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· Private foundation

The Brook Fund 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.

$305k
Granted FY2025still arriving
87
Grants FY2025still arriving
11
States reached
$47k
Largest
01What it funds
0194% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2020 to 2025.

Philanthropy$452kEducation$358kHealth$290kArts & Culture$142kReligion$114kInternational$99kHousing & Shelter$55kYouth Development$54kOther$0
02FY2025 · 87 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2025

  • Under $10k77 grants · $117k
  • $10k–50k10 grants · $188k
$600
Median grant
11
States reached
$3.2M
Total assets
Largest grants
RecipientAmount
CORNELL UNIVERSITY$47,000
SAVANNAH JEWISH FEDERATION$30,000
JCCNNJ$25,000
ADAMAH$20,000
BROWN UNIVERSITY$13,000
SAVANNAH JEWISH EDUCATIONAL ALLIANCE$11,800
BREAKTHROUGH T1D (JDRF)$10,500
THE SYLVIA CENTER$10,500
NY STEM CELL FOUNDATION$10,000
SAVANNAH CLASSICAL ACADEMY$10,000
JERICHO PROJECT$9,300
HORACE MANN SCHOOL$8,900
CENTER FOR EARLY EDUCATION$8,750
JEWISH FEDERATION OF NORTHERN NJ$6,000
IMMUNE DEFICIENCY FOUNDATION$5,000
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 (FY20–24, $11k) land where the poverty rate runs at 7%, against an area that typically sits at 10%. 0% of those dollars go to grantees based in above-average-need neighborhoods. Its grants skew toward lower-need ZIPs.

area typical 10%LUSTGARTEN FOUNDATION: $500 → 6%LUSTGARTEN FOUNDATION: $500 → 6%LUSTGARTEN FOUNDATION: $500 → 6%LUSTGARTEN FOUNDATION: $500 → 6%LUSTGARTEN FOUNDATION: $500 → 6%JEWISH HOME FOUNDATION OF NORTH JER: $1k → 7%JEWISH HOME FOUNDATION OF NORTH JER: $1k → 7%CENTER FOR FOOD ACTION: $5k → 7%CENTER FOR FOOD ACTION: $1k → 7%CENTER FOR FOOD ACTION: $1k → 7%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
IL
MI
NY
MA
IA
PA
NJ
RI
CA
CO
MO
MD
DC
GA
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.

91%of every dollar goes to organizations it has funded before.
$1.3M · 99 repeat orgs$131k to everyone else

Grantees it renews have grown median revenue +38% since the first grant, against +31% for those funded once.

99 repeat relationships: 66 still active in FY2025, 33 since wound down; 17 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

99
29

Total granted

$1.3M
$74k

Median revenue growth · since first grant

+38%
+31%

Still filing today

53%
59%

New vs renewed · share of each year

In FY2025, 80% of grant dollars renewed an existing relationship; $57k went to new ones.

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

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

’20’21’22’23’24’25
HealthArts & CultureEducationEnvironmentFood & NutritionHuman ServicesOther
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

  • Cornell University
    6× · 2020–2025 · $173k · revenue +46%
  • TV
    THE VALLEY HOSPITAL FOUNDATION INC
    5× · 2020–2024 · $128k · revenue +64%
  • FOUNDATION FOR JEWISH CAMP INC
    5× · 2020–2024 · $53k · revenue +179%

Funded once

  • SK
    STEVEN K AND WINIFRED A GRINSPOON HILLEL CENTER FOR JEWISH COMMUNITY
    one grant, 2024 · $20k · revenue -72%
  • SJ
    SAVANNAH JEWISH EDUCATIONAL ALLIANC
    one grant, 2024 · $12k
  • CC
    CROHN'S COLITIS FOUNDATION
    one grant, 2024 · $10k
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
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
2
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
3
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
4
The United States Holocaust Memorial Museum

Chartered by a unanimous act of congress, the museum is america's national institution for the documentation, study, interpretation, and education of holocaust history and serves as our country's memorial to the victims of the holocaust.…

Arts & Culture
5
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
6
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…

—
7
Albany College of Pharmacy and Health Sciences

We educate the next generation of leaders to improve the health of our society.

Education
8
Sanford Burnham Prebys Medical Discovery Institute

Sanford burnham prebys medical discovery institute's mission is to advance the biomedical sciences by cultivating the next generation of scientific leaders, providing meaningful opportunities for researchers of all backgrounds to learn,…

Health
9
The New York and Presbyterian Hospital

To be a leader in the provision of world class patient care, teaching, research, and service to local, state, national, and international communities. newyork-presbyterian hospital is one of the nation's most comprehensive, integrated…

Health
10
New York Hall of Science

Nysci's mission is to nurture generations of passionate learners, critical thinkers, and active citizens through design make play - an approach to learning and engagement that is deeply rooted in research on stem learning and guides the…

Arts & Culture
11
Bar Ilan University in Israel Inc

Biu produces students who excel in the sciences, humanities, law, engineering, business & the arts.

