The Derfner Foundation
At a glance
This funder does not accept unsolicited applications. The foundation chooses the organisations it funds itself.
Key takeaways
- The Derfner Foundation makes unrestricted grants across a wide range of causes, including hospitals and medical research, elder care, schools, museums, Jewish communal organisations and social-service charities, so many kinds of nonprofit could in principle fit its interests.
- However, it only gives by invitation and does not accept unsolicited requests, so sending in a cold application is not the way to approach it.
- Giving appears strongly relationship-led: 99% of its grant dollars to organisations went to organisations it had already funded in its two prior filings, so it mainly continues existing relationships rather than taking on new ones through open applications.
- If a connection to the foundation does exist, a realistic request would be modest, since about 8 in 10 of its grants fall between $10,000 and $250,000 and the median grant is $30,000, though it has occasionally given as much as $1,500,000.
- No geographic focus is stated, though the filings show most grants reaching organisations in New York and California.
Overview
The Derfner Foundation is a US private foundation based in New York, NY.
What they fund
Profile based on the foundation's IRS Form 990-PF filings (TY2024, TY2023, TY2022) only: no website or other web source for the foundation was found. Every statement is checked against the filings. Sources read on 7 October 2026.
Priority Areas
The filings show the foundation making unrestricted grants to public charities in a wide range of fields. Recipients include hospitals and medical research organisations, elder-care providers, schools and educational organisations, museums, Jewish communal bodies, and social-service and humanitarian charities. The grants are recorded as unrestricted use rather than tied to named projects. Most recorded organisation-grant dollars went to New York recipients, with California the next largest state; grants also reached organisations elsewhere. Giving is limited to organisations preselected by the foundation, with unsolicited requests not accepted.
Geographic Focus
No geographic focus is stated; the filings show grants mainly in New York and California.
How to apply
The foundation states that it does not accept unsolicited requests.
Application success factors
- Repeat giving: In its TY2024 filing, 99% of its grant dollars to organisations went to organisations it had also funded in its TY2022 or TY2023 filing.
- Grant size: Across its TY2022, TY2023 and TY2024 filings, half of its 180 grants to organisations were $30,000 or less.
Where grants go
From grants to organisations in the foundation’s filings for tax years 2022–2024.
Grant dollars by state
5 other states: 2%
- The largest single recipient received 17% of grant dollars to organisations.
- In tax year 2024, 99% of grant dollars went to organisations The Derfner Foundation had funded in earlier filings.
- No grants were paid directly to organisations outside the US.
- 2% of grant dollars went to intermediaries that regrant to other organisations.
Grants
How much do they typically give?
Share of 60 grants in tax year 2024 by size
Median $30,000 (tax year 2024)
The largest grants to organisations in the foundation’s latest filing:
- Mount Sinai Department of Surgery · Unrestricted use$1,500,0002024 tax year
- Hebrew Home for the Aged · Unrestricted use$1,000,0002024 tax year
- Hospital for Special Surgery · Unrestricted use$1,000,0002024 tax year
- Southampton Hospital Foundation · Unretricted use$550,0002024 tax year
- Green 4 Kids · Unrestricted use$500,0002024 tax year
- Baby2Baby · Unrestricted use$250,0002024 tax year
- Kessler Foundation · Unrestricted use$250,0002024 tax year
- Red Autismo Foundation · Unrestricted use$150,0002024 tax year
Grants to organisations listed in the foundation’s Form 990-PF filings. Grants to individuals are not shown.
Officers and directors
- Andrea Lieberman — Trustee
- Jay Lieberman — Trustee
From the latest Form 990-PF filing
3 years of tax filings
| Year | Total expenses | Grants paid | Assets | Filing document |
|---|---|---|---|---|
| 2022 tax year | $8,610,518 | $6,555,000 | $131,868,578 | Filing for 2022 tax year |
| 2023 tax year | $9,848,147 | $7,313,500 | $200,614,469 | Filing for 2023 tax year |
| 2024 tax year | $9,674,288 | $7,143,000 | $217,981,344 | Filing for 2024 tax year |
Figures from the foundation’s IRS Form 990-PF filings. Assets are at fair market value at year end. The document icon links to each year’s filing on ProPublica Nonprofit Explorer.
Sources
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At a glance

Applying to The Derfner Foundation?
Hinchilla drafts your answers around this funder's priorities, using your organisation's own documents.
No credit card required
Contact
- New York, NY

Applying to The Derfner Foundation?
Hinchilla drafts your answers around this funder's priorities, using your organisation's own documents.
No credit card required
Contact
- New York, NY