Private Foundation

WISSNER-SLIVKA FOUNDATION

WISSNER-SLIVKA FOUNDATION is a Private Foundation headquartered in CLYDE HILL, WA. Financial data from the 2025 filing: $65K revenue, $7K expenses, $1.6M total assets. IRS filings disclose 34 grants awarded by this foundation, totaling roughly $2.0M.

EIN: 916458451 CLYDE HILL, WA Private Grantmaking Foundations NTEE: T20 Latest filing: 2025
Total Revenue$65K
Total Expenses$7K
Total Assets$1.6M
Grants Given34
Grant Total$2.0M
Filing Years2021–2025

Sample Grants Given

KINDERING CENTER
BELLEVUE, WA · 2025
GENERAL SUPPORT
$1,000
SEATTLE CHILDRENS FOUNDATION
SEATTLE, WA · 2024
GRANT TOWARDS OPTIDES POST-DOC FELLOWSHIP
$100,000
KINDERING CENTER
BELLEVUE, WA · 2024
GENERAL SUPPORT
$31,000
OVERLAKE HOSPITAL FOUNDATION
BELLEVUE, WA · 2024
GENERAL SUPPORT
$15,000
OVERLAKE HOSPITAL FOUNDATION
BELLEVUE, WA · 2023
ADVANCING CARE TOGETHER CAMPAIGN
$250,000

Showing up to 5 of 34 total records — full history available with membership.

Officers & Directors

TRUSTEE Benjamin W Slivka
TRUSTEE Lauren Slivka
TRUSTEE Lisa Wissner-Slivka
TRUSTEE Max Slivka
TRUSTEE Nathaniel Slivka

Officer compensation and complete director data available with membership.

Top Grant Purposes

PROJECT FUTURECARE
$443,025 3 grants
PEDIATRIC ONCOLOGY
$300,000 2 grants
ADVANCING CARE TOGETHER CAMPAIGN
$250,000 1 grant
SUPPORT OF JIM OLSEN LAB
$200,000 2 grants
GENERAL SUPPORT
$192,500 16 grants

Financial Trends

Year Revenue Expenses Assets
2025 $65K $7K $1.6M
2024 $78K $153K $1.5M
2023 $82K $258K $1.6M
2022 $32K $207K $1.9M
2021 $216 $261K $1.9M

Between 2021 and 2025, reported annual revenue grew from $216 to $65K (+30022%), with total assets most recently reported at $1.6M.

Interactive year-over-year charts and full filing details available with membership.

Grant Geography

Grants from this foundation were reported to recipients in MA, NY, RI, WA.

MANYRIWA

Full geographic grant map with state-by-state breakdown available with membership.

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Browse all nonprofits & foundations in Clyde Hill, →

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