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Leon Lowenstein Foundation Inc at a glance

· Private foundation

Leon Lowenstein Foundation Inc

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.

$8.0M
Granted FY2025still arriving
103
Grants FY2025still arriving
17
States reached
$700k
Largest
01What it fundsRead
02The needRead
03Its granteesRead
04Its fieldRead
05Through PlinthRead
01What it funds
0197% classified

What it funded, over time

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

Education$18MHealth$14MEnvironment$12MFood & Nutrition$1.9MArts & Culture$1.7MPhilanthropy$1.4MCommunity Improvement$1.3MYouth Development$1.2MOther$0
02FY2025 · 103 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2025

  • Under $10k8 grants · $45k
  • $10k–50k61 grants · $1.2M
  • $50k–250k24 grants · $3.3M
  • $250k+10 grants · $3.5M
$25,000
Median grant
17
States reached
$218M
Total assets
Largest grants
RecipientAmount
Johns Hopkins University$700,000
National Association of Community Health Centers$500,000
Mobile Health Care Association$450,000
CitySchools Collaborative$300,000
The Family Van - A Program of Harvard Medical School$300,000
ClimateHaven Inc$250,000
Groundswell$250,000
Amalgamated Foundation$250,000
Coalition for Green Capital$250,000
Invest in Our Future$250,000
Learn to Be Foundation$225,000
Essential Hospitals Institute$225,000
City Year$200,000
Arizona State University Foundation$200,000
Lawyers for Good Government Inc$200,000
02The need
03

Does the money reach high-need areas?

Each grant placed by the hardship in its grantee’s ZIP, against the area’s typical level.

show:

Its human-services grants (FY17–25, $2.3M) land where the poverty rate runs at 13%, against an area that typically sits at 10%. 86% of those dollars go to grantees based in above-average-need neighborhoods. Most of its grants land in higher-need ZIPs.

area typical 10%Building Relationships Inc dba Spill the Honey: $20k → 8%National Health Care for the Homeless Council: $25k → 14%UNION RESCUE MISSION: $5k → 14%Squash Haven: $10k → 12%Hour Children Inc: $20k → 13%Squash Haven: $10k → 12%Institute for Nonprofit Practice: $40k → 7%Tides Center: $235k → 10%Hour Children Inc: $15k → 13%Squash Haven: $10k → 12%Institute for Nonprofit Practice: $40k → 7%Hour Children Inc: $15k → 13%Squash Haven: $6k → 12%LEAP Innovations: $250k → 14%Institute for Nonprofit Practice: $40k → 7%HOUR CHILDREN INC: $10k → 13%Squash Haven: $5k → 12%LEAP Innovations: $175k → 14%Institute for Nonprofit Practice: $30k → 7%Hour Children Inc: $10k → 13%Squash Haven: $5k → 12%LEAP Innovations: $75k → 14%Knox County Homeless Coalition: $20k → 11%Institute for Nonprofit Practice: $30k → 7%Institute for Nonprofit Practice: $30k → 7%Area Interfaith Outreach: $15k → 11%Institute for Nonprofit Practice: $15k → 7%Institute for Nonprofit Practice: $13k → 7%Jewish Commmunity Centers of Great Boston Inc: $10k → 8%INSTITUTE FOR NONPROFIT PRACTICE: $8k → 7%Area Interfaith Outreach: $13k → 11%Knox County Homeless Coalition: $10k → 11%Crossroads Rhode Island - 2: $15k → 14%The FLY Initiative: $8k → 14%Jewish Alliance of Greater Rhode Island: $10k → 14%YWCA Greenwich: $6k → 9%JCC OF MANHATTAN: $100k → 17%Marlene Meyerson JCC Manhattan: $100k → 17%SCAN GROUP: $225k → 14%SCAN GROUP: $225k → 14%The Jewish Community Center in Manhattan: $30k → 17%SCAN GROUP: $110k → 14%The Jewish Community Center in Manhattan: $30k → 17%Israeli American Council: $10k → 14%The Jewish Community Center in Manhattan: $25k → 17%The Jewish Community Center in Manhattan: $25k → 17%The Jewish Community Center in Manhattan: $25k → 17%The Jewish Community Center in Manhattan: $15k → 17%0%20%40%50%more need →
grant to an above-average-need area below average· circle size = grant amount
How this is measured
Matched: human-services grants are those whose grantee’s IRS cause code is Human Services. Placed by people below the poverty line in the grantee’s ZIP, averaged from the tracts in that ZIP.

