WINIARSKI FAMILY FOUNDATION
Data sourced from IRS 990-PF public filings
Supports healthcare and educational institutions in Napa, CA, including significant funding for medical centers and universities.
WINIARSKI FAMILY FOUNDATION has 126 grants on file funding 58 organizations. Giving increased from $14,206,820 in 2024 to $43,067,701 in 2025. Reported assets: $1,658,682.
Total Assets
$1,658,682
Grants (Last Year)
$43,067,701
Total Grants on File
126
Recipients Funded
58
Giving History
| Year | Total Granted | Grants Made | Avg Grant |
|---|---|---|---|
| 2025 | $43,067,701 | 3 | $14,355,900 |
| 2024 | $14,206,820 | 6 | $2,367,803 |
| 2023 | $3,970,514 | 28 | $141,804 |
| 2022 | $929,344 | 41 | $22,667 |
| 2021 | $949,587 | 48 | $19,783 |
Top Grant Recipients
SANTA FE, NM
WASHINGTON, DC
DAVIS, CA
CHICAGO, IL
DAVIS, CA
Chicago, IL
Showing top 10 of 126 grants on file.
Officers & Trustees
From 2025 IRS 990-PF filing (data available for 14 filing years)
THOMAS SUNIVILLE
CFO / DIRECTOR
STACY MADIGAN
SECRETARY / DIRECTOR
GREG BENNETT
PRESIDENT / DIRECTOR
IRS Filing History
WINIARSKI FAMILY FOUNDATION has IRS 990-PF filings on record for 14 years, spanning 2012 to 2025.
Frequently Asked Questions
Other Foundations in California
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