Dumbarton Foundation
Dumbarton Foundation is a private foundation based in Yardley, Pennsylvania. In filing year 2024, it reported 11 grants totaling $92,000 to organizations including schools and universities, churches, and community and cultural organizations.
Dumbarton Foundation at a glance
In short: Dumbarton Foundation gave $92K across 11 grants in 2024 (avg $8K), top state New Jersey. 27% of 2024 grantees were new. Source: 2024 IRS Form 990-PF.
- Annual giving (2024)
- $92,000
- +15.0% vs 2023
- Grants made (2024)
- 11
- +37.5% vs 2023
- Average grant
- $8,364
- -16.4% vs 2023
- Median grant
- $3,500
- Total assets
- $1,111,898
- -8.4% vs 2023
- New grantees (estimate)
- 27% first-time grantees (3 of 11, 2024; small sample)
- Primary geography
- New Jersey (38% of itemized 2024 grant dollars)
- Latest 990 filing
- Form 990-PF, 2024 View filing
Data from IRS Form 990-PF, 2024; updated October 2026. New grantees are estimated by matching recipient names across years (methodology).
How to apply to Dumbarton Foundation
- 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.
- Contact
Mailing address: 39 Creekview Lane, Yardley, PA 19067
Phone: (973) 228-4228
Application details from Grantable's research on the foundation's public materials; confirm on its website before applying.
Who Dumbarton Foundation funds
How this funder distributes its grants
Top Recipients
Top 10 recipients in 2024
The largest 2024 recipient was Newark Academy ($35K). Together the top 10 received $91K.
Grant Size Distribution
32 grants across all recorded years
The most common grant size was under $50K: 32 grants of 32 (100%).
Geographic Focus
Where this funder awards grants
The foundation’s 2024 grants went to organizations in New Jersey (38% of grant dollars), Massachusetts (35%), New York (21%), Wyoming (4%), and Georgia (1%).
Grant Distribution by State
Share of 2024 grant dollars across all 11 itemized grants.
Cities
Is Dumbarton Foundation open to new grantees?
27%
first-time grantees, 2024
In 2024, 3 of 11 grantees (27%) were first-time recipients. With only 11 grantees, that is a small sample: one grantee more or less moves the share by about 9 points. First grants averaged $1K; repeat grants $11K. How we count
Medians: $1K first-time, $5K repeat.
- 64% of 2024 grantees were also funded in 2023. Method
- Giving held roughly steady from 2021 to 2024 (+2%). Method
- In 2024 it paid out 109% of its IRS minimum distribution (the 5% rule). Method
Estimate from itemized grant lists in IRS Form 990-PF filings (2020–2024). Recipient names are matched across years, so a renamed or misspelled grantee can look new; grants to individuals are left out. Methodology.
Giving History
Giving Over Time
Total grant dollars and number of grants per year
From 2020 to 2024, annual grant giving ranged from $70K (2020) to $92K (2024). In 2024 it made 11 grants totaling $92K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Newark Academy Livingston, NJ | To Support School Programs | $35,000 |
| Chatham Fund of the Cape Cod Founda So Yarmouth, MA | Grant to 501corganization to improve and enrichthe chatham community | $22,000 |
| Syracuse University Syracuse, NY | To Support School Programs | $15,000 |
| St Christophers Episcopal Church Chatham, MA | To Support Church Missions | $5,000 |
| St Johns Episcopal Church Jackson, WY | To Support Church Missions | $4,000 |
| Manhattanville University Purchase, NY | To Support School Programs | $3,500 |
| Amherst College Amherst, MA | To Support School Programs | $2,500 |
| Friends of Chatham Waterways Chatham, MA | Grant to 501c organization to support the commitment to the protection of the chatham, ma waterways | $2,000 |
| Chatham Orpheum Theater Chatham, MA | Grant to 501c organization to impove and enrich the chatham community | $1,000 |
| Auschwitz Inst for Prevention of GE New York, NY | Grant to 501c organization to support strengthening policies for prevention of mass atrocities | $1,000 |
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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 |
|---|---|---|---|---|---|---|---|---|
| 2024 | $1,111,898 | $79,928 | $182,226 | $92,000 | 11 | $92,000 | — | $84,645 |
| 2023 | $1,214,215 | $33,388 | $144,067 | $80,000 | 8 | $80,000 | — | $80,358 |
| 2022 | $1,326,582 | $169,095 | $133,306 | $85,000 | 5 | $85,000 | $120,789 | $84,352 |
| 2021 | $1,291,077 | $111,712 | $181,748 | $90,000 | 5 | $90,000 | $19,964 | $90,561 |
| 2020 | $1,362,600 | $135,389 | $98,579 | $70,000 | 3 | — | $106,810 | $72,743 |
Under IRS private-foundation payout rules, Dumbarton Foundation reported a distributable amount of $85K for 2024 — the minimum it must pay out in qualifying distributions.
Research compiled by Grantable AI from public sources. Last updated September 2026.
Mission & Focus Areas
The foundation’s own mission is not stated in the available information. Its 2024 grants included support for school programs and church missions, as well as grants for community enrichment, waterways protection, atrocity prevention policies, and vocal music.
