The Vadasz Family Foundation
Invitation OnlySonoma, California · EIN 77-0469457 · Private foundation
Half of its grants to organizations were between $5,000 and $25,000.
How to apply
On its return for tax year 2024 the foundation checked the box saying it only makes contributions to preselected charitable organizations and does not accept unsolicited requests for funds.
What it funds
Share of grant lines on the latest return, classified from the purpose each grant states.
Where it gives
2% of grants went outside California.
Grants paid in tax year 2024
| Recipient | Location | Purpose | Amount |
|---|---|---|---|
| Sonoma Valley Hospital Foundation | Sonoma, CA | General Support | $150,000 |
| Sonoma Valley Education Foundation | Sonoma, CA | General Support | $143,000 |
| Transcendence Theatre Company | Sonoma, CA | General Support | $132,000 |
| Sonoma Valley Education Foundation | Sonoma, CA | General Support | $120,000 |
| Boys and Girls Club of Sonoma Valle | Sonoma, CA | Support for Teen Services | $100,000 |
| Sonoma Valley Mentoring Alliance | Sonoma, CA | General Support | $70,000 |
| Sonoma Community Center | Sonoma, CA | General Support | $40,000 |
| Sonoma Immigrant Services | Sonoma, CA | General Support | $30,000 |
| Sonoma Valley Museum of Art | Sonoma, CA | General Support | $25,000 |
| Sonoma Valley Education Foundation | Sonoma, CA | Summer Math Program | $23,000 |
| Boys and Girls Club of Sonoma Valle | Sonoma, CA | Support for Fundraising Event | $20,000 |
| UCSF Foundation Cardiology Council | San Francisco, CA | General Support | $15,000 |
| Sonoma Valley Museum of Art | Sonoma, CA | General Support | $10,000 |
| La Luz Center | Sonoma, CA | Fundraising Support | $10,000 |
| Sonoma Community Center | Sonoma, CA | Support for fundraising event | $10,000 |
| Sonoma Plein Air Foundation | Sonoma, CA | General Support | $10,000 |
| Transcendence Theatre Company | Sonoma, CA | General Support | $10,000 |
| Sonoma Valley Museum of Art | Sonoma, CA | Fundraising Support | $10,000 |
| Sonoma Land Trust | Santa Rosa, CA | General Support | $10,000 |
| Sonoma Community Center | Sonoma, CA | General Support | $10,000 |
| UCSF Foundation Cardiology Council | San Francisco, CA | General Support | $10,000 |
| UCSF Foundation | San Francisco, CA | General Support | $10,000 |
| Sonoma Valley Education Foundation | Sonoma, CA | General Support | $10,000 |
| California College of the Arts | San Francisco, CA | General Support | $10,000 |
| Sonoma Plein Air Foundation | Sonoma, CA | Fundraising Support | $8,800 |
| SSU Academic Foundation | Rohnert Park, CA | Support for Green Music Center | $5,000 |
| SSU Academic Foundation | Rohnert Park, CA | General Support | $5,000 |
| San Francisco Opera | San Francisco, CA | General Support | $5,000 |
| Transcendence Theatre Company | Sonoma, CA | General Support | $5,000 |
| Sonoma Valley Hospital Foundation | Sonoma, CA | General Support | $4,700 |
| Sonoma Valley Hospital Foundation | Sonoma, CA | Books Donation | $2,453 |
| Sonoma Valley Education Foundation | Sonoma, CA | General Support | $1,000 |
| Commonwealth Club of California | San Francisco, CA | Event sponsorship | $1,000 |
| Science History Institute | Philadelphia, PA | General Support | $500 |
The return also lists 20 grants to individuals ($561,940). We do not publish the names of individual recipients.
Giving by year
| Tax year | Grants paid | Grant lines |
|---|---|---|
| 2024 | $1,588,393 | 54 |
| 2023 | $1,523,317 | 65 |
| 2022 | $1,487,069 | 48 |
Sources
- IRS Form 990-PF, tax year 2024, filed May 1, 2026 - IRS e-file batch, object ID 202601219349100925
- IRS Tax Exempt Organization Search for EIN 77-0469457
- Profile updated Nov 5, 2026
Facts on this page come from the foundation's own IRS Form 990-PF filings as published by the IRS. Grantvello does not know whether a foundation is accepting proposals right now: a past grant is not an open opportunity. Always confirm current guidelines with the funder before applying.