Stephen Mack & Kelly Mack
Stephen Mack & Kelly Mack is a private foundation based in New York, New York. Its 2024 filing lists grants to charitable organizations including universities, health organizations, a school, and an educational fund.
Stephen Mack & Kelly Mack at a glance
In short: Stephen Mack & Kelly Mack gave $1.1M across 10 grants in 2024 (avg $109K), mostly in New York. 30% of 2024 grantees were new. Source: 2024 IRS Form 990-PF.
- Annual giving (2024)
- $1,085,667
- +19.2% vs 2023
- Grants made (2024)
- 10
- +0.0% vs 2023
- Average grant
- $108,567
- +19.2% vs 2023
- Median grant
- $68,750
- Total assets
- $30,344
- -94.1% vs 2023
- New grantees (estimate)
- 30% first-time grantees (3 of 10, 2024; small sample)
- Primary geography
- New York (68% 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 Stephen Mack & Kelly Mack
- Accepts unsolicited proposals
- No
- How to Apply
-
The foundation states that it makes contributions only to preselected charitable organizations and does not accept unsolicited requests for funds.
- Contact
Mailing address: Co Mreg-60 Columbus Cir 20 Fl, New York, NY 10023
Phone: (212) 507-9752
Application details from Grantable's research on the foundation's public materials; confirm on its website before applying.
Who Stephen Mack & Kelly Mack funds
How this funder distributes its grants
Top Recipients
Top 10 recipients in 2024
The largest 2024 recipient was NYU ($305K). Together the top 10 received $1.1M.
Grant Size Distribution
36 grants across all recorded years
The most common grant size was under $50K: 16 grants of 36 (44%).
Geographic Focus
Where this funder awards grants
In 2024, grant dollars went to recipients in New York (68%), Tennessee (23%), Washington, DC (8%), and Massachusetts (1%).
Grant Distribution by State
Share of 2024 grant dollars across all 10 itemized grants.
Cities
Is Stephen Mack & Kelly Mack open to new grantees?
30%
first-time grantees, 2024
In 2024, 3 of 10 grantees (30%) were first-time recipients. With only 10 grantees, that is a small sample: one grantee more or less moves the share by about 10 points. First grants averaged $4K; repeat grants $153K. How we count
Medians: $2K first-time, $123K repeat.
- 40% of 2024 grantees were also funded in 2023. Method
- Giving grew 32% from 2021 to 2024. Method
- In 2024 it paid out well above its IRS minimum distribution (the 5% rule). Method
Estimate from itemized grant lists in IRS Form 990-PF filings (2021–2024). 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 2021 to 2024, annual grant giving ranged from $667K (2022) to $1.1M (2024). In 2024 it made 10 grants totaling $1.1M.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| NYU New York, NY | Exempt Purpose | $305,000 |
| Musicians on Call Nashville, TN | Exempt Purpose | $250,000 |
| NYU Langone Health New York, NY | Exempt Purpose | $250,000 |
| 92Y New York, NY | Exempt Purpose | $122,667 |
| Georgetown University Washington, DC | Exempt Purpose | $87,500 |
| Riverdale Country School Bronx, NY | Exempt Purpose | $50,000 |
| The Schwarzman Animal Medical Center New York, NY | Exempt Purpose | $10,000 |
| Boston Children's Hospital Trust Boston, MA | Exempt Purpose | $7,500 |
| Lustgarten Foundation Uniondale, NY | Exempt Purpose | $1,500 |
| Atlantic Golf Club Educational Fund Bridgehampton, NY | Exempt Purpose | $1,500 |
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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 | $30,344 | $599,351 | $1,088,902 | $1,085,667 | 10 | $1,085,667 | $1,010 | $7,094 |
| 2023 | $514,822 | $225,722 | $918,021 | $910,667 | 10 | $910,667 | — | $9,922 |
| 2022 | $1,199,409 | $1,391,429 | $667,582 | $667,287 | 7 | $667,287 | $1,887 | $38,228 |
| 2021 | $476,802 | $851,068 | $826,028 | $822,167 | 9 | $822,167 | $10,483 | $32,681 |
Under IRS private-foundation payout rules, Stephen Mack & Kelly Mack reported a distributable amount of $7K 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 included support for organizations working in areas such as music in healthcare, education, and health. Musicians On Call describes its mission as bringing live and recorded music to patients, families, and caregivers in healthcare environments to promote and complement healing. Georgetown University says it was founded on the principle that discourse among people of different faiths, cultures, and beliefs promotes intellectual, ethical, and spiritual understanding. Riverdale Country School describes itself as a pre-K through grade 12 independent school focused on developing minds, building character, and creating community. The Atlantic Golf Club Educational Fund says it provides scholarships for higher education, including college, graduate school, and vocational school.
