Christy and John Mack Foundation
The Christy and John Mack Foundation is a private foundation based in Purchase, New York. In 2025, it gave grants to four charitable organizations in the District of Columbia, Pennsylvania, Massachusetts, and South Carolina.
Christy and John Mack Foundation at a glance
In short: Christy and John Mack Foundation gave $3.9M across 4 grants in 2025 (avg $971K), mostly in District of Columbia. Source: 2025 IRS Form 990-PF.
- Annual giving (2025)
- $3,882,000
- -22.1% vs 2024
- Grants made (2025)
- 4
- +0.0% vs 2024
- Average grant
- $970,500
- -22.1% vs 2024
- Median grant
- $416,000
- Total assets
- $2,272,270
- -4.4% vs 2024
- Primary geography
- District of Columbia (78% of itemized 2025 grant dollars)
- Latest 990 filing
- Form 990-PF, 2025 View filing
Data from IRS Form 990-PF, 2025; updated October 2026.
How to apply to Christy and John Mack 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: PO Box 99, Purchase, NY 10577
Phone: (914) 925-0229
Application details from Grantable's research on the foundation's public materials; confirm on its website before applying.
Who Christy and John Mack Foundation funds
How this funder distributes its grants
Top Recipients
Top 4 recipients in 2025
The largest 2025 recipient was Healthy US Collaborative Inc ($3.0M). Together the top 4 received $3.9M.
Grant Size Distribution
44 grants across all recorded years
The most common grant size was under $50K: 11 grants of 44 (25%).
Geographic Focus
Where this funder awards grants
In 2025, 78% of grant dollars went to recipients in the District of Columbia, 15% to Pennsylvania, 6% to Massachusetts, and 1% to South Carolina.
Grant Distribution by State
Share of 2025 grant dollars across all 4 itemized grants.
States
Cities
How Christy and John Mack Foundation gives
- Giving fell 45% from 2022 to 2025. Method
- In 2025 it paid out 537% of its IRS minimum distribution (the 5% rule). Method
From the foundation's IRS Form 990-PF filings. Methodology.
Giving History
Giving Over Time
Total grant dollars and number of grants per year
From 2020 to 2025, annual grant giving ranged from $3.7M (2023) to $7.0M (2022). In 2025 it made 4 grants totaling $3.9M.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Healthy US Collaborative Inc Washington, DC | General Purpose or Educational | $3,030,000 |
| Microsociety Inc Philadelphia, PA | General Purpose or Educational | $582,000 |
| Fair Play Boston, MA | General Purpose or Educational | $250,000 |
| Sea Corps Maritime Group Mount Pleasant, SC | General Purpose or Educational | $20,000 |
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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 |
|---|---|---|---|---|---|---|---|---|
| 2025 | $2,272,270 | $9,355,603 | $3,891,734 | $3,882,000 | 4 | $3,886,866 | $3,349,641 | $724,258 |
| 2024 | $2,377,337 | $7,152,411 | $5,070,672 | $4,982,000 | 4 | $4,986,336 | $2,123,364 | $573,396 |
| 2023 | $2,614,335 | $7,187,008 | $3,726,538 | $3,662,000 | 8 | $3,667,769 | $3,558,144 | $612,361 |
| 2022 | $1,548,375 | $9,668,598 | $7,072,741 | $7,027,000 | 11 | $7,032,371 | $4,737,523 | $489,867 |
| 2021 | $2,300,848 | $6,931,895 | $4,594,628 | $4,559,000 | 17 | $4,564,315 | $2,690,623 | $757,105 |
| 2020 | $2,911,838 | $4,094,881 | $4,542,470 | $4,532,000 | 15 | — | $1,192,115 | $593,051 |
Under IRS private-foundation payout rules, Christy and John Mack Foundation reported a distributable amount of $724K for 2025 — 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 2025 grants were reported for “general purpose or educational” purposes. One recipient, MicroSociety Inc., says its mission is to help children and youth become thinkers, problem solvers, and innovators by giving them opportunities to experiment, create, produce, and modify within interdependent, free-market communities.
Grantmaking
In 2025, the foundation awarded four grants totaling $3,882,000. Awards ranged from $20,000 to $3,030,000, with a median grant of $416,000. Recipients included Healthy US Collaborative Inc. ($3,030,000), MicroSociety Inc. ($582,000), Fair Play ($250,000), and Sea Corps Maritime Group ($20,000).
Leadership & Key People
Leadership team and compensation from IRS filings
The 2025 filing lists John J. Mack as director and Christy K. Mack as president.
Christy and John Mack Foundation is led by Christy K. Mack, President on every filing since 2020; none of the 2 officers listed in 2025 report compensation.
Officers on the 2025 filing
Christy K. Mack
President
On filings since 2020
2 hrs/week
No compensation reported
John J. Mack
Director
On filings since 2020
1 hr/week
No compensation reported
Data from IRS Form 990 filings, 2020–2025. "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 Christy and John Mack Foundation
How much does Christy and John Mack Foundation give each year?
Christy and John Mack Foundation gave $3.9M across 4 grants in 2025, according to its 2025 IRS Form 990-PF. In 2024 it gave $5.0M across 4 grants.
What is Christy and John Mack Foundation's typical grant size?
Christy and John Mack Foundation's median grant in 2025 was $416,000, and its average grant was $970,500, across 4 grants on its 2025 IRS Form 990-PF.
Where does Christy and John Mack Foundation give grants?
Christy and John Mack Foundation gives mostly in District of Columbia: 78% of the grant dollars itemized on its 2025 IRS Form 990-PF went to recipients there. The next largest states were Pennsylvania (15%) and Massachusetts (6%).
Does Christy and John Mack Foundation give general operating support?
Yes: 100% of Christy and John Mack Foundation's 2025 grants with a stated purpose (4 of 4) were for general or operating support, per its 2025 IRS Form 990-PF.
How large is Christy and John Mack Foundation?
Christy and John Mack Foundation reported $2.3M in total assets on its 2025 IRS Form 990-PF. It paid out $3.9M in qualifying distributions that year, against a required minimum of $724K (roughly 5% of its investment assets).
What does Christy and John Mack Foundation fund?
No mission statement for the foundation is provided. Its 2025 grants were reported for “general purpose or educational” purposes. See mission & focus areas ↑
How do I apply for a grant from Christy and John Mack 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 Christy and John Mack Foundation's EIN?
Christy and John Mack Foundation's EIN (Employer Identification Number) is 13-3746731. IRS Form 990 filing data is available on this page for 2020–2025.
Does Christy and John Mack 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
(2)
When this profile's IRS filing data changed on Grantable
- Added Form 990-PF for fiscal year 2025 (received by the IRS May 6, 2026)
- IRS filings on file for fiscal years 2020–2024
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