Which US states its grants reach

ME
VT
WA
MN
IL
WI
MI
NY
MA
OR
OH
PA
NJ
CT
RI
CA
UT
CO
MO
VA
MD
AZ
TN
DC
LA
GA
TX
FL
How this is measured
US grants placed by each grantee’s ZIP, which can differ from where services are delivered. Need from public data (U.S. Census/ACS, CDC PLACES, Eviction Lab, USDA), shown as context about the area, never attributed to the funder’s giving.
03Its grantees
repeat funding

Who it funds again

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

78%of every dollar goes to organizations it has funded before.
$43M · 152 repeat orgs$12M to everyone else

Grantees it renews have grown median revenue +36% since the first grant, against +16% for those funded once.

152 repeat relationships: 62 still active in FY2025, 90 since wound down; 37 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

152
149

Total granted

$43M
$9.0M

Median revenue growth · since first grant

+36%
+16%

Still filing today

80%
72%

New vs renewed · share of each year

In FY2025, 60% of grant dollars renewed an existing relationship; $3.0M went to new ones.

50%100%’17’18’19’20’21’22’23’24’25
RenewedFirst-time

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

’17’18’19’20’21’22’23’24’25
EducationHealthEnvironmentArts & CultureHuman ServicesInternationalOther
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

  • JOHNS HOPKINS UNIVERSITY
    7× · 2018–2025 · $3.5M · revenue +51%
  • NATURAL RESOURCES DEFENSE COUNCIL INC
    4× · 2017–2022 · $1.7M · revenue +41%
  • NATIONAL ASSOCIATION OF COMMUNITY HEALTH CENTERS INC
    5× · 2021–2025 · $1.5M · revenue +27%

Funded once

  • SS
    SUMMIT SCHOOL
    one grant, 2017 · $850k
  • SHARE OUR STRENGTH
    one grant, 2020 · $400k · revenue -44%
  • NG
    Next Generation Learning Challenges
    one grant, 2020 · $250k
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.

04Its 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
University of New Haven

The University of New Haven is a student-centered comprehensive university with an emphasis on excellence in liberal arts and professional education. Our mission is to prepare our students to lead purposeful and fulfilling lives in a…

Education
2
Boston Architectural College

The bac is committed to provide excellence in design education grounded in practice and accessible to diverse communities.

—
3
United States Naval Institute

Provide an independent forum for those who dare to read, think, speak, and write to advance the professional, literary, and scientific understanding of sea power and other issues critical to global security.

—
4
Massachusetts Institute of Technology

The mission of mit is to advance knowledge and educate students in science, technology, and other areas of scholarship that will best serve the nation and the world in the 21st century.

Education
5
The Common Application Inc

The common application is a not-for-profit membership organization of over 1,100 colleges and universities across the globe committed to access, equity, and integrity in the college admission process. every year, over 1.5 million students…

Education
6
Central Indiana Corporate Partnership Inc

Central indiana corporate partnership (cicp) is an alliance of indiana's business and research university leaders coming together to foster long-term prosperity for the region. cicp's mission is to transform the economy of indiana in order…

Community Improvement
7
New York School of Interior Design

New york school of interior design provides the most innovative, immersive, and transformative interior design education in the world, demonstrating the impact of professionally designed interiors on the health, happiness, and well-being…

Education
8
Northeast College of Health Sciences

Northeast college of health sciences (the college) is committed to academic excellence, leadership, and professional best practices in the health sciences.

Education
9
American Gas Association

American gas association's (the association) mission is to develop and advocate for informed, innovative, and durable policy that fulfills our nation's energy needs, environmental aspirations and economic potential. we are committed to…

—
10
Manhattanville University

To educate students to be ethical and socially responsible leaders in a global community.

Education
11
The Union of Concerned Scientists Inc

The union of concerned scientists puts rigorous, independent science into action, developing solutions and advocating for a healthy, safe, and just future.

