Winiarski Family Foundation
Grantmaking foundation in Napa, California · EIN 26-0474242
- California
- Napa
- Philanthropy, Voluntarism and Grantmaking Foundations
- Philanthropy, Voluntarism and Grantmaking Foundations in California
- Grants itemized on the 990
- $43MTax year 2025
- Grants made
- 3Tax year 2025
- Total assets
- $14MLatest reported
- Latest IRS filing
- 2025Form 990 / 990-PF
Giving by year
Totals by tax year, rounded to two significant figures. Years without a reported total show the sum of grants itemized on the filing.
Top recipients
| Recipient | Amount | Tax year |
|---|---|---|
| St Johns College | $38M | 2025 |
| Smithsonian Institution | $3.1M | 2025 |
| Uc Davis Foundation | $2.4M | 2025 |
Amounts are rounded. The full grantee list (3 grants in 2025) is available with a free account.
See the full profile. All grants with amounts and years, board and officers, contact details, giving patterns and your organization's fit score are available with a free GrantAuthority account.
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Source: IRS Form 990 and 990-PF filings, tax year 2025. Also see this organization on ProPublica Nonprofit Explorer.