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The Seidenberg Family Foundation Inc at a glance

· Private foundation

The Seidenberg Family 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.

$1.2M
Granted FY2024still arriving
31
Grants FY2024still arriving
11
States reached
$702k
Largest
01What it fundsRead
02The needRead
03Its granteesRead
04Its fieldRead
01What it funds
0198% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2024.

Health$12MEducation$2.1MReligion$858kArts & Culture$561kCrime & Legal$525kYouth Development$204kHuman Services$130kPhilanthropy$22kOther$0
02FY2024 · 31 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2024

  • Under $10k22 grants · $26k
  • $10k–50k5 grants · $128k
  • $50k–250k3 grants · $370k
  • $250k+1 grant · $702k
$1,000
Median grant
11
States reached
$16M
Total assets
Largest grants
RecipientAmount
MEMORIAL SLOAN KETTERING$701,500
TRUSTEES OF COLUMBIA UNIVERSITY$229,300
BEYOND CELIAC$90,200
BOYS & GIRLS CLUB OF NORTHERN WESTCHESTER$50,000
CORNELL UNIVERSITY$40,000
Individual grant recipient$37,500
TEMPLE BETH SHALOM$25,000
JUPITER MEDICAL CENTER$15,000
PACE UNIVERSITY$10,000
LUSTGARTEN FOUNDATION$5,000
STUDENT ADVOCACY$3,000
WNETTHIRTEEN$3,000
PENN STATE UNIVERSITY$2,500
NEW YORK PRESBYTERIAN HOSPITAL$2,500
TEMPLE BETH EL OF NORTHERN WESTCHESTER$1,800
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 (FY17–24, $58k) land where the poverty rate runs at 9%, against an area that typically sits at 10%. 34% of those dollars go to grantees based in above-average-need neighborhoods. Its grants skew toward lower-need ZIPs.

area typical 10%Lend a Hand Foundation: $250 → 10%Lustgarten Foundation: $5k → 6%JCC Rockland: $5k → 14%Lustgarten Foundation: $5k → 6%JCC Rockland: $5k → 14%American Red Cross: $3k → 14%Lustgarten Foundation: $5k → 6%JCC Rockland: $3k → 14%AMERICAN RED CROSS: $798 → 14%Lustgarten Foundation: $5k → 6%JCC Rockland: $1k → 14%American Red Cross: $725 → 14%LUSTGARTEN FOUNDATION: $5k → 6%American Red Cross: $600 → 14%Lustgarten Foundation: $5k → 6%American Red Cross: $100 → 14%Lustgarten Foundation: $5k → 6%United Way of Westchester and Putnam: $1k → 9%Westchester Children's Association: $2k → 9%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

NH
MN
IL
NY
MA
NV
IN
PA
NJ
CT
CA
CO
MO
VA
MD
DE
KS
NC
SC
DC
HI
GA
TX
FL
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.

98%of every dollar goes to organizations it has funded before.
$15M · 41 repeat orgs$235k to everyone else

Grantees it renews have grown median revenue +30% since the first grant, against +25% for those funded once.

41 repeat relationships: 24 still active in FY2024, 17 since wound down; 6 grantees were first funded in FY2024 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

41
58

Total granted

$15M
$230k

Median revenue growth · since first grant

+30%
+25%

Still filing today

56%
43%

New vs renewed · share of each year

In FY2024, 100% of grant dollars renewed an existing relationship; $5k went to new ones.

