Irwin Weiner Charitable Foundation Inc
Irwin Weiner Charitable Foundation Inc is a private foundation based in White Plains, New York. Its 2025 filing reports $50,000 in grants to 17 organizations, including organizations involved in education, sports, health care, and community services.
Irwin Weiner Charitable Foundation Inc at a glance
In short: Irwin Weiner Charitable Foundation Inc gave $50K across 17 grants in 2025 (avg $3K), mostly in New York. 6% of 2025 grantees were new. Source: 2025 IRS Form 990-PF.
- Annual giving (2025)
- $50,000
- +20.5% vs 2024
- Grants made (2025)
- 17
- +13.3% vs 2024
- Average grant
- $2,941
- +6.3% vs 2024
- Median grant
- $2,000
- Total assets
- $272,702
- +2.5% vs 2024
- New grantees (estimate)
- 6% first-time grantees (1 of 17, 2025; small sample)
- Primary geography
- New York (72% 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 Irwin Weiner Charitable Foundation Inc
- Accepts unsolicited proposals
- No
- How to Apply
-
The foundation does not accept unsolicited requests for funds; it states that it makes contributions only to preselected charitable organizations.
- Contact
Mailing address: 1133 Westchester Ave N-208, White Plains, NY 10604
Phone: (914) 948-1556
Application details from Grantable's research on the foundation's public materials; confirm on its website before applying.
Who Irwin Weiner Charitable Foundation Inc funds
How this funder distributes its grants
Top Recipients
Top 10 recipients in 2025
The largest 2025 recipient was Holocaust and Human Rights Education Ctr ($15K). Together the top 10 received $43K.
Grant Size Distribution
77 grants across all recorded years
The most common grant size was under $50K: 77 grants of 77 (100%).
Geographic Focus
Where this funder awards grants
In 2025, 72% of grant dollars went to recipients in New York. The other reported shares were Pennsylvania, 8%; Massachusetts, 6%; Missouri, 6%; and Idaho, 6%.
Grant Distribution by State
Share of 2025 grant dollars across all 17 itemized grants.
Cities
Is Irwin Weiner Charitable Foundation Inc open to new grantees?
6%
first-time grantees, 2025
In 2025, 1 of 17 grantees (6%) were first-time recipients. With only 17 grantees, that is a small sample: one grantee more or less moves the share by about 6 points. First grants averaged $3K; repeat grants $3K. How we count
Medians: $3K first-time, $2K repeat.
- 88% of 2025 grantees were also funded in 2024. Method
- Giving held roughly steady from 2022 to 2025 (+12%). Method
- In 2025 it paid out 219% of its IRS minimum distribution (the 5% rule). Method
Estimate from itemized grant lists in IRS Form 990-PF filings (2019–2025). 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 2019 to 2025, annual grant giving ranged from $41K (2020) to $50K (2025). In 2025 it made 17 grants totaling $50K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Holocaust and Human Rights Education Ctr Purchase, NY | General Support | $15,000 |
| City Lax Inc New York, NY | General Support | $4,500 |
| Hamilton College-Men's Lacrosse Team Clinton, NY | General Support | $4,000 |
| Muhlenberg Women's Lacrosse Allentown, PA | General Support | $4,000 |
| Bedford Free Library Bedford, MA | General Purpose | $3,000 |
| Veterans Community Project Kansas City, MO | General Support | $3,000 |
| Lee Pesky Learning Center Boise, ID | General Support | $3,000 |
| Brooklyn Law School Brooklyn, NY | General Support | $2,000 |
| Congregation B'nai Yisrael Armonk, NY | General Support | $2,000 |
| Israel Lacrosse Association New York, NY | General Support | $2,000 |
Ready to take the next step with Irwin Weiner Charitable Foundation Inc?
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 | $272,702 | $66,360 | $59,604 | $50,000 | 17 | $54,624 | $61,380 | $24,935 |
| 2024 | $265,946 | $29,592 | $50,279 | $41,500 | 15 | $45,490 | $24,803 | $23,941 |
| 2023 | $286,633 | $13,878 | $61,107 | $42,650 | 16 | $54,724 | $9,316 | $21,121 |
| 2022 | $333,862 | $94,861 | $56,966 | $44,650 | 14 | $52,807 | $90,702 | $23,282 |
| 2021 | $295,967 | $55,230 | $54,709 | $43,600 | 15 | $50,518 | $51,039 | $23,473 |
| 2020 | $295,446 | $62,211 | $52,921 | $40,600 | 17 | — | $59,570 | $20,190 |
| 2019 | $286,156 | $30,615 | $56,663 | $46,100 | 17 | — | $26,963 | $22,423 |
Under IRS private-foundation payout rules, Irwin Weiner Charitable Foundation Inc reported a distributable amount of $25K 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 grants went to organizations with varied activities. For example, City Lax Inc says its mission is to start character-based lacrosse programs with New York City public schools and community organizations. The Veterans Community Project describes its work as providing wrap-around services and transitional housing to veterans, with a long-term goal of addressing veteran homelessness nationwide. Lee Pesky Learning Center says it works with families, schools, and communities to help overcome obstacles to learning.