—
12
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
How this is measured
The grantee most central to the portfolio’s shape is Jewish Federation of Northern New Jersey Inc; the most unlike its peers is Daughters of Miriam Foundation Inc. 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

81 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. 81 of the 149 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)
13
Early backer (in before they grew)
81/81
Grantees still filing
62/81
Grew since first funded

Where the money sits, by cause and then by grantee

SAVANNAH JEWISH FEDERATION: $117,100 · OtherSAVANNAH JEWISH FEDERATIONJCCNNJ: $106,000 · OtherJCCNNJNY STEM CELL FOUNDATION: $29,000 · OtherJERICHO PROJECT: $35,800 · Other+111 more: $465,275 · Other+111 moreJEWISH FEDERATION OF NORTHERN NEW JERSEY INC: $331,347 · PhilanthropyJEWISH FEDERATION OF N…+3 more: $17,600 · PhilanthropyCornell University: $173,100 · EducationCornell UniversityKIPP NEW YORK INC: $50,000 · EducationKIPP NEW YORK INCHorace Mann School: $34,900 · EducationHorace Mann SchoolTHE SAVANNAH CLASSICAL ACADEMY INC: $25,400 · EducationTHE SAVANNAH CLASSICA…STEVEN K AND WINIFRED A GRINSPOON HILLEL CENTER FOR JEWISH COMMUNITY: $20,000 · EducationSTEVEN K AND WINIFRED…THE CENTER FOR EARLY EDUCATION: $11,750 · Education+5 more: $17,350 · EducationTHE VALLEY HOSPITAL FOUNDATION INC: $127,750 · HealthTHE VALLEY …IMMUNE DEFICIENCY FOUNDATION: $28,600 · HealthIMMUNE DEFI…PROGERIA RESEARCH FOUNDATION INC: $6,000 · Health+10 more: $14,550 · Health+10 moreHIAS INC: $46,100 · InternationalJEWISH NATIONAL FUND (KEREN KAYEMETH LEISRAEL) INC: $36,400 · InternationalAMERICAN FRIENDS OF MAGEN DAVID ADOM: $6,000 · InternationalFOUNDATION FOR JEWISH CAMP INC: $52,500 · Youth DevelopmentADAMAH INC: $30,000 · ReligionHILLEL THE FOUNDATION FOR JEWISH CAMPUS LIFE: $9,200 · Religion
Other$753,175Philanthropy$348,947Education$332,500Health$176,900International$88,500Youth Development$52,500Religion$39,200

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

25%50%75%100%$10k$100k$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetJEWISH FEDERATION OF NORTHERN NEW JERSEY INC: $331,347 over 6y, 0.6% of budgetCornell University: $173,100 over 6y, 0.0% of budgetTHE VALLEY HOSPITAL FOUNDATION INC: $127,750 over 5y, 0.5% of budgetFOUNDATION FOR JEWISH CAMP INC: $52,500 over 5y, 0.1% of budgetKIPP NEW YORK INC: $50,000 over 5y, 0.1% of budgetHIAS INC: $46,100 over 5y, 0.0% of budgetJEWISH NATIONAL FUND (KEREN KAYEMETH LEISRAEL) INC: $36,400 over 6y, 0.0% of budgetJERICHO PROJECT: $35,800 over 6y, 0.1% of budgetHorace Mann School: $34,900 over 6y, 0.0% of budgetADAMAH INC: $30,000 over 2y, 0.1% of budgetIMMUNE DEFICIENCY FOUNDATION: $28,600 over 6y, 0.1% of budgetTHE SAVANNAH CLASSICAL ACADEMY INC: $25,400 over 3y, 0.1% of budgetSTEVEN K AND WINIFRED A GRINSPOON HILLEL CENTER FOR JEWISH COMMUNITY: $20,000 over 1y, 0.1% of budgetUNITED WAY OF BERGEN COUNTY: $18,700 over 6y, 0.0% of budgetCITY HARVEST INC: $18,400 over 6y, 0.0% of budgetBROWN UNIVERSITY: $13,000 over 1y, 0.0% of budgetTHE CENTER FOR EARLY EDUCATION: $11,750 over 2y, 0.0% of budgetDAUGHTERS OF MIRIAM FOUNDATION INC: $11,100 over 5y, 0.6% of budgetTHE SYLVIA CENTER: $10,500 over 1y, 0.5% of budgetTHE ROCKEFELLER UNIVERSITY: $10,400 over 6y, 0.0% of budgetHILLEL THE FOUNDATION FOR JEWISH CAMPUS LIFE: $9,200 over 6y, 0.0% of budgetTABLE TO TABLE INC: $8,300 over 6y, 0.0% of budgetCENTER FOR FOOD ACTION IN NEW JERSEY: $6,800 over 3y, 0.0% of budgetTHE VALLEY HOSPITAL AUXILIARY: $6,360 over 3y, 0.7% of budgetAMERICAN FRIENDS OF MAGEN DAVID ADOM: $6,000 over 3y, 0.0% of budgetPROGERIA RESEARCH FOUNDATION INC: $6,000 over 6y, 0.1% of budgetCOP SHOT INC: $6,000 over 6y, 1.6% of budgetNEPHCURE KIDNEY INTERNATIONAL: $5,500 over 1y, 0.2% of budgetGEORGIA ORGANICS INC: $5,500 over 6y, 0.1% of budgetCURE BREAST CANCER FOUNDATION INC: $4,500 over 6y, 0.2% of budgetWASHINGTON UNIVERSITY: $4,200 over 1y, 0.0% of budgetMETROPOLITAN MUSEUM OF ART: $3,600 over 6y, 0.0% of budgetMuseum of Modern Art: $3,400 over 6y, 0.0% of budgetSAVANNAH MUSIC FESTIVALINC: $3,300 over 6y, 0.0% of budgetNEW YORK CITY BALLET INC: $3,000 over 6y, 0.0% of budgetCENTRAL PARK CONSERVANCY INC: $3,000 over 6y, 0.0% of budgetTHE SAVANNAH COMMUNITY FOUNDATION INC: $3,000 over 3y, 0.0% of budgetJBI INTERNATIONAL INC: $2,750 over 6y, 0.0% of budgetNEW YORK PUBLIC RADIO: $2,700 over 6y, 0.0% of budgetMARC LUSTGARTEN PANCREATIC CANCER FOUNDATION: $2,500 over 5y, 0.0% of budgetTHE ARNOLD GOLD FOUNDATION: $2,500 over 5y, 0.0% of budgetTHE JEWISH MUSEUM: $2,100 over 6y, 0.0% of budgetNEW YORK BOTANICAL GARDEN: $2,090 over 6y, 0.0% of budgetJEWISH HOME FOUNDATION OF NORTH JERSEY: $2,000 over 2y, 0.0% of budgetFRIENDS OF HUDSON RIVER PARK INC: $1,800 over 1y, 0.0% of budgetAmerican Museum of Natural History: $1,800 over 6y, 0.0% of budgetCITIZENS COMMITTEE FOR CHILDREN OF NEW YORK INC: $1,800 over 6y, 0.0% of budgetSUMMER ON THE HILL INC: $1,500 over 6y, 0.1% 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.

