The Stuart Family Foundation makes very large, concentrated gifts to a single national medical institution, indicating a strong focus on supporting major cancer research and treatment. All documented giving goes to Memorial Sloan Kettering Cancer Center as general/unrestricted support, suggesting the foundation prefers to back established, high-capacity health organizations rather than many smaller local programs.
Highly concentrated: very large gifts to a single grantee (repeat funding), limited number of grants, general-purpose funding rather than project-specific awards.
The Stuart Family Foundation Inc’s largest documented gift is a $4,455,546 grant to Memorial Sloan Kettering Cancer Center in 2025, and that scale sets the tone for the foundation’s record of concentrated, institution-level giving. Across the recent grants list, the foundation repeatedly supports a small set of established organizations rather than spreading funds widely across many recipients. Memorial Sloan Kettering appears again with another $2,000,000 grant in 2024, plus additional support of $100,111, $50,000, and $50,000 in later entries, all labeled for general charitable purposes. That pattern points to a funder that backs major nonprofit institutions through unrestricted support. Beyond cancer care, the foundation’s giving reaches a handful of colleges, independent schools, and nonprofit organizations. Trustees of Dartmouth College receives multiple grants, including $200,398, $150,000, and $40,000, while Jesuit High School in New Orleans and Waterside School in Stamford each appear more than once. Smaller gifts also go to organizations such as National Casa Association, Environmental Defense Fund, Teach for America, and Focus on Tanzanian Communities Inc. The overall picture is of a family foundation that combines very large anchor gifts with repeated support for selected educational, civic, and human-services nonprofits.
Cancer research and treatment anchor the foundation’s giving. Memorial Sloan Kettering Cancer Center receives the largest documented grant, $4,455,546 in 2025, along with prior and later gifts of $2,000,000, $100,111, $50,000, and $50,000. Education is another visible thread. Trustees of Dartmouth College receives $200,398 in 2025, $150,000 in 2024, and $40,000 in 2025, while Jesuit High School in New Orleans is listed with $200,096 in 2023, $200,000 in 2024, and $200,000 in 2025. Independent schools also appear in Connecticut, including Waterside School, Greenwich Academy, Wick Annual Fund Brunswick School, and Greenwich Country Day School. The foundation also makes smaller grants in human services and civic work. National Casa Association receives $100,000 in 2025, and National CASAGAL Association for Children receives $100,000 in 2024 and $100,000 in 2023. Additional grants go to Environmental Defense Fund, Teach for America, and Focus on Tanzanian Communities Inc.
$9.2M
$116K
$8.3M
$9.2M
Most grants fall between $3K and $100K, with a median of $5K.
25th Percentile
$3K
Median
$5K
75th Percentile
$100K
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Notable grantees: Memorial Sloan Kettering Cancer Center
The grant-size profile is polarized: p25 is $2,500, median is $5,000, and p75 is $100,000, even though the annual giving total is driven by a few very large awards. Repeated recipients are common in the data, especially Memorial Sloan Kettering Cancer Center, Trustees of Dartmouth College, Jesuit High School, and Waterside School, which each appear across multiple years. The foundation is a family foundation with no individual grants and no program-related investments recorded. The recent grants are all described as general charitable purposes, indicating broad unrestricted support rather than project-specific awards.
Grant recipients are all in the United States. New York, NY appears often, led by Memorial Sloan Kettering Cancer Center and also including Trustees of Columbia University, Environmental Defense Fund, and Teach for America. Connecticut is another frequent destination, with Stamford, Greenwich, and Warren all represented. Outside the Northeast, the list includes New Orleans, LA; Hanover, NH; Atlanta, GA; Washington, DC; Tulsa, OK; and Watertown, MA. The top state by grant count is Connecticut, while 33% of grants go to recipients in New York.
The recent grants list is dominated by general charitable support for established institutions: Memorial Sloan Kettering Cancer Center, Trustees of Dartmouth College, Jesuit High School, Waterside School, and several other schools and nonprofit organizations. The listed purposes are consistently labeled general charitable purposes.
The distribution is small at the low end and very large at the high end. The 25th percentile grant is $2,500, the median is $5,000, and the 75th percentile is $100,000.
Yes. Memorial Sloan Kettering Cancer Center appears multiple times, including grants of $4,455,546 in 2025 and $2,000,000 in 2024. Trustees of Dartmouth College, Jesuit High School, and Waterside School also recur across multiple years.
Grants are U.S.-only in the data, with Connecticut as the top state by grant count. New York accounts for 33% of grants, and recipient cities include New York, Stamford, Greenwich, Hanover, New Orleans, Atlanta, Washington, Tulsa, and Watertown.
The recent grants are labeled general charitable purposes, and the summary describes Memorial Sloan Kettering support as general or unrestricted. That points to a pattern of broad, non-program-specific funding.
2026
Source: IRS Form 990-PF, fiscal year 2026.
