The Sonneborn Foundation Inc
The Sonneborn Foundation Inc is a private foundation focused on Arts and culture, based in Bethesda, MD. IRS filing data is available from 2019 through 2025. As of 2025, the organization holds $761K in total assets. In 2025, it awarded 2 grants totaling $1K. Net investment income was $37K.
The Sonneborn Foundation Inc at a glance
In short: The Sonneborn Foundation Inc gave $1K across 2 grants in 2025 (avg $500), mostly in New York. Source: 2025 IRS Form 990-PF.
- Annual giving (2025)
- $1,000
- -98.9% vs 2024
- Grants made (2025)
- 2
- -60.0% vs 2024
- Average grant
- $500
- -97.2% vs 2024
- Median grant
- $500
- Total assets
- $761,285
- +4.9% vs 2024
- Primary geography
- New York (50% 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 Sonneborn Foundation Inc funds
How this funder distributes its grants
Top Recipients
Top 2 recipients in 2025
The largest 2025 recipient was Givedirectly Inc ($500). Together the top 2 received $1K.
Grant Size Distribution
15 grants across all recorded years
The most common grant size was under $50K: 14 grants of 15 (93%).
Geographic Focus
Where this funder awards grants
Grant Distribution by State
Share of 2025 grant dollars across all 2 itemized grants.
Cities
How The Sonneborn Foundation Inc gives
- Giving fell 87% from 2022 to 2025. Method
- In 2025 it paid out 3% 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 2019 to 2025, annual grant giving ranged from $1K (2025) to $88K (2024). In 2025 it made 2 grants totaling $1K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Givedirectly Inc New York, NY | General | $500 |
| The Fistula Foundation San Jose, CA | General | $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 | $761,285 | $37,276 | $1,000 | $1,000 | 2 | $1,000 | $37,276 | $37,000 |
| 2024 | $725,509 | $37,334 | $88,250 | $88,250 | 5 | $88,250 | $37,334 | $35,202 |
| 2023 | $776,425 | $36,000 | $7,000 | $7,000 | 4 | $7,000 | $36,000 | $37,738 |
| 2022 | $746,299 | $37,354 | $7,500 | $7,500 | 4 | $7,500 | $37,354 | $36,171 |
| 2021 | $714,245 | $38,612 | — | — | — | — | $38,612 | $34,617 |
| 2020 | $678,757 | $64,263 | $205,780 | $5,250 | 2 | — | — | $32,469 |
| 2019 | $800,966 | $100,302 | $181,399 | $4,500 | 1 | — | — | $39,464 |
Under IRS private-foundation payout rules, The Sonneborn Foundation Inc reported a distributable amount of $37K for 2025 — the minimum it must pay out in qualifying distributions.
Leadership & Key People
Officers and directors from IRS filings
The Sonneborn Foundation Inc is led by Mark Neumann, President & Treasurer on every filing since 2019; none of the 3 officers listed in 2025 report compensation.
Officers on the 2025 filing
Mark Neumann
President & Treasurer
On filings since 2019
0.5 hrs/week
No compensation reported
Patti Neumann
Secretary
On filings since 2019
No compensation reported
Robin Neumann
Officer
On filings since 2019
No compensation reported
Data from IRS Form 990 filings, 2019–2025. "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 Sonneborn Foundation Inc
How much does The Sonneborn Foundation Inc give each year?
The Sonneborn Foundation Inc gave $1K across 2 grants in 2025, according to its 2025 IRS Form 990-PF. In 2024 it gave $88K across 5 grants.
How large is The Sonneborn Foundation Inc?
The Sonneborn Foundation Inc reported $761K in total assets on its 2025 IRS Form 990-PF. It paid out $1K in qualifying distributions that year, against a required minimum of $37K (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 Sonneborn Foundation Inc?
The Sonneborn Foundation Inc is a private foundation focused on Arts and culture, based in Bethesda, MD. It holds $761K in total assets as of 2025.
Where does The Sonneborn Foundation Inc operate?
The Sonneborn Foundation Inc has awarded grants in California, Maryland, New York, Pennsylvania.
What is The Sonneborn Foundation Inc's EIN?
The Sonneborn Foundation Inc's EIN (Employer Identification Number) is 91-1987558. IRS Form 990 filing data is available on this page for 2019–2025.
Data last updated September 2026. Sourced from IRS Form 990-PF filings.
Data update history
(3)
When this profile's IRS filing data changed on Grantable
- Added Form 990-PF for fiscal year 2019 (received by the IRS May 14, 2020)
- Added Form 990-PF for fiscal year 2025 (received by the IRS May 15, 2026)
- IRS filings on file for fiscal years 2020–2024
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