Mackesy Family Foundation
The Mackesy Family Foundation is a private foundation based in Bronxville, an individual recipient It made 18 grants totaling $2,860,750 in 2024, supporting organizations including a university foundation, a child and family services organization, a university, and youth-focused organizations.
Mackesy Family Foundation at a glance
In short: Mackesy Family Foundation gave $2.9M across 18 grants in 2024 (avg $159K), top state Virginia. 39% of 2024 grantees were new. Source: 2024 IRS Form 990-PF.
- Annual giving (2024)
- $2,860,750
- -18.7% vs 2023
- Grants made (2024)
- 18
- +0.0% vs 2023
- Average grant
- $158,931
- -18.7% vs 2023
- Median grant
- $37,500
- Total assets
- $22,652,493
- -6.4% vs 2023
- New grantees (estimate)
- 39% first-time grantees (7 of 18, 2024; small sample)
- Primary geography
- Virginia (47% 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 Mackesy Family Foundation
- Accepts unsolicited proposals
- No
- How to Apply
-
The foundation makes contributions only to preselected charitable organizations and does not accept unsolicited requests for funds.
- Contact
Mailing address: 25 Oakledge Road, Bronxville, NY 10708
Phone: (212) 893-9505
Application details from Grantable's research on the foundation's public materials; confirm on its website before applying.
Who Mackesy Family Foundation funds
How this funder distributes its grants
Top Recipients
Top 10 recipients in 2024
The largest 2024 recipient was William & Mary Foundation ($1.3M). Together the top 10 received $2.8M.
Grant Size Distribution
91 grants across all recorded years
The most common grant size was under $50K: 54 grants of 91 (59%).
Geographic Focus
Where this funder awards grants
In 2024, grant dollars went to recipients in Virginia (47%), an individual recipient (31%), Pennsylvania (9%), New Jersey (6%), and California (5%). The largest recipient-state shares were Virginia and an individual recipient
Grant Distribution by State
Share of 2024 grant dollars across all 18 itemized grants.
States
Cities
Is Mackesy Family Foundation open to new grantees?
39%
first-time grantees, 2024
In 2024, 7 of 18 grantees (39%) were first-time recipients. With only 18 grantees, that is a small sample: one grantee more or less moves the share by about 6 points. First grants averaged $56K; repeat grants $224K. How we count
Medians: $21K first-time, $50K repeat.
- 56% of 2024 grantees were also funded in 2023. Method
- Giving held roughly steady from 2021 to 2024 (+5%). Method
- In 2024 it paid out 239% 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 $2.0M (2020) to $3.8M (2022). In 2024 it made 18 grants totaling $2.9M.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| William & Mary Foundation Williamsburg, VA | General Support | $1,343,000 |
| Graham Windham Brooklyn, NY | General Support | $633,000 |
| US Squash Philadelphia, PA | General Support | $250,000 |
| Princeton University Princeton, NJ | General Support | $170,000 |
| The Rockefeller University New York, NY | General Support | $125,000 |
| Impact Through Golf Foundation La Quinta, CA | General Support | $90,000 |
| Discovery Land Company Foundation Beverly Hills, CA | General Support | $60,000 |
| Lead Africa New York, NY | General Support | $50,000 |
| Robin Hood Foundation New York, NY | General Support | $50,000 |
| Mainsprings Tulsa, OK | General Support | $25,000 |
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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 | $22,652,493 | $1,920,491 | $3,481,205 | $2,860,750 | 18 | $2,860,750 | $3,846,422 | $1,196,970 |
| 2023 | $24,205,361 | $4,519,122 | $3,868,708 | $3,517,321 | 18 | $3,517,321 | $843,645 | $1,102,779 |
| 2022 | $23,523,016 | $232,501 | $4,020,196 | $3,793,120 | 17 | $3,793,120 | $295,312 | $1,394,790 |
| 2021 | $27,267,830 | $2,601,786 | $3,253,787 | $2,736,502 | 13 | $2,736,502 | $8,637,451 | $1,413,464 |
| 2020 | $27,923,186 | $13,396,748 | $2,293,508 | $2,001,314 | 25 | — | $6,923,239 | $742,628 |
Under IRS private-foundation payout rules, Mackesy Family Foundation reported a distributable amount of $1.2M 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
No mission statement for the foundation is provided. Its 2024 grants show support for organizations with varied missions. For example, the William & Mary Foundation says it advances the university’s aspirations by securing private support and providing strategic leadership. Graham Windham says it works with children, youth, and families facing difficult challenges, while The Rockefeller University describes its work as biomedical and other scientific research and graduate education.
