPORT | 202513219349102401 |
| 2024 | Piedmont Environmental Council Warrenton, VA | C | $125,000 | paid | GENERAL SUPPORT | 202513219349102401 |
| 2024 | Ayuda Inc Washington, DC | C | $125,000 | paid | GENERAL SUPPORT | 202513219349102401 |
| 2024 | National Museum Washington, DC | U | $100,000 | paid | GENERAL SUPPORT | 202513219349102401 |
| 2024 | The Fauquier Free Clinic Warrenton, VA | B | $100,000 | paid | GENERAL SUPPORT | 202513219349102401 |
| 2024 | Best Buddies Falls Church, VA | U | $100,000 | paid | GENERAL SUPPORT | 202513219349102401 |
| 2024 | Ford's Theatre Washington, DC | U | $60,000 | paid | GENERAL SUPPORT | 202513219349102401 |
| 2024 | Fenwick Foundation Arlington, VA | B | $50,000 | paid | GENERAL SUPPORT | 202513219349102401 |
| 2024 | Glacier National Park Conservancy Columbia Falls, MT | B | $50,000 | paid | GENERAL SUPPORT | 202513219349102401 |
| 2024 | University of Michigan Ann Arbor, MI | U | $50,000 | paid | GENERAL SUPPORT | 202513219349102401 |
| 2024 | University of Virginia Charlottesville, VA | U | $50,000 | paid | GENERAL SUPPORT | 202513219349102401 |
| 2024 | Carroll Child Care Westminster, MD | D | $25,000 | paid | GENERAL SUPPORT | 202513219349102401 |
| 2024 | Westminster Presbyterian Church Chehalis, WA | U | $20,000 | paid | GENERAL SUPPORT | 202513219349102401 |
| 2024 | The Chehalis Foundation Chehalis, WA | B | $5,000 | paid | GENERAL SUPPORT | 202513219349102401 |
| 2023 | Howard University Washington, DC | U | $210,899 | paid | GENERAL SUPPORT | 202403209349104375 |
| 2023 | American Nutrition Association Chicago, IL | C | $200,000 | paid | GENERAL SUPPORT | 202403209349104375 |
| 2023 | Stanford Law School Stanford, CA | D | $200,000 | paid | GENERAL SUPPORT | 202403209349104375 |
| 2023 | Repro Rising Virginia Alexandria, VA | B | $175,000 | paid | GENERAL SUPPORT | 202403209349104375 |
| 2023 | Georgetown University Law Center Washington, DC | U | $150,000 | paid | GENERAL SUPPORT | 202403209349104375 |
| 2023 | Ayuda Inc Washington, DC | C | $125,000 | paid | GENERAL SUPPORT | 202403209349104375 |
| 2023 | Piedmont Environmental Council Warrenton, VA | C | $125,000 | paid | GENERAL SUPPORT | 202403209349104375 |
| 2023 | The Fauquier Free Clinic Warrenton, VA | B | $100,000 | paid | GENERAL SUPPORT | 202403209349104375 |
| 2023 | Virginia Public Access Project Richmond, VA | C | $50,000 | paid | GENERAL SUPPORT | 202403209349104375 |
| 2023 | Glacier National Park Conservancy Columbia Falls, MT | B | $50,000 | paid | GENERAL SUPPORT | 202403209349104375 |
| 2023 | Fenwick Foundation Arlington, VA | B | $50,000 | paid | GENERAL SUPPORT | 202403209349104375 |
| 2023 | Michigan Law School Ann Arbor, MI | U | $50,000 | paid | GENERAL SUPPORT | 202403209349104375 |
| 2023 | Westminster Presbyterian Church Chehalis, WA | U | $25,000 | paid | GENERAL SUPPORT | 202403209349104375 |
| 2023 | Peer Silver Spring, MD | B | $15,000 | paid | GENERAL SUPPORT | 202403209349104375 |
| 2023 | International Rescue Committee Albert Lea, MN | U | $15,000 | paid | GENERAL SUPPORT | 202403209349104375 |
| 2023 | Land Trust of Virginia Middleburg, VA | C | $15,000 | paid | GENERAL SUPPORT | 202403209349104375 |
| 2023 | The National Trust for Historic Preservation Washington, DC | D | $15,000 | paid | GENERAL SUPPORT | 202403209349104375 |
| 2023 | American Bird Conservancy The Plains, VA | C | $15,000 | paid | GENERAL SUPPORT | 202403209349104375 |
| 2023 | Wildlife Conservation Society Washington, DC | U | $10,000 | paid | GENERAL SUPPORT | 202403209349104375 |