50%100%’17’18’19’20’21’22’23’24
RenewedFirst-time

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

’17’18’19’20’21’22’23’24
HealthEducationHuman ServicesArts & CulturePhilanthropyAnimalsOther
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

  • BC
    BEYOND CELIAC
    7× · 2017–2024 · $581k · revenue +98%
  • NY
    NEW YORK HALL OF SCIENCE
    7× · 2017–2023 · $316k · revenue +19%
  • PU
    PACE UNIVERSITY
    8× · 2017–2024 · $280k · revenue +24%

Funded once

  • CD
    Celiac Disease Center - Columbia Presbyterian
    one grant, 2017 · $102k
  • CU
    Columbia University - Doctors Trustee
    one grant, 2017 · $32k
  • BS
    Boy Scouts - TMR Capital Campaign
    one grant, 2017 · $25k
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
Memorial Sloan-Kettering Cancer Center

Leadership in the prevention, treatment, and cure of cancer through excellence, vision and cost effectiveness in patient care, outreach programs, research, and education.

Health
3
Albany College of Pharmacy and Health Sciences

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

Education
4
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
5
The Translational Genomics Research Institute

Please see schedule o

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
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…

—
8
Drexel University

Drexel university fulfills its founder's vision of preparing each new generation of students for productive professional and civic lives while also focusing its collective expertise on solving society's greatest problems. drexel is an…

Education
9
Fred Hutchinson Cancer Center

Fred hutch cancer center ("fred hutch") unites innovative research and compassionate care to prevent and eliminate cancer and infectious disease. continued on schedule o

Health
10
Dana-Farber Cancer Institute Inc

The mission of dfci is to provide expert, compassionate, and equitable care to children, adults, and their families, while advancing the understanding, diagnosis, treatment, cure, and prevention of cancer and related diseases. we train new…

Health
11
The Johns Hopkins Hospital

For more than 125 years, the mission of the johns hopkins hospital has been to lead the world in the diagnosis and treatment of disease and to train tomorrow's great physicians, nurses and scientists. above all, we aim to provide the…

Health
12
Trustees of the University of Pennsylvania

The trustees of the university of pennsylvania (the "university") sees itself as having a public service mission. in such regard, the university aims to provide a rich and diverse educational environment for its students; to pioneer…

Education
How this is measured
The grantee most central to the portfolio’s shape is Dress for Success Worldwide; the most unlike its peers is Horace Greeley Scholarship Fund. 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

57 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. 57 of the 109 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)
55/57
Grantees still filing
42/57
Grew since first funded

Where the money sits, by cause and then by grantee

New York Presbyterian Hospital: $7,027,500 · OtherNew York Presbyterian HospitalMEMORIAL SLOAN KETTERING: $2,303,000 · OtherMEMORIAL SLOAN KETTERINGTemple Beth Shalom: $793,793 · OtherTemple Beth ShalomUJA: $775,000 · OtherUJA+62 more: $525,203 · OtherNEW YORK GENOME CENTER INC: $1,775,000 · HealthNEW YORK GENOME …BEYOND CELIAC: $581,200 · HealthBEYOND CELIAC+14 more: $61,550 · HealthTHE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK: $1,560,152 · EducationTHE TRUSTEES …PACE UNIVERSITY: $280,000 · EducationPACE UNIVERSI…Cornell University: $90,000 · Education+9 more: $56,550 · EducationNEW YORK HALL OF SCIENCE: $316,000 · Arts & CultureLINCOLN CENTER FOR THE PERFORMING ARTS INC: $81,000 · Arts & CultureWNET: $23,000 · Arts & Culture+1 more: $5,000 · Arts & CultureBOYS & GIRLS CLUB OF NORTHERN WESTCHESTER: $177,500 · Youth DevelopmentMARC LUSTGARTEN PANCREATIC CANCER FOUNDATION: $35,000 · Human ServicesJCC ROCKLAND INC: $14,300 · Human ServicesAmerican National Red Cross & Its Constituent Chapters and Branches: $5,383 · Human ServicesWESTCHESTER CHILDREN'S ASSOCIATION INC: $2,000 · Human Services+2 more: $1,250 · Human ServicesMGM RESORTS FOUNDATION: $11,000 · PhilanthropyHAWAII COMMUNITY FOUNDATION: $5,000 · PhilanthropyTELECOMPIONEERS CHARITABLE FOUNDATION: $3,950 · Philanthropy+1 more: $303 · Philanthropy
Other$11,424,496Health$2,417,750Education$1,986,702Arts & Culture$425,000Youth Development$177,500Human Services$57,933Philanthropy$20,253