Other 2024 grantees describe missions that include youth leadership development (LEAD Africa), adolescent health education and mentorship (Grassroot Soccer), and college readiness support for economically disadvantaged student athletes (Destination College). These are the grantees’ stated missions, not stated focus areas of the foundation.
Grantmaking
In 2024, the foundation made 18 grants totaling $2,860,750. Grants ranged from $1,000 to $1,343,000, with a median of $37,500. The largest grants included $1,343,000 to the William & Mary Foundation, $633,000 to Graham Windham, $250,000 to US Squash, $170,000 to Princeton University, and $125,000 to The Rockefeller University. The listed grants were for general support.
Leadership & Key People
Leadership team and compensation from IRS filings
The 2024 filing lists D. Scott Mackesy and Jennifer T. Mackesy as co-trustees.
Mackesy Family Foundation's 2024 filing lists 2 officers; none of the 2 officers listed in 2024 report compensation.
Officers on the 2024 filing
D. Scott Mackesy
Co -Trustee
On filings since 2020
1 hr/week
No compensation reported
Jennifer T. Mackesy
Co-Trustee
On filings since 2020
1 hr/week
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 Mackesy Family Foundation
How much does Mackesy Family Foundation give each year?
Mackesy Family Foundation gave $2.9M across 18 grants in 2024, according to its 2024 IRS Form 990-PF. In 2023 it gave $3.5M across 18 grants.
What is Mackesy Family Foundation's typical grant size?
Mackesy Family Foundation's median grant in 2024 was $37,500, and its average grant was $158,931, across 18 grants on its 2024 IRS Form 990-PF. Organizations receiving their first grant from Mackesy Family Foundation that year got $56K on average.
Where does Mackesy Family Foundation give grants?
Mackesy Family Foundation's top state is Virginia, with 47% of the grant dollars itemized on its 2024 IRS Form 990-PF. The next largest states were New York (31%) and Pennsylvania (9%). The most frequent recipient cities were New York, NY (6 grants).
Does Mackesy Family Foundation give general operating support?
Yes: 100% of Mackesy Family Foundation's 2024 grants with a stated purpose (18 of 18) were for general or operating support, per its 2024 IRS Form 990-PF.
Who are Mackesy Family Foundation's largest grantees?
Mackesy Family Foundation's largest 2024 grantees include William & Mary Foundation ($1,343,000), Graham Windham ($633,000) and US Squash ($250,000), according to its 2024 IRS Form 990-PF. Together they received 78% of its itemized 2024 grant dollars.
How large is Mackesy Family Foundation?
Mackesy Family Foundation reported $22.7M in total assets on its 2024 IRS Form 990-PF. It paid out $2.9M in qualifying distributions that year, against a required minimum of $1.2M (roughly 5% of its investment assets).
What does Mackesy Family Foundation fund?
No mission statement for the foundation is provided. Its 2024 grants show support for organizations with varied missions. For example, the William & Mary Foundation says it advances the university’s aspirations by securing private support and providing strategic leadership. See mission & focus areas ↑
How do I apply for a grant from Mackesy Family Foundation?
The foundation makes contributions only to preselected charitable organizations and does not accept unsolicited requests for funds. Eligibility and process details are in the grantmaking section of this profile. See how to apply ↑
What is Mackesy Family Foundation's EIN?
Mackesy Family Foundation's EIN (Employer Identification Number) is 47-2587937. IRS Form 990 filing data is available on this page for 2020–2024.
Does Mackesy Family 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
(6)
When this profile's IRS filing data changed on Grantable
- Updated Form 990-PF for fiscal year 2020 (received by the IRS November 14, 2021)
- Updated Form 990-PF for fiscal year 2021 (received by the IRS November 15, 2022)
- Updated Form 990-PF for fiscal year 2022 (received by the IRS November 15, 2023)
- Updated Form 990-PF for fiscal year 2023 (received by the IRS August 7, 2024)
- Updated Form 990-PF for fiscal year 2024 (received by the IRS November 14, 2025)
- IRS filings on file for fiscal years 2020–2024
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Cite this profile
Grantable. (2026). Mackesy Family Foundation funder profile. GrantGraph. Retrieved October 11, 2026, from https://grantable.co/funders/mackesy-family-foundation-morg_9da5691fa5ab44f79d5db1b8a61baed6
BibTeX
@misc{grantable_472587937_2026,
author = {{Grantable}},
title = {{Mackesy Family Foundation funder profile}},
howpublished = {GrantGraph},
year = {2026},
url = {https://grantable.co/funders/mackesy-family-foundation-morg_9da5691fa5ab44f79d5db1b8a61baed6},
note = {Accessed 2026-10-11. 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 Mackesy Family 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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