Martin & Toni Sosnoff Foundation
At a glance
This funder does not accept unsolicited applications. The foundation chooses the organisations it funds itself.
Key takeaways
- The filing says this foundation contributes only to preselected charitable organisations and does not accept unsolicited requests, so a cold approach should not be sent, and its giving looks relationship-led.
- If your work is in medical research or education, which the co-founders describe as its focus, that is the closest fit, though the filing also records gifts to health institutions, colleges and schools, performing-arts organisations, museums and animal-welfare organisations.
- Most of its grants are small: half of its 62 grants to organisations were $25,000 or less, and about 8 in 10 fall between $1,000 and $400,000, a typical band rather than a ceiling, since its largest grant was $4,350,000.
- Repeat grantees dominate, with 82% of its grant dollars to organisations it had also funded in the earlier filings.
- The filing states no geographic focus, and its grants have mostly gone to New York and Florida, but that is a pattern, not a rule about who may apply.
Overview
Martin & Toni Sosnoff Foundation is a US private foundation based in Palm Beach, FL.
What they fund
Profile derived from the foundation's IRS Form 990-PF filings (TY2024, TY2023, TY2022) and web pages about the foundation (news.hofstra.edu), with every statement checked against those sources. Sources read on 7 October 2026.
Priority Areas
The co-founders describe the foundation as supporting medical research and education among its charitable efforts. The grant filings record gifts to health institutions, colleges and schools, performing-arts organisations, museums and animal-welfare organisations, alongside other charitable recipients. Recorded giving is concentrated in New York and Florida, with smaller grants reaching California, the District of Columbia and North Carolina. The application information says it contributes only to preselected charitable organisations and does not accept unsolicited requests. The filing records all grant purposes simply as charitable, so it does not give a more detailed account of the purposes of those grants. This evidence describes several kinds of recipient but establishes no further stated funding themes.
Themes
- Medical research
- Education
Geographic Focus
No geographic focus is stated; the filings show grants mainly in New York and Florida.
How to apply
The foundation states that it does not accept unsolicited requests.
Application success factors
- Repeat giving: In its TY2024 filing, 82% 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 62 grants to organisations were $25,000 or less.
Where grants go
From grants to organisations in the foundation’s filings for tax years 2022–2024.
Grant dollars by state
- The largest single recipient received 44% of grant dollars to organisations.
- In tax year 2024, 82% of grant dollars went to organisations Martin & Toni Sosnoff Foundation had funded in earlier filings.
- No grants were paid directly to organisations outside the US.
- 4% of grant dollars went to intermediaries that regrant to other organisations.
Grants
How much do they typically give?
Share of 18 grants in tax year 2024 by size
Median $27,500 (tax year 2024)
The largest grants to organisations in the foundation’s latest filing:
- Mount Sinai Health System · Charitable$575,0002024 tax year
- NDH Foundation · Charitable$400,0002024 tax year
- New York Philharmonic · Charitable$334,0002024 tax year
- Icahn School of Medicine at Mount Sinai · Charitable$250,0002024 tax year
- Bard College · Charitable$250,0002024 tax year
- Palm Beach Opera · Charitable$170,0002024 tax year
- Chamber Music Society of Palm Beach · Charitable$40,0002024 tax year
- Norton Museum of Art · Charitable$38,0002024 tax year
Grants to organisations listed in the foundation’s Form 990-PF filings. Grants to individuals are not shown.
Officers and directors
- Toni Sosnoff — Trustee
- Martin Sosnoff — Trustee
From the latest Form 990-PF filing
3 years of tax filings
| Year | Total expenses | Grants paid | Assets | Filing document |
|---|---|---|---|---|
| 2022 tax year | $6,631,972 | $6,500,000 | $6,774,120 | Filing for 2022 tax year |
| 2023 tax year | $2,268,970 | $2,228,428 | $5,480,443 | Filing for 2023 tax year |
| 2024 tax year | $2,298,717 | $2,215,650 | $8,993,534 | 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 Martin & Toni Sosnoff Foundation?
Hinchilla drafts your answers around this funder's priorities, using your organisation's own documents.
No credit card required
Contact
- Palm Beach, FL
Applying to Martin & Toni Sosnoff Foundation?
Hinchilla drafts your answers around this funder's priorities, using your organisation's own documents.
No credit card required
Contact
- Palm Beach, FL