Skip to content
Plinth
Foundation Dossiers
Plinth

· Private foundation

Earle I Mack Foundation Inc

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.

$814k
Granted FY2024still arriving
78
Grants FY2024still arriving
11
States reached
$109k
Largest
01What you fundRead
02The needRead
03Your edgeRead
04Your fieldRead
05Through PlinthRead
01What you fund
0197% classified

What you funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year — across FY2021–2024.

Arts & Culture$1.4MHealth$883kPublic Benefit$519kEducation$414kReligion$323kCivil Rights$232kHuman Services$207kAnimals$112kOther$0
02FY2024 · 78 grants

Where the money goes

Your grants by size, and where they go.

By grant size · FY2024

  • Under $10k57 grants · $144k
  • $10k–50k18 grants · $408k
  • $50k–250k3 grants · $262k
$2,630
Median grant
11
States reached
$6.3M
Total assets
Largest grants
RecipientAmount
PROJECT VICTORY$109,000
Individual grant recipient$95,500
METROPOLITAN MUSEUM OF ART$57,758
MEMORIAL SLOAN KETTERING CANCER CENTER$45,000
THE INSTITUTE FOR A SECURE AMERICA$42,500
NORTON MUSEUM OF ART$41,500
NATIONAL MUSEUM OF RACING HALL OF FAME$41,300
BRUCE AND MARSHA MOSKOWITZ FOUNDATION$35,000
PRESERVATION FOUNDATION OF PALM BEACH$34,200
WEILL CORNELL MEDICINE$25,000
FOUNDATION FOR ARTS AND PRESERVATION IN EMBASSIES$20,000
PEGGY ADAMS ANIMAL RESCUE LEAGUE$16,550
PARK EAST SYNAGOGUE$15,050
COX SCIENCE CENTER AND AQUARIUM$15,000
GLADES ACADEMY FOUNDATION INC$15,000
02The need
03

Do your dollars go where the need is?

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

show:

Your human-services grants (FY21–24, $132k) land where the poverty rate runs at 11%, against an area that typically sits at 11%. 92% of those dollars go to grantees based in above-average-need neighborhoods. Most of your grants land in higher-need ZIPs.

area typical 11%CHALLENGED ATHLETES FOUNDATION: $10k → 11%CHALLENGED ATHLETES FOUNDATION: $2k → 11%BELMONT CHILD CARE ASSOCIATION: $6k → 6%BELMONT CHILD CARE ASSOCIATION INC: $3k → 6%BELMONT CHILD CARE ASSOCIATION: $1k → 6%BELMONT CHILD CARE ASSOCIATION: $500 → 6%MORSE LIFE FOUNDATION: $70k → 11%MORSE LIFE FOUNDATION: $20k → 11%MORSE LIFE FOUNDATION: $5k → 11%HOSPICE FOUNDATION PALM BEACH: $2k → 11%HENRY STREET SETTLEMENT: $4k → 17%HENRY STREET SETTLEMENT: $4k → 17%HENRY STREET SETTLEMENT: $2k → 17%HENRY STREET SETTLEMENT: $1k → 17%INNOCENCE PROJECT: $3k → 17%0%20%40%50%more need →
grant to an above-average-need area below average· circle size = grant amount

Matched: human-services grants are those whose grantee’s IRS cause code is Human Services. Placed by people below the poverty linein the grantee’s ZIP, averaged from the tracts in that ZIP; grantee ZIP can differ from where services are delivered.

Which US states your grants reach

ID
IL
WI
NY
MA
IA
PA
NJ
CT
CA
KY
VA
MD
TN
SC
DC
GA
TX
FL

US grants placed by each grantee’s ZIP, which can differ from where services are actually delivered. Need from public data — U.S. Census/ACS, CDC PLACES, Eviction Lab, USDA — shown as context about the area, never attributed to your giving.

03Your 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.

84%of every dollar goes to organizations you’ve funded before.
$3.8M · 80 repeat orgs$721k to everyone else

And the relationships you keep tend to grow: grantees you re-up on have seen median revenue of +38% since the first grant, against +23% for the ones you funded once.

80 repeat relationships — 51 still active in FY2024, 29 since wound down; 23 grantees were first funded in FY2024 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

80
67

Total granted

$3.8M
$443k

Median revenue growth · since first grant

+38%
+23%

Still filing today

78%
73%

New vs renewed · share of each year

In FY2024, 66% of grant dollars renewed an existing relationship; $278k went to new ones.

