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· 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
33
Grants FY2024still arriving
7
States reached
$4.0M
Largest
01What you fundRead
02Your edgeRead
03Your fieldRead
04Through PlinthRead
01What you fund
0196% classified

What you funded, over time

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

Arts & Culture$13MHealth$5.6MEducation$1.1MEnvironment$1.0MInternational$753kFood & Nutrition$586kPhilanthropy$229kAnimals$169kOther$0
02FY2024 · 33 grants

Where the money goes

Your grants by size, and where they go.

By grant size · FY2024

  • Under $10k11 grants · $29k
  • $10k–50k13 grants · $244k
  • $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
Atlantic Council of the United State$50,000
New York Public Library$50,000
The Museum of Modern Art$50,000
Wildlife Conservation Society$25,000
Brown University of Providence$25,000
Reach Prep Inc$25,000
Collegiate School$25,000
Friends Of The High Line$25,000
The Milken Institute$24,031
02Your edge
repeat funding

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.

86%of every dollar goes to organizations you’ve funded before.
$20M · 29 repeat orgs$3.2M to everyone else

And the relationships you keep tend to grow: grantees you re-up on have seen median revenue of +44% since the first grant, against +17% for the ones you 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%
+17%

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

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

  • 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

Repeat = funded in two or more distinct years; growth and survival are read from each grantee’s own subsequent IRS filings.

03Your field

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.

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

For reference, the grantee most central to the portfolio’s shape is The New York Public Library Astor Lenox and Tilden Foundations and 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.

For each theme you fund, this compares how the sector’s money is shifting with how your own giving is shifting.

← shrinkinggrowing →↓ leaning in → pulling backsteadyLocal History MuseumsPublic Library SupportAddiction & Mental Health T…Education Equity InitiativesGirls Stem Education Progra…Christian Outreach Ministri…Government Accountability &…Christian Youth CampsVeteran Support ServicesAnimal Rescue and ShelterDevelopmental Disabilities …Jewish Community FederationsChildhood Cancer SupportFood Pantries and AssistanceCharter and Independent Sch…Environmental Advocacy and …Domestic Violence and Sexua…Youth Development CentersVolunteer Fire & RescueFaith-Based Liberal Arts Co…Community Hospital Systems
the sector your giving your giving is ahead of the sector the sector’s ahead of you· dot size = how much the theme matters to each side
Ordered by the change in your giving — leaning in on top, pulling back at the bottom. The bar between the two dots is how out of step you are with the sector. Hover any row for detail.

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 43 years old; the field is 18. You back the established end — and your money leans older still.

THE FIELDby orgYOUR GRANTEESby number19%0%<5yr14%4%5–10yr20%14%10–20yr19%22%20–35yr13%26%35–55yr16%35%55yr+
THE FIELDby orgYOUR MONEYby value19%0%<5yr14%1%5–10yr20%1%10–20yr19%46%20–35yr13%5%35–55yr16%48%55yr+

The field is 19% startups (under 5 years old) — 0% of your grantees by number, and just 0% of your money.

Closures · last 5 years

The orgs you fund almost never close — 0.0% lost their exemption, against 10% of the field you don’t fund.

orgs you fund
0.0%0/78
the rest of the field
10%
11,858/120,682

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.

03the grantee network

73 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. 73 of the 97 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.

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

Where your money sits — by cause, 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 — $1,045,000 · 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 — $1,429,181 · Other+44 moreThe New York Public Library Astor Lenox and Tilden Foundations — $250,000 · EducationCOLUMBIA BUSINESS SCHOOL CLUB OF NY INC — $156,500 · EducationJOHNS HOPKINS UNIVERSITY — $100,000 · EducationICAHN SCHOOL OF MEDICINE AT MOUNT SINAI — $100,000 · EducationNew York University — $100,000 · EducationTRUSTEES OF DEERFIELD ACADEMY — $80,000 · EducationTHE COLLEGIATE SCHOOL — $75,000 · 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 · HealthPARTNERSHIP TO END ADDICTION — $25,000 · HealthGREENWICH HOSPITAL — $25,000 · HealthGIRLS EDUCATIONAL AND MENTORING SERVICES INC — $25,000 · Health+4 more — $10,100 · HealthWildlife Conservation Society — $100,000 · AnimalsEQUUS FOUNDATION INC — $63,000 · 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$12,763,976Other$7,954,181Education$1,030,508International$577,500Health$382,600Animals$168,150Community Improvement$95,500

Each org by its size and your share of it — top-left is where you’re load-bearing

