The Della Pietra Foundation
The Della Pietra Foundation is a private foundation based in Jericho, New York. Its 2025 grants went to charitable organizations working in areas including biological research, mathematical sciences, surgical data infrastructure, education, health services, science communication, and schooling.
Key facts about The Della Pietra Foundation
In short: The Della Pietra Foundation gave $5.8M across 13 grants in 2025 (avg $450K), top state New York. 8% of 2025 grantees were new. Source: 2025 IRS Form 990-PF.
- EIN
- 83-2596679
- Latest 990 filing
- Form 990-PF, 2025
- Annual giving (2025)
- $5,844,658
- Grants made (2025)
- 13
- Average grant
- $449,589
- Median grant
- $300,000
- New grantees (estimate)
- 8% first-time grantees (1 of 13, 2025)
- Total assets
- $67,288,351
- Primary geography
- New York (49% of itemized 2025 grant dollars)
- Accepts unsolicited proposals
- No
- How to apply
- The foundation does not accept unsolicited requests for funds and states that it makes contributions only to preselected charitable organizations. Full details ↓
Data from IRS Form 990-PF, 2025; updated September 2026. New grantees are estimated by matching recipient names across years (methodology). Application details from Grantable's research on the foundation's public materials; confirm on its website before applying.
Financial Overview
From 2025 IRS Form 990-PF · View filing
Total Assets
$67.3M
+4.3% YoY
Annual Giving
$5.8M
-4.3% YoY
Grant Count
13
-13.3% YoY
Avg Grant Size
$450K
+10.4% YoY
Under IRS private-foundation payout rules, The Della Pietra Foundation reported a distributable amount of $3.5M for 2025 — the minimum it must pay out in qualifying distributions.
Is The Della Pietra Foundation open to new grantees?
8%
first-time grantees, 2025
In 2025, 1 of 13 grantees (8%) were first-time recipients. First grants averaged $5K; repeat grants $487K. How we count
Medians: $5K first-time, $405K repeat.
- 92% of 2025 grantees were also funded in 2024. Method
- Giving held roughly steady from 2022 to 2025 (−14%). Method
- In 2025 it paid out 169% of its IRS minimum distribution (the 5% rule). Method
Estimate from itemized grant lists in IRS Form 990-PF filings (2019–2025). Recipient names are matched across years, so a renamed or misspelled grantee can look new; grants to individuals are left out. Methodology.
Mission & Focus Areas
No foundation mission statement is provided. Its 2025 grantees describe a range of activities: Cold Spring Harbor Laboratory conducts biological research, particularly basic research in molecular biology and genetics; the Surgeon’s Data Science Collective builds infrastructure for the digital transformation of global surgery; and Harvard College carries out education and research across academic domains. Pivot Works says it partners with Madagascar’s government to improve the local health system and reduce maternal and child mortality. The World Science Foundation produces content connecting science, arts, journalism, and education, while Harbor Country Day School describes its work as cultivating wonder and inspiring confident learners and leaders.
Grantmaking
In 2025, the foundation made 13 grants totaling $5,844,658. Grant amounts ranged from $5,000 to $1,155,000, with a median grant of $300,000. The largest awards included $1,155,000 to Cold Spring Harbor Laboratory, $1,100,000 to the Simons Laufer Mathematical Sciences Institute, $1,089,658 to the Stony Brook Foundation, and $1,000,000 to the Surgeon’s Data Science Collective. Harvard College received $510,000 to support research on the Swampland program under Professor Cumrun Vafa; Pivot Works received $300,000.
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Geographic Focus
Where this funder awards grants
In 2025, recipients in New York received 49% of grant dollars, followed by California (19%), Washington, DC (17%), Massachusetts (14%), and Florida (1%).
Grant Distribution by State
Share of 2025 grant dollars across all 13 itemized grants.
Cities
Giving Over Time
Total grant dollars and number of grants per year
From 2019 to 2025, annual grant giving ranged from $3.9M (2019) to $6.8M (2022). In 2025 it made 13 grants totaling $5.8M.
Grant Insights
How this funder distributes its grants
Top Recipients
Top 10 recipients in 2025
The largest 2025 recipient was Cold Spring Harbor Laboratory ($1.2M). Together the top 10 received $5.8M.
Grant Size Distribution
63 grants across all recorded years
The most common grant size was under $50K: 15 grants of 63 (24%).