International
12
The Trustees of Princeton University

Research, education and general - princeton university is a private not-for-profit, non-sectarian institution of higher learning with approximately 5,700 undergraduate and 3,300 graduate students. 2,500 students graduated in the 2024-2025…

Education
How this is measured
The grantee most central to the portfolio’s shape is Transcend Inc; the most unlike its peers is The Tom Gold Dance Foundation 51 West 81ST Street. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
04the grantee network

273 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. 273 of the 351 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.

3
Load-bearing (≥25% of a budget)
53
Early backer (in before they grew)
269/273
Grantees still filing
182/273
Grew since first funded

Where the money sits, by cause and then by grantee

Mobile Health Care Association: $3,130,000 · OtherMobile Health Care AssociationThe Family Van - A Program of Harvard Medical Scho: $1,612,500 · OtherThe Family Van - A Program of Harvard Medical SchoCITY YEAR INC: $1,450,000 · OtherCITY YEAR INCNYU Langone Health: $957,000 · OtherRocky Mountain Institute: $888,000 · Other+105 more: $17,652,360 · Other+105 moreJOHNS HOPKINS UNIVERSITY: $3,550,000 · EducationJOHNS HOPKINS UNIVERSIT…CITYSCHOOLS COLLABORATIVE: $1,300,000 · EducationCITYSCHOOLS COLLABORATI…President and Fellows of Harvard College: $1,137,500 · EducationPresident and Fellows o…EDUCATION EVOLVING: $615,000 · EducationPARTNERSHIP FOR LOS ANGELES SCHOOLS: $500,000 · EducationKnowledgeworks Foundation: $475,000 · EducationENDICOTT COLLEGE: $440,000 · EducationMIGHTY WRITERS: $415,000 · Education+21 more: $3,408,925 · Education+21 moreNATURAL RESOURCES DEFENSE COUNCIL INC: $1,675,000 · EnvironmentNATURAL RESOURCES …ENVIRONMENTAL DEFENSE FUND INCORPORATED: $1,400,000 · EnvironmentENVIRONMENTAL DEFE…COALITION FOR GREEN CAPITAL D/B/A AMERICAN GREEN BANK CONSORTIUM: $900,000 · EnvironmentCOALITION FOR GREE…URBAN SUSTAINABILITY DIRECTORS NETWORK: $875,000 · EnvironmentURBAN SUSTAINABILI…Solar United Neighbors Inc: $850,000 · EnvironmentSolar United Neigh…ENVIRONMENTAL WORKING GROUP: $850,000 · EnvironmentENVIRONMENTAL WORK…+16 more: $2,700,000 · Environment+16 moreNATIONAL ASSOCIATION OF COMMUNITY HEALTH CENTERS INC: $1,515,000 · HealthNEW YORK-PRESBYTERIAN FUND INC: $1,000,000 · HealthSchool-Based Health Alliance: $400,000 · HealthCOMMUNITY HEALTH CENTER CAPITAL FUND INC: $250,000 · HealthBETH ISRAEL DEACONESS MEDICAL CENTER INC: $237,000 · HealthCEDARS-SINAI MEDICAL CENTER: $175,000 · Health+10 more: $565,000 · HealthSCAN GROUP: $560,000 · Human ServicesLEAP Innovations: $500,000 · Human ServicesTHE JEWISH COMMUNITY CENTER IN MANHATTAN INC: $350,000 · Human ServicesINSTITUTE FOR NONPROFIT PRACTICE INC: $245,000 · Human ServicesTIDES CENTER: $235,000 · Human ServicesTHROUGHLINE LEARNING: $150,000 · Human Services+5 more: $236,500 · Human ServicesTHE CAPITAL GOOD FUND: $475,000 · Community ImprovementNEW PROFIT INC: $319,440 · Community ImprovementVIRGINIA ORGANIZING INC: $250,000 · Community ImprovementLAWYERS FOR GOOD GOVERNMENT INC: $200,000 · Community ImprovementTeachers Supporting Teachers: $125,000 · Community ImprovementVENTURE FOR AMERICA INC: $105,000 · Community ImprovementFeeding America: $775,000 · Food & NutritionFOOD RESCUE US INC: $200,000 · Food & NutritionMARTHA'S TABLE INC: $100,000 · Food & NutritionRHODE ISLAND COMMUNITY FOOD BANK ASSOCIATION: $90,500 · Food & NutritionSALEM PANTRY INC: $52,500 · Food & Nutrition+1 more: $35,000 · Food & Nutrition
Other$25,689,860Education$11,841,425Environment$9,250,000Health$4,142,000Human Services$2,276,500Community Improvement$1,474,440Food & Nutrition$1,253,000

Showing the 200 largest grantees by grant value.

