Data / Foundation grants / Halvorsen Family Foundation
Halvorsen Family Foundation: 33 grants to organizations, $34.5 million (tax year ended November 2025)
Halvorsen Family Foundation, a private foundation in Stamford, CT, paid 33 grants to organizations totaling $34,502,270 in its tax year ended November 2025, according to its Form 990-PF filed with the IRS on April 9, 2026. The largest was $20,000,000 to Stanford Medical Development in Redwood City, CA for educational support.
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- EIN
- 061603158
- Based in
- Stamford, CT
- Assets
- $365,424,634
- Grants paid
- $34,502,270
- Tax year ended
- November 2025
Grants paid, tax year ended November 2025
From the Form 990-PF filed April 9, 2026, IRS object ID 202620999349100827. It reported $34,502,270 in grants paid; 33 grants to organizations are listed.
| Recipient | Location | Purpose | Cause | Amount | Source |
|---|---|---|---|---|---|
| Stanford Medical Development | Redwood City, CA | Educational support | $20,000,000 | apps.irs.gov | |
| Sterling and Francine Clark Art Institute | Williamstown, MA | Artistic initiatives | $5,125,000 | apps.irs.gov | |
| Memorial Sloan Kettering Cancer Center | West Harrison, NY | Medical support | $5,000,000 | apps.irs.gov | |
| Green Mountain Valley School | Waitsfield, VT | Educational support | Education | $1,500,000 | apps.irs.gov |
| Weill Cornell Medicine | New York, NY | Medical support | $1,000,000 | apps.irs.gov | |
| Us Ski & Snowboard | Park City, UT | Athletic opportunities | $500,000 | apps.irs.gov | |
| Wildlife Conservation Society | Bronx, NY | Wildlife conservation | Animal-related | $350,000 | apps.irs.gov |
| The Rockefeller University | New York, NY | Educational support | Education | $275,000 | apps.irs.gov |
| Williams College | Williamstown, MA | Educational support | Education | $200,000 | apps.irs.gov |
| Stanford University | Stanford, CA | Educational support | $100,000 | apps.irs.gov | |
| Teachers College Columbia University | New York, NY | Educational support | Education | $100,000 | apps.irs.gov |
| New England Nordic Ski Association | New Gloucester, ME | Athletic opportunities | $50,000 | apps.irs.gov | |
| The Hospital for Special Surgery Fund Inc | New York, NY | Medical support | Health care | $50,000 | apps.irs.gov |
| The Museum of Modern Art | New York, NY | Artistic initiatives | Arts, culture and humanities | $50,000 | apps.irs.gov |
| Norwegian-America Association | Oslo, NO | General support | $26,464 | apps.irs.gov | |
| National Audubon Society Connecticut | Fairfield, CT | Environmental support | $25,000 | apps.irs.gov | |
| Darien Police Association | Darien, CT | Community support | $20,000 | apps.irs.gov | |
| Stowe Volunteer Firefighters Inc | Stowe, VT | General support | Arts, culture and humanities | $15,000 | apps.irs.gov |
| The Maritime Aquarium at Norwalk | Norwalk, CT | Educational support | Arts, culture and humanities | $15,000 | apps.irs.gov |
| Darien Community Association | Darien, CT | Community support | Community improvement and capacity building | $10,000 | apps.irs.gov |
| Darien Emergency Medical Services - Post 53 | Darien, CT | Medical support | $10,000 | apps.irs.gov | |
| Darien Library Inc | Darien, CT | Library support | Education | $10,000 | apps.irs.gov |
| National Nordic Foundation | Saint Paul, MN | Athletic opportunities | Recreation and sports | $10,000 | apps.irs.gov |
| Stowe Land Trust | Stowe, VT | Environmental support | Environment | $10,000 | apps.irs.gov |
| Stowe Rescue Squad Inc | Stowe, VT | Medical support | $10,000 | apps.irs.gov | |
| Teach for America | New York, NY | Educational support | Education | $10,000 | apps.irs.gov |
| Westport River Watershed Alliance | Westport, MA | Environmental initiatives | Environment | $10,000 | apps.irs.gov |
| Aktiv Mot Kreft | Oslo, NO | Medical support | $9,806 | apps.irs.gov | |
| Darien Nature Center | Darien, CT | Environmental support | Environment | $5,000 | apps.irs.gov |
| Catamount Trail Association | Burlington, VT | Athletic opportunities | $2,000 | apps.irs.gov | |
| Stowe Swimmers Foundation | Stowe, VT | Athletic opportunities | Philanthropy, voluntarism and grantmaking foundations | $2,000 | apps.irs.gov |
| Autism Services & Resources Connecticut | Wallingford, CT | Medical support | $1,000 | apps.irs.gov | |
| The Friends of Stowe Library | Stowe, VT | Educational support | $1,000 | apps.irs.gov |
Grants paid, tax year ended November 2024
From the Form 990-PF filed September 4, 2025, IRS object ID 202542479349100329. It reported $20,884,778 in grants paid; 18 grants to organizations are listed.
