Jack Joseph and Morton Mandel Supporting Foundation
The Jack, Joseph and Morton Mandel Supporting Foundation is based in Cleveland, Ohio. Its filing identifies it as a supporting foundation of the Jewish Federation of Cleveland, organized to support the Federation’s purposes and to meet identified needs of the Jewish and general communities. The foundation’s 2025 filing reports 36 grants totaling $131.4 million.
Key facts about Jack Joseph and Morton Mandel Supporting Foundation
In short: Jack Joseph and Morton Mandel Supporting Foundation gave $131.4M across 36 grants in 2025 (avg $3.6M), top state Ohio. 39% of 2025 grantees were new. Source: 2025 IRS Form 990.
- EIN
- 34-1350566
- Latest 990 filing
- Form 990, 2025
- Annual giving (2025)
- $131,385,553
- Grants made (2025)
- 36
- Average grant
- $3,649,599
- Median grant
- $922,500
- New grantees (estimate)
- 39% first-time grantees (14 of 36, 2025)
- Total assets
- $3,348,099,726
- Primary geography
- Ohio (45% of itemized 2025 grant dollars)
- Accepts unsolicited proposals
- No
- How to apply
- The Mandel Foundation website says it does not accept unsolicited requests; its grant application process is by invitation only. Full details ↓
Data from IRS Form 990, 2025; updated September 2026. New grantees are estimated by matching recipient names across years (methodology). Application details from Grantable's research on the foundation's public materials; confirm on its website before applying.
Financial Overview
From 2025 IRS Form 990 · View filing
Total Assets
$3.3B
+4.6% YoY
Annual Giving
$131.4M
+88.7% YoY
Grant Count
36
+63.6% YoY
Avg Grant Size
$3.6M
+15.3% YoY
Is Jack Joseph and Morton Mandel Supporting Foundation open to new grantees?
39%
first-time grantees, 2025
In 2025, 14 of 36 grantees (39%) were first-time recipients. First grants averaged $2.2M; repeat grants $4.6M. How we count
Medians: $938K first-time, $748K repeat.
Estimate from itemized grant lists in IRS Form 990 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.
Mission & Focus Areas
The filing states that the supporting foundation is organized and operated exclusively for charitable, educational or religious purposes by conducting or supporting activities for the benefit of, or to carry out the purposes of, the Jewish Federation of Cleveland. It was established to meet identified needs of the Jewish and general communities.
The Mandel Foundation website names leadership development, management of nonprofits, humanities, Jewish life and urban engagement as its areas of engagement. Its website says it invests in leaders of educational, nonprofit and public-sector institutions; fosters excellence in nonprofit and public-sector management; promotes the humanities; supports Jewish learning and community life; and supports neighborhood and community development.
Grantees’ stated missions illustrate the range of organizations receiving support. The Jewish Federation of Cleveland says it seeks to promote the well-being, continuity, security and unity of its community and Jews worldwide. Secure Community Network describes its work as creating a comprehensive security shield over the Jewish community. BBYO says it aims to involve more Jewish teens in meaningful Jewish experiences, including identity enrichment and leadership development. Other 2025 recipients included a university, a natural-history museum, and organizations focused on Jewish nonprofit leadership and services for people in Ethiopia and Israel.
Grantmaking
In filing year 2025, the foundation reported 36 grants totaling $131,385,553. Grant amounts ranged from $65,000 to $40,006,000, with a median grant of $922,500.
Invitation Only
is by invitation only.
Ready to take the next step with Jack Joseph and Morton Mandel Supporting Foundation?
Geographic Focus
Where this funder awards grants
The 2025 filing reports that grant dollars went to recipients in Ohio (45%), New York (32%), Illinois (13%), Washington, D.C. (7%) and Florida (1%). The filing lists major recipients in Cleveland and New York, among other locations. The Mandel Foundation website describes its purpose as focused on the United States and Israel.
Grant Distribution by State
Share of 2025 grant dollars across all 36 itemized grants.
States
Cities
Giving Over Time
Total grant dollars and number of grants per year
From 2019 to 2025, annual grant giving ranged from $6.8M (2019) to $131.4M (2025). In 2025 it made 36 grants totaling $131.4M.
Grant Insights
How this funder distributes its grants
Top Recipients
Top 10 recipients in 2025
The largest 2025 recipient was Jewish Federation of Cleveland ($40.0M). Together the top 10 received $116.6M.
Grant Size Distribution
127 grants across all recorded years
The most common grant size was in the $1–5M range: 36 grants of 127 (28%).
