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Marron Family Charitable Trust at a glanceAlso receives grants: funding profile →

· Private foundation

Marron Family Charitable Trust

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.

$6.5M
Granted FY2024still arriving
34
Grants FY2024still arriving
7
States reached
$4.0M
Largest
01What it fundsRead
02Its granteesRead
03Its fieldRead
04Through PlinthRead
01What it funds
0196% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2020 to 2024.

Arts & Culture$13MHealth$5.6MEducation$1.1MEnvironment$1.0MInternational$753kFood & Nutrition$586kPhilanthropy$229kAnimals$169kOther$0
02FY2024 · 34 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2024

  • Under $10k11 grants · $29k
  • $10k–50k14 grants · $269k
  • $50k–250k6 grants · $550k
  • $250k+3 grants · $5.6M
$20,000
Median grant
7
States reached
$6.9M
Total assets
Largest grants
RecipientAmount
The Museum of Modern Art$4,000,000
Fair Skies Foundation$1,000,000
Metropolitan Museum of Art$600,000
Friends Of The High Line$200,000
Atlantic Council of the United State$100,000
Friends Of The High Line$100,000
New York Public Library$50,000
Atlantic Council of the United State$50,000
The Museum of Modern Art$50,000
Reach Prep Inc$25,000
Collegiate School$25,000
Collegiate School$25,000
Wildlife Conservation Society$25,000
Friends Of The High Line$25,000
Brown University of Providence$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.
$20M · 29 repeat orgs$3.2M to everyone else

Grantees it renews have grown median revenue +44% since the first grant, against +20% for those funded once.

29 repeat relationships: 15 still active in FY2024, 14 since wound down; 8 grantees were first funded in FY2024 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

29
56

Total granted

$20M
$1.9M

Median revenue growth · since first grant

+44%
+20%

Still filing today

79%
70%

New vs renewed · share of each year

In FY2024, 81% of grant dollars renewed an existing relationship; $1.2M 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
EducationArts & CultureHealthInternationalHuman 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

  • MO
    Museum of Modern Art
    3× · 2020–2024 · $6.1M · revenue +38%
  • MM
    METROPOLITAN MUSEUM OF ART
    5× · 2020–2024 · $5.5M · revenue +119%
  • AC
    ATLANTIC COUNCIL OF THE UNITED STATES INC
    4× · 2020–2023 · $500k · revenue +84%

Funded once

  • BS
    Blue Skies Farm Foundation
    one grant, 2023 · $500k
  • CF
    COMMUNITY FUNDS INC
    one grant, 2020 · $200k
  • NY
    New York Public Library
    one grant, 2021 · $150k
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
American Museum of Natural History

The museum's mission statement is: "to discover, interpret, and disseminate - through scientific research and education - knowledge about human cultures, the natural world, and the universe."

Arts & Culture
2
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
3
Manhattanville University

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

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
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
6
Boston Architectural College

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

—
7
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
8
The Graduate Center Foundation Inc

The graduate center foundation is committed to promoting and safe-guarding the success of the graduate center by raising funds and managing and investing donations for use by the graduate center. the board of trustees of the foundation…

—
9
Museum of the City of New York

The museum of the city of new york fosters understanding of the distinctive nature of urban life in the world's most influential metropolis. it engages visitors by celebrating, documenting, and interpreting the city's past, present, and…

Arts & Culture
10
Fordham University

Fordham university, the jesuit university of new york, is committed to the discovery of wisdom and the transmission of learning, through research and through education of the highest quality. for more information, see schedule o.

Education
11
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
12
Manhattan University

Manhattan university is an independent catholic instituion of higher learning that embraces qualified men and women of all faiths, cultures, and traditions. the mission of manhattan university is to provide a contemporary, person-centered…

Education
How this is measured
The grantee most central to the portfolio’s shape is The New York Public Library Astor Lenox and Tilden Foundations; the most unlike its peers is The Catherine C Marron Foundation. 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

73 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. 73 of the 97 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.

