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Nathan Tannenbaum Foundation Inc at a glance

· Private foundation

Nathan Tannenbaum Foundation 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.

$50k
Granted FY2025still arriving
42
Grants FY2025still arriving
13
States reached
$10k
Largest
01What it fundsRead
02The needRead
03Its granteesRead
04Its fieldRead
05Through PlinthRead
01What it funds
0199% classified

What it funded, over time

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

Education$116kHealth$61kArts & Culture$58kEnvironment$26kCivil Rights$10kHuman Services$10kFood & Nutrition$7kHousing & Shelter$4kOther$0
02FY2025 · 42 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2025

  • Under $10k41 grants · $40k
  • $10k–50k1 grant · $10k
$500
Median grant
13
States reached
$942k
Total assets
Largest grants
RecipientAmount
WINSTON PREPARATORY SCHOOL$10,000
THE JOFFREY BALLET$8,000
CHILDREN'S RESEARCH FUND$5,000
NATIONAL NETWORK OF ABORTION FUNDS$3,000
NATIONAL IMMIGRATION LAW CENTER$2,000
GIVEDIRECTLY$2,000
NATIONAL IMMIGRATION PROJECT$1,000
INTERNATIONAL RESCUE CENTER$1,000
ALL-OPTIONS PREGNANCY RESOURCE CENT$1,000
BROWN UNIVERSITY$1,000
ALABAMA COHOSH COLLABORATIVE$1,000
THE PARKSIDE SCHOOL$1,000
JANE'S DUE PROCESS$1,000
THE PHOENIX SYMPHONY$1,000
PULSATILE TINNITUS FOUNDATION$1,000
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 (FY20–25, $9k) land where the poverty rate runs at 13%, against an area that typically sits at 11%. 57% of those dollars go to grantees based in above-average-need neighborhoods. Most of its grants land in higher-need ZIPs.

area typical 11%WHITE PONY EXPRESS: $800 → 9%RIP MEDICAL DEBT: $2k → 9%THE CHILD FOUNDATION: $1k → 12%RIP MEDICAL DEBT: $1k → 9%CHIPS: $500 → 20%WOMEN'S HEALTH AND EDUCATION FUND (WHEF): $1k → 14%HUDSON GUILD: $500 → 17%HUDSON GUILD: $500 → 17%HUDSON GUILD: $500 → 17%HUDSON GUILD: $250 → 17%HUDSON GUILD: $250 → 17%PRESBYTERIAN SENIOR SERVICES: $500 → 17%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

MN
IL
MI
NY
MA
OR
IN
PA
CT
RI
CA
MO
KY
VA
MD
AZ
TN
NC
DC
AL
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.

83%of every dollar goes to organizations it has funded before.
$250k · 36 repeat orgs$50k to everyone else

Grantees it renews have grown median revenue +25% since the first grant, against -5% for those funded once.

36 repeat relationships: 20 still active in FY2025, 16 since wound down; 21 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

36
38

Total granted

$250k
$32k

Median revenue growth · since first grant

+25%
-5%

Still filing today

72%
68%

New vs renewed · share of each year

In FY2025, 63% of grant dollars renewed an existing relationship; $18k 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
Arts & CultureHuman ServicesHealthEducationCivil RightsPhilanthropyOther
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

  • TP
    THE PARKSIDE SCHOOL
    6× · 2020–2025 · $81k · revenue +21%
  • TJ
    THE JOFFREY BALLET
    6× · 2020–2025 · $46k · revenue +57%
  • NATIONAL NETWORK OF ABORTION FUNDS INC
    5× · 2020–2025 · $23k · revenue +141%

Funded once

  • UM
    UNDUE MEDICAL DEBT AKA RIP MEDICAL DEBT
    one grant, 2024 · $2k
  • AC
    Abortion Care for Tennesseegraduated
    one grant, 2022 · $2k · revenue +46%
  • CF
    Child Foundation
    one grant, 2022 · $1k · revenue -7%
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
Npr Foundation

The npr foundation ("foundation") is organized and operated exclusively for the benefit of its sole supported organization, national public radio, inc. ("npr inc."). the foundation supports npr inc. through various activities such as…

—
2
National Public Radio Inc

National public radio, inc. ("npr") works collaboratively with member public radio station licensees ("member stations") to create a more informed public, one that is challenged and invigorated by a deeper understanding and appreciation of…

Arts & Culture
3
Npr International Operations Inc

Npr international operations, inc. ("nprio") supports the international newsgathering activities of national public radio, inc. through bureaus and offices established locally in foreign countries.

—
4
National Institute for Reproductive Health Inc

National institute for reproductive health, inc. works to protect and advance equitable access to reproductive health care by building power at the state and local level. using an approach that is rooted in partnerships with state and…

Civil Rights
5
Ipas

Ipas works globally to advance reproductive justice by expanding access to abortion and contraception.

International
6
University Associates in Obstetrics and Gynecology University Faculty Pract ice Corporation

Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.

Health
7
Women Donors Network

Women donors network advances a just, equitable, and sustainable world through the power of philanthropy, women's leadership, and collective and individual action.