| 2023 | Public Citizen Washington, DC | B | $10,000 | paid | GENERAL SUPPORT | 202403209349104375 |
| 2023 | Island Chapel Lummi Island, WA | B | $10,000 | paid | GENERAL SUPPORT | 202403209349104375 |
| 2023 | Oxfam Boston, MA | U | $10,000 | paid | GENERAL SUPPORT | 202403209349104375 |
| 2023 | Innocence Project New York, NY | B | $10,000 | paid | GENERAL SUPPORT | 202403209349104375 |
| 2023 | Ifaw Yarmouth Port, MA | U | $10,000 | paid | GENERAL SUPPORT | 202403209349104375 |
| 2023 | Aclu New York, NY | U | $10,000 | paid | GENERAL SUPPORT | 202403209349104375 |
| 2023 | Aarp Long Beach, CA | U | $10,000 | paid | GENERAL SUPPORT | 202403209349104375 |
| 2023 | Children's Home Society of Virginia Richmond, VA | B | $10,000 | paid | GENERAL SUPPORT | 202403209349104375 |
| 2023 | Red Rover Sacramento, CA | U | $10,000 | paid | GENERAL SUPPORT | 202403209349104375 |
| 2023 | Pogo Washington, DC | U | $10,000 | paid | GENERAL SUPPORT | 202403209349104375 |
| 2023 | Raices San Antonio, TX | C | $10,000 | paid | GENERAL SUPPORT | 202403209349104375 |
| 2023 | World Conservation Society Bronx, NY | D | $10,000 | paid | GENERAL SUPPORT | 202403209349104375 |
| 2023 | The Chehalis Foundation Chehalis, WA | B | $10,000 | paid | GENERAL SUPPORT | 202403209349104375 |
| 2023 | Aarp Foundation Washington, DC | C | $10,000 | paid | GENERAL SUPPORT | 202403209349104375 |
| 2023 | Unicef New York, NY | U | $10,000 | paid | GENERAL SUPPORT | 202403209349104375 |
| 2023 | Discover Children's Museum Chehalis, WA | B | $5,000 | paid | GENERAL SUPPORT | 202403209349104375 |
| 2023 | Committee to Protect Journalists New York, NY | C | $2,000 | paid | GENERAL SUPPORT | 202403209349104375 |
| 2023 | Wamu Washington, DC | U | $1,500 | paid | GENERAL SUPPORT | 202403209349104375 |
| 2022 | Howard University Washington, DC | U | $250,892 | paid | GENERAL SUPPORT | 202333129349101238 |
| 2022 | Naral Pro-Choice America Foundation Alexandria, VA | U | $175,000 | paid | GENERAL SUPPORT | 202333129349101238 |
| 2022 | Piedmont Environmental Council Warrenton, VA | C | $160,000 | paid | GENERAL SUPPORT | 202333129349101238 |
| 2022 | Georgetown University Law Center Washington, DC | U | $150,000 | paid | GENERAL SUPPORT | 202333129349101238 |
| 2022 | Ayuda Inc Washington, DC | C | $125,000 | paid | GENERAL SUPPORT | 202333129349101238 |
| 2022 | The Fauquier Free Clinic Warrenton, VA | B | $100,000 | paid | GENERAL SUPPORT | 202333129349101238 |
| 2022 | Campaign Legal Center Washington, DC | B | $100,000 | paid | GENERAL SUPPORT | 202333129349101238 |
| 2022 | Well Done Foundation Shelby, MT | C | $100,000 | paid | GENERAL SUPPORT | 202333129349101238 |
| 2022 | Stanford Law School Stanford, CA | D | $100,000 | paid | GENERAL SUPPORT | 202333129349101238 |
| 2022 | American Nutrition Association Chicago, IL | C | $100,000 | paid | GENERAL SUPPORT | 202333129349101238 |
| 2022 | Loudoun County Free Clinic Leesburg, VA | D | $100,000 | paid | GENERAL SUPPORT | 202333129349101238 |
| 2022 | World Central Kitchen Washington, DC | C | $75,000 | paid | GENERAL SUPPORT | 202333129349101238 |
| 2022 | Glacier National Park Conservancy Columbia Falls, MT | B | $50,000 | paid | GENERAL SUPPORT | 202333129349101238 |
| 2022 | Virginia Public Access Project Richmond, VA | B | $50,000 | paid | GENERAL SUPPORT | 202333129349101238 |
| 2022 | Fenwick Foundation Arlington, VA | B | $50,000 | paid | GENERAL SUPPORT | 202333129349101238 |
| 2021 | Center for Innovation Linthicum, MD | B | $300,000 | paid | GENERAL SUPPORT | 202211319349101021 |