Other 2025 recipients included Blythdale Children’s Hospital, which describes its work as improving children’s health and well-being, and Calvary Hospital, which describes its mission as caring for adults with advanced cancer and other life-limiting illnesses.
Grantmaking
In 2025, the foundation made 17 grants totaling $50,000. Grant amounts ranged from $1,000 to $15,000, with a median grant of $2,000. Among the largest were $15,000 to Holocaust and Human Rights Education Center; $4,500 to City Lax Inc; $4,000 each to Hamilton College-Men’s Lacrosse Team and Muhlenberg Women’s Lacrosse; and $3,000 each to Bedford Free Library, Veterans Community Project, and Lee Pesky Learning Center. The listed grants generally identified their purpose as general support or general purpose.
Leadership & Key People
Leadership team and compensation from IRS filings
The 2025 filing lists Michael Markhoff as vice president; Nancy Allen Markhoff as secretary; Harris Markhoff as president and treasurer; and Adam Markoff, Abigail Markoff, and Molly Markoff as directors.
Irwin Weiner Charitable Foundation Inc is led by Harris Markhoff, President & Treasurer on every filing since 2019; none of the 6 officers listed in 2025 report compensation.
Officers on the 2025 filing
Harris Markhoff
President & Treasurer
On filings since 2019
1 hr/week
No compensation reported
Adam Markoff
Director
On filings since 2021
1 hr/week
No compensation reported
Abigail Markhoff
Director
On filings since 2024
1 hr/week
No compensation reported
Molly Markhoff
Director
On filings since 2024
1 hr/week
No compensation reported
Michael Markhoff
Vice President
On filings since 2019
1 hr/week
No compensation reported
Nancy Allen Markhoff
Secretary
On filings since 2019
1 hr/week
No compensation reported
Data from IRS Form 990 filings, 2019–2025. "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 Irwin Weiner Charitable Foundation Inc
How much does Irwin Weiner Charitable Foundation Inc give each year?
Irwin Weiner Charitable Foundation Inc gave $50K across 17 grants in 2025, according to its 2025 IRS Form 990-PF. In 2024 it gave $42K across 15 grants.
What is Irwin Weiner Charitable Foundation Inc's typical grant size?
Irwin Weiner Charitable Foundation Inc's median grant in 2025 was $2,000, and its average grant was $2,941, across 17 grants on its 2025 IRS Form 990-PF. Organizations receiving their first grant from Irwin Weiner Charitable Foundation Inc that year got $3K on average.
Where does Irwin Weiner Charitable Foundation Inc give grants?
Irwin Weiner Charitable Foundation Inc gives mostly in New York: 72% of the grant dollars itemized on its 2025 IRS Form 990-PF went to recipients there. The next largest states were Pennsylvania (8%) and Massachusetts (6%). The most frequent recipient cities were New York, NY (4 grants).
Does Irwin Weiner Charitable Foundation Inc give general operating support?
Yes: 100% of Irwin Weiner Charitable Foundation Inc's 2025 grants with a stated purpose (17 of 17) were for general or operating support, per its 2025 IRS Form 990-PF.
Who are Irwin Weiner Charitable Foundation Inc's largest grantees?
Irwin Weiner Charitable Foundation Inc's largest 2025 grantees include Holocaust and Human Rights Education Ctr ($15,000), City Lax Inc ($4,500) and Hamilton College-Men's Lacrosse Team ($4,000), according to its 2025 IRS Form 990-PF. Together they received 47% of its itemized 2025 grant dollars.
How large is Irwin Weiner Charitable Foundation Inc?
Irwin Weiner Charitable Foundation Inc reported $273K in total assets on its 2025 IRS Form 990-PF. It paid out $55K in qualifying distributions that year, against a required minimum of $25K (roughly 5% of its investment assets).
What does Irwin Weiner Charitable Foundation Inc fund?
No mission statement for the foundation is provided. Its 2025 grants went to organizations with varied activities. For example, City Lax Inc says its mission is to start character-based lacrosse programs with New York City public schools and community organizations. See mission & focus areas ↑
How do I apply for a grant from Irwin Weiner Charitable Foundation Inc?