Philanthropy
8
City Report Inc

CITY REPORT, INC. serves the people of New York through independent journalism that answers their information needs and holds the powerful to account.

Arts & Culture
9
Patient Access Network Foundation

As a leading charitable foundation and healthcare advocacy organization, the pan foundation is dedicated to accelerating access to treatment for those who need it most and empowering patients on their healthcare journeys. we provide…

—
10
The Common Application Inc

The common application is a not-for-profit membership organization of over 1,100 colleges and universities across the globe committed to access, equity, and integrity in the college admission process. every year, over 1.5 million students…

Education
11
National Opinion Research Center

See schedule onorc at the university of chicago conducts research and data science on critical societal issues to guide decision-making and the development of programs and public policy. our experts identify relationships and trends, and…

Social Science
12
Nashville Public Radio

Nashville public radio's mission is to be the most trusted & independent nashville voice, connecting our communities through non-partisan journalism, compelling storytelling, civil conversation and music discovery.

Arts & Culture
How this is measured
The grantee most central to the portfolio’s shape is National Immigration Law Center; the most unlike its peers is Charity Global 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

67 grantees tracked through their own filings, 2017–2026.

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 2026, not grant rows in a single year, so this will not match the grant count on the cover. 67 of the 96 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)
10
Early backer (in before they grew)
67/67
Grantees still filing
36/67
Grew since first funded

Where the money sits, by cause and then by grantee

THE PARKSIDE SCHOOL: $81,000 · OtherTHE PARKSIDE SCHOOLCHILDREN'S RESEARCH FUND LAURIE CHILDREN'S HOSPITAL: $27,500 · OtherCHILDREN'S RESEARCH FUND LAURIE CHILDREN'S HOSPITAL+52 more: $55,354 · Other+52 moreTHE JOFFREY BALLET: $45,500 · Arts & CultureTHE JOFFREY BALLETPRO PUBLICA INC: $1,750 · Arts & Culture+8 more: $4,800 · Arts & Culture+8 moreTHE WINSTON PREPARATORY SCHOOL: $20,000 · EducationTHE WINSTON…SAN FRANCISCO CONSERVATORY OF MUSIC: $3,250 · EducationSAN FRANCIS…The New York Public Library Astor Lenox and Tilden Foundations: $3,000 · EducationThe New Yor…NEW WORLD SYMPHONY INC: $1,500 · EducationCOLLEGE BOUND OPPORTUNITIES: $1,050 · Education+3 more: $2,500 · Education+3 moreNATIONAL NETWORK OF ABORTION FUNDS INC: $23,000 · EnvironmentNATIONAL N…National Network of Abortion Funds: $4,000 · EnvironmentNational N…FLORIDA ACCESS NETWORK: $1,000 · EnvironmentACCESS REPRODUCTIVE CARE - SOUTHEAST: $1,000 · EnvironmentGIVEDIRECTLY INC: $6,000 · Human ServicesMEDICAL DEBT RESOLUTION INC: $3,000 · Human ServicesHUDSON GUILDINC: $2,000 · Human ServicesChild Foundation: $1,000 · Human ServicesRHODE ISLAND ABORTION FUND: $1,000 · Human ServicesWHITE PONY EXPRESS: $800 · Human Services+3 more: $1,500 · Human ServicesAbortion Care for Tennessee: $2,000 · HealthALABAMA COHOSH COLLABORATIVE: $1,000 · HealthTWLOHA INC: $1,000 · HealthBLUE RIDGE ABORTION FUND INC: $1,000 · HealthJTP PROFESSIONAL SERVICE CORPORATION: $1,000 · HealthKentucky Health Justice Network Inc: $1,000 · HealthTHE V FOUNDATION: $800 · HealthTHE FRED HOLLOWS FOUNDATION: $500 · Health+1 more: $100 · HealthBROWN UNIVERSITY: $7,000 · Community ImprovementFOOD BANK FOR NEW YORK CITY: $250 · Community Improvement
Other$163,854Arts & Culture$52,050Education$31,300Environment$29,000Human Services$15,300Health$8,400Community Improvement$7,250