| 2021 | Howard University Washington, DC | U | $190,924 | paid | GENERAL SUPPORT | 202211319349101021 |
| 2021 | Georgetown University Law Center Washington, DC | U | $150,000 | paid | GENERAL SUPPORT | 202211319349101021 |
| 2021 | Ayuda Inc Washington, DC | C | $125,000 | paid | GENERAL SUPPORT | 202211319349101021 |
| 2021 | Naral Pro-Choice America Foundation Alexandria, VA | U | $125,000 | paid | GENERAL SUPPORT | 202211319349101021 |
| 2021 | Piedmont Environmental Council Warrenton, VA | C | $125,000 | paid | GENERAL SUPPORT | 202211319349101021 |
| 2021 | Well Done Foundation Shelby, MT | C | $105,840 | paid | GENERAL SUPPORT | 202211319349101021 |
| 2021 | The Fauquier Free Clinic Warrenton, VA | B | $100,000 | paid | GENERAL SUPPORT | 202211319349101021 |
| 2021 | Stanford Law School Stanford, CA | D | $100,000 | paid | GENERAL SUPPORT | 202211319349101021 |
| 2021 | Campaign Legal Center Washington, DC | B | $100,000 | paid | GENERAL SUPPORT | 202211319349101021 |
| 2021 | Loudoun County Free Clinic Leesburg, VA | D | $100,000 | paid | GENERAL SUPPORT | 202211319349101021 |
| 2021 | World Central Kitchen Washington, DC | C | $75,000 | paid | GENERAL SUPPORT | 202211319349101021 |
| 2021 | Fenwick Foundation Arlington, VA | B | $50,000 | paid | GENERAL SUPPORT | 202211319349101021 |
| 2021 | Virginia Public Access Project Richmond, VA | B | $50,000 | paid | GENERAL SUPPORT | 202211319349101021 |
| 2021 | Glacier National Park Conservancy Columbia Falls, MT | B | $50,000 | paid | GENERAL SUPPORT | 202211319349101021 |
| 2020 | The Greenhouse Project Linthicum, MD | U | $400,000 | paid | FLAGSHIP GREENHOUSE MODEL | 202140689349100314 |
| 2020 | Ayuda Inc Washington, DC | C | $225,000 | paid | VIRGINIA OPERATIONS AND PRO-BONO PROJECT | 202140689349100314 |
| 2020 | Georgetown University Law Center Washington, DC | U | $150,000 | paid | LAW STUDENT INVOLVEMENT | 202140689349100314 |
| 2020 | Naral Pro-Choice America Foundation Alexandria, VA | U | $125,000 | paid | COMMUNICATIONS CAPACITY BUILDING, RICHMOND ACTIVITIES AND PROGRAM FOR DISADVANTAGED | 202140689349100314 |
| 2020 | The Fauquier Free Clinic Warrenton, VA | B | $100,000 | paid | DENTAL AND MENTAL HEALTH PROGRAMS | 202140689349100314 |
| 2020 | Loudoun County Free Clinic Leesburg, VA | D | $100,000 | paid | DIABETES PROGRAM | 202140689349100314 |
| 2020 | World Central Kitchen Washington, DC | C | $75,000 | paid | TO HIRE A FUNDRAISER | 202140689349100314 |
| 2020 | Piedmont Environmental Council Warrenton, VA | C | $62,500 | paid | FOOD SECURITY PROGRAM | 202140689349100314 |
| 2020 | Glacier National Park Conservancy Columbia Falls, MT | B | $50,000 | paid | GLACIER YOUTH CORPS PROGRAM | 202140689349100314 |
| 2020 | Virginia Public Access Project Richmond, VA | B | $50,000 | paid | PREPARE FOR THE 2020 ELECTION | 202140689349100314 |
| 2019 | Ayuda Inc Washington, DC | C | $175,000 | paid | GENERAL SUPPORT | 202040669349101259 |
| 2019 | Georgetown University Law Center Washington, DC | U | $150,000 | paid | GENERAL SUPPORT | 202040669349101259 |
| 2019 | Piedmont Environmental Council Warrenton, VA | C | $120,000 | paid | GENERAL SUPPORT | 202040669349101259 |
| 2019 | Stanford University Stanford, CA | C | $100,000 | paid | GENERAL SUPPORT | 202040669349101259 |
| 2019 | The Fauquier Free Clinic Warrenton, VA | C | $100,000 | paid | GENERAL SUPPORT | 202040669349101259 |
| 2019 | Loudoun County Free Clinic Leesburg, VA | D | $100,000 | paid | GENERAL SUPPORT | 202040669349101259 |
| 2019 | Naral Pro-Choice America Foundation Alexandria, VA | U | $100,000 | paid | GENERAL SUPPORT | 202040669349101259 |