50%100%’21’22’23’24
RenewedFirst-time

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

’21’22’23’24
Arts & CultureHealthEducationAnimalsPhilanthropyInternationalOther

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

  • NY
    NEW YORK CITY BALLET INC
    3× · 2021–2023 · $338k · revenue +192%
  • RF
    RESEARCH FOUNDATION FOR MENTAL HYGIENE INC
    2× · 2021–2022 · $323k · revenue +12%
  • MM
    METROPOLITAN MUSEUM OF ART
    4× · 2021–2024 · $243k · revenue +69%

Funded once

  • YU
    YESHIVA UNIVERSITYgraduated
    one grant, 2021 · $150k · revenue +25%
  • AI
    AMERICAN IDEA FOUNDATION INCgraduated
    one grant, 2022 · $25k · revenue +28%
  • FRIENDS OF THE ISRAEL DEFENSE FORCES
    one grant, 2023 · $20k · revenue -33%

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

04Your 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
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.

—
2
Boston Architectural College

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

—
3
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
4
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
5
New York Botanical Garden

The new york botanical garden is a museum of plants and a scientific research center devoted to the study of plants and their uses. it is the garden's mission to improve public understanding of the natural world, horticulture, and the…

Environment
6
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
7
The Paris Review Foundation Inc

The mission of the organization is to foster the development of creative individuals as writers and artists and to promote public appreciation of excellence in the literary and graphic arts by publishing a magazine containing fiction,…

Education
8
National Academy of Design

The mission of the national academy of design is to promote the fine arts in america through exhibition and education.

Education
9
Manhattanville University

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

Education
10
The Brooklyn Institute of Arts and Sciences

The mission of the brooklyn institute of arts and sciences, d/b/a brooklyn museum (the "museum") is to bring people together through art and experiences that inspire celebration, compassion, courage, and the will to act. (see schedule o).

Arts & Culture
11
Institute of Fine Arts Foundation

Supports the nyu institute of fine arts, a division of the nyu graduate school of arts and science; which is devoted to graduate teaching and research in the history of art and archeology and the conservation of works of art.

—
12
Harvard Club of Washington Dc

To inform and enrich the intellectual lives of 20,000 alumni of harvard university in the washington, dc area and to assist harvard university with respect to applicants and undergraduates from the dc area.

Education

For reference, the grantee most central to the portfolio’s shape is New York Landmarks Conservancy Inc and the most unlike its peers is The Neue Galerie 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.

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 MuseumsEnvironmental Conservation …Policy Research and AdvocacyHealth Access Advocacy and …Animal Rescue and ShelterYouth Development CentersCommunity College Foundatio…Equine Therapy ProgramsIndependent K-12 SchoolsUnited Way AffiliatesCommunity Arts CentersCommunity FoundationsCancer Support ServicesJewish Community Organizati…
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 38 years old; the field is 18. You back the established end — and your money leans older still.

THE FIELDby orgYOUR GRANTEESby number19%2%<5yr14%4%5–10yr20%12%10–20yr19%28%20–35yr13%23%35–55yr16%32%55yr+
THE FIELDby orgYOUR MONEYby value19%2%<5yr14%1%5–10yr20%6%10–20yr19%24%20–35yr13%28%35–55yr16%39%55yr+

The field is 19% startups (under 5 years old) — 2% of your grantees by number, and just 2% 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%0/139
the rest of the field
10%
11,858/120,621

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.

04the grantee network

133 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. 133 of the 178 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.

0
Load-bearing (≥25% of a budget)
20
Early backer (in before they grew)
133/133
Grantees still filing
87/133
Grew since you first funded