25%50%75%100%$100k$1.0M$10M$100Mgrantee revenue →↑ your 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 — $1,045,000 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 budgetJOHNS HOPKINS UNIVERSITY — $100,000 over 1y, 0.0% of budgetWildlife Conservation Society — $100,000 over 3y, 0.0% of budgetCOALITION FOR THE HOMELESS INC — $100,000 over 1y, 0.5% of budgetICAHN SCHOOL OF MEDICINE AT MOUNT SINAI — $100,000 over 1y, 0.0% of budgetNew York University — $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 budgetTHE COLLEGIATE SCHOOL — $75,000 over 3y, 0.0% of budgetWHITNEY MUSEUM OF AMERICAN ART — $70,000 over 3y, 0.0% of budgetEQUUS FOUNDATION INC — $63,000 over 5y, 2.5% of budgetTHE MILKEN INSTITUTE — $61,113 over 3y, 0.0% of budgetENTERPRISE COMMUNITY PARTNERS INC — $60,000 over 1y, 0.1% of budgetCENTRAL PARK CONSERVANCY INC — $50,000 over 2y, 0.0% of budgetCLOONEY FOUNDATION FOR JUSTICE — $50,000 over 1y, 0.5% of budgetCOLLEGIATE SCHOOL INC — $50,000 over 2y, 0.1% of budgetNEW YORK CITY POLICE FOUNDATION INC — $50,000 over 1y, 0.4% of budgetWEST SIDE CENTER FOR COMMUNITY LIFE — $50,000 over 2y, 0.2% of budgetPresident and Fellows of Harvard College — $50,000 over 1y, 0.0% of budgetHOUSE OF SPEAKEASY FOUNDATION — $40,000 over 5y, 2.4% of budgetCHARITIES AID FOUNDATION AMERICA — $40,000 over 2y, 0.0% of budgetRETHINK FOOD NYC INC — $35,000 over 2y, 0.1% of budgetPROJECT SAGE INC — $27,500 over 2y, 2.4% of budgetBROWN UNIVERSITY — $25,000 over 1y, 0.0% of budgetMadison Square Boys and Girls Club Foundation Inc — $25,000 over 1y, 6.5% of budgetTHE PALEY CENTER FOR MEDIA — $25,000 over 1y, 0.1% of budgetNEW YORK BOTANICAL GARDEN — $25,000 over 1y, 0.0% of budgetPARTNERSHIP TO END ADDICTION — $25,000 over 1y, 0.1% of budgetCFDA FOUNDATION INC — $25,000 over 1y, 0.7% of budgetGREENWICH HOSPITAL — $25,000 over 1y, 0.0% of budgetPBS FOUNDATION — $25,000 over 1y, 0.1% of budgetTREVOR PROJECT INC — $25,000 over 1y, 0.1% of budgetREACH PREP INC — $25,000 over 1y, 1.3% of budgetGIRLS EDUCATIONAL AND MENTORING SERVICES INC — $25,000 over 1y, 0.8% of budgetASSOCIATION TO BENEFIT CHILDREN — $25,000 over 1y, 0.1% of budgetPERFECT EARTH PROJECT INC — $15,000 over 2y, 1.8% of budgetSKOWHEGAN SCHOOL OF PAINTING AND SCULPTURE INC — $15,000 over 1y, 0.3% of budgetVILLANOVA UNIVERSITY — $11,303 over 5y, 0.0% of budgetSOUTHAMPTON ASSOCIATION INC — $10,500 over 3y, 2.8% of budgetGOVERNORS ISLAND ALLIANCE — $10,000 over 1y, 0.4% of budgetSpelman College — $10,000 over 1y, 0.0% of budgetNEW YORKERS FOR PARKS — $10,000 over 1y, 1.0% of budget
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.

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.

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

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.

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 directly from IRS e-file XML — your own 990/990-PF and the multi-year returns of the 97 grantees we resolved across every year we hold, several hundred filings in all (a different count from the grant rows on the cover, which are one fiscal year)— each linked to its source. Grantee achievements and outcomes are each organization’s own program-service reporting (Form 990, Part III); we read these as association with sustained funding — the foundation is one of several forces — suppress low-confidence name matches rather than guess, and say so where a figure rests on a single grant or filing. Not everything on this page is a filed figure, and the difference matters. Filed is what you reported on your 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. How we build these →

Generated from your IRS Form 990-PF e-file return for fiscal year 2024, released 2024. Filings run roughly 12–24 months behind; figures are dated accordingly.

Source object · view filing

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