The Winterburn Foundation
The Winterburn Foundation is a private foundation focused on Education, based in New York, NY. IRS filing data is available from 2020 through 2025. As of 2025, the organization holds $3.1M in total assets. In 2025, it awarded 1 grant totaling $500K. Net investment income was $119K.
The Winterburn Foundation at a glance
In short: The Winterburn Foundation gave $500K across 1 grant in 2025 (avg $500K), mostly in New York. Source: 2025 IRS Form 990-PF.
- Annual giving (2025)
- $500,000
- Grants made (2025)
- 1
- Average grant
- $500,000
- Median grant
- $500,000
- Total assets
- $3,051,771
- -7.6% vs 2024
- Primary geography
- New York (100% of itemized 2025 grant dollars)
- Latest 990 filing
- Form 990-PF, 2025 View filing
Data from IRS Form 990-PF, 2025; updated September 2026.
Who The Winterburn Foundation funds
How this funder distributes its grants
Top Recipients
Top recipient in 2025
The largest 2025 recipient was International Rescue Committee ($500K).
Grant Size Distribution
18 grants across all recorded years
The most common grant size was under $50K: 11 grants of 18 (61%).
Geographic Focus
Where this funder awards grants
Grant Distribution by State
Share of the 2025 grant dollars on its one itemized grant.
States
Cities
How The Winterburn Foundation gives
- Giving held roughly steady from 2022 to 2025 (+11%). Method
- In 2025 it paid out 346% of its IRS minimum distribution (the 5% rule). Method
From the foundation's IRS Form 990-PF filings. Methodology.
Giving History
Giving Over Time
Total grant dollars and number of grants per year
From 2020 to 2025, annual grant giving ranged from $325K (2020) to $500K (2025). In 2025 it made 1 grant totaling $500K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| International Rescue Committee New York, NY | Providing healthcare and clean water, protective services for women and children, education, and economic support | $500,000 |
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Financial History
Multi-year comparison from IRS filings
| Filing year | Total Assets | Revenue | Expenses | Grants paid | Grants | Qualifying Distributions | Net Investment Income | Distributable Amount |
|---|---|---|---|---|---|---|---|---|
| 2025 | $3,051,771 | $330,026 | $527,484 | $500,000 | 1 | $501,000 | $118,601 | $144,765 |
| 2024 | $3,301,262 | $94,921 | $25,911 | — | — | $950 | $99,448 | $149,699 |
| 2023 | $3,233,628 | $54,110 | $25,381 | — | — | $933 | $75,646 | $144,521 |
| 2022 | $3,279,772 | $-4,339 | $481,615 | $450,000 | 8 | $450,875 | $45,883 | $167,653 |
| 2021 | $3,691,234 | $160,221 | $375,180 | $340,000 | 9 | $340,833 | $127,155 | $201,904 |
| 2020 | $3,906,193 | $149,749 | $350,791 | $325,000 | 8 | — | $126,408 | $217,227 |
Under IRS private-foundation payout rules, The Winterburn Foundation reported a distributable amount of $145K for 2025 — the minimum it must pay out in qualifying distributions.
Leadership & Key People
Officers and directors from IRS filings
The Winterburn Foundation is led by Alexandra M. Rockefeller, President on every filing since 2020 — the only officer listed, and uncompensated.
Officers on the 2025 filing
Alexandra M. Rockefeller
President
On filings since 2020
0.3 hrs/week
No compensation reported
Data from IRS Form 990 filings, 2020–2025. "On filings since" is the earliest filing we hold that lists the person; hours are average hours per week as reported.
Frequently asked questions about The Winterburn Foundation
How much does The Winterburn Foundation give each year?
The Winterburn Foundation gave $500K across 1 grant in 2025, according to its 2025 IRS Form 990-PF.
How large is The Winterburn Foundation?
The Winterburn Foundation reported $3.1M in total assets on its 2025 IRS Form 990-PF. It paid out $501K in qualifying distributions that year, against a required minimum of $145K (roughly 5% of its investment assets).
What is The Winterburn Foundation?
The Winterburn Foundation is a private foundation focused on Education, based in New York, NY. It holds $3.1M in total assets as of 2025.
Where does The Winterburn Foundation operate?
The Winterburn Foundation has awarded grants in New York.
What is The Winterburn Foundation's EIN?
The Winterburn Foundation's EIN (Employer Identification Number) is 13-6943521. IRS Form 990 filing data is available on this page for 2020–2025.
Data last updated September 2026. Sourced from IRS Form 990-PF filings.
Data update history
(6)
When this profile's IRS filing data changed on Grantable
- Updated Form 990-PF for fiscal year 2020 (received by the IRS April 12, 2021)
- Updated Form 990-PF for fiscal year 2021 (received by the IRS May 6, 2022)
- Updated Form 990-PF for fiscal year 2022 (received by the IRS March 9, 2023)
- Updated Form 990-PF for fiscal year 2023 (received by the IRS May 7, 2024)
- Updated Form 990-PF for fiscal year 2024 (received by the IRS May 8, 2025)
- Added Form 990-PF for fiscal year 2025 (received by the IRS May 8, 2026)
Live grants for the work The Winterburn Foundation funds
Education Open opportunities, soonest deadline first.
- Creative Impact Grants $500 - $2,500 · Due October 19, 2026
- Community and School Grants $28,000 total pool; 10-15 grants expected · Due October 19, 2026
- Mary Pinola/Crescenta Valley Chamber Education Fund $500 - $5,000 for ongoing programs; up to $15,000 for Strategic Initiative Grants · Due October 19, 2026
Explore Open Grants
Browse active grant opportunities in The Winterburn Foundation's focus areas in our free grants database
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