| 2019 | Center for Innovation Linthicum, MD | B | $100,000 | paid | GENERAL SUPPORT | 202040669349101259 |
| 2019 | Virginia Public Access Project Richmond, VA | B | $50,000 | paid | GENERAL SUPPPORT | 202040669349101259 |
| 2019 | Glacier National Park Conservancy Columbia Falls, MT | B | $50,000 | paid | GENERAL SUPPORT | 202040669349101259 |
| 2018 | Ayuda Inc Washington, DC | C | $175,000 | paid | FUNDS FOR REVIVING AYUDA'S PRO BONO PROGRAM | 201940589349100759 |
| 2018 | Georgetown University Law Center Washington, DC | U | $150,000 | paid | ICAP PROGRAM | 201940589349100759 |
| 2018 | Piedmont Environmental Council Warrenton, VA | C | $120,000 | paid | SUPPORT THE MINORITY OUTREACH PROGRAM | 201940589349100759 |
| 2018 | The Greenhouse Project Linthicum, MD | U | $100,000 | paid | THE BEST LIFE MEMORY PROGRAM | 201940589349100759 |
| 2018 | Stanford University Stanford, CA | C | $100,000 | paid | SUPPORT THE DESIGN SCHOOL AND ITS DESIGN TEACHING EFFORTS AND PROGRAMS | 201940589349100759 |
| 2018 | Naral Pro-Choice America Foundation Alexandria, VA | U | $100,000 | paid | GENERAL SUPPORT FOR RICHMOND OFFICE AND DISADVANTAGED YOUTH | 201940589349100759 |
| 2018 | The Fauquier Free Clinic Warrenton, VA | C | $100,000 | paid | FUNDS FOR DENTAL PROGRAM AND MENTAL HEALTH | 201940589349100759 |
| 2018 | Loudoun County Free Clinic Leesburg, VA | D | $100,000 | paid | DIABETES PROGRAM | 201940589349100759 |
| 2018 | World Central Kitchen Washington, DC | C | $50,000 | paid | GENERAL SUPPORT | 201940589349100759 |
| 2018 | Virginia Public Access Project Richmond, VA | B | $50,000 | paid | GENERAL SUPPPORT | 201940589349100759 |
| 2018 | Glacier National Park Conservancy Columbia Falls, MT | B | $50,000 | paid | GLACIER YOUTH PROGRAM | 201940589349100759 |
Match tier: A Reported EIN · B Exact name and place · C Strong name match · D Probable name match · U Unresolved. Tiers C and D are inferred, not reported; see how matching works.
Recipient matching for this dataset version has not yet completed its independent precision check. Tier A rows carry the EIN the filer reported; tiers B–D are the matcher's inference and should be read as leads until the check is published on the methodology page.
Source filings
Every figure above is traceable to one of these IRS e-file returns by its OBJECT_ID.
| Form | Tax year | Period end | Filed | Schema | IRS OBJECT_ID |
|---|---|---|---|---|---|
| 990PF | 2024 | 2024-12-31 | not stated | 2024v5.2 | 202513219349102401 |
| 990PF | 2023 | 2023-12-31 | not stated | 2023v5.1 | 202403209349104375 |
| 990PF | 2022 | 2022-12-31 | not stated | 2022v5.0 | 202333129349101238 |
| 990PF | 2021 | 2021-12-31 | not stated | 2021v4.1 | 202211319349101021 |
| 990PF | 2020 | 2020-12-31 | not stated | 2020v4.0 | 202140689349100314 |
| 990PF | 2019 | 2019-12-31 | not stated | 2019v5.0 | 202040669349101259 |
| 990PF | 2018 | 2018-12-31 | not stated | 2018v3.1 | 201940589349100759 |
Derived from IRS Form 990-PF e-file XML; recipient identities from the IRS Exempt Organizations Business Master File. Dataset version 2026.09.0, built 2026-09-03. The same rows as Parquet: manifest; as JSON: /api/funders/522285383.json.
The same organization elsewhere in the program: exempt status and filing health · federal awards · grant guidance · open opportunities.
This is informational only, derived from public data on the dates shown. It is not an eligibility determination, and not legal, tax, or accounting advice. Verify against the official source before relying on it.