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The John L and Sue Ann Weinberg Foundation at a glance

· Private foundation

The John L and Sue Ann Weinberg Foundation

Its FY2024 filing reports that it funds preselected organizations and did not take unsolicited requests; check the foundation's own site before ruling it out.

$1.1M
Granted FY2024still arriving
67
Grants FY2024still arriving
9
States reached
$200k
Largest
01What it fundsRead
02Its granteesRead
03Its fieldRead
04Through PlinthRead
01What it funds
0198% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2019 to 2024.

Health$2.7MEducation$2.4MArts & Culture$1.2MSocial Science$240kRecreation & Sports$124kYouth Development$107kAnimals$46kPhilanthropy$29kOther$0
02FY2024 · 67 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2024

  • Under $10k46 grants · $84k
  • $10k–50k11 grants · $175k
  • $50k–250k10 grants · $871k
$2,000
Median grant
9
States reached
$60M
Total assets
Largest grants
RecipientAmount
Alexander Twilight Academy$200,118
Greenwich Hospital$100,344
Greenwich Hospital$100,070
Hotchkiss School$100,000
Cystic Fibrosis Foundation$100,000
Princeton University$70,000
Harvard Business School$50,000
Cystic Fibrosis Foundation$50,000
The New York Public Library$50,000
Columbia University$50,000
New York City Ballet$40,000
New York Historical Society$25,000
Columbia University$25,000
Young Audiences Arts for Learning$15,000
The New York and Presbyterian Hospital$10,000
02Its grantees
repeat funding

Who it funds again

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

97%of every dollar goes to organizations it has funded before.
$6.8M · 87 repeat orgs$179k to everyone else

Grantees it renews have grown median revenue +33% since the first grant, against +20% for those funded once.

87 repeat relationships: 52 still active in FY2024, 35 since wound down; 6 grantees were first funded in FY2024 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

87
63

Total granted

$6.8M
$159k

Median revenue growth · since first grant

+33%
+20%

Still filing today

87%
62%

New vs renewed · share of each year

In FY2024, 98% of grant dollars renewed an existing relationship; $21k went to new ones.

50%100%’20’21’22’23’24
RenewedFirst-time

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

’20’21’22’23’24
HealthArts & CultureEducationRecreation & SportsHuman ServicesAnimalsOther
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

  • GH
    GREENWICH HOSPITAL
    5× · 2020–2024 · $773k · revenue +20%
  • AT
    ALEXANDER TWILIGHT ACADEMY INC
    3× · 2020–2024 · $600k · revenue +201%
  • NY
    NEW YORK CITY BALLET INC
    5× · 2020–2024 · $474k · revenue +52%

Funded once

  • CU
    Columbia University -Columbia Cerebral
    one grant, 2020 · $25k
  • WF
    Weinberg Family Cerebral Palsy Center
    one grant, 2022 · $25k
  • LC
    LYFORD CAY FOUNDATION INCgraduated
    one grant, 2022 · $10k · revenue +157%
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
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
2
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
3
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
4
Manhattanville University

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

Education
5
Neurology Associates of Stony Brook University Faculty Practice Corp

Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.

Health
6
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
7
Stony Brook Urology University Faculty Practice Corporation

Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.

Health
8
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
9
Stony Brook Surgical Associates University Faculty Practice Corporation

Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.

Health
10
Boston Architectural College

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

—
11
Cornell University

Education, research, medical services and other public services.

Education
12
Stony Brook Internists University Faculty Practice Corporation

Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.

Health
How this is measured
The grantee most central to the portfolio’s shape is Young Audiences New York Inc; the most unlike its peers is Museum of the City of New York. 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

121 grantees tracked through their own filings, 2017–2026.

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 2026, not grant rows in a single year, so this will not match the grant count on the cover. 121 of the 158 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)
18
Early backer (in before they grew)
121/121
Grantees still filing
90/121
Grew since first funded