Where your money sits — by cause, then by grantee

GOVERNOR GEORGE E PATAKI LEADERSHIP AND LEARNING CENTER — $437,000 · OtherGOVERNOR GEORGE E PATAKI LEADERSHIP AND LEARNING CE…MEMORIAL SLOAN KETTERING CANCER CENTER — $222,500 · OtherMEMORIAL SLOAN KETTERING CANCER CENTERPARK EAST SYNAGOGUE — $171,950 · OtherPARK EAST SYNAGOGUENATIONAL MUSEUM OF RACING HALL OF FAME — $136,900 · OtherNATIONAL MUSEUM OF RACING HALL OF FAMEPROJECT VICTORY — $109,000 · OtherRABBI ARTHUR SCHNEIER PARK EAST DAY SCHOOL — $105,000 · OtherIndividual grant recipient — $95,500 · Other+87 more — $828,524 · Other+87 moreNEW YORK CITY BALLET INC — $338,200 · Arts & CultureNEW YORK CITY BALLET INCMETROPOLITAN MUSEUM OF ART — $243,105 · Arts & CultureMETROPOLITAN MUSEUM OF ARTThe Preservation Foundation of Palm Beach Inc — $127,600 · Arts & CultureThe Preservation Foundation…Foundation for Art and Preservation in Embassies — $105,000 · Arts & CultureFoundation for Art and Pres…NORTON MUSEUM OF ART INC — $73,500 · Arts & CultureNORTON MUSEUM OF ART INCCox Science Center and Aquarium Inc — $52,250 · Arts & CultureBYRD HOFFMAN WATER MILL FOUNDATION — $47,500 · Arts & Culture+26 more — $158,065 · Arts & Culture+26 moreRESEARCH FOUNDATION FOR MENTAL HYGIENE INC — $323,000 · HealthRESEARCH …HOPE FOR DEPRESSION RESEARCH FOUNDATION — $24,305 · HealthHOPE FOR …NEW YORK-PRESBYTERIAN FUND INC — $17,500 · Health+11 more — $28,250 · Health+11 moreYESHIVA UNIVERSITY — $150,000 · EducationGlades Academy Foundation Inc — $70,000 · EducationPresident and Fellows of Harvard College — $55,000 · EducationTHE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK — $35,000 · EducationJOHNS HOPKINS UNIVERSITY — $20,500 · Education+8 more — $28,952 · EducationBRUCE AND MARSHA MOSKOWITZ FOUNDATION INC — $150,000 · PhilanthropyPROSTATE CANCER FOUNDATION — $85,000 · PhilanthropyJEWISH FEDERATION OF PALM BEACH COUNTY INC — $15,000 · Philanthropy+7 more — $22,650 · PhilanthropyAPPEAL OF CONSCIENCE FOUNDATION — $193,000 · InternationalFRIENDS OF THE ISRAEL DEFENSE FORCES — $20,000 · InternationalGRANT FOUNDATION INC — $18,260 · InternationalCOUNCIL OF AMERICAN AMBASSADORS — $11,000 · InternationalWORLD CENTRAL KITCHEN INC — $10,000 · International+3 more — $6,680 · InternationalMORSELIFE FOUNDATION INC — $95,000 · Human ServicesCHALLENGED ATHLETES INC — $12,000 · Human ServicesHENRY STREET SETTLEMENT — $10,885 · Human ServicesBelmont Child Care Association Inc — $10,500 · Human Services+2 more — $4,000 · Human Services
Other$2,106,374Arts & Culture$1,145,220Health$393,055Education$359,452Philanthropy$272,650International$258,940Human Services$132,385