Most recent grants reported to the IRS.
| Recipient | Location | Amount | Year | Purpose |
|---|---|---|---|---|
| Memorial Sloan Kettering Cancer Center | New York, NY | $6,988,432 | 2026 | GENERAL CHARITABLE PURPOSES |
| Trustees of Dartmouth College | HANOVER, NH | $244,466 | 2026 | GENERAL CHARITABLE PURPOSES |
| Waterside School Inc | STAMFORD, CT | $151,910 | 2026 | GENERAL CHARITABLE PURPOSES |
| Memorial Sloan Kettering Cancer Center | New York, NY | $4,455,546 | 2025 | GENERAL CHARITABLE PURPOSES |
| Trustees of Dartmouth College | HANOVER, NH | $200,398 | 2025 | GENERAL CHARITABLE PURPOSES |
| Jesuit High School | New Orleans, LA | $200,000 | 2025 | GENERAL CHARITABLE PURPOSES |
| Waterside School | Stamford, CT | $150,116 | 2025 | general charitable purposes |
| National Casa Association | Atlanta, GA | $100,000 | 2025 | GENERAL CHARITABLE PURPOSES |
| American Independent Foundation | Washington, DC | $75,000 | 2025 | GENERAL CHARITABLE PURPOSES |
| Memorial Sloan Kettering Cancer Center | New York, NY | $50,000 | 2025 | GENERAL CHARITABLE PURPOSES |
| Trustees of Dartmouth College | Hanover, NH | $40,000 | 2025 | GENERAL CHARITABLE PURPOSES |
| Janada L Batchelor Foundation for Children | Tulsa, OK | $10,000 | 2025 | GENERAL CHARITABLE PURPOSES |
| Focus on Tanzanian Communities Inc | WATERTOWN, MA | $10,000 | 2025 | GENERAL CHARITABLE PURPOSES |
| New York Public Radio | New york, NY | $5,000 | 2025 | GENERAL CHARITABLE PURPOSES |
| Sankaty Head Foundation Inc - Caddie Camp | Siasconset, MA | $5,000 | 2025 | GENERAL CHARITABLE PURPOSES |
| Stepping Stones Foundation | Bedford Hills, NY | $4,000 | 2025 | GENERAL CHARITABLE PURPOSES |
| New Alternatives for Children Inc | New York, NY | $2,500 | 2025 | GENERAL CHARITABLE PURPOSES |
| Steep Rock Association Inc | WASHINGTON DT, CT | $1,000 | 2025 | GENERAL CHARITABLE PURPOSES |
| Hospital for Special Surgery Fund Inc | New York, NY | $1,000 | 2025 | GENERAL CHARITABLE PURPOSES |
| The Good Shepherd School | New Orleans, LA | $500 | 2025 | GENERAL CHARITABLE PURPOSES |
| Harvard Medical School | boston, MA | $500 | 2025 | GENERAL CHARITABLE PURPOSES |
| Memorial Sloan Kettering Cancer Center | new york, NY | $2,000,000 | 2024 | GENERAL CHARITABLE PURPOSES |
| Jesuit High School | New Orleans, LA | $200,000 | 2024 | GENERAL CHARITABLE PURPOSES |
| Trustees of Dartmouth College | Hanover, NH | $150,000 | 2024 | GENERAL CHARITABLE PURPOSES |
| Waterside School | stamford, CT | $150,000 | 2024 | GENERAL CHARITABLE PURPOSES |
| Memorial Sloan Kettering Cancer Center | New York, NY | $100,111 | 2024 | GENERAL CHARITABLE PURPOSES |
| National CASAGAL Association for Children | Seatle, WA | $100,000 | 2024 | GENERAL CHARITABLE PURPOSES |
| Lake Waramaug Task Force Inc | Warren, CT | $10,500 | 2024 | GENERAL CHARITABLE PURPOSES |
| Teach for America | New York, NY | $10,000 | 2024 | GENERAL CHARITABLE PURPOSES |
| Boys and Girls Club of Greenwich | Greenwich, CT | $5,000 | 2024 | GENERAL CHARITABLE PURPOSES |
| Main Springs | Tulsa, OK | $5,000 | 2024 | GENERAL CHARITABLE PURPOSES |
| Sankaty Head Foundation Inc - Caddie Camp | Siasconset, MA | $5,000 | 2024 | GENERAL CHARITABLE PURPOSES |
| Greenwich Country Day School | Greenwich, CT | $5,000 | 2024 | GENERAL CHARITABLE PURPOSES |
| Greenwich Acadmey | Greenwich, CT | $5,000 | 2024 | GENERAL CHARITABLE PURPOSES |
| Wick Annual Fund Brunswick school | Greenwich, CT | $5,000 | 2024 | GENERAL CHARITABLE PURPOSES |
| Stepping Stones Foundation | Bedford Hills, NY | $2,500 | 2024 | GENERAL CHARITABLE PURPOSES |
| Jewish Board of Family & Children Services Inc | New York, NY | $2,500 | 2024 | GENERAL CHARITABLE PURPOSES |
