Leonard Mayer Foundation
The Leonard Mayer Foundation is a private foundation based in Livingston, New Jersey. Its 2025 filing reports grants to charitable organizations, with listed recipients working in areas including health, Jewish community life, and support for veterans.
Leonard Mayer Foundation at a glance
In short: Leonard Mayer Foundation gave $31K across 11 grants in 2025 (avg $3K), top state Minnesota. 0% of 2025 grantees were new. Source: 2025 IRS Form 990-PF.
- Annual giving (2025)
- $31,300
- +64.7% vs 2024
- Grants made (2025)
- 11
- +0.0% vs 2024
- Average grant
- $2,845
- +64.7% vs 2024
- Median grant
- $3,000
- Total assets
- $251,149
- -13.7% vs 2024
- New grantees (estimate)
- 0% first-time grantees (0 of 11, 2025; small sample)
- Primary geography
- Minnesota (32% 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 Leonard Mayer Foundation
- Accepts unsolicited proposals
- No
- How to Apply
-
The foundation does not accept unsolicited requests for funds and states that it contributes only to preselected charitable organizations.
- Contact
Mailing address: 346 East Cedar St, Livingston, NJ 07039
Phone: (561) 241-0830
Application details from Grantable's research on the foundation's public materials; confirm on its website before applying.
Who Leonard Mayer Foundation funds
How this funder distributes its grants
Top Recipients
Top 10 recipients in 2025
The largest 2025 recipient was Parkinsons Foundation ($5K). Together the top 10 received $31K.
Grant Size Distribution
61 grants across all recorded years
The most common grant size was under $50K: 61 grants of 61 (100%).
Geographic Focus
Where this funder awards grants
The 2025 filing lists recipients in Minnesota, Washington, DC, New York, Maryland, Massachusetts, Florida, Virginia, and Kansas. By share of grant dollars, Minnesota received 32%, Washington, DC and New York each received 19%, Maryland received 13%, and Massachusetts received 6%.
Grant Distribution by State
Share of 2025 grant dollars across all 11 itemized grants.
States
Cities
Is Leonard Mayer Foundation open to new grantees?
0%
first-time grantees, 2025
In 2025, 0 of 11 grantees (0%) were first-time recipients. With only 11 grantees, that is a small sample: one grantee more or less moves the share by about 9 points. How we count
- 73% of 2025 grantees were also funded in 2024. Method
- Giving grew 74% from 2022 to 2025. Method
- In 2025 it paid out 269% of 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 $13K (2021) to $31K (2025). In 2025 it made 11 grants totaling $31K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Parkinsons Foundation Albert Lee, MN | Operating Funds | $5,000 |
| Prostate Cancer Foundation Albert Led, MN | Operating Funds | $5,000 |
| Memorial Sloan Kettering Hagerstown, MD | Operating Funds | $4,000 |
| Alzheimers Association Washington, DC | Operating Funds | $3,000 |
| American Friends of Magen David Washington, DC | Operating Funds | $3,000 |
| Friends of the Israel Defense Forces New York, NY | Operating Funds | $3,000 |
| St Jude Childrens Hospital New York, NY | Operating Funds | $3,000 |
| American Macular Degeneration Foundation Northampton, MA | Operating Funds | $2,000 |
| Hillel of Broward and Palm Beach Boca Raton, FL | Operating Funds | $1,800 |
| Holocaust Memorial Museum Merrifield, VA | Operating Funds | $1,000 |
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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 | $251,149 | $174 | $40,081 | $31,300 | 11 | $35,641 | $174 | $13,252 |
| 2024 | $291,056 | $-24,486 | $25,594 | $19,000 | 11 | $22,197 | $4,301 | $13,825 |
| 2023 | $341,136 | $7,364 | $27,720 | $26,000 | 15 | $26,000 | $5,909 | $14,397 |
| 2022 | $355,523 | $8,561 | $18,119 | $18,000 | 10 | $18,000 | $8,561 | $21,746 |
| 2021 | $532,385 | $8,573 | $13,513 | $13,000 | 14 | $13,000 | $8,573 | $25,760 |
| 2020 | $518,551 | $27,882 | $20,259 | $18,964 | 16 | — | $27,882 | $16,594 |
Under IRS private-foundation payout rules, Leonard Mayer Foundation reported a distributable amount of $13K 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 including health charities, Jewish community organizations, and organizations supporting military personnel and veterans. Friends of the Israel Defense Forces describes its mission as providing critical support for the health, well-being, and education of Israel’s protectors. Hillel of Broward and Palm Beach says it operates and maintains a facility serving the cultural, educational, religious, and social needs and interests of Jewish college students in Broward and Palm Beach counties.
