Data / Nonprofits / Connecticut / Old Greenwich / Philanthropy, voluntarism and grantmaking foundations
Philanthropy, voluntarism and grantmaking foundations nonprofits in Old Greenwich, CT: 26 registered with the IRS
26 philanthropy, voluntarism and grantmaking foundations nonprofits are registered with the IRS in Old Greenwich, CT, 26 of them 501(c)(3) charities; the 3 that report revenue took in $102.5 million. The largest by revenue: Ithuriel Fund ($102.3 million), Tandem Fund Inc ($139,204), Weevster 18 Inc ($41,769).
SpecStream is the live web data engine for teams and agents. It reads the IRS register of exempt organizations as the IRS updates it, and this page is that reading. Ask for the nonprofits you need by place, cause and size, with their latest Form 990 figures and websites, and they arrive in your sheet, CRM, Slack or agent.
Every organization, largest by revenue first
| Organization | Type | Since | Revenue | Assets | Filing |
|---|---|---|---|---|---|
| Ithuriel Fund | 501(c)(3) | 2022 | $102.3 million | $246.6 million | 2025-12 |
| Tandem Fund Inc | 501(c)(3) | 2025 | $139,204 | $41,005 | 2025-12 |
| Weevster 18 Inc | 501(c)(3) | 2021 | $41,769 | $1,608 | 2025-12 |
| Asher Family Foundation Inc | 501(c)(3) | 1998 | $248,600 | 2025-12 | |
| Blitzer Family Foundation | 501(c)(3) | 2014 | $5.2 million | 2024-12 | |
| Bryan C Cary Statutory Trust Foundation | 501(c)(3) | 2016 | $809,520 | 2024-12 | |
| Costa Bravo Foundation | 501(c)(3) | 2026 | |||
| Costa Doro Foundation | 501(c)(3) | 2020 | $2 million | 2024-12 | |
| Driscoll Family Foundation | 501(c)(3) | 2019 | $3.4 million | 2025-12 | |
| Haimes Family Foundation | 501(c)(3) | 2008 | $143,840 | 2024-12 | |
| Ifs Family Foundation Inc | 501(c)(3) | 1999 | $6.9 million | 2025-12 | |
| Julius Fam Foundation | 501(c)(3) | 2005 | $19,739 | 2025-12 | |
| Karin Bain and John Kukral Foundation | 501(c)(3) | 2017 | $84.6 million | 2025-12 | |
| MHG Foundation Inc | 501(c)(3) | 2005 | $3.8 million | 2024-12 | |
| Miller Charitable Trust | 501(c)(3) | 2022 | $1 | 2025-12 | |
| Penn Oberlander Family Foundation | 501(c)(3) | 2006 | $3.8 million | 2025-12 | |
| Ravengate Foundation | 501(c)(3) | 2000 | $1.1 million | 2025-11 | |
| Ruth Angeline Whitley Memorialfoundation Inc | 501(c)(3) | 2006 | $97,857 | 2025-12 | |
| Samstone Foundation | 501(c)(3) | 2017 | $1.4 million | 2025-12 | |
| Shamana Giving Inc | 501(c)(3) | 2017 | $1,201 | 2025-12 | |
| Spidacares Inc | 501(c)(3) | 2021 | $405,289 | 2024-12 | |
| The Laverack Family Foundation | 501(c)(3) | 2003 | $10.3 million | 2025-11 | |
| The Phffoundation Inc | 501(c)(3) | 2001 | $15 million | 2025-12 | |
| Tikkun Olam Steinberg Foundation Inc | 501(c)(3) | 2013 | $5.9 million | 2025-12 | |
| Vick Foundation Inc | 501(c)(3) | 2002 | $1.6 million | 2024-12 | |
| Worldquant Foundation | 501(c)(3) | 2009 | $22.3 million | 2024-12 |
Other causes in Old Greenwich, CT
- Education 11
- Arts, culture and humanities 8
- Religion-related 7
- Recreation and sports 6
- Diseases, disorders and medical disciplines 4
- Human services 3
- Community improvement and capacity building 3
Every nonprofit in Old Greenwich, CT · 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.