Where the money sits, by cause and then by grantee

ALEXANDER TWILIGHT ACADEMY INC: $600,267 · EducationALEXANDER TWILIGHT ACADEMY INCTHE HOTCHKISS SCHOOL: $406,555 · EducationTHE HOTCHKISS SCHOOLThe New York Public Library Astor Lenox and Tilden Foundations: $387,380 · EducationThe New York Public Library Astor Len…Teachers College Columbia University: $380,634 · EducationTeachers College Columbia UniversityThe Trustees of Princeton University: $377,450 · EducationThe Trustees of Princeton UniversityTHE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK: $135,450 · EducationTHE TRUSTEES OF COLUMBIA UNIVERSITY I…+11 more: $69,700 · EducationCYSTIC FIBROSIS FOUNDATION: $1,340,063 · OtherCYSTIC FIBROSIS FOUNDATIONHARVARD BUSINESS SCHOOL: $240,000 · OtherHARVARD BUSINESS SCHOOLMEMORIAL SLOAN-KETTERING CANCER CENTER: $125,500 · OtherMEMORIAL SLOAN-KETTERING CANCER C…+70 more: $411,470 · Other+70 moreNEW YORK CITY BALLET INC: $473,500 · Arts & CultureNEW YORK CITY BALLET…New York Historical Society: $425,210 · Arts & CultureNew York Historical …YOUNG AUDIENCES INC: $145,000 · Arts & CultureYOUNG AUDIENCES INCBRUCE MUSEUM INC: $76,330 · Arts & CultureBRUCE MUSEUM INC+18 more: $135,950 · Arts & Culture+18 moreGREENWICH HOSPITAL: $773,451 · HealthGREENWICH HOSPITA…CYSTIC FIBROSIS FOUNDATION: $123,740 · HealthCYSTIC FIBROSIS F…The Hospital for Special Surgery Fund Inc: $70,000 · HealthThe Hospital for …HUNTINGTON'S DISEASE FOUNDATION: $52,000 · HealthTHE FIBROLAMELLAR CANCER FOUNDATION: $38,000 · Health+21 more: $69,080 · Health+21 moreAGAWAM COUNCIL: $50,000 · Recreation & SportsCENTRAL PARK CONSERVANCY INC: $22,800 · Recreation & SportsUNITED STATES SQUASH RACQUETS ASSOC INC: $15,000 · Recreation & SportsEAST SIDE HOUSE INC: $9,500 · Recreation & SportsUS PROFESSIONAL SQUASH ASSOCIATION FOUNDATION: $6,000 · Recreation & SportsUSTA FOUNDATION INCORPORATED: $5,500 · Recreation & Sports+2 more: $2,000 · Recreation & SportsSQUASH HAVEN INC: $81,500 · Human ServicesMOUNT SINAI HEALTH SYSTEM INC: $5,000 · Human ServicesLifeforce in Later Years Inc: $4,900 · Human Services+3 more: $4,150 · Human ServicesWildlife Conservation Society: $18,500 · AnimalsTHE ANIMAL MEDICAL CENTER: $11,930 · AnimalsTHE AMERICAN SOCIETY FOR THE PREVENTION OF CRUELTY TO ANIMALS: $3,250 · AnimalsADOPT-A-DOG INC: $1,450 · Animals+2 more: $1,150 · Animals
Education$2,357,436Other$2,117,033Arts & Culture$1,255,990Health$1,126,271Recreation & Sports$110,800Human Services$95,550Animals$36,280