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 budgetNEW YORK GENOME CENTER INC: $1,775,000 over 5y, 0.5% of budgetTHE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK: $1,560,152 over 7y, 0.0% of budgetBEYOND CELIAC: $581,200 over 7y, 6.3% of budgetNEW YORK HALL OF SCIENCE: $316,000 over 7y, 0.7% of budgetPACE UNIVERSITY: $280,000 over 8y, 0.0% of budgetBOYS & GIRLS CLUB OF NORTHERN WESTCHESTER: $177,500 over 6y, 0.9% of budgetCornell University: $90,000 over 3y, 0.0% of budgetLINCOLN CENTER FOR THE PERFORMING ARTS INC: $81,000 over 3y, 0.1% of budgetSTUDENT ADVOCACY INC: $49,750 over 8y, 2.1% of budgetJupiter Medical Center Inc: $40,000 over 3y, 0.0% of budgetMARC LUSTGARTEN PANCREATIC CANCER FOUNDATION: $35,000 over 7y, 0.0% of budgetWNET: $23,000 over 7y, 0.0% of budgetJCC ROCKLAND INC: $14,300 over 4y, 0.1% of budgetMGM RESORTS FOUNDATION: $11,000 over 2y, 0.1% of budgetAMERICAN CANCER SOCIETY INC: $7,000 over 4y, 0.0% of budgetHUNTINGTON'S DISEASE FOUNDATION: $6,000 over 5y, 0.1% of budgetAmerican National Red Cross & Its Constituent Chapters and Branches: $5,383 over 5y, 0.0% of budgetAmerican Museum of Natural History: $5,000 over 1y, 0.0% of budgetINSTITUTE FOR ENTREPRENEURIAL LEADERSHIP INC: $5,000 over 1y, 2.0% of budgetHAWAII COMMUNITY FOUNDATION: $5,000 over 1y, 0.0% of budgetTELECOMPIONEERS CHARITABLE FOUNDATION: $3,950 over 5y, 0.1% of budgetTOMORROWS CHILDREN'S FUND INC: $3,000 over 1y, 0.2% of budgetTHE AMERICAN SOCIETY FOR THE PREVENTION OF CRUELTY TO ANIMALS: $2,500 over 5y, 0.0% of budgetWESTCHESTER CHILDREN'S ASSOCIATION INC: $2,000 over 1y, 0.3% of budgetBLOOD CANCER UNITED INC: $1,750 over 3y, 0.0% of budgetHORACE GREELEY SCHOLARSHIP FUND: $1,500 over 3y, 0.1% of budgetINSTITUTE FOR EDUCATIONAL ADVANCEMENT: $1,500 over 3y, 0.0% of budgetTHE GIFT OF LIFE CORPORATION: $1,120 over 2y, 14% of budgetConnections Education Center of the Palm Beaches Inc: $1,100 over 2y, 0.0% of budgetAMERICAN LUNG ASSOCIATION: $1,000 over 1y, 0.0% of budgetPHILADELPHIA YOUNG PLAYWRIGHTS: $1,000 over 1y, 0.1% of budgetKIDSPIRIT INC: $1,000 over 1y, 0.9% of budgetTrustees of Tufts College: $1,000 over 1y, 0.0% of budgetUNITED WAY OF WESTCHESTER AND PUTNAM: $1,000 over 1y, 0.0% of budgetGREATER NEWARK CONSERVANCY INC: $1,000 over 1y, 0.0% of budgetDAVIS PHINNEY FOUNDATION: $600 over 2y, 0.0% of budgetDRESS FOR SUCCESS WORLDWIDE: $500 over 1y, 0.0% of budgetPARKINSONS UNITY WALK INC: $500 over 1y, 0.0% of budgetTHE AMERICAN IRELAND FUND (DBA THE IRELAND FUNDS AMERICA/THE IRELAND FUNDS): $500 over 1y, 0.0% of budgetLUPUS FOUNDATION OF AMERICA INC: $500 over 1y, 0.0% of budgetCYSTIC FIBROSIS FOUNDATION: $500 over 1y, 0.0% of budgetSharsheret Inc: $500 over 1y, 0.0% of budgetAmerican Heart Association Inc: $500 over 1y, 0.0% of budgetNORTHERN WESTCHESTER HOSPITAL ASSOCIATION: $500 over 1y, 0.0% of budget(914) CARES INC: $303 over 3y, 0.0% of budgetNATIONAL ALLIANCE ON MENTAL ILLNESS OF NEW YORK CITY INC: $250 over 1y, 0.0% of budgetLEND A HAND FOUNDATION: $250 over 1y, 0.1% of budgetBRADLEY UNIVERSITY: $250 over 1y, 0.0% 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 NEW YORK GENOME CENTER INC ↗
  • Who funds THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK ↗
  • Who funds BEYOND CELIAC ↗
  • Who funds NEW YORK HALL OF SCIENCE ↗
  • Who funds PACE UNIVERSITY ↗
  • Who funds BOYS & GIRLS CLUB OF NORTHERN WESTCHESTER ↗
  • Who funds Cornell University ↗
  • Who funds LINCOLN CENTER FOR THE PERFORMING ARTS INC ↗
  • Who funds STUDENT ADVOCACY INC ↗
  • Who funds Jupiter Medical Center Inc ↗
  • Who funds MARC LUSTGARTEN PANCREATIC CANCER FOUNDATION ↗
  • Who funds WNET ↗
  • Who funds JCC ROCKLAND INC ↗
  • Who funds MGM RESORTS FOUNDATION ↗
  • Who funds AMERICAN CANCER SOCIETY INC ↗
  • Who funds HUNTINGTON'S DISEASE FOUNDATION ↗
  • Who funds American National Red Cross & Its Constituent Chapters and Branches ↗
  • Who funds American Museum of Natural History ↗
  • Who funds INSTITUTE FOR ENTREPRENEURIAL LEADERSHIP INC ↗
  • Who funds HAWAII COMMUNITY FOUNDATION ↗
  • Who funds TELECOMPIONEERS CHARITABLE FOUNDATION ↗