Grantmaking
In 2024, the foundation awarded 10 grants totaling $1,085,667. Grant amounts ranged from $1,500 to $305,000, with a median of $68,750. Its largest reported grants were $305,000 to NYU, $250,000 to Musicians On Call, $250,000 to NYU Langone Health, $122,667 to 92Y, and $87,500 to Georgetown University. Other 2024 grants included $50,000 to Riverdale Country School, $10,000 to The Schwarzman Animal Medical Center, $7,500 to Boston Children’s Hospital Trust, and $1,500 each to the Lustgarten Foundation and Atlantic Golf Club Educational Fund. The filing lists each grant purpose as “EXEMPT PURPOSE.”
Leadership & Key People
Leadership team and compensation from IRS filings
The 2024 filing lists Stephen Mack as president; Kelly Mack, Kerry Kennedy, and Richard Mack as vice presidents.
Stephen Mack & Kelly Mack is led by Stephen Mack, President on every filing since 2021; none of the 4 officers listed in 2024 report compensation.
Officers on the 2024 filing
Stephen Mack
President
On filings since 2021
No compensation reported
Kelly Mack
Vice President
On filings since 2021
No compensation reported
Kerry Kennedy
Vice President
On filings since 2021
No compensation reported
Richard Mack
Vice President
On filings since 2021
No compensation reported
Data from IRS Form 990 filings, 2021–2024. "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 Stephen Mack & Kelly Mack
How much does Stephen Mack & Kelly Mack give each year?
Stephen Mack & Kelly Mack gave $1.1M across 10 grants in 2024, according to its 2024 IRS Form 990-PF. In 2023 it gave $911K across 10 grants.
What is Stephen Mack & Kelly Mack's typical grant size?
Stephen Mack & Kelly Mack's median grant in 2024 was $68,750, and its average grant was $108,567, across 10 grants on its 2024 IRS Form 990-PF. Organizations receiving their first grant from Stephen Mack & Kelly Mack that year got $4K on average.
Where does Stephen Mack & Kelly Mack give grants?
Stephen Mack & Kelly Mack gives mostly in New York: 68% of the grant dollars itemized on its 2024 IRS Form 990-PF went to recipients there. The next largest states were Tennessee (23%) and District of Columbia (8%). The most frequent recipient cities were New York, NY (4 grants).
Who are Stephen Mack & Kelly Mack's largest grantees?
Stephen Mack & Kelly Mack's largest 2024 grantees include NYU ($305,000), Musicians on Call ($250,000) and NYU Langone Health ($250,000), according to its 2024 IRS Form 990-PF. Together they received 74% of its itemized 2024 grant dollars.
How large is Stephen Mack & Kelly Mack?
Stephen Mack & Kelly Mack reported $30K in total assets on its 2024 IRS Form 990-PF. It paid out $1.1M in qualifying distributions that year, against a required minimum of $7K (roughly 5% of its investment assets).
What does Stephen Mack & Kelly Mack fund?
No mission statement for the foundation is provided. Its 2024 grants included support for organizations working in areas such as music in healthcare, education, and health. See mission & focus areas ↑
How do I apply for a grant from Stephen Mack & Kelly Mack?
The foundation states that it 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 Stephen Mack & Kelly Mack's EIN?
Stephen Mack & Kelly Mack's EIN (Employer Identification Number) is 20-3901963. IRS Form 990 filing data is available on this page for 2021–2024.
Does Stephen Mack & Kelly Mack 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 2021–2024
Live grants for the work Stephen Mack & Kelly Mack funds
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Cite this profile
Grantable. (2026). Stephen Mack & Kelly Mack funder profile. GrantGraph. Retrieved October 22, 2026, from https://grantable.co/funders/stephen-mack-and-kelly-mack-morg_4cc907cc133d44648ff0c528421ac6f5
BibTeX
@misc{grantable_203901963_2026,
author = {{Grantable}},
title = {{Stephen Mack \& Kelly Mack funder profile}},
howpublished = {GrantGraph},
year = {2026},
url = {https://grantable.co/funders/stephen-mack-and-kelly-mack-morg_4cc907cc133d44648ff0c528421ac6f5},
note = {Accessed 2026-10-22. 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 Stephen Mack & Kelly Mack'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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