Giving History
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Jewish Federation of Cleveland Cleveland, OH | Commission on jewish continuity, mandel leadership excellence center, 2025 campaign for jewish needs, community security initiative, israel emergency relief, resource center for jewish education, capital support and housing sub, fund unfunded pension liability | $40,006,000 |
| Jewish Federations of North America Inc New York, NY | Jafi to support shinshinim, jafi planning and infrastructure development for the president's council, jafi ethiopian integration, israel emergency, jafi scholarships, jewish people policy institute, regrow israel | $28,518,900 |
| Secure Community Network Inc Chicago, IL | Security Operations and the Protecht Partnership | $17,000,000 |
| Bnai Brith Youth Organization Inc Washington, DC | Annual International Convention for Five Years | $9,000,000 |
| Musical Arts Association Cleveland, OH | Expanded Community Outreach | $9,000,000 |
| American Jewish Joint Distribution Committee New York, NY | Humanitarian Needs in Ukraine | $3,750,000 |
| Jerusalem Foundation Inc New York, NY | Scholarships and Renovations | $3,610,000 |
| Case Western Reserve University Cleveland, OH | Jack, joseph and morton mandel school of applied social sciences | $2,250,000 |
| Leading Edge Alliance Inc New York, NY | Support for the Jewish Talent Platform | $2,000,000 |
| Struggle to Save Ethiopian Jewry New York, NY | Operating Support | $1,500,000 |
Financial History
Multi-year comparison from IRS filings
| Filing year | Assets | Revenue | Expenses | Grants |
|---|---|---|---|---|
| 2025 | $3,348,099,726 | $168,250,145 | $154,787,179 | $131,385,553 |
| 2024 | $3,201,837,171 | $161,637,489 | $93,091,152 | $69,616,450 |
| 2023 | $3,087,154,462 | $105,136,555 | $72,321,965 | $48,802,379 |
The filing type is 990T.
| Metric | 2025 | 2024 | 2023 |
|---|---|---|---|
| Total Assets | $3,348,099,726 | $3,201,837,171 | $3,087,154,462 |
| Revenue | $168,250,145 | $161,637,489 | $105,136,555 |
| Expenses | $154,787,179 | $93,091,152 | $72,321,965 |
| Net Investment Income | $167,628,198 | $158,031,596 | $104,640,266 |
Data update history
When this profile's IRS filing data changed on Grantable
- Updated Form 990 for fiscal year 2019 (received by the IRS July 14, 2020)
- Updated Form 990 for fiscal year 2021 (received by the IRS May 16, 2022)
- Updated Form 990 for fiscal year 2022 (received by the IRS May 12, 2023)
- Updated Form 990 for fiscal year 2023 (received by the IRS May 13, 2024)
- Updated Form 990 for fiscal year 2024 (received by the IRS May 13, 2025)
- Added Form 990 for fiscal year 2025 (received by the IRS May 14, 2026)
- IRS filings on file for fiscal years 2019–2024
Leadership & Key People
Leadership team and compensation from IRS filings
The 2025 filing lists Stephen H. Hoffman as trustee and president; Dan A. Polster as trustee and vice president; Erika B. Rudin-Luria, Jehuda Reinharz and Charles Horowitz Ratner as trustees; Abigail Levin as secretary; and Kari Blumenthal as treasurer as of March 19, 2025. It also lists Mozelle Jackson as treasurer until March 19, 2025, Barry Reis as assistant treasurer until January 3, 2025, and Kathryn Palus as assistant treasurer.
Jack Joseph and Morton Mandel Supporting Foundation is led by Stephen H. Hoffman See Sch O., Trustee & President on every filing since 2021; none of the 10 officers listed in 2025 report compensation.
Officers on the 2025 filing
Stephen H. Hoffman See Sch O.
Trustee & President
On filings since 2021
1.7 hrs/week
No compensation reported
Charles Horowitz Ratner
Trustee
On filings since 2019
0.2 hrs/week
No compensation reported
Dan A. Polster
Trustee & Vice President
Trustee → Trustee & Vice President, 2021
On filings since 2019
0.3 hrs/week
No compensation reported
Erika B. Rudin-Luria See Sch O.
Trustee
On filings since 2021
1.7 hrs/week
No compensation reported
Jehuda Reinharz See Sch O.
