The Mattis Family Foundation
The Mattis Family Foundation is a private foundation, based in Greenwich, CT. IRS filing data is available from 2022 through 2025. As of 2025, the organization holds $337K in total assets. In 2025, it awarded 2 grants totaling $15K. Net investment income was $12K.
The Mattis Family Foundation at a glance
In short: The Mattis Family Foundation gave $15K across 2 grants in 2025 (avg $8K), mostly in Connecticut. Source: 2025 IRS Form 990-PF.
- Annual giving (2025)
- $15,000
- +50.0% vs 2024
- Grants made (2025)
- 2
- +100.0% vs 2024
- Average grant
- $7,500
- -25.0% vs 2024
- Median grant
- $7,500
- Total assets
- $336,536
- -2.1% vs 2024
- Primary geography
- Connecticut (67% 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 The Mattis Family Foundation funds
How this funder distributes its grants
Top Recipients
Top 2 recipients in 2025
The largest 2025 recipient was Eagle Hill School ($10K). Together the top 2 received $15K.
Grant Size Distribution
4 grants across all recorded years
The most common grant size was under $50K: 4 grants of 4 (100%).
Geographic Focus
Where this funder awards grants
Grant Distribution by State
Share of 2025 grant dollars across all 2 itemized grants.
States
Cities
How The Mattis Family Foundation gives
- In 2025 it paid out 94% of its IRS minimum distribution (the 5% rule). Foundations have until the end of the next year to meet it. 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 2023 to 2025, annual grant giving ranged from $5K (2023) to $15K (2025). In 2025 it made 2 grants totaling $15K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Eagle Hill School Greenwich, CT | Education | $10,000 |
| Irish Arts Center New York, NY | Art & Culture | $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 | $336,536 | $22,837 | $30,034 | $15,000 | 2 | $19,767 | $12,024 | $21,053 |
| 2024 | $343,733 | $24,193 | $32,206 | $10,000 | 1 | $15,997 | $6,547 | $20,168 |
| 2023 | $351,734 | $27,125 | $16,797 | $5,000 | 1 | $8,365 | $154,555 | $15,520 |
| 2022 | $334,578 | $341,868 | — | — | — | — | $20,725 | $2,032 |
Under IRS private-foundation payout rules, The Mattis Family Foundation reported a distributable amount of $21K for 2025 — the minimum it must pay out in qualifying distributions.
Leadership & Key People
Officers and directors from IRS filings
The Mattis Family Foundation is led by Kathryn Mattis, Chairman & Secretarty on every filing since 2022; none of the 2 officers listed in 2025 report compensation.
Officers on the 2025 filing
Kathryn Mattis
Chairman & Secretarty
On filings since 2022
0.3 hrs/week
No compensation reported
Peter Mattis
Treasurer
On filings since 2022
0.3 hrs/week
No compensation reported
Data from IRS Form 990 filings, 2022–2025. "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 The Mattis Family Foundation
How much does The Mattis Family Foundation give each year?
The Mattis Family Foundation gave $15K across 2 grants in 2025, according to its 2025 IRS Form 990-PF. In 2024 it gave $10K across 1 grant.
How large is The Mattis Family Foundation?
The Mattis Family Foundation reported $337K in total assets on its 2025 IRS Form 990-PF. It paid out $20K in qualifying distributions that year, against a required minimum of $21K (roughly 5% of its investment assets). Falling short in one year is not a violation: foundations have until the end of the next year to meet the minimum.
Where does The Mattis Family Foundation operate?
The Mattis Family Foundation has awarded grants in Connecticut, New York.
What is The Mattis Family Foundation's EIN?
The Mattis Family Foundation's EIN (Employer Identification Number) is 35-2765948. IRS Form 990 filing data is available on this page for 2022–2025.
Data last updated September 2026. Sourced from IRS Form 990-PF filings.
Data update history
(5)
When this profile's IRS filing data changed on Grantable
- Updated Form 990-PF for fiscal year 2022 (received by the IRS November 14, 2023)
- Updated Form 990-PF for fiscal year 2023 (received by the IRS November 12, 2024)
- Updated Form 990-PF for fiscal year 2024 (received by the IRS September 9, 2025)
- Added Form 990-PF for fiscal year 2025 (received by the IRS May 15, 2026)
- IRS filings on file for fiscal years 2022–2024
Explore Open Grants
Browse active grant opportunities in The Mattis Family Foundation's focus areas in our free grants database
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