· Private foundation
Susan & Leonard Feinstein 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 you funded, over time
Every grant placed by its stated purpose and the recipient’s mission, by year — across FY2017–2025.
Where the money goes
Your grants by size, and where they go.
The 46 grants below total $3,801,400 — the rows itemised in this filing. The $4,226,750 headline is the total grant expense reported on the return, so the remaining $425,350 is giving the schedule does not break out: grants under the $5,000 itemisation floor, grants to individuals, and grants reported on other schedules. Every figure below describes the itemised rows only.
By grant size · FY2025
- Under $10k20 grants · $28k
- $10k–50k14 grants · $242k
- $50k–250k10 grants · $732k
- $250k+2 grants · $2.8M
| Recipient | Amount |
|---|---|
| Feinstein Institute for Medical Research | $2,500,000 |
| Feinstein Institute for Medical Research | $300,000 |
| Jewish Federation of Palm Beach County | $150,000 |
| The Washington Institute | $100,000 |
| Central Fund of Israel | $100,000 |
| American Israel Education Foundation | $75,000 |
| Operation Lifeshield | $56,500 |
| Anti-Defamation League | $50,000 |
| New Museum of Contemporary Art | $50,000 |
| Joe DiMaggio Children's Hospital Foundation | $50,000 |
| American Friends of Leket Israel | $50,000 |
| American Ballet Theater | $50,000 |
| PEF: Israel Endowment Funds, Inc. | $25,000 |
| Gift of Life Bone Marrow | $25,000 |
| Berkshire Hills Eisenberg Camp | $25,000 |
Who you back again
Which organizations you funded more than once, and which you funded a single time. Each grantee is matched to its own filings.
90 repeat relationships — 38 still active in FY2025, 52 since wound down; 5 grantees were first funded in FY2025 (too recent to call).
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, 98% of grant dollars renewed an existing relationship; $84k went to new ones.
Where new relationships form · theme of each grantee’s first grant
First-time = a grantee’s first year in your filing window; renewed = funded in an earlier year too. As a portfolio matures the renewed share naturally climbs — once funded, an org stays “renewable” — so the signal is the years that buck it (a new-grantee intake wave). The earliest year is left-censored: relationships that predate the data read as “new.” Theme is the grantee’s IRS cause.
Backed again, and grew
- TFTHE FEINSTEIN INSTITUTES FOR MEDICAL RESEARCH6× · 2017–2025 · $16M · revenue +42%
- NMNew Museum of Contemporary Art6× · 2019–2025 · $1.7M · revenue +2%
- WIWASHINGTON INSTITUTE FOR NEAR EAST POLICY7× · 2017–2025 · $625k · revenue +51%
Funded once
- FIFeinstein Institutes for Med Researchone grant, 2020 · $2.5M
- MSMt Sinai Medical Centerone grant, 2017 · $200k
ICAHN SCHOOL OF MEDICINE AT MOUNT SINAIone grant, 2022 · $200k · revenue +19%
Repeat = funded in two or more distinct years; growth and survival are read from each grantee’s own subsequent IRS filings.
The map has a center of gravity: the average direction from the rest of the sector toward the organizations the foundation funds — the shape of its giving. Scoring every nonprofit along that direction surfaces the ones that look most like the portfolio. These are the closest matchesthat aren’t grantees — a resemblance in what they say they do, not a recommendation.
The institute for advanced study (the institute) is one of the world's leading centers for theoretical research and intellectual inquiry. see schedule o.
Long island jewish medical center is part of the northwell health ("northwell"), which strives to improve the health of the communities it serves and is committed to providing the highest quality clinical care; educating the current and…
Nyu is a private university with approximately 60,000 matriculating students in 20 schools and institutes. nyu's primary missions are education, research and scholarship, and patient care.
Operate a state-of-the-art, world-class genomic research center that creates and uses advanced genomics to understand the genetic basis of disease. for more information, see schedule o.
Committed to exceptional healthcare quality for all and actively engaged with our community, einstein drives scientific discovery and educates compassionate leaders in health and science.
Lenox hill hospital is part of northwell health ("northwell"), which strives to improve the health of the communities it serves and is committed to providing the highest quality clinical care; educating the current and future generations…
The mission of the institute is to translate basic genetic and molecular mechanisms of schizophrenia and related developmental brain disorders into clinical advances that change the lives of affected individuals. it is catalyzing a new…
The museum of jewish heritage - a living memorial to the holocaust is new york's contribution to the global responsibility to never forget. see schedule o for additional information.
The weizmann institute of science, located in rehovot, israel, is one of the worlds top-ranking, multidisciplinary research institutions. at any one time, several thousand scientists, staff and students are involved in hundreds of research…
Staten island university hospital is an affiliate within northwell health, inc. ("northwell"), which strives to improve the health of the communities it serves and is committed to providing the highest quality clinical care; educating the…
South shore university hospital is part of northwell health ("northwell"), which strives to improve the health of the communities it serves and is committed to providing the highest quality clinical care; educating the current and future…
The Morgan Library & Museum celebrates and shares the history and process of human creativity from antiquity to the present day through the preservation, study, and interpretation of a dynamic and growing collection.
