Massachusetts · Private foundation
Siff Charitable Foundation
Its FY2025 filing reports that it funds preselected organizations and did not take unsolicited requests; check the foundation's own site before ruling it out.
- $102k
- Granted FY2025(still arriving)
- 33
- Grants FY2025
- 33
- Organizations funded FY2024
- 18%
- First-time grantees FY2024
- Median grant, FY2025
- $500
- Largest grant, FY2025
- $26,600
- Organizations funded a year
- 31 to 47
- FY2018 to FY2024
- States reached, FY2025
- 7
- Total assets, FY2025
- $83k
- Applications
- Preselected organizations only
- Per its most recent filing; check its own site
How open it is to new grantees
In FY2024, 18% of the organizations Siff Charitable Foundation funded were first-time grantees, receiving 14% of its grant dollars.
New vs renewed · share of each year
In FY2024, 86% of grant dollars renewed an existing relationship; $12k went to new ones.
Where new relationships form · theme of each grantee’s first grant
How this is measured
The numbers by year
| Fiscal year | Organizations funded | To those organizations | First-time grantees |
|---|---|---|---|
| FY2025still arriving | 32 | $102k | 34% |
| FY2024 | 33 | $86k | 18% |
| FY2023 | 33 | $58k | 12% |
| FY2022 | 36 | $65k | 25% |
| FY2021 | 31 | $64k | 19% |
| FY2020 | 39 | $67k | 23% |
| FY2019 | 41 | $77k | 17% |
| FY2018 | 47 | $75k | 36% |
What it funded, over time
Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2025.
Where its grants go
Grant dollars by states, across the years we hold.
Which US states its grants reach
Top grantees
Largest recipients by total granted, FY2017 to FY2025, and the share of each one’s budget the grants supplied at peak.
| Grantee | Total granted | Years | Share of their budget |
|---|---|---|---|
| Mass General Brigham Incorporated | $75,600 | 7 | n/a |
| New York University | $70,000 | 6 | 0% |
| Next for Autism Inc | $67,700 | 9 | 1% |
| Umass Chan Medical School Foundation Inc | $40,350 | 9 | n/a |
| Autism Project of Palm Beach County Inc | $23,350 | 9 | 1% |
| Herizon Inc | $19,150 | 7 | 1% |
| Dana-Farber Cancer Institute Inc | $17,850 | 8 | 0% |
| Woodstock Film Festival Inc | $15,000 | 1 | n/a |
| Worcester Art Museum | $13,250 | 8 | 0% |
| Foundation for Neurologic Diseases Inc | $10,000 | 1 | 0% |
Show all 66 grantees
What it could do for these grantees
Plus 46 recipients with no EIN on record ($258k), not named here.
Where it is load-bearing
Each grantee by its size and the share of its budget Siff Charitable Foundation supplied at peak.
Tap a dot to name the grantee.
How this is measured
Co-funders
Grantmakers whose grantees overlap with this funder’s far more than size alone predicts. Closer means stronger alignment; arcs show where they also fund each other. Here they form a tightly interlocked group: most of these funders back each other's grantees too.
Open a dossier: Melvin S Cutler Charitable Foundation · Ruth H & Warren a Ellsworth Foundation · Schwartz Charitable Foundation · Greater Worcester Community Foundation Inc · Community Foundation for Palm Beach and Martin Counties Inc · Combined Jewish Philanthropies of Greater Boston Inc · Joseph Persky Foundation · The Siff Exkorn Family Foundation Stable Rock Services LLC · Mildred H McEvoy Foundation · The Fred Harris Daniels Foundation · The Fletcher Foundation · Stoddard Charitable Trust
How this is measured
Warm introductions · Powered by PlinthPlus
How do I get to Siff Charitable Foundation?
Find your warmest path to Siff Charitable Foundation through trustees and officers whose names appear on both boards. Search for your organization and Plinth traces the shortest route it can evidence.
Each link is a name appearing on two organizations’ public IRS 990 filings, matched on that name and, where the filings support it, on location. A same-state match has geographic support, which is a second matching feature rather than confirmation that the two are one person; a cross-state one is the likeliest to be two people who share a name. Every hop shows its tier, low-confidence and distant paths are held back rather than guessed, and it is worth confirming the person before you use the introduction.
About Siff Charitable Foundation
- How much does Siff Charitable Foundation give?
- Siff Charitable Foundation reported 33 grants totaling $102,390 in its FY2025 IRS filing. It funded between 31 and 47 organizations a year over FY2018 to FY2024.
- What does Siff Charitable Foundation fund?
- By grant dollars over FY2017 to FY2025, its largest causes are Health (33%), Philanthropy (23%), Education (19%).
- Who are Siff Charitable Foundation's largest grantees?
- By total granted over FY2017 to FY2025: Mass General Brigham Incorporated ($76k), New York University ($70k), Next for Autism Inc ($68k).
- Does Siff Charitable Foundation fund new organizations?
- In FY2024, 18% of the organizations it funded were first-time grantees.
- Does Siff Charitable Foundation accept unsolicited applications?
- Its most recent filing reports that it funds preselected organizations and does not take unsolicited requests. Check the foundation's own site before ruling it out.
- Which funders back the same organizations as Siff Charitable Foundation?
- Its strongest co-funders, measured against what their size predicts, include Melvin S Cutler Charitable Foundation, Ruth H & Warren a Ellsworth Foundation, Schwartz Charitable Foundation.
- Where is Siff Charitable Foundation based?
- Siff Charitable Foundation is based in MA.
Play a game based on Siff’s filings →