Private Foundation

MATTAINI FAMILY FOUNDATION

MATTAINI FAMILY FOUNDATION is a private foundation categorized as Private Foundation based in BELLEVUE, WA. Its most recent IRS filing (2025) reports revenue of $320K, expenses of $759K. Imperigo tracks 112 reported grants from this foundation totaling approximately $2.9M.

EIN: 911938648 BELLEVUE, WA Latest filing: 2025
Total Revenue$320K
Total Expenses$759K
Grants Given112
Grant Total$2.9M
Filing Years2021–2025

Sample Grants Given

VIRGINIA MASON FOUNDATION
SEATTLE, WA · 2025
SAME
$300,000
ST JUDES RESEARCH HOSPITAL
MEMPHIS, TN · 2025
SAME
$100,000
FRED HUTCHINSON CANCER RESEARCH
SEATTLE, WA · 2025
SAME
$100,000
ALZHEIMER'S ASSOC
SEATTLE, WA · 2025
TO SUPPORT GENERAL CHARITABLE ACTIVITIES CARRIED ON BY EACH CHARITABLE ORGANIZATION SUCH AS RELIGIOUS, SCIENTIFIC, LITERARY, AND EDUCATIONAL ACTIVITIES. ALL CHARITABLE ORGANIZATIONS WHO RECEIVE GRANTS AND/OR CONTRIBUTONS FROM THE TAXPAYER ARE TAX EXEMPT ORGANIZATIONS QUALIFIED UNDER SECTION 501(C)(3) OF THE CODE.
$100,000
SOUND GENERATIONS
SEATTLE, WA · 2025
SAME
$40,000

Showing up to 5 of 112 total records — full history available with membership.

Officers & Directors

President Barry Mattaini
Vice President Nancy Mattaini

Officer compensation and complete director data available with membership.

Top Grant Purposes

SAME
$2,683,950 103 grants
TO SUPPORT GENERAL CHARITABLE ACTIVITIES CARRIED ON BY EACH CHARITABLE ORGANIZATION SUCH AS RELIGIOUS, SCIENTIFIC, LITERARY, AND EDUCATIONAL ACTIVITIES. ALL CHARITABLE ORGANIZATIONS WHO RECEIVE GRANTS AND/OR CONTRIBUTONS FROM THE TAXPAYER ARE TAX EXEMPT ORGANIZATIONS QUALIFIED UNDER SECTION 501(C)(3) OF THE CODE.
$229,500 9 grants

Financial Trends

Year Revenue Expenses Assets
2025 $320K $759K —
2024 $44K $123K $439K
2023 $14K $115K $519K
2022 $63K $147K $620K
2021 $522K $889K $703K

Between 2021 and 2025, reported annual revenue declined from $522K to $320K (-39%).

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

Grant Geography

Grants from this foundation were reported to recipients in CA, DC, IL, NH, TN, VA, and 1 other state.

CADCILNHTNVAWA

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

See the full picture for MATTAINI FAMILY FOUNDATION

Complete financials, all 112 grant records, officer compensation, year-over-year trend charts, a geographic grant map, and data exports — across 498,000+ organizations.

Full Financial History Complete Grant Activity Officer Compensation Year-over-Year Charts Geographic Grant Map Data Exports
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