For reference, the grantee most central to the portfolio’s shape is Jewish Federation of Palm Beach County Inc and the most unlike its peers is Wildlife Conservation Society. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
For each theme you fund, this compares how the sector’s money is shifting with how your own giving is shifting.
Sector change and giving change are each shown relative to their own range, growing (right) or shrinking (left); both normalized, so inflation isn’t mistaken for growth.
Your grantees are a median of 40 years old; the field is 18. You back the established end — and your money leans older still.
The field is 19% startups (under 5 years old) — 1% of your grantees by number, and just 0% of your money.
The orgs you fund almost never close — 2% lost their exemption, against 10% of the field you don’t fund.
Age = years since IRS exemption (a founding proxy). “Closed” = auto-revocation for 3 years of non-filing — a floor on closure, not proof, and bigger established orgs lapse least. Association, not causation.
107 grantees tracked through their own filings, 2017–2025.
Each one resolved to its own IRS returns and tracked year by year — your grant beside their revenue from every source. Association, dated; never a causal claim.
Counted here: distinct organizations you funded across 2017–2025, not grant rows in a single year — so this will not match the grant count on the cover. 107 of the 187 grantees resolved in that span have returns of their own we could reconcile; the rest are funded organizations whose filings we could not track year by year.
Where your money sits — by cause, then by grantee
Each org by its size and your share of it — top-left is where you’re load-bearing
Go grantee by grantee — a decade per org, and how each moved after you funded them
A decade per grantee — revenue shaded, your grants as bars, all rows on one timeline.
- Who funds THE FEINSTEIN INSTITUTES FOR MEDICAL RESEARCH ↗
- Who funds New Museum of Contemporary Art ↗
- Who funds WASHINGTON INSTITUTE FOR NEAR EAST POLICY ↗
- Who funds BALLET THEATRE FOUNDATION INC ↗
- Who funds NEW YORK-PRESBYTERIAN FUND INC ↗
- Who funds AMERICAN ISRAEL EDUCATION FOUNDATION INC ↗
- Who funds JEWISH FEDERATION OF PALM BEACH COUNTY INC ↗
- Who funds Foundation for the Defense of Democracies Inc ↗
- Who funds THE MOUNT SINAI MEDICAL CENTER ↗
- Who funds FRIENDS OF THE ISRAEL DEFENSE FORCES ↗
- Who funds ANTI-DEFAMATION LEAGUE ↗
- Who funds AMERICAN FRIENDS OF LEKET ISRAEL INC ↗
- Who funds NORTHWELL HEALTH FOUNDATION ↗
- Who funds PEF ISRAEL ENDOWMENT FUNDS INC ↗
- Who funds Feinstein Health Fund Inc ↗
- Who funds ICAHN SCHOOL OF MEDICINE AT MOUNT SINAI ↗
- Who funds THE JEWISH MUSEUM ↗
- Who funds RUTGERS UNIVERSITY FOUNDATION ↗
- Who funds Central Fund of Israel ↗
- Who funds JOE DIMAGGIO CHILDREN'S HOSPITAL FOUNDATION INC ↗
- Who funds HEAD INJURY ASSOCIATION INC ↗
- Who funds The Safe Center LI Inc ↗
- Who funds AMERICAN FRIENDS OF THE ISRAEL MUSEUM ↗
- Who funds My Sisters Place Inc ↗
- Who funds SHUVU RETURN INC ↗
The grantmakers whose grantees overlap with yours far more than size alone predicts. Each orbits closer the stronger the alignment; the arcs between them show where they also fund each other. Here it reads as a tightly interlocked camp — most of these funders back each other's grantees too.
Open a dossier: Jewish Communal Fund · The Goldman Sachs Charitable Gift Fund · Mitzi & Warren Eisenberg Family Foundation Inc · The New York Community Trust · The Bahnik Foundation Inc · Jeffrey & Debra Feinstein Foundation · The Roger Rechler Foundation · Rita and Frank Castagna Family Foundation Inc · Robert & Roni Lemle Family Foundation · The Marie and Paul Napoli Foundation · Rechler Philanthropy · The Donald and Barbara Zucker Family Foundation
Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. A research starting point: overlap is association, not proof of shared intent.
Warm introductions · Powered by PlinthPlus
How do I get to Susan & Leonard Feinstein Foundation?
Find your warmest path to Susan & Leonard Feinstein Foundation through trustees and officers whose names appear on both boards. Search for your organization and Plinth traces the shortest route it can evidence.
Each link is a name appearing on two organizations’ public IRS 990 filings, matched on that name and, where the filings support it, on location. A same-state match has geographic support, which is a second matching feature rather than confirmation that the two are one person; a cross-state one is the likeliest to be two people who share a name. Every hop shows its tier, low-confidence and distant paths are held back rather than guessed, and it is worth confirming the person before you use the introduction.