The Endurance Foundation
The Endurance Foundation is a private foundation, based in Boston, MA. IRS filing data is available from 2020 through 2025. As of 2025, the organization holds $1.7M in total assets. In 2025, it awarded 5 grants totaling $83K. Net investment income was $228K.
The Endurance Foundation at a glance
In short: The Endurance Foundation gave $83K across 5 grants in 2025 (avg $17K), mostly in Massachusetts. Source: 2025 IRS Form 990-PF.
- Annual giving (2025)
- $82,771
- +3.5% vs 2024
- Grants made (2025)
- 5
- +25.0% vs 2024
- Average grant
- $16,554
- -17.2% vs 2024
- Median grant
- $5,000
- Total assets
- $1,658,309
- +6.8% vs 2024
- Primary geography
- Massachusetts (76% 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 Endurance Foundation funds
How this funder distributes its grants
Top Recipients
Top 5 recipients in 2025
The largest 2025 recipient was Immigration Services and Legal Advocacy ($50K). Together the top 5 received $83K.
Grant Size Distribution
23 grants across all recorded years
The most common grant size was under $50K: 22 grants of 23 (96%).
Geographic Focus
Where this funder awards grants
Grant Distribution by State
Share of 2025 grant dollars across all 5 itemized grants.
States
Cities
How The Endurance Foundation gives
- Giving held roughly steady from 2022 to 2025 (−11%). Method
- In 2025 it paid out 95% 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 2021 to 2025, annual grant giving ranged from $44K (2021) to $93K (2022). In 2025 it made 5 grants totaling $83K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Immigration Services and Legal Advocacy Boston, MA | General Charitable Purposes | $50,000 |
| Young Center for Immigrant Children Chicago, IL | General Charitable Purposes | $20,000 |
| Woods Hole Community Association Woods Hole, MA | General Charitable Purposes | $5,000 |
| Woods Hole Research Center Falmouth, MA | Scientific and Educational Research | $4,271 |
| Pine Street Inn Boston, MA | Innovative, solution-oriented programs to help homeless individuals move beyond shelter | $3,500 |
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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 |
|---|---|---|---|---|---|---|---|---|
| 2025 | $1,658,309 | $259,499 | $118,476 | $82,771 | 5 | $82,771 | $227,856 | $87,103 |
| 2024 | $1,553,396 | $197,943 | $111,523 | $80,000 | 4 | $80,000 | $166,448 | $83,658 |
| 2023 | $1,427,978 | $30,103 | $115,010 | $86,000 | 5 | $86,000 | $5,865 | $79,266 |
| 2022 | $1,524,278 | $75,253 | $121,050 | $93,000 | 5 | $93,000 | $47,203 | $86,177 |
| 2021 | $1,577,636 | $127,673 | $77,082 | $44,000 | 4 | $44,000 | $94,591 | $92,366 |
| 2020 | $1,527,045 | $90,700 | $26,846 | — | — | — | $63,854 | $74,869 |
Under IRS private-foundation payout rules, The Endurance Foundation reported a distributable amount of $87K for 2025 — the minimum it must pay out in qualifying distributions.
Leadership & Key People
Officers and directors from IRS filings
The Endurance Foundation is led by Matthew A. Berlin, Trustee on every filing since 2020 — the only officer listed, and uncompensated.
Officers on the 2025 filing
Matthew A. Berlin
Trustee
On filings since 2020
0.5 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 The Endurance Foundation
How much does The Endurance Foundation give each year?
The Endurance Foundation gave $83K across 5 grants in 2025, according to its 2025 IRS Form 990-PF. In 2024 it gave $80K across 4 grants.
What is The Endurance Foundation's typical grant size?
The Endurance Foundation's median grant in 2025 was $5,000, and its average grant was $16,554, across 5 grants on its 2025 IRS Form 990-PF.
Where does The Endurance Foundation give grants?
The Endurance Foundation gives mostly in Massachusetts: 76% of the grant dollars itemized on its 2025 IRS Form 990-PF went to recipients there. The next largest state was Illinois (24%). The most frequent recipient cities were Boston, MA (2 grants).
Does The Endurance Foundation give general operating support?
Yes: 60% of The Endurance Foundation's 2025 grants with a stated purpose (3 of 5) were for general or operating support, per its 2025 IRS Form 990-PF.
Who are The Endurance Foundation's largest grantees?
The Endurance Foundation's largest 2025 grantees include Immigration Services and Legal Advocacy ($50,000), Young Center for Immigrant Children ($20,000) and Woods Hole Community Association ($5,000), according to its 2025 IRS Form 990-PF. Together they received 91% of its itemized 2025 grant dollars.
How large is The Endurance Foundation?
The Endurance Foundation reported $1.7M in total assets on its 2025 IRS Form 990-PF. It paid out $83K in qualifying distributions that year, against a required minimum of $87K (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.
What is The Endurance Foundation's EIN?
The Endurance Foundation's EIN (Employer Identification Number) is 35-2435568. 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
Explore Open Grants
Browse active grant opportunities in The Endurance Foundation's focus areas in our free grants database
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