1
Load-bearing (≥25% of a budget)
7
Early backer (in before they grew)
72/73
Grantees still filing
53/73
Grew since first funded

Where the money sits, by cause and then by grantee

Museum of Modern Art: $6,070,000 · Arts & CultureMuseum of Modern ArtMETROPOLITAN MUSEUM OF ART: $5,491,976 · Arts & CultureMETROPOLITAN MUSEUM OF ARTFRIENDS OF THE HIGH LINE INC: $1,145,000 · Arts & CultureFRIENDS OF THE HIGH LINE INC+9 more: $157,000 · Arts & CultureMemorial Sloan-Kettering Cancer Center: $5,025,000 · OtherMemorial Sloan-Kettering Cancer CenterFair Skies Foundation: $1,000,000 · OtherFair Skies FoundationBlue Skies Farm Foundation: $500,000 · OtherBlue Skies Farm Foundation+44 more: $1,434,431 · Other+44 moreThe New York Public Library Astor Lenox and Tilden Foundations: $250,000 · EducationCOLUMBIA BUSINESS SCHOOL CLUB OF NY INC: $156,500 · EducationTHE COLLEGIATE SCHOOL: $100,000 · EducationNew York University: $100,000 · EducationJOHNS HOPKINS UNIVERSITY: $100,000 · EducationICAHN SCHOOL OF MEDICINE AT MOUNT SINAI: $100,000 · EducationTRUSTEES OF DEERFIELD ACADEMY: $80,000 · EducationCOLLEGIATE SCHOOL INC: $50,000 · EducationPresident and Fellows of Harvard College: $50,000 · Education+8 more: $69,008 · EducationATLANTIC COUNCIL OF THE UNITED STATES INC: $500,000 · InternationalCLOONEY FOUNDATION FOR JUSTICE: $50,000 · International+3 more: $27,500 · InternationalNEW YORK-PRESBYTERIAN FUND INC: $210,000 · HealthFOUNTAIN HOUSE INC: $87,500 · HealthGIRLS EDUCATIONAL AND MENTORING SERVICES INC: $25,000 · HealthGREENWICH HOSPITAL: $25,000 · HealthPARTNERSHIP TO END ADDICTION: $25,000 · Health+4 more: $10,100 · HealthWildlife Conservation Society: $100,000 · AnimalsEQUUS FOUNDATION INC: $73,000 · Animals+2 more: $5,150 · AnimalsENTERPRISE COMMUNITY PARTNERS INC: $60,000 · Community ImprovementBROWN UNIVERSITY: $25,000 · Community ImprovementSOUTHAMPTON ASSOCIATION INC: $10,500 · Community Improvement
Arts & Culture$12,863,976Other$7,959,431Education$1,055,508International$577,500Health$382,600Animals$178,150Community Improvement$95,500