Among its grantees, Newark Academy describes its mission as contributing thoughtful and compassionate citizens who embrace responsibilities as ethical, intellectual, and civic stewards. Syracuse University describes a mission centered on student success through global study, experiential learning, interdisciplinary scholarship, creativity, and entrepreneurial endeavors. Skylark Vocal Ensemble says it designs, rehearses, records, and performs choral music programs and educates the next generation of choral artists.
Grantmaking
In filing year 2024, the foundation made 11 grants totaling $92,000. Grant amounts ranged from $1,000 to $35,000, with a median grant of $3,500.
The largest grants included $35,000 to Newark Academy for school programs, $22,000 to Chatham Fund of the Cape Cod Foundation for community improvement and enrichment, and $15,000 to Syracuse University for school programs. Other grants included $5,000 to St. Christophers Episcopal Church and $4,000 to St. Johns Episcopal Church for church missions; $3,500 to Manhattanville University and $2,500 to Amherst College for school programs; and grants of $1,000 to $2,000 to community, environmental, atrocity-prevention, and music organizations.
Leadership & Key People
Leadership team and compensation from IRS filings
The 2024 filing lists Donald T MacNaughton as Director/President, David J MacNaughton as Director/Vice President/Secretary, and Joan L Apisa as Treasurer.
Dumbarton Foundation is led by Donald T. Macnaughton, Director & President on every filing since 2020; none of the 3 officers listed in 2024 report compensation.
Officers on the 2024 filing
Donald T. Macnaughton
Director & President
On filings since 2020
No compensation reported
David J. Macnaughton
Director, Vice President & Secretary
On filings since 2020
No compensation reported
Joan L. Apisa
Teasurer
On filings since 2020
No compensation reported
Data from IRS Form 990 filings, 2020–2024. "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 Dumbarton Foundation
How much does Dumbarton Foundation give each year?
Dumbarton Foundation gave $92K across 11 grants in 2024, according to its 2024 IRS Form 990-PF. In 2023 it gave $80K across 8 grants.
What is Dumbarton Foundation's typical grant size?
Dumbarton Foundation's median grant in 2024 was $3,500, and its average grant was $8,364, across 11 grants on its 2024 IRS Form 990-PF. Organizations receiving their first grant from Dumbarton Foundation that year got $1K on average.
Where does Dumbarton Foundation give grants?
Dumbarton Foundation's top state is New Jersey, with 38% of the grant dollars itemized on its 2024 IRS Form 990-PF. The next largest states were Massachusetts (35%) and New York (21%). The most frequent recipient cities were Chatham, MA (3 grants).
Does Dumbarton Foundation give general operating support?
Not in 2024: none of the 11 grants with a stated purpose on Dumbarton Foundation's 2024 IRS Form 990-PF were described as general or operating support. Recurring purposes include "To Support School Programs" (4 grants).
Who are Dumbarton Foundation's largest grantees?
Dumbarton Foundation's largest 2024 grantees include Newark Academy ($35,000), Chatham Fund of the Cape Cod Founda ($22,000) and Syracuse University ($15,000), according to its 2024 IRS Form 990-PF. Together they received 78% of its itemized 2024 grant dollars.
How large is Dumbarton Foundation?
Dumbarton Foundation reported $1.1M in total assets on its 2024 IRS Form 990-PF. It paid out $92K in qualifying distributions that year, against a required minimum of $85K (roughly 5% of its investment assets).
What does Dumbarton Foundation fund?
The foundation’s own mission is not stated in the available information. Its 2024 grants included support for school programs and church missions, as well as grants for community enrichment, waterways protection, atrocity prevention policies, and vocal music. See mission & focus areas ↑
How do I apply for a grant from Dumbarton 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 Dumbarton Foundation's EIN?
Dumbarton Foundation's EIN (Employer Identification Number) is 13-3708257. IRS Form 990 filing data is available on this page for 2020–2024.
Does Dumbarton Foundation accept unsolicited proposals?
No, according to Grantable's research on the foundation's published guidelines. See how to apply ↑
Data last updated October 2026. Sourced from IRS Form 990-PF filings. Research dossier generated September 2026.
Data update history
(1)
When this profile's IRS filing data changed on Grantable
- IRS filings on file for fiscal years 2020–2024
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Cite this profile
Grantable. (2026). Dumbarton Foundation funder profile. GrantGraph. Retrieved October 12, 2026, from https://grantable.co/funders/dumbarton-foundation-morg_b0c9b27054dc4326ae358d37150a1161
BibTeX
@misc{grantable_133708257_2026,
author = {{Grantable}},
title = {{Dumbarton Foundation funder profile}},
howpublished = {GrantGraph},
year = {2026},
url = {https://grantable.co/funders/dumbarton-foundation-morg_b0c9b27054dc4326ae358d37150a1161},
note = {Accessed 2026-10-12. Data licensed CC BY 4.0}
}The figures on this page are open data under CC BY 4.0: reuse them with credit to Grantable and a link. Download the data.
Figures come from Dumbarton Foundation's IRS filings (methodology). AI-written summaries, news items and logos are not covered by the open licence. Spot an error? Email hello@grantable.co.
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