| Recipient | Location | Purpose | Cause | Amount | Source |
|---|---|---|---|---|---|
| Stanford Medical Development | Redwood City, CA | Educational support | $20,000,000 | apps.irs.gov | |
| Williams College | Williamstown, MA | Educational support | Education | $350,000 | apps.irs.gov |
| Sterling and Francine Clark Art Institute | Williamstown, MA | Artistic initiatives | $100,000 | apps.irs.gov | |
| Wildlife Conservation Society | Bronx, NY | Wildlife conservation | Animal-related | $100,000 | apps.irs.gov |
| The Hospital for Special Surgery Fund Inc | New York, NY | Medical support | Health care | $60,000 | apps.irs.gov |
| Nensa | New Gloucester, ME | Athletic opportunities | $50,000 | apps.irs.gov | |
| The Museum of Modern Art | New York, NY | Artistic initiatives | Arts, culture and humanities | $50,000 | apps.irs.gov |
| The Rockefeller University | New York, NY | Educational support | Education | $50,000 | apps.irs.gov |
| Noram | Oslo, NO | General support | $30,000 | apps.irs.gov | |
| Greens Ledge Light Preservation | Rowayton, CT | Preservation support | $25,000 | apps.irs.gov | |
| Massachusetts Museum of Contemporary Art Foundation Inc | North Adams, MA | Artistic initiatives | Education | $25,000 | apps.irs.gov |
| Darien Police Association | Darien, CT | Community support | $20,000 | apps.irs.gov | |
| Stowe Land Trust | Stowe, VT | Environmental support | Environment | $10,000 | apps.irs.gov |
| Darien Nature Center | Darien, CT | Environmental support | Environment | $5,000 | apps.irs.gov |
| Aktiv Mot Kreft | Oslo, NO | Medical support | $4,778 | apps.irs.gov | |
| Catamount Trail Association | Burlington, VT | Athletic opportunities | $2,000 | apps.irs.gov | |
| Stowe Swimmers Foundation | Stowe, VT | Athletic opportunities | Philanthropy, voluntarism and grantmaking foundations | $2,000 | apps.irs.gov |
| The Friends of Stowe Library | Stowe, VT | Educational support | $1,000 | apps.irs.gov |
Causes funded
From grants whose recipient has a cause.
| Cause | Granted |
|---|---|
| Education | $2,520,000 |
| Animal-related | $450,000 |
| Arts, culture and humanities | $130,000 |
| Health care | $110,000 |
| Environment | $40,000 |
| Community improvement and capacity building | $10,000 |
| Recreation and sports | $10,000 |
| Philanthropy, voluntarism and grantmaking foundations | $4,000 |
States funded
| Recipient state | Granted |
|---|---|
| California | $40,100,000 |
| New York | $7,095,000 |
| Massachusetts | $5,810,000 |
| Vermont | $1,555,000 |
| Utah | $500,000 |
| Connecticut | $146,000 |
| Maine | $100,000 |
| Minnesota | $10,000 |
Also on SpecStream
- Who funds education in Vermont
- Who funds education in Massachusetts
- Who funds animal-related in New York
- Who funds education in New York
- Who funds health care in New York
- Who funds arts, culture and humanities in New York
Updated April 9, 2026. Read from IRS Form 990-PF e-file data. Public domain (U.S. government work). Grants are as each foundation reported them to the IRS on its Form 990-PF. Grants to individuals are left out. A grant has a cause only where the recipient's name and city match one organization in the IRS Business Master File, and the cause is that organization's NTEE major group. Free to reuse with credit to SpecStream under CC BY 4.0. Spot a wrong value? Write to [email protected] with the link to this page.