| COMMUNITY FOUNDATION FOR NANTUCKET | NANTUCKET, MA | $1,000 | 2024 | GENERAL CHARITABLE PURPOSES |
| Harvard Medical School | boston, MA | $1,000 | 2024 | GENERAL CHARITABLE PURPOSES |
| Wholeschool Mindfulnesss | Wrentham, MA | $500 | 2024 | GENERAL CHARITABLE PURPOSES |
| Jesuit High School | New Orleans, LA | $200,096 | 2023 | GENERAL CHARITABLE PURPOSES |
| Waterside School | stamford, CT | $150,000 | 2023 | GENERAL CHARITABLE PURPOSES |
| National CASAGAL Association for Children | Seatle, WA | $100,000 | 2023 | GENERAL CHARITABLE PURPOSES |
| Memorial Sloan Kettering Cancer Center | new york, NY | $50,000 | 2023 | GENERAL CHARITABLE PURPOSES |
| Trustees of Columbia University | New York, NY | $25,000 | 2023 | GENERAL CHARITABLE PURPOSES |
| Lake Waramaug Task Force Inc | Warren, CT | $10,500 | 2023 | GENERAL CHARITABLE PURPOSES |
| Environmental Defense Fund | new york, NY | $10,000 | 2023 | GENERAL CHARITABLE PURPOSES |
| Focus on Tanzanian Communities Inc | Watertown, MA | $5,000 | 2023 | GENERAL CHARITABLE PURPOSES |
| Sankaty Head Foundation Inc - Caddie Camp | Siasconset, MA | $5,000 | 2023 | GENERAL CHARITABLE PURPOSES |
| US Ski & Snowboard Team Foundation | park city, UT | $5,000 | 2023 | GENERAL CHARITABLE PURPOSES |
Memorial Sloan Kettering Cancer Center
$6,988,432GENERAL CHARITABLE PURPOSES
Trustees of Dartmouth College
$244,466GENERAL CHARITABLE PURPOSES
Memorial Sloan Kettering Cancer Center
$4,455,546GENERAL CHARITABLE PURPOSES
Trustees of Dartmouth College
$200,398GENERAL CHARITABLE PURPOSES
Jesuit High School
$200,000GENERAL CHARITABLE PURPOSES
National Casa Association
$100,000GENERAL CHARITABLE PURPOSES
Memorial Sloan Kettering Cancer Center
$50,000GENERAL CHARITABLE PURPOSES
Trustees of Dartmouth College
$40,000GENERAL CHARITABLE PURPOSES
Janada L Batchelor Foundation for Children
$10,000GENERAL CHARITABLE PURPOSES
Focus on Tanzanian Communities Inc
$10,000GENERAL CHARITABLE PURPOSES
New York Public Radio
$5,000GENERAL CHARITABLE PURPOSES
Sankaty Head Foundation Inc - Caddie Camp
$5,000GENERAL CHARITABLE PURPOSES
Stepping Stones Foundation
$4,000GENERAL CHARITABLE PURPOSES
Steep Rock Association Inc
$1,000GENERAL CHARITABLE PURPOSES
Hospital for Special Surgery Fund Inc
$1,000GENERAL CHARITABLE PURPOSES
The Good Shepherd School
$500GENERAL CHARITABLE PURPOSES
Harvard Medical School
$500GENERAL CHARITABLE PURPOSES
Memorial Sloan Kettering Cancer Center
$2,000,000GENERAL CHARITABLE PURPOSES
Jesuit High School
$200,000GENERAL CHARITABLE PURPOSES
Trustees of Dartmouth College
$150,000GENERAL CHARITABLE PURPOSES
Memorial Sloan Kettering Cancer Center
$100,111GENERAL CHARITABLE PURPOSES
Lake Waramaug Task Force Inc
$10,500GENERAL CHARITABLE PURPOSES
Main Springs
$5,000GENERAL CHARITABLE PURPOSES
Sankaty Head Foundation Inc - Caddie Camp
$5,000GENERAL CHARITABLE PURPOSES
Greenwich Country Day School
$5,000GENERAL CHARITABLE PURPOSES
Greenwich Acadmey
$5,000GENERAL CHARITABLE PURPOSES
Wick Annual Fund Brunswick school
$5,000GENERAL CHARITABLE PURPOSES
Stepping Stones Foundation
$2,500GENERAL CHARITABLE PURPOSES
Jewish Board of Family & Children Services Inc
$2,500GENERAL CHARITABLE PURPOSES
Harvard Medical School
$1,000GENERAL CHARITABLE PURPOSES
Wholeschool Mindfulnesss
$500GENERAL CHARITABLE PURPOSES
Jesuit High School
$200,096GENERAL CHARITABLE PURPOSES
National CASAGAL Association for Children
$100,000GENERAL CHARITABLE PURPOSES
Memorial Sloan Kettering Cancer Center
$50,000GENERAL CHARITABLE PURPOSES
Trustees of Columbia University
$25,000GENERAL CHARITABLE PURPOSES
Lake Waramaug Task Force Inc
$10,500GENERAL CHARITABLE PURPOSES
Focus on Tanzanian Communities Inc
$5,000GENERAL CHARITABLE PURPOSES
Sankaty Head Foundation Inc - Caddie Camp
$5,000GENERAL CHARITABLE PURPOSES