The foundation does not accept unsolicited requests for funds; it states that it makes contributions only to preselected charitable organizations. Eligibility and process details are in the grantmaking section of this profile. See how to apply ↑
What is Irwin Weiner Charitable Foundation Inc's EIN?
Irwin Weiner Charitable Foundation Inc's EIN (Employer Identification Number) is 04-3595876. IRS Form 990 filing data is available on this page for 2019–2025.
Does Irwin Weiner Charitable Foundation Inc 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
(3)
When this profile's IRS filing data changed on Grantable
- Added Form 990-PF for fiscal year 2019 (received by the IRS May 15, 2020)
- Added Form 990-PF for fiscal year 2025 (received by the IRS May 14, 2026)
- IRS filings on file for fiscal years 2020–2024
Explore Open Grants
Browse active grant opportunities in Irwin Weiner Charitable Foundation Inc's focus areas in our free grants database
Similar Funders
Funders with grantees in common, and similar funders in New York
IBM International Foundation
Armonk, NY
The IBM International Foundation funds education and workforce programs that build 21st-century and technology job skills, including initiatives for underserved students and job seekers. Its 2024 grants ranged from $10,000 to $8.48 million, with a median of $100,000, and went to organizations across several U.S. states, especially Delaware and Massachusetts. It funds only preselected organizations and does not accept unsolicited requests.
Assets
$357.7M
Grants
16
Total Given
$11.7M
The Ford Foundation
New York, NY
The Ford Foundation funds organizations and initiatives working to reduce inequality and advance social justice, including work on civic engagement, civil rights, climate justice, disability rights, and technology and society. In 2024, its grants ranged from $45 to $15 million, with a median of $100,000, supporting work in the U.S. and internationally. It says most grants are identified by the foundation and it does not accept unsolicited proposals by mail, email, or phone; limited opportunities may be offered separately.
Assets
$17.5B
Grants
4,007
Total Given
$844.7M
The New York Community Trust
New York, NY
The New York Community Trust funds nonprofit programs in areas such as arts, education, health, the environment, workforce development, and youth development, including projects that improve services, build organizational capacity, or advance policy and systems change. Its competitive grants mainly serve New York City, Long Island, and Westchester, with some national and international environmental funding; the 2024 median grant was $20,000. The profile does not state whether it accepts unsolicited requests.
Assets
$3.5B
Grants
2,748
Total Given
$193.8M
The Simons Foundation Inc
New York, NY
The Simons Foundation funds research and public engagement in mathematics and the physical, life, autism, and neuroscience sciences. In 2024, it made 1,727 grants, with a median award of $72,000 and amounts ranging from $1,480 to $20 million, supporting organizations in the U.S. and internationally. It states that it funds only preselected charitable organizations and does not accept unsolicited requests.
Assets
$4.5B
Grants
1,727
Total Given
$272.0M
Local Initiatives Support Corporation
New York, NY
LISC funds affordable housing, community development, small businesses, and related efforts that strengthen inclusive communities, providing grants as well as loans, equity, and technical assistance across the country. Its 2024 grants had a median award of $40,000, though amounts varied widely. Application access is program-specific: for its Rhode Island child care facilities planning grants, applicants are instructed to consult program staff before submitting a request.
Assets
$1.6B
Grants
1,119
Total Given
$102.8M
Wellspring Philanthropic Fund Inc
New York, NY
Wellspring Philanthropic Fund supports human rights and social and economic justice, including work on climate, the environment, civic engagement, and Jewish causes, in the United States and internationally. Its 2024 grants had a median of $200,000, with amounts ranging from $500 to $9.75 million. It funds only preselected organizations and does not accept unsolicited requests; it plans to end grantmaking by the end of 2028.
Assets
$134.4M
Grants
1,101
Total Given
$326.0M
More Funders in New York
Cite this profile
Grantable. (2026). Irwin Weiner Charitable Foundation Inc funder profile. GrantGraph. Retrieved October 12, 2026, from https://grantable.co/funders/irwin-weiner-charitable-foundation-inc-morg_98d257cbcb5f448893c2a429d57d7898
BibTeX
@misc{grantable_043595876_2026,
author = {{Grantable}},
title = {{Irwin Weiner Charitable Foundation Inc funder profile}},
howpublished = {GrantGraph},
year = {2026},
url = {https://grantable.co/funders/irwin-weiner-charitable-foundation-inc-morg_98d257cbcb5f448893c2a429d57d7898},
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 Irwin Weiner Charitable Foundation Inc'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.
Irwin Weiner Charitable Foundation Inc down — hundreds of funders to go?