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

25%50%75%100%$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetJOHNS HOPKINS UNIVERSITY: $3,550,000 over 7y, 0.0% of budgetNATURAL RESOURCES DEFENSE COUNCIL INC: $1,675,000 over 4y, 0.5% of budgetNATIONAL ASSOCIATION OF COMMUNITY HEALTH CENTERS INC: $1,515,000 over 5y, 1.1% of budgetCITY YEAR INC: $1,450,000 over 4y, 0.6% of budgetENVIRONMENTAL DEFENSE FUND INCORPORATED: $1,400,000 over 3y, 0.3% of budgetCITYSCHOOLS COLLABORATIVE: $1,300,000 over 5y, 7.0% of budgetPresident and Fellows of Harvard College: $1,137,500 over 5y, 0.0% of budgetNEW YORK-PRESBYTERIAN FUND INC: $1,000,000 over 2y, 0.2% of budgetCOALITION FOR GREEN CAPITAL D/B/A AMERICAN GREEN BANK CONSORTIUM: $900,000 over 6y, 10% of budgetRocky Mountain Institute: $888,000 over 4y, 0.4% of budgetURBAN SUSTAINABILITY DIRECTORS NETWORK: $875,000 over 5y, 3.8% of budgetSolar United Neighbors Inc: $850,000 over 4y, 4.3% of budgetENVIRONMENTAL WORKING GROUP: $850,000 over 2y, 4.9% of budgetFeeding America: $775,000 over 3y, 0.0% of budgetPowerMyLearning Inc: $700,000 over 4y, 4.1% of budgetEDUCATION EVOLVING: $615,000 over 4y, 30% of budgetINCLUSIV INC: $565,000 over 3y, 1.2% of budgetSCAN GROUP: $560,000 over 3y, 2.8% of budgetEYE TO EYE INC DBA THE NEURODIVERSITY ALLIANCE: $525,000 over 4y, 7.7% of budgetLEAP INC: $500,000 over 2y, 4.4% of budgetPARTNERSHIP FOR LOS ANGELES SCHOOLS: $500,000 over 3y, 1.1% of budgetLEAP Innovations: $500,000 over 3y, 6.9% of budgetESSENTIAL HOSPITALS INSTITUTE: $475,000 over 2y, 10% of budgetTHE CAPITAL GOOD FUND: $475,000 over 2y, 3.7% of budgetTHE NATIONAL MENTORING PARTNERSHIP INC: $475,000 over 2y, 3.6% of budgetKnowledgeworks Foundation: $475,000 over 3y, 3.7% of budgetWORLD RESOURCES INSTITUTE: $450,000 over 2y, 0.1% of budgetENDICOTT COLLEGE: $440,000 over 9y, 0.1% of budgetMIGHTY WRITERS: $415,000 over 2y, 3.0% of budgetSchool-Based Health Alliance: $400,000 over 3y, 5.6% of budgetSHARE OUR STRENGTH: $400,000 over 1y, 0.3% of budgetLITERACY TRUST INC: $370,000 over 2y, 11% of budgetBOYS & GIRLS CLUB OF GREENWICH: $351,000 over 9y, 0.9% of budgetTHE JEWISH COMMUNITY CENTER IN MANHATTAN INC: $350,000 over 8y, 0.3% of budgetSCHOOLHOUSE CONNECTION: $330,000 over 2y, 3.3% of budgetHEALTH RESOURCES IN ACTION INC: $320,000 over 2y, 0.3% of budgetNEW PROFIT INC: $319,440 over 2y, 0.9% of budgetARIZONA STATE UNIVERSITY FOUNDATION FOR A NEW AMERICAN UNIVERSITY: $300,000 over 2y, 0.0% of budgetSMART POWER INC: $250,000 over 2y, 25% of budgetVIRGINIA ORGANIZING INC: $250,000 over 1y, 2.5% of budgetTRANSCEND INC: $250,000 over 1y, 2.6% of budgetINSTITUTE FOR MARKET TRANSFORMATION: $250,000 over 2y, 3.8% of budgetNEW VENTURE FUND: $250,000 over 1y, 0.1% of budgetCOMMUNITY HEALTH CENTER CAPITAL FUND INC: $250,000 over 1y, 4.2% of budgetFLAMBOYAN FOUNDATION INC: $250,000 over 1y, 4.0% of budgetYEAR UP INC: $247,000 over 9y, 0.0% of budgetINSTITUTE FOR NONPROFIT PRACTICE INC: $245,000 over 9y, 0.8% of budgetClean Energy Group Inc: $240,000 over 1y, 14% 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.