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

25%50%75%100%$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetTHE PARKSIDE SCHOOL: $81,000 over 6y, 0.4% of budgetTHE JOFFREY BALLET: $45,500 over 6y, 0.1% of budgetNATIONAL NETWORK OF ABORTION FUNDS INC: $23,000 over 5y, 0.1% of budgetTHE WINSTON PREPARATORY SCHOOL: $20,000 over 2y, 0.0% of budgetBROWN UNIVERSITY: $7,000 over 6y, 0.0% of budgetGIVEDIRECTLY INC: $6,000 over 4y, 0.0% of budgetNational Network of Abortion Funds: $4,000 over 2y, 0.7% of budgetSAN FRANCISCO CONSERVATORY OF MUSIC: $3,250 over 5y, 0.0% of budgetMEDICAL DEBT RESOLUTION INC: $3,000 over 2y, 0.0% of budgetALI FORNEY CENTER INC: $3,000 over 6y, 0.0% of budgetThe New York Public Library Astor Lenox and Tilden Foundations: $3,000 over 6y, 0.0% of budgetHUDSON GUILDINC: $2,000 over 5y, 0.0% of budgetNATIONAL IMMIGRATION LAW CENTER: $2,000 over 1y, 0.0% of budgetPRO PUBLICA INC: $1,750 over 4y, 0.0% of budgetNEW WORLD SYMPHONY INC: $1,500 over 2y, 0.0% of budgetNORTHERN ILLINOIS FOOD BANK: $1,079 over 4y, 0.0% of budgetCOLLEGE BOUND OPPORTUNITIES: $1,050 over 4y, 0.0% of budgetChild Foundation: $1,000 over 1y, 0.0% of budgetFLORIDA ACCESS NETWORK: $1,000 over 1y, 0.1% of budgetPREGNANCY JUSTICE INC: $1,000 over 1y, 0.0% of budgetSylvia Rivera Law Project Inc: $1,000 over 1y, 0.1% of budgetThe Center for Investigative Reporting formrly Foundation for National Progress: $1,000 over 2y, 0.0% of budgetBROOKLYN PUBLIC LIBRARY: $1,000 over 2y, 0.0% of budgetSurge for Water Inc: $1,000 over 1y, 0.1% of budgetVOLUNTEER LAWYERS FOR THE ARTS INC: $1,000 over 1y, 0.1% of budgetRHODE ISLAND ABORTION FUND: $1,000 over 1y, 0.4% of budgetALABAMA COHOSH COLLABORATIVE: $1,000 over 1y, 0.3% of budgetTWLOHA INC: $1,000 over 1y, 0.0% of budgetNATIONAL IMMIGRATION PROJECT OF THE NATIONAL LAWYERS GUILD INC: $1,000 over 1y, 0.0% of budgetJANE'S DUE PROCESS INC: $1,000 over 1y, 0.1% of budgetPHOENIX SYMPHONY ASSOCIATION: $1,000 over 1y, 0.0% of budgetHISPANIC SCHOLARSHIP FUND: $1,000 over 1y, 0.0% of budgetSPREAD THE VOTE INC: $1,000 over 1y, 0.1% of budgetCAMP LAURELWOOD INC: $1,000 over 2y, 0.0% of budgetCENTER FOR CONSTITUTIONAL RIGHTS: $1,000 over 1y, 0.0% of budgetBLUE RIDGE ABORTION FUND INC: $1,000 over 1y, 0.1% of budgetJTP PROFESSIONAL SERVICE CORPORATION: $1,000 over 1y, 0.0% of budgetACCESS REPRODUCTIVE CARE - SOUTHEAST: $1,000 over 1y, 0.0% of budgetKentucky Health Justice Network Inc: $1,000 over 1y, 0.1% of budgetMORAINE TOWNSHIP CHARITABLE FUND CHARITABLE FUND: $825 over 3y, 0.1% of budgetTHE V FOUNDATION: $800 over 2y, 0.0% of budgetGREATER CHICAGO FOOD DEPOSITORY: $800 over 2y, 0.0% of budgetWHITE PONY EXPRESS: $800 over 1y, 0.0% of budgetBLANK FORMS INC: $750 over 3y, 0.0% of budgetMELA FOUNDATION INC: $750 over 3y, 0.1% of budgetNORTH SUBURBAN LEGAL AID CLINIC: $550 over 2y, 0.0% of budgetAll for Lunch Inc: $500 over 1y, 0.2% of budgetROOM TO READ: $500 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.

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.

National Network of A…The Yelp FoundationAmalgamated Charitabl…The Rockefeller Found…Anderson-Rogers Found…Hopewell FundAbbVie FoundationJewish Federation of …First Bank Chicago Fo…Women Donors NetworkAg FoundationThe Grove Foundation
National Network of Abortion Funds IncOR22× affinity8 shared granteesties to 9 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: National Network of Abortion Funds Inc · The Yelp Foundation · Amalgamated Charitable Foundation Inc · The Rockefeller Foundation · Anderson-Rogers Foundation Inc · Hopewell Fund · AbbVie Foundation · Jewish Federation of Metropolitan Chicago · First Bank Chicago Foundation · Women Donors Network · Ag Foundation · The Grove 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 Nathan Tannenbaum Foundation Inc funds: left to right is the share of its income from government, bottom to top the share from Nathan Tannenbaum Foundation Inc. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 50%0%1%3%5%funder's share of their income ↑0%5%10%15%20%share of the org’s income from government →median 0%
  • New World Symphony Inc: 0% of income from government
no gov moneyreceives it· size = income
5get no government money at all
22report government grants on their 990 we could not trace to a source (not plotted)
0rely on government for over half their income
⤢ axis zoomed · 0–20%
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 Nathan Tannenbaum Foundation Inc?

Find your warmest path to Nathan Tannenbaum 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 from IRS e-file XML, the funder’s own 990/990-PF, and from the multi-year returns of the 96 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

Play a game based on Nathan Tannenbaum’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