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Sundheimer Foundation at a glance

· Private foundation

Sundheimer Foundation

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.

$93k
Granted FY2024still arriving
14
Grants FY2024still arriving
3
States reached
$18k
Largest
01What it fundsRead
02The needRead
03Its granteesRead
04Its fieldRead
05Through PlinthRead
01What it funds
01100% classified

What it funded, over time

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

Education$88kHealth$77kHuman Services$68kInternational$58kCivil Rights$55kArts & Culture$33kFood & Nutrition$27kReligion$15kOther$0
02FY2024 · 14 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2024

  • Under $10k11 grants · $47k
  • $10k–50k3 grants · $46k
$5,000
Median grant
3
States reached
$707k
Total assets
Largest grants
RecipientAmount
RABENSTEIN LEARNING CENTER$18,000
COMMUNITY CTR OF THE ROCKAWAY PENIN$18,000
CENTER FOR INITIATIVES IN JEWISH ED$10,000
JEWISH NATIONAL FUND$5,000
YESHIVA UNIVERSITY$5,000
MANHATTAN EYE EAR HOSPITAL$5,000
LIGHTHOUSE GUILD INTERNATIONAL$5,000
Individual grant recipient$5,000
AMERICAN CIVIL LIBERTIES UNION$5,000
ANTI-DEFAMATION LEAGUE$5,000
US HOLOCAUST MEMORIAL MUSEUM$5,000
RCCS$2,500
BOCA RATON KOLLEL$2,500
LAPID YESHIVA INC$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 (FY17–23, $21k) land where the poverty rate runs at 17%, against an area that typically sits at 10%. 100% of those dollars go to grantees based in above-average-need neighborhoods. Most of its grants land in higher-need ZIPs.

area typical 10%SELF-HELP COMMUNITY SERVICES: $5k → 17%SELF-HELP COMMUNITY SERVICES: $5k → 17%SELF-HELP COMMUNITY SERVICES: $5k → 17%SELF-HELP COMMUNITY SERVICES: $3k → 17%SELF-HELP COMMUNITY SERVICES: $1k → 17%CHILDREN'S AID SOCIETY: $3k → 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.
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.

93%of every dollar goes to organizations it has funded before.
$383k · 20 repeat orgs$29k to everyone else

20 repeat relationships: 8 still active in FY2024, 12 since wound down; 5 grantees were first funded in FY2024 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

20
2

Total granted

$383k
$8k

Median revenue growth · since first grant

+38%
+94%

Still filing today

80%
100%

New vs renewed · share of each year

In FY2024, 75% of grant dollars renewed an existing relationship; $22k went to new ones.

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

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

’17’18’21’22’23’24
InternationalEducationFood & NutritionCivil RightsArts & CulturePhilanthropyOther
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

  • CC
    COMMUNITY CENTER OF THE ROCKAWAY PENINSULA INC
    3× · 2022–2024 · $49k · revenue +278%
  • AL
    ANTI-DEFAMATION LEAGUE
    6× · 2017–2024 · $38k · revenue +78%
  • TU
    The United States Holocaust Memorial Museum
    6× · 2017–2024 · $30k · revenue +25%

Funded once

  • DIRECT RELIEFgraduated
    one grant, 2017 · $5k · revenue +94%
  • JS
    JUILLIARD SCHOOLgraduated
    one grant, 2017 · $3k · revenue +64%
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
Bar Ilan University in Israel Inc

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

—
4
New York City Alliance Against Sexual Assault Inc

The alliance leads new york citys mission to end sexual violence through education, prevention programming, research, and policy change. until we end sexual violence in all forms, we will be here for all survivors and the organizations…

Human Services
5
The Architectural League of New York

The architectural league of new york supports critically transformative work in the allied fields that shape the built environment. as a vital, independent forum, the league stimulates thinking, debate, and action on today's (continued on…

—
6
Jobsfirstnyc

Jobsfirstnyc's mission is to create and advance solutions that break down barriers and transform the systems supporting young adults and their communities in the pursuit of economic opportunities.

Youth Development
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
The Jewish Museum

The mission of the jewish museum is to collect, preserve, exhibit and interpret art and jewish culture. see schedule o for more information.

Arts & Culture
9
Jewish Community Relations Council of New York

Jcrc-ny builds relationships to advance the values, interests and security of the new york jewish community and to create a more interconnected new york for all.

Civil Rights
10
New York City Gay and Lesbian Anti-Violence Project

The new york city gay and lesbian anti-violence project (avp) mission is to empower lgbtq and hiv-affected communities and allies to end all forms of violence through organizing and education, and support survivors through counseling and…

—
11
Shalom School

Shalom school's mission is to provide each child with an outstanding education in a nurturing environment that is academically excellent, inclusive, innovative, and inspired by jewish values and traditions.