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 budgetGREENWICH HOSPITAL: $773,451 over 5y, 0.1% of budgetALEXANDER TWILIGHT ACADEMY INC: $600,267 over 3y, 17% of budgetNEW YORK CITY BALLET INC: $473,500 over 5y, 0.5% of budgetNew York Historical Society: $425,210 over 5y, 0.3% of budgetTHE HOTCHKISS SCHOOL: $406,555 over 5y, 0.1% of budgetThe New York Public Library Astor Lenox and Tilden Foundations: $387,380 over 5y, 0.0% of budgetTeachers College Columbia University: $380,634 over 4y, 0.1% of budgetThe Trustees of Princeton University: $377,450 over 5y, 0.0% of budgetYOUNG AUDIENCES INC: $145,000 over 5y, 3.0% of budgetTHE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK: $135,450 over 5y, 0.0% of budgetCYSTIC FIBROSIS FOUNDATION: $123,740 over 4y, 0.0% of budgetSQUASH HAVEN INC: $81,500 over 5y, 2.5% of budgetBRUCE MUSEUM INC: $76,330 over 5y, 0.3% of budgetThe Hospital for Special Surgery Fund Inc: $70,000 over 5y, 0.1% of budgetHUNTINGTON'S DISEASE FOUNDATION: $52,000 over 5y, 0.4% of budgetAGAWAM COUNCIL: $50,000 over 2y, 2.0% of budgetAMERICAN RHINOLOGIC SOCIETY: $43,200 over 2y, 1.2% of budgetTHE FIBROLAMELLAR CANCER FOUNDATION: $38,000 over 5y, 0.3% of budgetBIG BROTHERS BIG SISTERS OF NEW YORK CITY INC: $35,000 over 3y, 0.2% of budgetMUSEUM OF THE CITY OF NEW YORK: $31,750 over 4y, 0.1% of budgetGREENWICH HISTORICAL SOCIETY INC: $30,000 over 5y, 0.3% of budgetVASSAR COLLEGE: $26,000 over 4y, 0.0% of budgetROUND HILL VOLUNTEER FIRE COMPANY INC: $25,500 over 2y, 4.3% of budgetCENTRAL PARK CONSERVANCY INC: $22,800 over 5y, 0.0% of budgetKucetekela Foundation: $22,800 over 4y, 3.4% of budgetUNITED WAY OF GREENWICH INC: $21,500 over 5y, 0.3% of budgetWildlife Conservation Society: $18,500 over 4y, 0.0% of budgetWATERSIDE SCHOOL INC: $15,000 over 3y, 0.1% of budgetSCHOOL OF AMERICAN BALLET INC: $15,000 over 2y, 0.1% of budgetTHE ROCKEFELLER UNIVERSITY: $15,000 over 3y, 0.0% of budgetUNITED STATES SQUASH RACQUETS ASSOC INC: $15,000 over 2y, 0.1% of budgetTHE CARNEGIE HALL CORPORATION: $13,000 over 2y, 0.0% of budgetLINCOLN CENTER FOR THE PERFORMING ARTS INC: $12,000 over 3y, 0.0% of budgetTHE ANIMAL MEDICAL CENTER: $11,930 over 2y, 0.0% of budgetLYFORD CAY FOUNDATION INC: $10,000 over 1y, 0.4% of budgetThe New York and Presbyterian Hospital: $10,000 over 1y, 0.0% of budgetTHE GREENWICH LIBRARY: $10,000 over 5y, 0.1% of budgetFAMILY CENTERS INC: $10,000 over 5y, 0.0% of budgetEAST SIDE HOUSE INC: $9,500 over 3y, 0.0% of budgetMETROPOLITAN MUSEUM OF ART: $8,500 over 4y, 0.0% of budgetNEW YORK JUNIOR TENNIS LEAGUE INC: $8,000 over 4y, 0.0% of budgetNEW YORK BOTANICAL GARDEN: $7,500 over 5y, 0.0% of budgetNATIONAL DANCE INSTITUTE: $7,500 over 3y, 0.0% of budgetALZHEIMER'S DRUG DISCOVERY FOUNDATION: $7,500 over 3y, 0.0% of budgetSTEPPINGSTONE FOUNDATION INC: $7,500 over 3y, 0.1% of budgetTHE GREENWICH LAND TRUST INC: $6,500 over 4y, 0.1% of budgetBOYS & GIRLS CLUB OF GREENWICH: $6,100 over 4y, 0.1% of budgetUS PROFESSIONAL SQUASH ASSOCIATION FOUNDATION: $6,000 over 2y, 8.2% 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.

Malkin Fund IncThe Goldman Sachs Cha…The Resource Foundati…The New York Communit…Cornelia Cogswell Ros…Jewish Communal FundFairfield County's Co…Dr Joseph J Lawrence …S & L Marx FoundationRoyce Family Fund IncPanwy Foundation IncDalio Family Fund Inc
Malkin Fund IncNY26.1× affinity10 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Malkin Fund Inc · The Goldman Sachs Charitable Gift Fund · The Resource Foundation Inc · The New York Community Trust · Cornelia Cogswell Rossi Foundation Inc · Jewish Communal Fund · Fairfield County's Community Foundation Inc · Dr Joseph J Lawrence Trust Diana Serrell Trustee · S & L Marx Foundation · Royce Family Fund Inc · Panwy Foundation Inc · Dalio Family Fund Inc

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 The John L and Sue Ann Weinberg Foundation?

Find your warmest path to The John L and Sue Ann Weinberg 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 158 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 2024, released 2024. Filings run roughly 12 to 24 months behind; figures are dated accordingly.

Source object · view filing

Play a game based on John L and Sue Ann Weinberg’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