The Della Pietra Foundation
At a glance
This funder does not accept unsolicited applications. The foundation chooses the organisations it funds itself.
Key takeaways
- The Della Pietra Foundation does not accept unsolicited requests, so a small charity should not send it an application unless it has been invited to do so.
- Its filings show largely unrestricted grants to a varied mix of recipients, including research and academic institutions, a school, an arts organisation, a community foundation and a reproductive-health organisation, so a clear account of your work is worth having ready if an introduction is made.
- About 8 in 10 of its 42 grants to organisations fell between $15,000 and $1,100,000, with a median of $250,000, so a request towards the lower end of that band is the more realistic starting point, though the band is typical rather than a limit.
- In the latest filing, 99% of its grant dollars to organisations went to organisations it had also funded in earlier filings, so new recipients appear to form a small share of its giving.
- The filings give no deadlines and no stated geographic focus, so timing and location cannot be planned from them alone.
Overview
The Della Pietra Foundation is a US private foundation based in Jericho, NY.
What they fund
Profile based on the foundation's IRS Form 990-PF filings (TY2025, TY2024, TY2023) 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 a largely unrestricted giving approach, with grants to scientific research and academic institutions, a data-science organisation, a school, an arts organisation, a community foundation and a reproductive-health organisation. A smaller part of the giving supports research on a particular programme. Recipients therefore represent several kinds of charitable organisations, rather than a single recipient type. The filing records most grants as unrestricted and does not set out specific eligibility criteria or an open application process. It does not specify who may apply.
Geographic Focus
No geographic focus is stated; the filings show grants mainly in New York, California, Massachusetts and District of Columbia.
How to apply
The foundation states that it does not accept unsolicited requests.
Application success factors
- Repeat giving: In its TY2025 filing, 99% of its grant dollars to organisations went to organisations it had also funded in its TY2023 or TY2024 filing.
- Grant size: Across its TY2023, TY2024 and TY2025 filings, half of its 42 grants to organisations were $250,000 or less.
Where grants go
From grants to organisations in the foundation’s filings for tax years 2023–2025.
Grant dollars by state
1 other state: <1%
- The largest single recipient received 21% of grant dollars to organisations.
- In tax year 2025, 100% of grant dollars went to organisations The Della Pietra Foundation had funded in earlier filings.
- No grants were paid directly to organisations outside the US.
- <1% of grant dollars went to intermediaries that regrant to other organisations.
Grants
How much do they typically give?
Share of 13 grants in tax year 2025 by size
Median $300k (tax year 2025)
The largest grants to organisations in the foundation’s latest filing:
- Cold Spring Harbor Laboratory · Unrestricted$1,155,0002025 tax year
- Simons Laufer Mathematical Sciences Institute · Unrestricted$1,100,0002025 tax year
- Stony Brook Foundation · Unrestricted$1,089,6582025 tax year
- Surgeons Data Science Collective · Unrestricted$1,000,0002025 tax year
- Friends Of Ihes Inc Ny · Unrestricted$510,0002025 tax year
- President and Fellows of Harvard College · Support the research on the swampland program under the direction of professor cumrun vafa$510,0002025 tax year
- Pivot Works · Unrestricted$300,0002025 tax year
- World Science Foundation · Unrestricted$60,0002025 tax year
Grants to organisations listed in the foundation’s Form 990-PF filings. Grants to individuals are not shown.
Officers and directors
- Vincent Dellapietra — Secretary
- Barbara Amonson — President
From the latest Form 990-PF filing
3 years of tax filings
| Year | Total expenses | Grants paid | Assets | Filing document |
|---|---|---|---|---|
| 2023 tax year | $4,735,882 | $4,614,917 | $58,223,669 | Filing for 2023 tax year |
| 2024 tax year | $6,251,040 | $6,106,025 | $70,777,060 | Filing for 2024 tax year |
| 2025 tax year | $6,175,100 | $5,844,658 | $78,173,025 | Filing for 2025 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 Della Pietra Foundation?
Hinchilla drafts your answers around this funder's priorities, using your organisation's own documents.
No credit card required
Contact
- Jericho, NY
Applying to The Della Pietra Foundation?
Hinchilla drafts your answers around this funder's priorities, using your organisation's own documents.
No credit card required
Contact
- Jericho, NY