—
12
The Population Council Inc

We generate ideas, produce evidence, and design solutions to improve the lives of underserved populations around the world. we take a multidisciplinary, intergenerational, life-cycle approach that contributes to (see schedule o)four global…

International
How this is measured
The grantee most central to the portfolio’s shape is Selfhelp Community Services Inc; the most unlike its peers is Lapid Yeshiva 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

22 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. 22 of the 28 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)
2
Early backer (in before they grew)
22/22
Grantees still filing
17/22
Grew since first funded

Where the money sits, by cause and then by grantee

COMMUNITY CENTER OF THE ROCKAWAY PENINSULA INC: $49,000 · OtherCOMMUNITY CENTER OF THE ROCKAWAY PENINSULA INCRABENSTEIN LEARNING CENTER: $49,000 · OtherRABENSTEIN LEARNING CENTERMANHATTAN EYE EAR HOSPITAL: $26,000 · OtherMANHATTAN EYE EAR HOSPITALCOLON CANCER CHALLENGE FOUNDATION: $20,000 · OtherCOLON CANCER CHALLENGE FOUNDATIONIndividual grant recipient: $15,000 · OtherIndividual grant recipientCENTER FOR INITIATIVES IN JEWISH ED: $10,000 · OtherNEW YORKERS AGAINST GUN VIOLENCE INC: $8,500 · OtherSELFHELP COMMUNITY SERVICES INC: $18,500 · OtherSELFHELP COMMUNITY SERVICES INCTHE AMERICAN SOCIETY FOR THE PREVENTION OF CRUELTY TO ANIMALS: $8,500 · Other+7 more: $25,000 · Other+7 moreMEDECINS SANS FRONTIERES USA INC: $26,000 · InternationalMEDECINS SANS FR…JEWISH NATIONAL FUND (KEREN KAYEMETH LEISRAEL) INC: $24,500 · InternationalJEWISH NATIONAL …DRESS FOR SUCCESS WORLDWIDE: $8,500 · InternationalDRESS FOR SUCCES…DIRECT RELIEF: $5,000 · InternationalDIRECT RELIEFANTI-DEFAMATION LEAGUE: $37,500 · Civil RightsANTI-DEFA…The United States Holocaust Memorial Museum: $30,000 · Arts & CultureCITYMEALS-ON-WHEELS: $18,500 · Food & NutritionCITY HARVEST INC: $8,500 · Food & NutritionLIGHTHOUSE GUILD INTERNATIONAL INC: $24,500 · PhilanthropyYESHIVA UNIVERSITY: $20,000 · EducationJUILLIARD SCHOOL: $2,500 · EducationLAPID YESHIVA INC: $1,800 · Education
Other$229,500International$64,000Civil Rights$37,500Arts & Culture$30,000Food & Nutrition$27,000Philanthropy$24,500Education$24,300

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 budgetCOMMUNITY CENTER OF THE ROCKAWAY PENINSULA INC: $49,000 over 3y, 15% of budgetANTI-DEFAMATION LEAGUE: $37,500 over 6y, 0.0% of budgetThe United States Holocaust Memorial Museum: $30,000 over 6y, 0.0% of budgetMEDECINS SANS FRONTIERES USA INC: $26,000 over 5y, 0.0% of budgetJEWISH NATIONAL FUND (KEREN KAYEMETH LEISRAEL) INC: $24,500 over 6y, 0.0% of budgetLIGHTHOUSE GUILD INTERNATIONAL INC: $24,500 over 6y, 0.0% of budgetYESHIVA UNIVERSITY: $20,000 over 4y, 0.0% of budgetCOLON CANCER CHALLENGE FOUNDATION: $20,000 over 2y, 3.6% of budgetSELFHELP COMMUNITY SERVICES INC: $18,500 over 5y, 0.0% of budgetCITYMEALS-ON-WHEELS: $18,500 over 5y, 0.0% of budgetNEW YORKERS AGAINST GUN VIOLENCE INC: $8,500 over 3y, 13% of budgetCITY HARVEST INC: $8,500 over 3y, 0.0% of budgetDRESS FOR SUCCESS WORLDWIDE: $8,500 over 3y, 0.0% of budgetTHE AMERICAN SOCIETY FOR THE PREVENTION OF CRUELTY TO ANIMALS: $8,500 over 3y, 0.0% of budgetHABITAT FOR HUMANITY NEW YORK CITY AND WESTCHERSTER COUNTY INC: $3,500 over 2y, 0.0% of budgetELIZABETH GLASER PEDIATRIC AIDS FOUNDATION: $3,500 over 2y, 0.0% of budgetSOUTHERN POVERTY LAW CENTER INC: $3,500 over 2y, 0.0% of budgetJUILLIARD SCHOOL: $2,500 over 1y, 0.0% of budgetLAPID YESHIVA INC: $1,800 over 1y, 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.

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 FundNational Philanthropi…American Online Givin…Donor Advised Charita…Fidelity Investments …Amazonsmile Foundation
Jewish Communal FundNY13.8× affinity5 shared granteesties to 5 of 5Hover any node to trace its alignments.Compare side by side →

Open a dossier: Jewish Communal Fund · National Philanthropic Trust · American Online Giving Foundation Inc · Donor Advised Charitable Giving Inc · Fidelity Investments Charitable Gift Fund · Amazonsmile 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 Sundheimer Foundation funds: left to right is the share of its income from government, bottom to top the share from Sundheimer Foundation. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 00%1%5%11%20%funder's share of their income ↑0%25%50%75%100%share of the org’s income from government →
    no gov moneyreceives it· size = income
    0get no government money at all
    8report 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
    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 Sundheimer Foundation?

    Find your warmest path to Sundheimer Foundation 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 28 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 Sundheimer’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