Trustee
On filings since 2021
0.3 hrs/week
No compensation reported
Barry Reis
Assistant Treasurer
Treasurer → *see Sch O, 2024
*see Sch O → Assistant Treasurer, 2025
On filings since 2019
0.7 hrs/week
No compensation reported
Kathryn Palus
Assistant Treasurer
On filings since 2021
20 hrs/week
No compensation reported
Mozelle Jackson
Treasurer
Assistant Treasurer → Treasurer, 2024
On filings since 2022
0.7 hrs/week
No compensation reported
Abigail Levin
Secretary
On filings since 2023
0.7 hrs/week
No compensation reported
Kari Blumenthal
Treasurer
New on the 2025 filing
0.7 hrs/week
No compensation reported
Former officers (10)
- Former: Hedy Milgrom (2019–2023) — Secretary
- Former: Barbara Mandel Zl (2019) — Trustee
- Former: Erika B. Rudin-Luria (2019) — Trustee
- Former: Harley Gross (2019) — Trustee
- Former: Jehuda Reinharz (2019) — Trustee
- Former: Morton L. Mandel Zl (2019) — Trustee & President
- Former: Nancy Hoffner (2019) — Assistant Treasurer
- Former: Penni Weinberg (2019) — Trustee · Filing note: Until 123118
- Former: Renee' Chelm (2019) — Trustee & Vice President
- Former: Stephen H. Hoffman (2019) — Trustee
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.
Contact
Mailing address: 25701 Science Park Drive, Cleveland, OH 44122-7302
Phone: (216) 593-2900
Website: https://mandelfoundation.org
Frequently asked questions about Jack Joseph and Morton Mandel Supporting Foundation
How much does Jack Joseph and Morton Mandel Supporting Foundation give each year?
Jack Joseph and Morton Mandel Supporting Foundation gave $131.4M across 36 grants in 2025, according to its 2025 IRS Form 990. In 2024 it gave $69.6M across 22 grants.
What is Jack Joseph and Morton Mandel Supporting Foundation's typical grant size?
Jack Joseph and Morton Mandel Supporting Foundation's median grant in 2025 was $922,500, and its average grant was $3,649,599, across 36 grants on its 2025 IRS Form 990. Organizations receiving their first grant from Jack Joseph and Morton Mandel Supporting Foundation that year got $2.2M on average.
Where does Jack Joseph and Morton Mandel Supporting Foundation give grants?
Jack Joseph and Morton Mandel Supporting Foundation's top state is Ohio, with 45% of the grant dollars itemized on its 2025 IRS Form 990. The next largest states were New York (32%) and Illinois (13%). The most frequent recipient cities were Cleveland, OH (13 grants) and New York, NY (9 grants).
Does Jack Joseph and Morton Mandel Supporting Foundation give general operating support?
Yes: 11% of Jack Joseph and Morton Mandel Supporting Foundation's 2025 grants with a stated purpose (4 of 36) were for general or operating support, per its 2025 IRS Form 990.
Who are Jack Joseph and Morton Mandel Supporting Foundation's largest grantees?
Jack Joseph and Morton Mandel Supporting Foundation's largest 2025 grantees include Jewish Federation of Cleveland ($40,006,000), Jewish Federations of North America Inc ($28,518,900) and Secure Community Network Inc ($17,000,000), according to its 2025 IRS Form 990. Together they received 65% of its itemized 2025 grant dollars.
How large is Jack Joseph and Morton Mandel Supporting Foundation?
Jack Joseph and Morton Mandel Supporting Foundation reported $3.3B in total assets on its 2025 IRS Form 990. Its revenue that year was $168.3M.
What does Jack Joseph and Morton Mandel Supporting Foundation fund?
The filing states that the supporting foundation is organized and operated exclusively for charitable, educational or religious purposes by conducting or supporting activities for the benefit of, or to carry out the purposes of, the Jewish Federation of Cleveland. See mission & focus areas ↑
How do I apply for a grant from Jack Joseph and Morton Mandel Supporting Foundation?
The Mandel Foundation website says it does not accept unsolicited requests; its grant application process is by invitation only. Eligibility and process details are in the grantmaking section of this profile. See how to apply ↑
What is Jack Joseph and Morton Mandel Supporting Foundation's EIN?
Jack Joseph and Morton Mandel Supporting Foundation's EIN (Employer Identification Number) is 34-1350566. IRS Form 990 filing data is available on this page for 2019–2025.
Does Jack Joseph and Morton Mandel Supporting Foundation accept unsolicited proposals?
No, according to Grantable's research on the foundation's published guidelines. See how to apply ↑
Data last updated September 2026. Sourced from IRS Form 990 filings. Research dossier generated September 2026.
Here's the math on researching Jack Joseph and Morton Mandel Supporting Foundation by hand.
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