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 budgetMuseum of Modern Art: $6,070,000 over 3y, 1.3% of budgetMETROPOLITAN MUSEUM OF ART: $5,491,976 over 5y, 0.3% of budgetFRIENDS OF THE HIGH LINE INC: $1,145,000 over 5y, 1.8% of budgetATLANTIC COUNCIL OF THE UNITED STATES INC: $500,000 over 4y, 0.4% of budgetThe New York Public Library Astor Lenox and Tilden Foundations: $250,000 over 3y, 0.0% of budgetNEW YORK-PRESBYTERIAN FUND INC: $210,000 over 3y, 0.1% of budgetCOLUMBIA BUSINESS SCHOOL CLUB OF NY INC: $156,500 over 2y, 5.4% of budgetCOALITION FOR THE HOMELESS INC: $100,000 over 1y, 0.5% of budgetTHE COLLEGIATE SCHOOL: $100,000 over 3y, 0.1% of budgetWildlife Conservation Society: $100,000 over 3y, 0.0% of budgetNew York University: $100,000 over 1y, 0.0% of budgetJOHNS HOPKINS UNIVERSITY: $100,000 over 1y, 0.0% of budgetICAHN SCHOOL OF MEDICINE AT MOUNT SINAI: $100,000 over 1y, 0.0% of budgetFOUNTAIN HOUSE INC: $87,500 over 3y, 0.1% of budgetTRUSTEES OF DEERFIELD ACADEMY: $80,000 over 3y, 0.0% of budgetEQUUS FOUNDATION INC: $73,000 over 5y, 2.5% of budgetWHITNEY MUSEUM OF AMERICAN ART: $70,000 over 3y, 0.0% of budgetTHE MILKEN INSTITUTE: $61,113 over 3y, 0.0% of budgetENTERPRISE COMMUNITY PARTNERS INC: $60,000 over 1y, 0.1% of budgetNEW YORK CITY POLICE FOUNDATION INC: $50,000 over 1y, 0.4% of budgetCENTRAL PARK CONSERVANCY INC: $50,000 over 2y, 0.0% of budgetCOLLEGIATE SCHOOL INC: $50,000 over 2y, 0.1% of budgetCLOONEY FOUNDATION FOR JUSTICE: $50,000 over 1y, 0.5% of budgetPresident and Fellows of Harvard College: $50,000 over 1y, 0.0% of budgetWEST SIDE CENTER FOR COMMUNITY LIFE: $50,000 over 2y, 0.2% of budgetCHARITIES AID FOUNDATION AMERICA: $40,000 over 2y, 0.0% of budgetHOUSE OF SPEAKEASY FOUNDATION: $40,000 over 5y, 2.4% of budgetRETHINK FOOD NYC INC: $35,000 over 2y, 0.1% of budgetPROJECT SAGE INC: $27,500 over 2y, 2.4% of budgetREACH PREP INC: $25,000 over 1y, 1.3% of budgetASSOCIATION TO BENEFIT CHILDREN: $25,000 over 1y, 0.1% of budgetCFDA FOUNDATION INC: $25,000 over 1y, 0.7% of budgetTHE PALEY CENTER FOR MEDIA: $25,000 over 1y, 0.1% of budgetGIRLS EDUCATIONAL AND MENTORING SERVICES INC: $25,000 over 1y, 0.8% of budgetMadison Square Boys and Girls Club Foundation Inc: $25,000 over 1y, 6.5% of budgetGREENWICH HOSPITAL: $25,000 over 1y, 0.0% of budgetBROWN UNIVERSITY: $25,000 over 1y, 0.0% of budgetPBS FOUNDATION: $25,000 over 1y, 0.1% of budgetPARTNERSHIP TO END ADDICTION: $25,000 over 1y, 0.1% of budgetTREVOR PROJECT INC: $25,000 over 1y, 0.1% of budgetNEW YORK BOTANICAL GARDEN: $25,000 over 1y, 0.0% of budgetSKOWHEGAN SCHOOL OF PAINTING AND SCULPTURE INC: $15,000 over 1y, 0.3% of budgetPERFECT EARTH PROJECT INC: $15,000 over 2y, 1.8% of budgetVILLANOVA UNIVERSITY: $11,303 over 5y, 0.0% of budgetSOUTHAMPTON ASSOCIATION INC: $10,500 over 3y, 2.8% of budgetThe Thacher School Inc: $10,000 over 1y, 0.0% of budgetSpelman College: $10,000 over 1y, 0.0% of budgetGOVERNORS ISLAND ALLIANCE: $10,000 over 1y, 0.4% 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.

Jewish Communal FundThe New York Communit…The Ford FoundationMay and Samuel Rudin …The Goldman Sachs Cha…Boston Foundation IncThe Ayco Charitable F…Leon Levy FoundationAg FoundationThe Cowles Charitable…Lily Auchincloss Foun…American Express Foun…
Jewish Communal FundNY21.8× affinity13 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Jewish Communal Fund · The New York Community Trust · The Ford Foundation · May and Samuel Rudin Family Foundation Inc · The Goldman Sachs Charitable Gift Fund · Boston Foundation Inc · The Ayco Charitable Foundation · Leon Levy Foundation · Ag Foundation · The Cowles Charitable Trust · Lily Auchincloss Foundation Inc · American Express 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 Marron Family Charitable Trust?

Find your warmest path to Marron Family Charitable Trust 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 97 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 Marron Family’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