  • Who funds JEWISH FEDERATION OF NORTHERN NEW JERSEY INC ↗
  • Who funds Cornell University ↗
  • Who funds THE VALLEY HOSPITAL FOUNDATION INC ↗
  • Who funds FOUNDATION FOR JEWISH CAMP INC ↗
  • Who funds KIPP NEW YORK INC ↗
  • Who funds HIAS INC ↗
  • Who funds JEWISH NATIONAL FUND (KEREN KAYEMETH LEISRAEL) INC ↗
  • Who funds JERICHO PROJECT ↗
  • Who funds Horace Mann School ↗
  • Who funds ADAMAH INC ↗
  • Who funds IMMUNE DEFICIENCY FOUNDATION ↗
  • Who funds THE SAVANNAH CLASSICAL ACADEMY INC ↗
  • Who funds STEVEN K AND WINIFRED A GRINSPOON HILLEL CENTER FOR JEWISH COMMUNITY ↗
  • Who funds UNITED WAY OF BERGEN COUNTY ↗
  • Who funds CITY HARVEST INC ↗
  • Who funds BROWN UNIVERSITY ↗
  • Who funds THE CENTER FOR EARLY EDUCATION ↗
  • Who funds DAUGHTERS OF MIRIAM FOUNDATION INC ↗
  • Who funds THE SYLVIA CENTER ↗
  • Who funds THE ROCKEFELLER UNIVERSITY ↗
  • Who funds HILLEL THE FOUNDATION FOR JEWISH CAMPUS LIFE ↗
  • Who funds TABLE TO TABLE INC ↗

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.

David and Eleanore Rukin Philanthropic FoundationNJ26.3× affinity10 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: David and Eleanore Rukin Philanthropic Foundation · Jewish Communal Fund · The Goldman Sachs Charitable Gift Fund · Jewish Federation of Northern New Jersey Inc · Columbia Bank Foundation · Charities Aid Foundation America · The Russell Berrie Foundation · The Savannah Community Foundation Inc · Gs Donor Advised Philanthropy Fund for Wealth Management Inc · The Warburg Pincus Foundation · Jewish Community Foundation of Greater Metrowest NJ · The Ayco Charitable 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.

How much its grantees rely on government

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

2024
’20’21’22’23’24’25
no gov · 90%0%1%3%5%funder's share of their income ↑0%25%50%75%100%share of the org’s income from government →median 5%
  • Hias Inc: 88% of income from government
  • Adamah Inc: 10% of income from government
  • West Bergen Mental Healthcare Inc: 5% of income from government
  • Ramapo College Foundation: 1% of income from government
  • Center for Food Action in New Jersey: 0% of income from government
no gov moneyreceives it· size = income
9get no government money at all
18report government grants on their 990 we could not trace to a source (not plotted)
1rely 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 The Brook Fund Inc?

Find your warmest path to The Brook Fund 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 149 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

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