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 budgetNEW YORK CITY BALLET INC — $338,200 over 3y, 0.3% of budgetRESEARCH FOUNDATION FOR MENTAL HYGIENE INC — $323,000 over 2y, 0.1% of budgetMETROPOLITAN MUSEUM OF ART — $243,105 over 4y, 0.0% of budgetAPPEAL OF CONSCIENCE FOUNDATION — $193,000 over 3y, 4.5% of budgetBRUCE AND MARSHA MOSKOWITZ FOUNDATION INC — $150,000 over 4y, 11% of budgetYESHIVA UNIVERSITY — $150,000 over 1y, 0.0% of budgetThe Preservation Foundation of Palm Beach Inc — $127,600 over 4y, 1.7% of budgetFoundation for Art and Preservation in Embassies — $105,000 over 4y, 1.1% of budgetMORSELIFE FOUNDATION INC — $95,000 over 3y, 0.9% of budgetPROSTATE CANCER FOUNDATION — $85,000 over 2y, 0.1% of budgetNORTON MUSEUM OF ART INC — $73,500 over 2y, 0.1% of budgetGlades Academy Foundation Inc — $70,000 over 3y, 2.8% of budgetInstitute for a Secure America Inc — $62,500 over 3y, 5.6% of budgetPresident and Fellows of Harvard College — $55,000 over 2y, 0.0% of budgetCox Science Center and Aquarium Inc — $52,250 over 3y, 0.1% of budgetBYRD HOFFMAN WATER MILL FOUNDATION — $47,500 over 4y, 0.9% of budgetGRAYSON-JOCKEY CLUB RESEARCH FOUNDATION INC — $35,500 over 3y, 1.0% of budgetTHE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK — $35,000 over 1y, 0.0% of budgetMuseum of Modern Art — $30,000 over 3y, 0.0% of budgetAMERICAN IDEA FOUNDATION INC — $25,000 over 1y, 4.2% of budgetHOPE FOR DEPRESSION RESEARCH FOUNDATION — $24,305 over 4y, 0.2% of budgetThe Frick Collection — $24,000 over 4y, 0.0% of budgetJOHNS HOPKINS UNIVERSITY — $20,500 over 3y, 0.0% of budgetFRIENDS OF THE ISRAEL DEFENSE FORCES — $20,000 over 1y, 0.0% of budgetPeggy Adams Animal Rescue League of the Palm Beaches Inc — $19,850 over 2y, 0.1% of budgetGRANT FOUNDATION INC — $18,260 over 2y, 0.3% of budgetNEW YORK-PRESBYTERIAN FUND INC — $17,500 over 3y, 0.0% of budgetThe Palm Beach Police and Fire Foundation Inc — $16,880 over 3y, 0.1% of budgetTHOROUGHBRED AFTERCARE ALLIANCE FOUNDATI DBA THOROUGHBRED AFTERCARE ALLIANCE — $16,000 over 3y, 0.2% of budgetJEWISH FEDERATION OF PALM BEACH COUNTY INC — $15,000 over 2y, 0.0% of budgetThe Society of the Four Arts Inc — $14,000 over 1y, 0.1% of budgetTHE BOYS' CLUB OF NEW YORK — $13,670 over 3y, 0.1% of budgetCENTRAL PARK CONSERVANCY INC — $13,625 over 4y, 0.0% of budgetNEW YORK FOUNDATION FOR THE ARTS INC — $12,000 over 4y, 0.0% of budgetCHALLENGED ATHLETES INC — $12,000 over 2y, 0.1% of budgetTHE NEW 42ND STREET INC — $11,000 over 3y, 0.0% of budgetSARATOGA PERFORMING ARTS CENTER INC — $11,000 over 3y, 0.1% of budgetCOUNCIL OF AMERICAN AMBASSADORS — $11,000 over 4y, 0.9% of budgetHENRY STREET SETTLEMENT — $10,885 over 4y, 0.0% of budgetBelmont Child Care Association Inc — $10,500 over 4y, 0.5% of budgetFRIENDS OF PALM BEACH INC — $10,000 over 4y, 2.6% of budgetFordham University — $10,000 over 1y, 0.0% of budgetJOCKEYS' GUILD INC — $10,000 over 1y, 0.4% of budgetTHE SEMINAR NETWORK INC — $10,000 over 1y, 0.0% of budgetTHE MARCUS FOUNDATION INC — $10,000 over 1y, 0.0% of budgetWORLD CENTRAL KITCHEN INC — $10,000 over 1y, 0.0% of budgetNEW YORK LANDMARKS CONSERVANCY INC — $10,000 over 2y, 0.1% of budgetFILM AT LINCOLN CENTER INC — $9,895 over 3y, 0.0% 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 FundPaulson Family Founda…May and Samuel Rudin …Acquavella Family Fou…Clermont FoundationThe Bessemer Giving F…The Goldman Sachs Cha…Ganek Family Foundati…The Otis Booth Founda…The Ford FoundationW L Lyons Brown Found…The Brown Foundation …
Jewish Communal FundNY23.8× affinity22 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Jewish Communal Fund · Paulson Family Foundation · May and Samuel Rudin Family Foundation Inc · Acquavella Family Foundation · Clermont Foundation · The Bessemer Giving Fund · The Goldman Sachs Charitable Gift Fund · Ganek Family Foundation · The Otis Booth Foundation · The Ford Foundation · W L Lyons Brown Foundation · The Brown Foundation Inc

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.

Government reliance of your grantees

Every dot is one organization Earle I Mack Foundation Inc funds. Left–right is the share of its income from government; up–down is the share from you. Bigger dots raise more. Filter to federal, a single department, or state — and drag the year to watch it move.

2024
’20’21’22’23’24’25
no gov · 200%1%4%8%15%your share of their income ↑0%25%50%75%100%share of the org’s income from government →median 6%
  • Johns Hopkins University — 12% of income from government
  • President and Fellows of Harvard College — 7% of income from government
  • Cox Science Center and Aquarium Inc — 6% of income from government
  • New Hope Charities Inc — 0% of income from government
  • South Florida Pbs Inc — 0% of income from government
no gov moneyreceives it· size = income
20get no government money at all
25report government grants on their 990 we could not trace to a source (not plotted)
0rely on government for over half their income
typical government reliance, FY20–25

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 your grant caused the public funding. Coverage is precision-first — a floor, not 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 12–24 months.

05Through Plinth

Warm introductions · Powered by PlinthPlus

How do I get to Earle I Mack Foundation Inc?

Find your warmest path to Earle I Mack 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 directly from IRS e-file XML — your own 990/990-PF and the multi-year returns of the 178 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 camps
funders cluster by geography, not ideology
By state
where grant money is based, and what stays home
State money flows
the interactive map of money crossing state lines