Data / Nonprofits / California / Tiburon / Philanthropy, voluntarism and grantmaking foundations
Philanthropy, voluntarism and grantmaking foundations nonprofits in Tiburon, CA: 21 registered with the IRS
21 philanthropy, voluntarism and grantmaking foundations nonprofits are registered with the IRS in Tiburon, CA, 21 of them 501(c)(3) charities; the 3 that report revenue took in $726,193. The largest by revenue: Ginungagap Foundation ($534,172), Rotary Club of Tiburon Sunset Foundation ($103,387), Tiburon Peninsula Foundation ($88,634).
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Every organization, largest by revenue first
| Organization | Type | Since | Revenue | Assets | Filing |
|---|---|---|---|---|---|
| Ginungagap Foundation | 501(c)(3) | 2004 | $534,172 | $4.9 million | 2024-12 |
| Rotary Club of Tiburon Sunset Foundation | 501(c)(3) | 2000 | $103,387 | $299,953 | 2026-06 |
| Tiburon Peninsula Foundation | 501(c)(3) | 1969 | $88,634 | $591,152 | 2024-12 |
| 5 Ryan Foundation | 501(c)(3) | 2018 | $6 million | 2025-12 | |
| Barn Road Foundation | 501(c)(3) | 2017 | $45.2 million | 2025-06 | |
| Cadieux Martin Foundation | 501(c)(3) | 1996 | $305,024 | 2025-12 | |
| Carolyn and Peter Friedman Foundation | 501(c)(3) | 2019 | $3.3 million | 2024-12 | |
| Chaiken Family Foundation III | 501(c)(3) | 2025 | $30.3 million | 2025-06 | |
| Charity Enablers Foundation | 501(c)(3) | 2000 | $92,688 | 2025-12 | |
| Evan and Tracy Segal Familyfoundation | 501(c)(3) | 2006 | $539,380 | 2025-06 | |
| Fontana Foundation | 501(c)(3) | 2003 | $93,455 | 2025-12 | |
| Frances K and Charles D Field Foundation | 501(c)(3) | 2003 | $13.4 million | 2025-12 | |
| Grey Family Foundation | 501(c)(3) | 1996 | $3.3 million | 2025-12 | |
| Hilltop Group Charitable Foundation | 501(c)(3) | 2004 | $5.4 million | 2025-12 | |
| Jon & Darla Fisher Foundation Jon Fisher | 501(c)(3) | 2009 | $115 | 2024-12 | |
| Seidel Family Foundation for Better Vision Inc | 501(c)(3) | 2004 | $1,493 | 2024-12 | |
| Skywords Family Foundation Inc A New Corporation | 501(c)(3) | 2004 | $92 million | 2024-12 | |
| Tech4youth Foundation | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| The George Schwab and Leona Lauder Foundation | 501(c)(3) | 2014 | $427,682 | 2025-12 | |
| Unleashed Productions Inc | 501(c)(3) | 2016 | $83,141 | 2025-10 | |
| Walter Iberti Charitable Foundation | 501(c)(3) | 1999 | $279,993 | 2025-12 |
Other causes in Tiburon, CA
- Arts, culture and humanities 7
- Education 6
- Environment 5
- Human services 5
- Public and societal benefit 5
- Recreation and sports 5
- International, foreign affairs and national security 3
- Health care 3
- Youth development 3
- Religion-related 3
Every nonprofit in Tiburon, CA · Philanthropy, voluntarism and grantmaking foundations nonprofits across the state · Nonprofits in every city of the state
Read from the IRS Exempt Organizations Business Master File, updated by the IRS on October 24, 2026 and rebuilt here every morning. Revenue and assets are from each organization's latest filing as the IRS lists it; the IRS record is the official one. Organizations only: no people are named on these pages.