Giving History
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Cold Spring Harbor Laboratory Cold Spring Harbor, NY | Unrestricted | $1,155,000 |
| Simons Laufer Mathematical Sciences Institute Berkeley, CA | Unrestricted | $1,100,000 |
| Stony Brook Foundation Stony Brook, NY | Unrestricted | $1,089,658 |
| Surgeons Data Science Collective Inc Washington, DC | Unrestricted | $1,000,000 |
| Friends of Ihes Inc NY New York, NY | Unrestricted | $510,000 |
| President and Fellows of Harvard College Cambridge, MA | Support the research on the swampland program under the direction of professor cumrun vafa | $510,000 |
| Pivot Works Boston, MA | Unrestricted | $300,000 |
| World Science Foundation New York, NY | Unrestricted | $60,000 |
| Community Foundation of Collier County Naples, FL | Unrestricted | $50,000 |
| Planned Parenthood Hudson Peconic Action Fund Inc Elmsford, NY | Unrestricted | $25,000 |
Financial History
Multi-year comparison from IRS filings
| Filing year | Grant total | Number of grants |
|---|---|---|
| 2025 | $5,844,658 | 13 |
| 2024 | $6,106,025 | 15 |
| 2023 | $4,614,917 | 14 |
| Metric | 2025 | 2024 | 2023 |
|---|---|---|---|
| Total Assets | $67,288,351 | $64,535,496 | $58,675,882 |
| Revenue | $8,927,955 | $12,230,798 | $30,938,047 |
| Expenses | $6,175,100 | $6,251,040 | $4,735,882 |
| Qualifying Distributions | $5,844,658 | $6,106,025 | $4,614,917 |
| Net Investment Income | $3,315,862 | $6,378,166 | $858,229 |
| Distributable Amount | $3,456,492 | $3,061,173 | $1,811,205 |
Data update history
When this profile's IRS filing data changed on Grantable
- Updated Form 990-PF for fiscal year 2024 (received by the IRS May 15, 2025)
- Updated Form 990-PF for fiscal year 2025 (received by the IRS May 11, 2026)
- Added Form 990-PF for fiscal year 2019 (received by the IRS May 20, 2020)
- Updated Form 990-PF for fiscal year 2020 (received by the IRS June 2, 2021)
- Updated Form 990-PF for fiscal year 2021 (received by the IRS May 13, 2022)
- Updated Form 990-PF for fiscal year 2022 (received by the IRS May 12, 2023)
- Updated Form 990-PF for fiscal year 2023 (received by the IRS November 14, 2024)
Leadership & Key People
Leadership team and compensation from IRS filings
The 2025 filing lists Barbara Amonson as president and Vincent Dellapietra as secretary.
The Della Pietra Foundation is led by Barbara Amonson, President on every filing since 2019; none of the 2 officers listed in 2025 report compensation.
Officers on the 2025 filing
Barbara Amonson
President
On filings since 2019
3 hrs/week
No compensation reported
Vincent Dellapietra
Secretary
On filings since 2019
3 hrs/week
No compensation reported
Data from IRS Form 990 filings, 2019–2025. "On filings since" is the earliest filing we hold that lists the person; hours are average hours per week as reported.
Contact
Mailing address: 100 Jericho Quadrangle 220, Jericho, NY 11753
Phone: (516) 333-6881
Frequently asked questions about The Della Pietra Foundation
How much does The Della Pietra Foundation give each year?
The Della Pietra Foundation gave $5.8M across 13 grants in 2025, according to its 2025 IRS Form 990-PF. In 2024 it gave $6.1M across 15 grants.
What is The Della Pietra Foundation's typical grant size?
The Della Pietra Foundation's median grant in 2025 was $300,000, and its average grant was $449,589, across 13 grants on its 2025 IRS Form 990-PF. Organizations receiving their first grant from The Della Pietra Foundation that year got $5K on average.
Where does The Della Pietra Foundation give grants?
The Della Pietra Foundation's top state is New York, with 49% of the grant dollars itemized on its 2025 IRS Form 990-PF. The next largest states were California (19%) and District of Columbia (17%). The most frequent recipient cities were New York, NY (2 grants).
Does The Della Pietra Foundation give general operating support?
Yes: 92% of The Della Pietra Foundation's 2025 grants with a stated purpose (12 of 13) were for general or operating support, per its 2025 IRS Form 990-PF.
Who are The Della Pietra Foundation's largest grantees?
The Della Pietra Foundation's largest 2025 grantees include Cold Spring Harbor Laboratory ($1,155,000), Simons Laufer Mathematical Sciences Institute ($1,100,000) and Stony Brook Foundation ($1,089,658), according to its 2025 IRS Form 990-PF. Together they received 57% of its itemized 2025 grant dollars.
How large is The Della Pietra Foundation?
The Della Pietra Foundation reported $67.3M in total assets on its 2025 IRS Form 990-PF. It paid out $5.8M in qualifying distributions that year, against a required minimum of $3.5M (roughly 5% of its investment assets).
What does The Della Pietra Foundation fund?
No foundation mission statement is provided. See mission & focus areas ↑
How do I apply for a grant from The Della Pietra Foundation?
The foundation does not accept unsolicited requests for funds and states that it makes contributions only to preselected charitable organizations. Eligibility and process details are in the grantmaking section of this profile. See how to apply ↑
What is The Della Pietra Foundation's EIN?
The Della Pietra Foundation's EIN (Employer Identification Number) is 83-2596679. IRS Form 990 filing data is available on this page for 2019–2025.
Does The Della Pietra Foundation accept unsolicited proposals?
No, according to Grantable's research on the foundation's published guidelines. See how to apply ↑
Data last updated September 2026. Sourced from IRS Form 990-PF filings. Research dossier generated September 2026.
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