Mattis Family Foundation
Mattis Family Foundation is a private foundation, based in Greenwich, CT. IRS filing data is available from 2020 through 2025. As of 2025, the organization holds $3.4M in total assets. In 2025, it awarded 8 grants totaling $280K. Net investment income was $171K.
Mattis Family Foundation at a glance
In short: Mattis Family Foundation gave $280K across 8 grants in 2025 (avg $35K), mostly in Connecticut. Source: 2025 IRS Form 990-PF.
- Annual giving (2025)
- $280,000
- +30.2% vs 2024
- Grants made (2025)
- 8
- -20.0% vs 2024
- Average grant
- $35,000
- +62.8% vs 2024
- Median grant
- $15,000
- Total assets
- $3,445,607
- +5.3% vs 2024
- Primary geography
- Connecticut (75% of itemized 2025 grant dollars)
- Latest 990 filing
- Form 990-PF, 2025 View filing
Data from IRS Form 990-PF, 2025; updated September 2026.
Who Mattis Family Foundation funds
How this funder distributes its grants
Top Recipients
Top 8 recipients in 2025
The largest 2025 recipient was Greenwich Country Day School ($100K). Together the top 8 received $280K.
Grant Size Distribution
51 grants across all recorded years
The most common grant size was under $50K: 44 grants of 51 (86%).
Geographic Focus
Where this funder awards grants
Grant Distribution by State
Share of 2025 grant dollars across all 8 itemized grants.
Cities
How Mattis Family Foundation gives
- Giving held roughly steady from 2022 to 2025 (+14%). Method
- In 2025 it paid out 167% 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 $175K (2023) to $280K (2025). In 2025 it made 8 grants totaling $280K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Greenwich Country Day School Greenwich, CT | Education | $100,000 |
| Eagle Hill School Greenwich, CT | Education | $80,000 |
| Kripalu Center for Yoga & Health Stockbridge, MA | Spiritual Development | $50,000 |
| Burning Man Project San Francisco, CA | Art, Music and Innovation | $20,000 |
| Greenwich Library Greenwich, CT | Education & Community Outreach Programs | $10,000 |
| Neighbor to Neighbor Greenwich, CT | Food Bank | $10,000 |
| Bruce Museum Greenwich, CT | Education, Culture, Art | $5,000 |
| Greenwich Historical Society Cos Cob, CT | Education | $5,000 |
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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 | $3,445,607 | $199,404 | $311,386 | $280,000 | 8 | $283,122 | $171,140 | $169,586 |
| 2024 | $3,272,811 | $135,329 | $245,254 | $215,000 | 10 | $218,064 | $102,933 | $164,893 |
| 2023 | $3,077,401 | $102,226 | $212,290 | $175,000 | 12 | $177,844 | $65,654 | $149,674 |
| 2022 | $2,910,640 | $35,183 | $280,879 | $245,000 | 10 | $248,427 | $25,849 | $156,328 |
| 2021 | $3,701,352 | $678,540 | $279,825 | $255,000 | 11 | $257,350 | $553,388 | $155,763 |
| 2020 | $3,219,581 | $50,967 | $263,366 | $242,000 | 10 | — | $29,601 | $106,107 |
Under IRS private-foundation payout rules, Mattis Family Foundation reported a distributable amount of $170K for 2025 — the minimum it must pay out in qualifying distributions.
Leadership & Key People
Officers and directors from IRS filings
Mattis Family Foundation's 2025 filing lists 2 officers; none of the 2 officers listed in 2025 report compensation.
Officers on the 2025 filing
Kathyrn Mattis
Trustee
On filings since 2020
0.3 hrs/week
No compensation reported
Peter Mattis
Trustee
On filings since 2020
0.3 hrs/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 Mattis Family Foundation
How much does Mattis Family Foundation give each year?
Mattis Family Foundation gave $280K across 8 grants in 2025, according to its 2025 IRS Form 990-PF. In 2024 it gave $215K across 10 grants.
What is Mattis Family Foundation's typical grant size?
Mattis Family Foundation's median grant in 2025 was $15,000, and its average grant was $35,000, across 8 grants on its 2025 IRS Form 990-PF.
Where does Mattis Family Foundation give grants?
Mattis Family Foundation gives mostly in Connecticut: 75% of the grant dollars itemized on its 2025 IRS Form 990-PF went to recipients there. The next largest states were Massachusetts (18%) and California (7%). The most frequent recipient cities were Greenwich, CT (5 grants).
Does Mattis Family Foundation give general operating support?
Not in 2025: none of the 8 grants with a stated purpose on Mattis Family Foundation's 2025 IRS Form 990-PF were described as general or operating support. Recurring purposes include "Education" (3 grants).
Who are Mattis Family Foundation's largest grantees?
Mattis Family Foundation's largest 2025 grantees include Greenwich Country Day School ($100,000), Eagle Hill School ($80,000) and Kripalu Center for Yoga & Health ($50,000), according to its 2025 IRS Form 990-PF. Together they received 82% of its itemized 2025 grant dollars.
How large is Mattis Family Foundation?
Mattis Family Foundation reported $3.4M in total assets on its 2025 IRS Form 990-PF. It paid out $283K in qualifying distributions that year, against a required minimum of $170K (roughly 5% of its investment assets).
What is Mattis Family Foundation's EIN?
Mattis Family Foundation's EIN (Employer Identification Number) is 20-3538795. IRS Form 990 filing data is available on this page for 2020–2025.
Data last updated September 2026. Sourced from IRS Form 990-PF filings.
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 15, 2026)
- IRS filings on file for fiscal years 2020–2024
Live grants for the work Mattis Family Foundation funds
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