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Susan & Leonard Feinstein Foundation at a glance

· 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.

$4.2M
Granted FY2025still arriving
46
Grants FY2025still arriving
5
States reached
$2.5M
Largest
01What it fundsRead
02Its granteesRead
03Its fieldRead
04Through PlinthRead
01What it funds
0195% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2025.

Health$21MArts & Culture$3.8MInternational$2.9MPhilanthropy$749kReligion$511kEducation$392kCivil Rights$354kFood & Nutrition$345kOther$0
02FY2025 · 46 grants

Where the money goes

Grants by size, and the largest recipients.

How this is measured
The 46 grants below total $3,801,400, the rows itemized in this filing. The $4,226,750 headline is the total grant expense on the return; the other $425,350 is giving the schedule does not break out (grants under the $5,000 itemization floor, grants to individuals, grants on other schedules). Every figure below describes the itemized rows only.

By grant size · FY2025

  • Under $10k20 grants · $28k
  • $10k–50k14 grants · $242k
  • $50k–250k10 grants · $732k
  • $250k+2 grants · $2.8M
$10,000
Median grant
5
States reached
$30M
Total assets
Largest grants
RecipientAmount
Feinstein Institute for Medical Research$2,500,000
Feinstein Institute for Medical Research$300,000
Jewish Federation of Palm Beach County$150,000
Central Fund of Israel$100,000
The Washington Institute$100,000
American Israel Education Foundation$75,000
Operation Lifeshield$56,500
Joe DiMaggio Children's Hospital Foundation$50,000
American Ballet Theater$50,000
Anti-Defamation League$50,000
New Museum of Contemporary Art$50,000
American Friends of Leket Israel$50,000
American Friends of Shalva$25,000
Gift of Life Bone Marrow$25,000
PEF: Israel Endowment Funds, Inc.$25,000
02Its grantees
repeat funding

Who it funds again

Organizations funded in more than one year, against those funded once.

86%of every dollar goes to organizations it has funded before.
$27M · 90 repeat orgs$4.2M to everyone else

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

Re-uppedFunded once

Organizations

90
89

Total granted

$27M
$4.1M

Median revenue growth · since first grant

+27%
+28%

Still filing today

68%
40%

New vs renewed · share of each year

In FY2025, 98% of grant dollars renewed an existing relationship; $84k went to new ones.

50%100%’17’19’20’22’23’24’25
RenewedFirst-time

Where new relationships form · theme of each grantee’s first grant

’17’19’20’22’23’24’25
Arts & CultureHealthHuman ServicesInternationalPhilanthropyEducationOther
How this is measured
First-time means a grantee’s first year in the filing window; renewed means funded in an earlier year too. The renewed share climbs naturally as a portfolio matures, so the signal is a year that bucks it (a wave of new grantees). 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

  • TF
    THE FEINSTEIN INSTITUTES FOR MEDICAL RESEARCH
    6× · 2017–2025 · $16M · revenue +42%
  • NM
    New Museum of Contemporary Art
    6× · 2019–2025 · $1.7M · revenue +2%
  • WI
    WASHINGTON INSTITUTE FOR NEAR EAST POLICY
    7× · 2017–2025 · $625k · revenue +51%

Funded once

  • FI
    Feinstein Institutes for Med Research
    one grant, 2020 · $2.5M
  • ICAHN SCHOOL OF MEDICINE AT MOUNT SINAI
    one grant, 2022 · $200k · revenue +19%
  • MS
    Mt Sinai Medical Center
    one grant, 2017 · $200k
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.

03Its field

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.

1
Institute for Advanced Study - Louis Bamberger & Mrs Felix Fuld Foundation

The institute for advanced study (the institute) is one of the world's leading centers for theoretical research and intellectual inquiry. see schedule o.

Science & Tech
2
Long Island Jewish Medical Center

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…

Health
3
New York University

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.

Education
4
New York Genome Center Inc

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.

Health
5
Albert Einstein College of Medicine

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.

Education
6
Lenox Hill Hospital

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…

Health
7
The Lieber Institute Inc

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…

Health
8
Museum of Jewish Heritage a Living Memorial to the Holocaust

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.

Arts & Culture
9
Weizmann Institute of Science

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…

Science & Tech
10
Staten Island University Hospital

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…

Health
11
South Shore University Hospital

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…

Health
12
The Pierpont Morgan Library

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.

Education
How this is measured
The grantee most central to the portfolio’s shape is Jewish Federation of Palm Beach County Inc; 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.
03the grantee network

107 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. 107 of the 187 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.

