Funders › CT › Halvorsen Family Foundation C/O Ole Andreas Halvorsen Trustee › 2025
Grants paid by Halvorsen Family Foundation C/O Ole Andreas Halvorsen Trustee, tax year 2025
EIN 06-1603158 · Stamford, CT · Form 990-PF, Part XV · NTEE T90
In tax year 2025, Halvorsen Family Foundation C/O Ole Andreas Halvorsen Trustee (EIN 06-1603158) reported 33 grants paid totaling $34,502,270. Dataset version 2026.09.0, built 2026-09-03.
Every grant, 2025
| Tax year | Recipient | Match | Amount | Type | Purpose | Source filing |
|---|---|---|---|---|---|---|
| 2025 | Stanford Medical Development Redwood City, CA | U | $20,000,000 | paid | EDUCATIONAL SUPPORT | 202620999349100827 |
| 2025 | Sterling and Francine Clark Art Institute Williamstown, MA | C | $5,125,000 | paid | ARTISTIC INITIATIVES | 202620999349100827 |
| 2025 | Memorial Sloan Kettering Cancer Center West Harrison, NY | U | $5,000,000 | paid | MEDICAL SUPPORT | 202620999349100827 |
| 2025 | Green Mountain Valley School Waitsfield, VT | B | $1,500,000 | paid | EDUCATIONAL SUPPORT | 202620999349100827 |
| 2025 | Weill Cornell Medicine New York, NY | U | $1,000,000 | paid | MEDICAL SUPPORT | 202620999349100827 |
| 2025 | US Ski & Snowboard Park City, UT | U | $500,000 | paid | ATHLETIC OPPORTUNITIES | 202620999349100827 |
| 2025 | Wildlife Conservation Society Bronx, NY | B | $350,000 | paid | WILDLIFE CONSERVATION | 202620999349100827 |
| 2025 | The Rockefeller University New York, NY | B | $275,000 | paid | EDUCATIONAL SUPPORT | 202620999349100827 |
| 2025 | Williams College Williamstown, MA | B | $200,000 | paid | EDUCATIONAL SUPPORT | 202620999349100827 |
| 2025 | Stanford University Stanford, CA | C | $100,000 | paid | EDUCATIONAL SUPPORT | 202620999349100827 |
| 2025 | Teachers College Columbia University New York, NY | B | $100,000 | paid | EDUCATIONAL SUPPORT | 202620999349100827 |
| 2025 | The Hospital for Special Surgery Fund Inc New York, NY | B | $50,000 | paid | MEDICAL SUPPORT | 202620999349100827 |
| 2025 | New England Nordic Ski Association New Gloucester, ME | D | $50,000 | paid | ATHLETIC OPPORTUNITIES | 202620999349100827 |
| 2025 | The Museum of Modern Art New York, NY | B | $50,000 | paid | ARTISTIC INITIATIVES | 202620999349100827 |
| 2025 | Norwegian-America Association Oslo | U | $26,464 | paid | GENERAL SUPPORT | 202620999349100827 |
| 2025 | National Audubon Society Connecticut Fairfield, CT | U | $25,000 | paid | ENVIRONMENTAL SUPPORT | 202620999349100827 |
| 2025 | Darien Police Association Darien, CT | B | $20,000 | paid | COMMUNITY SUPPORT | 202620999349100827 |
| 2025 | Stowe Volunteer Firefighters Inc Stowe, VT | B | $15,000 | paid | GENERAL SUPPORT | 202620999349100827 |
| 2025 | The Maritime Aquarium at Norwalk Norwalk, CT | B | $15,000 | paid | EDUCATIONAL SUPPORT | 202620999349100827 |
| 2025 | Darien Library Inc Darien, CT | B | $10,000 | paid | LIBRARY SUPPORT | 202620999349100827 |
| 2025 | National Nordic Foundation Saint Paul, MN | B | $10,000 | paid | ATHLETIC OPPORTUNITIES | 202620999349100827 |
| 2025 | Stowe Land Trust Stowe, VT | B | $10,000 | paid | ENVIRONMENTAL SUPPORT | 202620999349100827 |
| 2025 | Teach for America New York, NY | B | $10,000 | paid | EDUCATIONAL SUPPORT | 202620999349100827 |
| 2025 | Stowe Rescue Squad Inc Stowe, VT | B | $10,000 | paid | MEDICAL SUPPORT | 202620999349100827 |
| 2025 | Westport River Watershed Alliance Westport, MA | B | $10,000 | paid | ENVIRONMENTAL INITIATIVES | 202620999349100827 |
| 2025 | Darien Community Association Darien, CT | B | $10,000 | paid | COMMUNITY SUPPORT | 202620999349100827 |
| 2025 | Darien Emergency Medical Services - Post 53 Darien, CT | U | $10,000 | paid | MEDICAL SUPPORT | 202620999349100827 |
| 2025 | Aktiv Mot Kreft Oslo | U | $9,806 | paid | MEDICAL SUPPORT | 202620999349100827 |
| 2025 | Darien Nature Center Darien, CT | B | $5,000 | paid | ENVIRONMENTAL SUPPORT | 202620999349100827 |
| 2025 | Stowe Swimmers Foundation Stowe, VT | C | $2,000 | paid | ATHLETIC OPPORTUNITIES | 202620999349100827 |
| 2025 | Catamount Trail Association Burlington, VT | B | $2,000 | paid | ATHLETIC OPPORTUNITIES | 202620999349100827 |
| 2025 | The Friends of Stowe Library Stowe, VT | U | $1,000 | paid | EDUCATIONAL SUPPORT | 202620999349100827 |
| 2025 | Autism Services & Resources Connecticut Wallingford, CT | U | $1,000 | paid | MEDICAL SUPPORT | 202620999349100827 |
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.
Derived from IRS Form 990-PF e-file XML. Dataset version 2026.09.0, built 2026-09-03. All years for this funder.
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.