Wissner-Slivka Foundation
Wissner-Slivka Foundation is a private foundation, based in Clyde Hill, WA. IRS filing data is available from 2019 through 2025. As of 2025, the organization holds $1.6M in total assets. In 2025, it awarded 1 grant totaling $1K. Net investment income was $63K.
Wissner-Slivka Foundation at a glance
In short: Wissner-Slivka Foundation gave $1K across 1 grant in 2025 (avg $1K), mostly in Washington. Source: 2025 IRS Form 990-PF.
- Annual giving (2025)
- $1,000
- -99.3% vs 2024
- Grants made (2025)
- 1
- -66.7% vs 2024
- Average grant
- $1,000
- -97.9% vs 2024
- Median grant
- $1,000
- Total assets
- $1,580,729
- +3.8% vs 2024
- Primary geography
- Washington (100% 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 Wissner-Slivka Foundation funds
How this funder distributes its grants
Top Recipients
Top recipient in 2025
The largest 2025 recipient was Kindering Center ($1K).
Grant Size Distribution
18 grants across all recorded years
The most common grant size was under $50K: 13 grants of 18 (72%).
Geographic Focus
Where this funder awards grants
Grant Distribution by State
Share of the 2025 grant dollars on its one itemized grant.
Cities
How Wissner-Slivka Foundation gives
- Giving fell 100% from 2022 to 2025. Method
- In 2025 it paid out 5% 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 $480K (2019). In 2025 it made 1 grant totaling $1K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Kindering Center Bellevue, WA | General Support | $1,000 |
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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 | $1,580,729 | $65,064 | $6,636 | $1,000 | 1 | $3,512 | $62,956 | $75,551 |
| 2024 | $1,522,301 | $78,078 | $152,916 | $146,000 | 3 | $148,514 | $75,972 | $74,123 |
| 2023 | $1,597,139 | $81,606 | $257,699 | $251,000 | 2 | $253,015 | $79,616 | $81,473 |
| 2022 | $1,931,966 | $32,015 | $206,988 | $201,883 | 6 | $204,450 | $30,273 | $94,495 |
| 2021 | $1,948,205 | $216 | $261,274 | $257,592 | 6 | $259,612 | — | $105,264 |
| 2020 | $2,209,263 | $1,850 | $169,415 | $165,144 | 4 | — | $167 | $114,371 |
| 2019 | $2,376,828 | $15,709 | $484,068 | $480,414 | 4 | — | $14,023 | $126,038 |
Under IRS private-foundation payout rules, Wissner-Slivka Foundation reported a distributable amount of $76K for 2025 — the minimum it must pay out in qualifying distributions.
Leadership & Key People
Officers and directors from IRS filings
Wissner-Slivka Foundation's 2025 filing lists 5 officers; none of the 5 officers listed in 2025 report compensation.
Officers on the 2025 filing
Benjamin W. Slivka
Trustee
On filings since 2019
0.8 hrs/week
No compensation reported
Lisa Wissner-Slivka
Trustee
On filings since 2019
0.8 hrs/week
No compensation reported
Max Slivka
Trustee
On filings since 2019
0.3 hrs/week
No compensation reported
Nathaniel Slivka
Trustee
On filings since 2019
0.3 hrs/week
No compensation reported
Lauren Slivka
Trustee
On filings since 2022
0.3 hrs/week
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 Wissner-Slivka Foundation
How much does Wissner-Slivka Foundation give each year?
Wissner-Slivka Foundation gave $1K across 1 grant in 2025, according to its 2025 IRS Form 990-PF. In 2024 it gave $146K across 3 grants.
How large is Wissner-Slivka Foundation?
Wissner-Slivka Foundation reported $1.6M in total assets on its 2025 IRS Form 990-PF. It paid out $4K in qualifying distributions that year, against a required minimum of $76K (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 Wissner-Slivka Foundation operate?
Wissner-Slivka Foundation has awarded grants in Massachusetts, Rhode Island, Washington.
What is Wissner-Slivka Foundation's EIN?
Wissner-Slivka Foundation's EIN (Employer Identification Number) is 91-6458451. 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 June 22, 2020)
- Added Form 990-PF for fiscal year 2025 (received by the IRS May 14, 2026)
- IRS filings on file for fiscal years 2020–2024
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