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Form 990-PFTax year 2024EIN 06-1603158

Halvorsen Family Foundation

A private foundation in Stamford, CT. Its return for tax year 2024 lists 33 grants and $34.5 million paid in grants.

See which foundations fund work like yours Matching by cause, place and grant size

Tax year 2024 (period ending Nov 30, 2025), read from the IRS e-file on Nov 11, 2026. Returns reach the IRS 5 to 18 months after the year they describe.

How to apply

Preselected only

The return checks the box saying the foundation gives only to preselected organizations and does not accept unsolicited requests.

Assets and giving by year

8 returns on file
Grants paid by tax year. The latest year is in blue.

  • Tax year 2024

    $34,502,270

    Grants listed
    33
    Assets, end of year
    $365,424,634

  • Tax year 2023

    $20,884,778

    Grants listed
    18
    Assets, end of year
    $322,046,466

  • Tax year 2022

    $14,595,000

    Grants listed
    24
    Assets, end of year
    $265,562,093

  • Tax year 2021

    $13,306,826

    Grants listed
    28
    Assets, end of year
    $235,306,066

  • Tax year 2020

    $9,314,000

    Grants listed
    9
    Assets, end of year
    $301,427,167

  • Tax year 2019

    $7,115,124

    Grants listed
    7
    Assets, end of year
    $247,485,930

  • Tax year 2018

    $7,452,178

    Grants listed
    1
    Assets, end of year
    $184,722,221

  • Tax year 2017

    $440,200

    Grants listed
    1
    Assets, end of year
    $152,925,546

Grants paid in 2024

33 grants, largest first

As listed on the return.

  1. Stanford Medical DevelopmentRedwood City, CA

    Educational support

    $20,000,000
  2. Sterling and Francine Clark Art InstituteWilliamstown, MA

    Artistic initiatives

    $5,125,000
  3. Memorial Sloan Kettering Cancer CenterWest Harrison, NY

    Medical support

    $5,000,000
  4. Green Mountain Valley SchoolWaitsfield, VT

    Educational support

    $1,500,000
  5. Weill Cornell MedicineNew York, NY

    Medical support

    $1,000,000
  6. US Ski & SnowboardPark City, UT

    Athletic opportunities

    $500,000
  7. Wildlife Conservation SocietyBronx, NY

    Wildlife conservation

    $350,000
  8. The Rockefeller UniversityNew York, NY

    Educational support

    $275,000
  9. Williams CollegeWilliamstown, MA

    Educational support

    $200,000
  10. Stanford UniversityStanford, CA

    Educational support

    $100,000
  11. Teachers College Columbia UniversityNew York, NY

    Educational support

    $100,000
  12. New England Nordic Ski AssociationNew Gloucester, ME

    Athletic opportunities

    $50,000
  13. The Hospital for Special Surgery Fund IncNew York, NY

    Medical support

    $50,000
  14. The Museum of Modern ArtNew York, NY

    Artistic initiatives

    $50,000
  15. Norwegian-America AssociationOslo, Norway

    General support

    $26,464
  16. National Audubon Society ConnecticutFairfield, CT

    Environmental support

    $25,000
  17. Darien Police AssociationDarien, CT

    Community support

    $20,000
  18. The Maritime Aquarium at NorwalkSouth Norwalk, CT

    Educational support

    $15,000
  19. Stowe Volunteer Firefighters IncStowe, VT

    General support

    $15,000
  20. Stowe Land TrustStowe, VT

    Environmental support

    $10,000
  21. Darien Community AssociationDarien, CT

    Community support

    $10,000
  22. Darien Emergency Medical Services - Post 53Darien, CT

    Medical support

    $10,000
  23. Darien Library IncDarien, CT

    Library support

    $10,000
  24. National Nordic FoundationSaint Paul, MN

    Athletic opportunities

    $10,000
  25. Stowe Rescue Squad IncStowe, VT

    Medical support

    $10,000
  26. Teach for AmericaNew York, NY

    Educational support

    $10,000
  27. Westport River Watershed AllianceWestport, MA

    Environmental initiatives

    $10,000
  28. Aktiv Mot KreftOslo, Norway

    Medical support

    $9,806
  29. Darien Nature CenterDarien, CT

    Environmental support

    $5,000
  30. Catamount Trail AssociationBurlington, VT

    Athletic opportunities

    $2,000
  31. Stowe Swimmers FoundationStowe, VT

    Athletic opportunities

    $2,000
  32. The Friends of Stowe LibraryStowe, VT

    Educational support

    $1,000
  33. Autism Services & Resources ConnecticutWallingford, CT

    Medical support

    $1,000

Where the money goes

By cause: grants to organizations we matched to the IRS list of exempt organizations, by their category.

  1. Education7 grants $2,195,00081% of the total
  2. Animals1 grant $350,00013% of the total
  3. Arts and culture3 grants $80,0003% of the total
  4. Health1 grant $50,0002% of the total
  5. Environment3 grants $25,000<1% of the total
  6. Community development1 grant $10,000<1% of the total
  7. 2 other causes2 grants $12,000<1% of the total

By State

Grants to organizations with a US address, latest year.

  1. California2 grants $20,100,000
  2. New York8 grants $6,835,000
  3. Massachusetts3 grants $5,335,000
  4. Vermont7 grants $1,540,000
  5. Utah1 grant $500,000
  6. Connecticut8 grants $96,000
  7. Maine1 grant $50,000
  8. Minnesota1 grant $10,000

Officers, directors and trustees

2 people as filed

As filed on the return, with average hours per week and pay from the foundation.

  • Ole Andreas HalvorsenTRUSTEE Hours 0.3Pay $0
  • Diane K HalvorsenTRUSTEE Hours 0.3Pay $0

The return

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