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…Citizens Charitable F…The V & L Marx Founda…Pcsb Community Founda…American Express Foun…Chubb Charitable Foun…National Philanthropi…Td Charitable Foundat…The Bessemer Giving F…The Goldman Sachs Cha…Jpmorgan Chase Founda…
Jewish Communal FundNY21.6× 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 · Citizens Charitable Foundation · The V & L Marx Foundation · Pcsb Community Foundation · American Express Foundation · Chubb Charitable Foundation · National Philanthropic Trust · Td Charitable Foundation · The Bessemer Giving Fund · The Goldman Sachs Charitable Gift Fund · Jpmorgan Chase 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 Seidenberg Family Foundation Inc funds: left to right is the share of its income from government, bottom to top the share from The Seidenberg Family Foundation Inc. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 50%6%25%56%100%funder's share of their income ↑0%13%25%38%50%share of the org’s income from government →median 13%
  • University of Delaware: 30% of income from government
  • Trustees of Tufts College: 13% of income from government
  • Sharsheret Inc: 4% of income from government
  • Jupiter Medical Center Inc: 2% of income from government
no gov moneyreceives it· size = income
5get no government money at all
13report government grants on their 990 we could not trace to a source (not plotted)
0rely on government for over half their income
⤢ axis zoomed · 0–50%
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.

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 109 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 Seidenberg 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