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.

Carnegie Corporation …The Goldman Sachs Cha…Combined Jewish Phila…Barr FoundationGates FoundationThe William & Flora H…The Rhode Island Comm…Rf Catalytic Capital …United States Energy …Walton Family Foundat…New Profit IncThe New York Communit…
Carnegie Corporation of New YorkNY26.6× affinity12 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Carnegie Corporation of New York · The Goldman Sachs Charitable Gift Fund · Combined Jewish Philanthropies of Greater Boston Inc · Barr Foundation · Gates Foundation · The William & Flora Hewlett Foundation · The Rhode Island Community Foundation · Rf Catalytic Capital Inc · United States Energy Foundation · Walton Family Foundation Inc · New Profit Inc · The New York Community Trust

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.

How much its grantees rely on government

Each dot is one organization Leon Lowenstein Foundation Inc funds: left to right is the share of its income from government, bottom to top the share from Leon Lowenstein Foundation Inc. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 190%5%19%42%75%funder's share of their income ↑0%25%50%75%100%share of the org’s income from government →median 12%
  • Inclusive Prosperity Capital Inc: 100% of income from government
  • Center for Collaborative Education Inc: 100% of income from government
  • Hias Inc: 88% of income from government
  • Kids in Crisis Inc: 49% of income from government
  • Climatehaven Inc: 42% of income from government
  • Health Resources in Action Inc: 39% of income from government
  • Save the Children Federation Inc: 30% of income from government
  • Liberation Programs Inc: 24% of income from government
  • International Institute of New England Inc: 24% of income from government
  • Community Health Center Capital Fund Inc: 21% of income from government
  • Family Centers Inc: 20% of income from government
  • Trustees of Tufts College: 13% of income from government
  • Johns Hopkins University: 12% of income from government
  • National Association of Community Health Centers Inc: 12% of income from government
  • Salem Pantry Inc: 12% of income from government
  • City Year Inc: 11% of income from government
  • President and Fellows of Harvard College: 7% of income from government
  • Boys & Girls Club of Greenwich: 7% of income from government
  • Beth Israel Deaconess Medical Center Inc: 6% of income from government
  • Squash Haven Inc: 4% of income from government
  • The Achievement Network Ltd: 1% of income from government
  • Endicott College: 1% of income from government
  • Bridgeport Hospital: 0% of income from government
  • Year Up Inc: 0% of income from government
  • The Epiphany School Inc: 0% of income from government
  • Boston Foundation Inc: 0% of income from government
no gov moneyreceives it· size = income
19get no government money at all
49report government grants on their 990 we could not trace to a source (not plotted)
3rely on government for over half their income
typical government reliance, FY20–25
How this is measured
Government income is each org’s traced federal awards (USASpending grants and contracts) plus state payments (open checkbooks) as a share of its total revenue (IRS Form 990); the self-reported government-grant line (990 line 1e) is carried for cross-check: a grantee that reports government grants we could not trace to a source is left off the chart rather than shown as receiving none. An association, not a claim that a grant caused the public funding. Coverage is precision-first, a floor rather than a census; state records exist for 9 states, so a grantee outside them shows no state figure (dimmed) rather than a false zero. Federal award amounts are obligations, which can span years, so a single-year share is indicative. 990 filings lag 12 to 24 months.
05Through Plinth

Warm introductions · Powered by PlinthPlus

How do I get to Leon Lowenstein Foundation Inc?

Find your warmest path to Leon Lowenstein Foundation Inc 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 351 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 Leon Lowenstein’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