Siff Charitable Foundation
Siff Charitable Foundation is a private foundation based in Worcester, Massachusetts. In 2025, it gave $102,390 through 33 grants to charitable organizations, including a university, arts organizations, and organizations serving people with autism and developmental disabilities.
Siff Charitable Foundation at a glance
In short: Siff Charitable Foundation gave $102K across 33 grants in 2025 (avg $3K), top state New York. 33% of 2025 grantees were new. Source: 2025 IRS Form 990-PF.
- Annual giving (2025)
- $102,390
- +6.3% vs 2024
- Grants made (2025)
- 33
- -8.3% vs 2024
- Average grant
- $3,103
- +15.9% vs 2024
- Median grant
- $500
- Total assets
- $82,885
- +53.5% vs 2024
- New grantees (estimate)
- 33% first-time grantees (11 of 33, 2025)
- Primary geography
- New York (48% of itemized 2025 grant dollars)
- Latest 990 filing
- Form 990-PF, 2025 View filing
Data from IRS Form 990-PF, 2025; updated October 2026. New grantees are estimated by matching recipient names across years (methodology).
How to apply to Siff Charitable Foundation
- Accepts unsolicited proposals
- No
- How to Apply
-
The foundation makes contributions only to preselected charitable organizations and does not accept unsolicited requests for funds.
- Contact
Mailing address: 306 Main Street Ste 400, Worcester, MA 01615-0034
Phone: (508) 791-0901
Application details from Grantable's research on the foundation's public materials; confirm on its website before applying.
Who Siff Charitable Foundation funds
How this funder distributes its grants
Top Recipients
Top 10 recipients in 2025
The largest 2025 recipient was Umass Chan Medical School Foundation ($27K). Together the top 10 received $90K.
Grant Size Distribution
175 grants across all recorded years
The most common grant size was under $50K: 175 grants of 175 (100%).
Geographic Focus
Where this funder awards grants
In 2025, grant dollars were distributed among recipients in New York (48%), Massachusetts (41%), New Jersey (5%), Florida (4%), and California (2%).
Grant Distribution by State
Share of 2025 grant dollars across all 33 itemized grants.
States
Cities
Is Siff Charitable Foundation open to new grantees?
33%
first-time grantees, 2025
In 2025, 11 of 33 grantees (33%) were first-time recipients. First grants averaged $2K; repeat grants $4K. How we count
Medians: $500 first-time, $1K repeat.
- 61% of 2025 grantees were also funded in 2024. Method
- Giving grew 23% from 2022 to 2025. Method
- In 2025 it paid out well above its IRS minimum distribution (the 5% rule). Method
Estimate from itemized grant lists in IRS Form 990-PF filings (2020–2025). Recipient names are matched across years, so a renamed or misspelled grantee can look new; grants to individuals are left out. Methodology.
Giving History
Giving Over Time
Total grant dollars and number of grants per year
From 2020 to 2025, annual grant giving ranged from $68K (2023) to $102K (2025). In 2025 it made 33 grants totaling $102K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Umass Chan Medical School Foundation Shrewsbury, MA | General | $26,600 |
| New York University New York, NY | General | $15,000 |
| Woodstock Film Festival Woodstock, NY | General | $15,000 |
| Next for Autism New York, NY | General | $12,000 |
| Alpine Learning Center Paramus, NJ | General | $5,000 |
| Umass Memorial Foundation Shrewsbury, MA | General | $5,000 |
| Temple Emanuel Sinai Worcester, MA | General | $3,400 |
| Autism Project of Palm Beach County Jupiter, FL | General | $2,500 |
| Tibetan Home of Hope Valley Cottage, NY | General | $2,500 |
| Worcester Art Museum Worcester, MA | General | $2,500 |
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Financial History
Multi-year comparison from IRS filings
| Filing year | Total Assets | Revenue | Expenses | Grants paid | Grants | Qualifying Distributions | Net Investment Income | Distributable Amount |
|---|---|---|---|---|---|---|---|---|
| 2025 | $82,885 | $135,746 | $106,868 | $102,390 | 33 | $102,390 | — | $2,376 |
| 2024 | $54,007 | $125,869 | $100,537 | $96,342 | 36 | $96,342 | — | $2,525 |
| 2023 | $28,675 | $60,359 | $71,972 | $68,430 | 35 | $68,430 | — | $2,328 |
| 2022 | $40,288 | $56,034 | $87,723 | $83,333 | 38 | $83,333 | — | $2,260 |
| 2021 | $71,977 | $134,026 | $80,412 | $74,142 | 33 | $74,142 | $59,066 | $1,928 |
| 2020 | $18,363 | $-8,153 | $73,790 | $73,669 | 42 | — | $44,310 | $2,632 |
Under IRS private-foundation payout rules, Siff Charitable Foundation reported a distributable amount of $2K for 2025 — the minimum it must pay out in qualifying distributions.
Research compiled by Grantable AI from public sources. Last updated September 2026.
