Nonprofit · EIN 26-0474242
WINIARSKI FAMILY FOUNDATION
Tax-exempt · YOUNTVILLE, CA 94599
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990-PF | $42,977,618 | $43,104,918 | -$127,300 | $1,658,682 | $0 | $1,658,682 |
| December 31, 2024 | 990-PF | $2,450,508 | $14,291,128 | -$11,840,620 | $1,803,226 | $17,244 | $1,785,982 |
| December 31, 2023 | 990-PF | $727,076 | $4,148,275 | -$3,421,199 | $13,626,602 | $0 | $13,626,602 |
Financial details: 990-PF for the year ended December 31, 2025
Revenue
- Contributions, gifts and grants
- $42,893,862
- Dividends
- $83,726
- Net gain from sales of assets
- $30
Expenses
- Grants and similar amounts paid
- $43,067,701
- Compensation of officers, directors and key employees
- $0
- Disbursements for charitable purposes
- $43,087,360
- Excise tax on investment income
- $944
Balance sheet and other
- Total assets, start of year
- $1,803,226
- Total assets, end of year
- $1,658,682
- Total liabilities, end of year
- $0
- Net assets, end of year
- $1,658,682
- Fair market value of assets
- $1,658,682
- Qualifying distributions
- $43,087,360
- Net investment income
- $83,756
From the e-filed returns the IRS publishes as XML (latest three processing years; amended returns replace the original). PDF copies at the IRS.
Officers, directors and key employees
As listed on the 990-PF for the year ended December 31, 2025, highest compensation first.
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| GREG BENNETT 5768 SILVERADO TRAIL, NAPA, CA 94558 | PRESIDENT / DIRECTOR | 1 | $0 |
| STACY MADIGAN 5768 SILVERADO TRAIL, NAPA, CA 94558 | SECRETARY / DIRECTOR | 1 | $0 |
| THOMAS SUNIVILLE 5768 SILVERADO TRAIL, NAPA, CA 94558 | CFO / DIRECTOR | 1 | $0 |
990-PF for the year ended December 31, 2024: 3 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| GREG BENNETT 5766 SILVERADO TRAIL, NAPA, CA 94558 | PRESIDENT / DIRECTOR | 1 | $0 |
| STACY MADIGAN 5766 SILVERADO TRAIL, NAPA, CA 94558 | SECRETARY / DIRECTOR | 1 | $0 |
| THOMAS SUNIVILLE 5766 SILVERADO TRAIL, NAPA, CA 94558 | CFO / DIRECTOR | 1 | $0 |
990-PF for the year ended December 31, 2023: 4 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| WARREN WINIARSKI 5766 SILVERADO TRAIL, NAPA, CA 94558 | PRESIDENT | 10 | $0 |
| GREG BENNETT 5766 SILVERADO TRAIL, NAPA, CA 94558 | DIRECTOR | 1 | $0 |
| STACY MADIGAN 5766 SILVERADO TRAIL, NAPA, CA 94558 | DIRECTOR | 1 | $0 |
| THOMAS SUNIVILLE 5766 SILVERADO TRAIL, NAPA, CA 94558 | DIRECTOR | 1 | $0 |
Address and contacts
- Address (IRS master file)
- PO BOX 3327, YOUNTVILLE, CA 94599-3327
- In care of
- % WARREN WINIARSKI
- Signed the 990-PF
- GREG BENNETT, PRESIDENT
- Phone
- (707) 224-8822
- Return prepared by
- G & J SEIBERLICH & CO LLP
California records
California keeps its own records of charities and corporations. Search them by EIN 26-0474242 or by the name WINIARSKI FAMILY FOUNDATION.
- Attorney General, Registry of Charities and Fundraisers
- Registration status and filed reports (CT-TR-1, RRF-1)
- Secretary of State, bizfile Online
- Corporation status, entity number, agent for service
- Franchise Tax Board
- Entity status letter (state tax exemption, good standing)
What it must file and when
IRS records say it files Form 990-PF. Private foundations file every year. Its accounting year ends in December, so each return is due on the 15th day of the 5th month after that.
| Tax year | Year ended | Due | IRS public records |
|---|---|---|---|
| 2025 | December 31, 2025 | May 15, 2026 | 990-PF on file |
| 2024 | December 31, 2024 | May 15, 2025 | 990-PF on file |
| 2023 | December 31, 2023 | May 15, 2024 | 990-PF on file |
IRS record
- EIN
- 26-0474242
- Tax-exempt status
- 501(c)(3): Charitable, religious, educational or scientific organization
- Foundation status
- Private non-operating foundation
- Donations deductible (Pub 78)
- Private foundation, 30% limit
- Exempt since
- 2007
- Accounting year ends
- December
- Files
- Form 990-PF
- Category (NTEE)
- Philanthropy, voluntarism and grantmaking foundations (T22)
- Assets (IRS master file)
- $1,658,682
- Income (IRS master file)
- $42,977,618
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990-PF | December 2025 | $42,977,618 | $43,104,918 | $1,658,682 | IRS |
| 990-PF | December 2024 | $2,450,508 | $14,291,128 | $1,803,226 | XML |
| 990-PF | December 2023 | $727,076 | $4,148,275 | $13,626,602 | XML |
| 990-PF | December 2022 | – | – | – | IRS |
| 990-PF | December 2021 | – | – | – | IRS |
| 990-PF | December 2020 | – | – | – | IRS |
| 990-PF | December 2018 | – | – | – | IRS |
| 990-PF | December 2017 | – | – | – | IRS |
990-N: the IRS bulk file holds only the latest e-Postcard per organization; earlier years come from archived copies of that file since 2020 and can have gaps (the IRS e-Postcard search lists every one). 990, 990-EZ, 990-PF, 990-T: every e-filed return in the IRS e-file index since 2019; XML for the latest three processing years, amounts from the IRS Statistics of Income extracts before that. PDF copies and determination letters at the IRS (search EIN 26-0474242).
Questions about WINIARSKI FAMILY FOUNDATION
- What is the EIN of WINIARSKI FAMILY FOUNDATION?
- The employer identification number (EIN) of WINIARSKI FAMILY FOUNDATION is 26-0474242.
- Is WINIARSKI FAMILY FOUNDATION tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2007.
- Are donations to WINIARSKI FAMILY FOUNDATION tax-deductible?
- Yes. It is listed in IRS Publication 78 (Private foundation, 30% limit).
- Which annual return does WINIARSKI FAMILY FOUNDATION file?
- Form 990-PF. Private foundations file every year.
- When is the next return of WINIARSKI FAMILY FOUNDATION due?
- The return for tax year 2026 (the year ending December 31, 2026) is due May 17, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
- When did WINIARSKI FAMILY FOUNDATION last file with the IRS?
- The latest return in the IRS public files is the 990-PF for the year ended December 2025.
- Who are the officers and directors of WINIARSKI FAMILY FOUNDATION?
- The 990-PF for the year ended December 31, 2025 lists 3 people; 0 received compensation from the organization.
- How much revenue does WINIARSKI FAMILY FOUNDATION have?
- On its 990-PF for the year ended December 31, 2025 it reported revenue of $42,977,618, expenses of $43,104,918 and total assets of $1,658,682 at year end.
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