0
Load-bearing (≥25% of a budget)
11
Early backer (in before they grew)
105/107
Grantees still filing
75/107
Grew since first funded

Where the money sits, by cause and then by grantee

THE FEINSTEIN INSTITUTES FOR MEDICAL RESEARCH: $15,650,000 · HealthTHE FEINSTEIN INSTITUTES FOR MEDICAL RESEARCHNEW YORK-PRESBYTERIAN FUND INC: $600,000 · Health+19 more: $1,198,750 · Health+19 moreFeinstein Institutes for Med Research: $2,500,000 · OtherFeinstein Institutes for…New Museum of Cont Art: $910,000 · OtherNew Museum of Cont ArtNY Presbyterian Fund, Inc.: $400,000 · OtherNY Presbyterian Fund, In…American Friends of Shalva: $390,000 · OtherAmerican Friends of Shal…Feinstein Institute for Medical Research Northwell Health Foundation: $350,000 · Other+104 more: $2,152,290 · Other+104 moreNew Museum of Contemporary Art: $1,705,000 · Arts & CultureNew Museum…BALLET THEATRE FOUNDATION INC: $605,000 · Arts & CultureBALLET THE…THE JEWISH MUSEUM: $161,500 · Arts & CultureTHE JEWISH…+20 more: $382,900 · Arts & Culture+20 moreWASHINGTON INSTITUTE FOR NEAR EAST POLICY: $625,000 · InternationalAMERICAN ISRAEL EDUCATION FOUNDATION INC: $525,000 · InternationalFoundation for the Defense of Democracies Inc: $450,000 · InternationalFRIENDS OF THE ISRAEL DEFENSE FORCES: $380,250 · InternationalCentral Fund of Israel: $175,000 · International+5 more: $140,800 · InternationalJEWISH FEDERATION OF PALM BEACH COUNTY INC: $575,000 · PhilanthropyAMERICAN FRIENDS OF LEKET ISRAEL INC: $395,000 · PhilanthropyPEF ISRAEL ENDOWMENT FUNDS INC: $207,030 · PhilanthropySHUVU RETURN INC: $60,000 · PhilanthropyCenter for Entrepreneurial Jewish Philanthropy Inc: $50,000 · Philanthropy+8 more: $122,000 · PhilanthropyICAHN SCHOOL OF MEDICINE AT MOUNT SINAI: $200,000 · EducationRUTGERS UNIVERSITY FOUNDATION: $150,000 · EducationWASHINGTON UNIVERSITY: $50,000 · EducationBARD COLLEGE: $35,000 · EducationTHE BENJAMIN PRIVATE SCHOOL INC: $35,000 · EducationFRIENDS OF RODEPH SHOLOM SCHOOL INC: $30,000 · EducationGEORGETOWN UNIVERSITY: $25,000 · Education+3 more: $6,000 · EducationANTI-DEFAMATION LEAGUE: $350,000 · Civil Rights
Health$17,448,750Other$6,702,290Arts & Culture$2,854,400International$2,296,050Philanthropy$1,409,030Education$531,000Civil Rights$350,000

