· Private foundation
Leonard Mayer 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.
What it funded, over time
Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2025.
Where the money goes
Grants by size, and the largest recipients.
| Recipient | Amount |
|---|---|
| PROSTATE CANCER FOUNDATION | $5,000 |
| PARKINSONS FOUNDATION | $5,000 |
| MEMORIAL SLOAN KETTERING | $4,000 |
| ST JUDE CHILDRENS HOSPITAL | $3,000 |
| FRIENDS OF THE ISRAEL DEFENSE FORCES | $3,000 |
| AMERICAN FRIENDS OF MAGEN DAVID | $3,000 |
| ALZHEIMERS ASSOCIATION | $3,000 |
| AMERICAN MACULAR DEGENERATION FOUNDATION | $2,000 |
| HILLEL OF BROWARD AND PALM BEACH | $1,800 |
| HOLOCAUST MEMORIAL MUSEUM | $1,000 |
| WOUNDED WARRIOR PROJECT | $500 |
Does the money reach high-need areas?
Each grant placed by the hardship in its grantee’s ZIP, against the area’s typical level.
Its human-services grants (FY17–25, $2k) land where the poverty rate runs at 14%, against an area that typically sits at 11%. 100% of those dollars go to grantees based in above-average-need neighborhoods. Most of its grants land in higher-need ZIPs.
How this is measured
Which US states its grants reach
How this is measured
Who it funds again
Organizations funded in more than one year, against those funded once.
Grantees it renews have grown median revenue +32% since the first grant, against +17% for those funded once.
24 repeat relationships: 11 still active in FY2025, 13 since wound down.
How the two cohorts compare
Organizations
Total granted
Median revenue growth · since first grant
Still filing today
New vs renewed · share of each year
In FY2025, 100% of grant dollars renewed an existing relationship; $0 went to new ones.
Where new relationships form · theme of each grantee’s first grant
How this is measured
Backed again, and grew
PARKINSON'S FOUNDATION INC5× · 2021–2025 · $13k · revenue +102%- ADALZHEIMER'S DISEASE & RELATED DISORDERS ASSOCIATION INC7× · 2018–2025 · $11k · revenue +32%
- HOHILLEL OF BROWARD AND PALM BEACH INC6× · 2020–2025 · $6k · revenue +140%
Funded once
- IGIndividual grant recipientone grant, 2019 · $2k
- CHCONGENITAL HEART DEFECT COALITIONgraduatedone grant, 2019 · $1k · revenue +48%
- HFHOSPITALS FOR SPECIAL SURGERYone grant, 2023 · $1k
How this is measured
Repeat means funded in two or more distinct years. Growth and survival are read from each grantee’s own subsequent IRS filings.
Closest unfunded matches
The nonprofits that most resemble its grantees but are not funded by it, scored along the direction from the rest of the field toward the portfolio. A resemblance in what they say they do, not a recommendation.
Support the hebrew univ. of jerusalem, israel's foremost center of higher edu. & research.
The organization seeks to reinforce the foundations of israel as a jewish and democratic state. it acts to promote programs to educate the israeli public on the importance of both values and to demonstrate how each contributes to and…
To strengthen israel's future in these areas: 1)providing new immigrants with assistance in a few key areas: representing them as they navigate government ministries and assisting them with their challenges as new immigrants to israel.…
The fund's primary exempt mission is to solicit grants and contributions to support the educational mission of the bar-ilan university's azrieli faculty of medicine in the galilee.
Brightfocus foundation funds exceptional research worldwide to defeat alzheimer's disease, macular degeneration, and glaucoma and provides expert information on these heartbreaking diseases. please refer to schedule o for a complete…
The mission of the organization is to enrich the lives of jewish undergraduate and graduate students so that they may enrich the jewish people and the world.
Hadassah, the women's zionist organization of america, inc., a new york not-for-profit corporation ("hwzoa") enhances the health and lives of people in israel, the united states and worldwide through education, advocacy, women's…
We fundraise in the u.s. to support, and raise awareness of, bar-ilan university in israel.
How this is measured
15 grantees tracked through their own filings, 2017–2025.
Each grant beside the grantee’s revenue from every source, year by year.
How this is measured
Counted here: distinct organizations funded across 2017 to 2025, not grant rows in a single year, so this will not match the grant count on the cover. 15 of the 38 grantees resolved in that span have returns of their own we could reconcile.
Each grantee is resolved to its own IRS returns. Association, dated; never a causal claim.
Where the money sits, by cause and then by grantee
Each grantee by its size and the funder’s share of it; top left is load-bearing
Grantee by grantee: a decade per organization, before and after funding
A decade per grantee: revenue shaded, grants as bars, all rows on one timeline.
- Who funds PARKINSON'S FOUNDATION INC ↗
- Who funds ALZHEIMER'S DISEASE & RELATED DISORDERS ASSOCIATION INC ↗
- Who funds PEF ISRAEL ENDOWMENT FUNDS INC ↗
- Who funds HILLEL OF BROWARD AND PALM BEACH INC ↗
- Who funds FRIENDS OF THE ISRAEL DEFENSE FORCES ↗
- Who funds AMERICAN MACULAR DEGENERATION GOEHRING ↗
- Who funds Boca Raton Regional Hospital Foundation Inc ↗
- Who funds WOUNDED WARRIOR PROJECT INC ↗
- Who funds CONGENITAL HEART DEFECT COALITION ↗
- Who funds THE DOE FUND INC ↗
- Who funds INTERNATIONAL FELLOWSHIP OF CHRISTIANS & JEWS INC ↗
- Who funds FLORIDA SOCIETY FOR MIDDLE EAST STUDIES ↗
- Who funds THE GIFT OF LIFE CORPORATION ↗
- Who funds JEWISH NATIONAL FUND (KEREN KAYEMETH LEISRAEL) INC ↗
- Who funds FLORIDA ATLANTIC UNIVERSITY FOUNDATION INC ↗
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 set of overlaps that mostly run through this funder rather than between each other.
Open a dossier: Amazonsmile Foundation
How this is measured
How much its grantees rely on government
Each dot is one organization Leonard Mayer Foundation funds: left to right is the share of its income from government, bottom to top the share from Leonard Mayer Foundation. Bigger dots raise more.
- Wounded Warrior Project Inc: 0% of income from government
How this is measured
Play a game based on Leonard Mayer’s filings →