Grantmaking
In 2025, the foundation gave $31,300 through 11 grants. Grant amounts ranged from $500 to $5,000, with a median of $3,000. Listed grants included $5,000 each to Parkinsons Foundation and Prostate Cancer Foundation; $4,000 to Memorial Sloan Kettering; and $3,000 each to Alzheimer’s Association, American Friends of Magen David, Friends of the Israel Defense Forces, and St Jude Children’s Hospital.
Leadership & Key People
Leadership team and compensation from IRS filings
The 2025 filing lists Leonard Mayer as president and Harriet Mayer as vice president.
Leonard Mayer Foundation is led by Leonard Mayer, President on every filing since 2020; none of the 2 officers listed in 2025 report compensation.
Officers on the 2025 filing
Leonard Mayer
President
On filings since 2020
No compensation reported
Harriet Mayer
Vice President
On filings since 2020
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 Leonard Mayer Foundation
How much does Leonard Mayer Foundation give each year?
Leonard Mayer Foundation gave $31K across 11 grants in 2025, according to its 2025 IRS Form 990-PF. In 2024 it gave $19K across 11 grants.
What is Leonard Mayer Foundation's typical grant size?
Leonard Mayer Foundation's median grant in 2025 was $3,000, and its average grant was $2,845, across 11 grants on its 2025 IRS Form 990-PF.
Where does Leonard Mayer Foundation give grants?
Leonard Mayer Foundation's top state is Minnesota, with 32% of the grant dollars itemized on its 2025 IRS Form 990-PF. The next largest states were District of Columbia (19%) and New York (19%). The most frequent recipient cities were Washington, DC (2 grants) and New York, NY (2 grants).
Does Leonard Mayer Foundation give general operating support?
Yes: 100% of Leonard Mayer Foundation's 2025 grants with a stated purpose (11 of 11) were for general or operating support, per its 2025 IRS Form 990-PF.
Who are Leonard Mayer Foundation's largest grantees?
Leonard Mayer Foundation's largest 2025 grantees include Parkinsons Foundation ($5,000), Prostate Cancer Foundation ($5,000) and Memorial Sloan Kettering ($4,000), according to its 2025 IRS Form 990-PF. Together they received 45% of its itemized 2025 grant dollars.
How large is Leonard Mayer Foundation?
Leonard Mayer Foundation reported $251K in total assets on its 2025 IRS Form 990-PF. It paid out $36K in qualifying distributions that year, against a required minimum of $13K (roughly 5% of its investment assets).
What does Leonard Mayer Foundation fund?
No mission statement for the foundation is provided. Its 2025 grants went to organizations including health charities, Jewish community organizations, and organizations supporting military personnel and veterans. See mission & focus areas ↑
How do I apply for a grant from Leonard Mayer Foundation?
The foundation does not accept unsolicited requests for funds and states that it contributes only to preselected charitable organizations. Eligibility and process details are in the grantmaking section of this profile. See how to apply ↑
What is Leonard Mayer Foundation's EIN?
Leonard Mayer Foundation's EIN (Employer Identification Number) is 23-7042005. IRS Form 990 filing data is available on this page for 2020–2025.
Does Leonard Mayer 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 12, 2026)
- IRS filings on file for fiscal years 2020–2024
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Figures come from Leonard Mayer 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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