Each grantee by its size and the funder’s share of it; top left is load-bearing

25%50%75%100%$100k$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetTHE FEINSTEIN INSTITUTES FOR MEDICAL RESEARCH: $15,650,000 over 6y, 2.3% of budgetNew Museum of Contemporary Art: $1,705,000 over 6y, 2.1% of budgetWASHINGTON INSTITUTE FOR NEAR EAST POLICY: $625,000 over 7y, 0.7% of budgetBALLET THEATRE FOUNDATION INC: $605,000 over 7y, 0.7% of budgetNEW YORK-PRESBYTERIAN FUND INC: $600,000 over 3y, 0.1% of budgetJEWISH FEDERATION OF PALM BEACH COUNTY INC: $575,000 over 7y, 0.3% of budgetAMERICAN ISRAEL EDUCATION FOUNDATION INC: $525,000 over 7y, 0.1% of budgetFoundation for the Defense of Democracies Inc: $450,000 over 5y, 0.5% of budgetTHE MOUNT SINAI MEDICAL CENTER: $400,000 over 2y, 8.0% of budgetAMERICAN FRIENDS OF LEKET ISRAEL INC: $395,000 over 7y, 0.5% of budgetFRIENDS OF THE ISRAEL DEFENSE FORCES: $380,250 over 5y, 0.1% of budgetANTI-DEFAMATION LEAGUE: $350,000 over 7y, 0.1% of budgetNORTHWELL HEALTH FOUNDATION: $242,750 over 5y, 0.2% of budgetPEF ISRAEL ENDOWMENT FUNDS INC: $207,030 over 6y, 0.0% of budgetFeinstein Health Fund Inc: $200,000 over 2y, 2.7% of budgetICAHN SCHOOL OF MEDICINE AT MOUNT SINAI: $200,000 over 1y, 0.0% of budgetCentral Fund of Israel: $175,000 over 3y, 0.1% of budgetTHE JEWISH MUSEUM: $161,500 over 6y, 0.4% of budgetRUTGERS UNIVERSITY FOUNDATION: $150,000 over 3y, 0.0% of budgetJOE DIMAGGIO CHILDREN'S HOSPITAL FOUNDATION INC: $136,000 over 6y, 0.3% of budgetHEAD INJURY ASSOCIATION INC: $105,000 over 1y, 0.4% of budgetThe Safe Center LI Inc: $101,000 over 2y, 0.8% of budgetAMERICAN FRIENDS OF THE ISRAEL MUSEUM: $92,500 over 7y, 0.2% of budgetMy Sisters Place Inc: $70,000 over 5y, 0.2% of budgetSHUVU RETURN INC: $60,000 over 2y, 0.7% of budgetBIRTHRIGHT ISRAEL FOUNDATION: $60,000 over 6y, 0.0% of budgetMuseum of Modern Art: $56,000 over 6y, 0.0% of budgetAMERICAN FRIENDS OF YAD ELIEZER: $50,000 over 5y, 0.0% of budgetWildlife Conservation Society: $50,000 over 1y, 0.0% of budgetGIFT OF LIFE MARROW REGISTRY INC: $50,000 over 1y, 0.4% of budgetPORTLEDGE SCHOOL: $50,000 over 2y, 0.1% of budgetWASHINGTON UNIVERSITY: $50,000 over 2y, 0.0% of budgetThe United States Holocaust Memorial Museum: $42,000 over 4y, 0.0% of budgetTown of Palm Beach United Way Inc: $40,000 over 4y, 0.1% of budgetBARD COLLEGE: $35,000 over 6y, 0.0% of budgetTHE BENJAMIN PRIVATE SCHOOL INC: $35,000 over 2y, 0.0% of budgetWHITNEY MUSEUM OF AMERICAN ART: $30,000 over 6y, 0.0% of budgetFRIENDS OF RODEPH SHOLOM SCHOOL INC: $30,000 over 2y, 1.0% of budgetSOLOMON R GUGGENHEIM FOUNDATION: $30,000 over 5y, 0.0% of budgetThe Carnegie Hall Society Inc: $30,000 over 3y, 0.0% of budgetLONG ISLAND CHILDREN'S MUSEUM: $30,000 over 3y, 0.2% of budgetJupiter Medical Center Inc: $28,000 over 3y, 0.0% of budgetGEORGETOWN UNIVERSITY: $25,000 over 1y, 0.0% of budgetMALTZ JUPITER THEATRE INC: $25,000 over 1y, 0.2% of budgetNicklaus Children's Health Care Foundation: $20,000 over 3y, 0.1% of budgetJEWISH FEDERATION OF GREATER METROWEST NJ: $20,000 over 1y, 0.1% of budgetHUNTINGTON FINE ARTS INSTITUTE LTD: $20,000 over 2y, 18% of budgetAmerican Museum of Natural History: $16,000 over 6y, 0.0% of budget
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 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 JEWISH FEDERATION OF PALM BEACH COUNTY INC ↗
  • Who funds AMERICAN ISRAEL EDUCATION FOUNDATION INC ↗
  • Who funds Foundation for the Defense of Democracies Inc ↗
  • Who funds THE MOUNT SINAI MEDICAL CENTER ↗
  • Who funds AMERICAN FRIENDS OF LEKET ISRAEL INC ↗
  • Who funds FRIENDS OF THE ISRAEL DEFENSE FORCES ↗
  • Who funds ANTI-DEFAMATION LEAGUE ↗
  • 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 Central Fund of Israel ↗
  • Who funds THE JEWISH MUSEUM ↗
  • Who funds RUTGERS UNIVERSITY FOUNDATION ↗
  • 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 ↗

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 tightly interlocked group: most of these funders back each other's grantees too.

Jewish Communal FundThe Goldman Sachs Cha…Mitzi & Warren Eisenb…The New York Communit…The Bahnik Foundation…Jeffrey & Debra Feins…The Roger Rechler Fou…Rita and Frank Castag…Robert & Roni Lemle F…The Marie and Paul Na…Rechler PhilanthropyThe Donald and Barbar…
Jewish Communal FundNY27.2× affinity19 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

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

How this is measured
Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. Overlap is association, not proof of shared intent.
04Through Plinth

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.

On method. Every financial figure here is read from IRS e-file XML, the funder’s own 990/990-PF, and from the multi-year returns of the 187 grantees we resolved, each linked to its source. Grantee outcomes are each organization’s own program-service reporting (Form 990, Part III), read as association with funding, never as caused by it. Low-confidence name matches are suppressed rather than guessed. How we build these →

How this is measured
Each figure carries one of six labels. Filed is what the funder reported on its return. Official is another government record about an organization, such as a federal award or a charity register, joined by name where no shared identifier exists. Resolved is an identity we worked out where the filing named a recipient without an EIN, kept only above a measured confidence threshold. Computed is arithmetic over those, like themes, portfolio clusters and co-funder strength. Context is a statistic about a place rather than about an organization, which is what the need overlay is: it describes the area a grantee’s address sits in, not where its work lands. Inferred is drawn by a model from text, like the partnerships read out of public news and organization websites. Each is labeled where it appears.

Generated from the IRS Form 990-PF e-file return for fiscal year 2025, released 2025. Filings run roughly 12 to 24 months behind; figures are dated accordingly.

Source object · view filing

Play a game based on Susan & Leonard Feinstein’s filings →

More from the funding graph

The unnamed billions
grants reported with no recipient in the public record
The regranting layer
51% of grant dollars land in the regranting layer
The DAF merry-go-round
$9.7B circulates between donor-advised funds
The endowment market
who holds foundation money, and what just moved
The camps
funders cluster by geography, not ideology
By state
where grant money is based, and what stays home