Private Foundation

The Vadasz Family Foundation

The Vadasz Family Foundation is a private foundation categorized as Private Foundation based in Sonoma, CA. Its most recent IRS filing (2025) reports revenue of $778K, expenses of $1.9M, total assets of $9.4M. Imperigo tracks 465 reported grants from this foundation totaling approximately $15.9M.

EIN: 770469457 Sonoma, CA Latest filing: 2025

Total Revenue$778K

Total Expenses$1.9M

Total Assets$9.4M

Grants Given465

Grant Total$15.9M

Filing Years2021–2025

Sample Grants Given

Sonoma Family Meal

Petaluma, CA · 2024

General Support

$150,000

Sonoma Valley Hospital Foundation

Sonoma, CA · 2024

General Support

$150,000

Sonoma Valley Education Foundation

Sonoma, CA · 2024

General Support

$143,000

Transcendence Theatre Company

Sonoma, CA · 2024

General Support

$132,000

Sonoma Valley Education Foundation

Sonoma, CA · 2024

General Support

$120,000

Showing up to 5 of 465 total records — full history available with membership.

Officers & Directors

Director David Vadasz

Dir./Treas. Judy K Vadasz

Dir./Pres. Les L Vadasz

Foundation Mgr. Meghan O Banyon

Officer compensation and complete director data available with membership.

Top Grant Purposes

General Support

$8,760,001 325 grants

Support for Capital Campaign

$2,000,000 2 grants

Vadasz Doctoral Fellowships

$1,000,000 1 grant

Support for News Radio

$525,000 3 grants

General Support $485,000; Support for Womens Health Syposium $5,000

$490,000 1 grant

Financial Trends

Year	Revenue	Expenses	Assets
2025	$778K	$1.9M	$9.4M
2024	$720K	$1.8M	$9.1M
2023	$686K	$1.8M	$11.6M
2022	$1.2M	$1.5M	$11.8M
2021	$1.1M	$1.9M	$15.2M

Between 2021 and 2025, reported annual revenue declined from $1.1M to $778K (-30%), with total assets most recently reported at $9.4M.

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, MA, MD, MN, NE, and 4 other states.

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

See the full picture for The Vadasz Family Foundation

Complete financials, all 465 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