Mission & Focus Areas
No mission statement for the foundation is provided. Its 2025 grantees show support for organizations with varied missions. New York University describes its work as education, research and scholarship, and patient care. The Woodstock Film Festival says it supports filmmakers and offers festival and year-round programming focused on culture, diversity, community, and education. Next for AUTISM says it designs and supports programs for people with autism, while WATCH Resources says it provides services for developmentally disabled adults. The Worcester Art Museum describes its mission as connecting people, communities, and cultures through art.
Grantmaking
In 2025, the foundation reported 33 grants totaling $102,390. Grants ranged from $50 to $26,600, with a median of $500. The largest grants included $26,600 to UMass Chan Medical School Foundation; $15,000 each to New York University and Woodstock Film Festival; and $12,000 to Next for AUTISM. These grants were listed for general purposes.
Leadership & Key People
Leadership team and compensation from IRS filings
The 2025 filing lists Shirley S Siff, Lawrence Siff, and Karen Siff-Exkorn as trustees.
Siff Charitable Foundation's 2025 filing lists 3 officers; none of the 3 officers listed in 2025 report compensation.
Officers on the 2025 filing
Karen Siff-Exkorn
Trustee
On filings since 2020
1 hr/week
No compensation reported
Lawrence Siff
Trustee
On filings since 2020
1 hr/week
No compensation reported
Shirley S. Siff
Trustee
On filings since 2020
1 hr/week
No compensation reported
Data from IRS Form 990 filings, 2020–2025. "On filings since" is the earliest filing we hold that lists the person; hours are average hours per week as reported.
Frequently asked questions about Siff Charitable Foundation
How much does Siff Charitable Foundation give each year?
Siff Charitable Foundation gave $102K across 33 grants in 2025, according to its 2025 IRS Form 990-PF. In 2024 it gave $96K across 36 grants.
What is Siff Charitable Foundation's typical grant size?
Siff Charitable Foundation's median grant in 2025 was $500, and its average grant was $3,103, across 33 grants on its 2025 IRS Form 990-PF. Organizations receiving their first grant from Siff Charitable Foundation that year got $2K on average.
Where does Siff Charitable Foundation give grants?
Siff Charitable Foundation's top state is New York, with 48% of the grant dollars itemized on its 2025 IRS Form 990-PF. The next largest state was Massachusetts (41%). The most frequent recipient cities were Worcester, MA (8 grants), New York, NY (6 grants), Shrewsbury, MA (3 grants) and Jupiter, FL (2 grants).
Does Siff Charitable Foundation give general operating support?
Yes: 100% of Siff Charitable Foundation's 2025 grants with a stated purpose (33 of 33) were for general or operating support, per its 2025 IRS Form 990-PF.
Who are Siff Charitable Foundation's largest grantees?
Siff Charitable Foundation's largest 2025 grantees include Umass Chan Medical School Foundation ($26,600), New York University ($15,000) and Woodstock Film Festival ($15,000), according to its 2025 IRS Form 990-PF. Together they received 55% of its itemized 2025 grant dollars.
How large is Siff Charitable Foundation?
Siff Charitable Foundation reported $83K in total assets on its 2025 IRS Form 990-PF. It paid out $102K in qualifying distributions that year, against a required minimum of $2K (roughly 5% of its investment assets).
What does Siff Charitable Foundation fund?
No mission statement for the foundation is provided. Its 2025 grantees show support for organizations with varied missions. New York University describes its work as education, research and scholarship, and patient care. See mission & focus areas ↑
How do I apply for a grant from Siff Charitable Foundation?
The foundation makes contributions only to preselected charitable organizations and does not accept unsolicited requests for funds. Eligibility and process details are in the grantmaking section of this profile. See how to apply ↑
What is Siff Charitable Foundation's EIN?
Siff Charitable Foundation's EIN (Employer Identification Number) is 04-6112346. IRS Form 990 filing data is available on this page for 2020–2025.
Does Siff Charitable Foundation accept unsolicited proposals?
No, according to Grantable's research on the foundation's published guidelines. See how to apply ↑
Data last updated October 2026. Sourced from IRS Form 990-PF filings. Research dossier generated September 2026.
Data update history
(2)
When this profile's IRS filing data changed on Grantable
- Added Form 990-PF for fiscal year 2025 (received by the IRS May 4, 2026)
- IRS filings on file for fiscal years 2020–2024
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Cite this profile
Grantable. (2026). Siff Charitable Foundation funder profile. GrantGraph. Retrieved October 12, 2026, from https://grantable.co/funders/siff-charitable-foundation-morg_bae5e725e8bc4ae3b197d761009747d3
BibTeX
@misc{grantable_046112346_2026,
author = {{Grantable}},
title = {{Siff Charitable Foundation funder profile}},
howpublished = {GrantGraph},
year = {2026},
url = {https://grantable.co/funders/siff-charitable-foundation-morg_bae5e725e8bc4ae3b197d761009747d3},
note = {Accessed 2026-10-12. Data licensed CC BY 4.0}
}The figures on this page are open data under CC BY 4.0: reuse them with credit to Grantable and a link. Download the data.
Figures come from Siff Charitable Foundation's IRS filings (methodology). AI-written summaries, news items and logos are not covered by the open licence. Spot an error? Email hello@grantable.co.
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