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New York · 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 FY2024(still arriving)
14
Grants FY2024
10
Organizations funded FY2023
0%
First-time grantees FY2023
Read the full brief
Median grant, FY2024
$5,000
Largest grant, FY2024
$18,000
Organizations funded a year
10 to 18
FY2017 to FY2023
States reached, FY2024
3
Total assets, FY2024
$707k
Applications
Preselected organizations only
Per its most recent filing; check its own site

How open it is to new grantees

In FY2023, 0% of the organizations Sundheimer Foundation funded were first-time grantees, receiving 0% of its grant dollars.

New vs renewed · share of each year

In FY2023, 100% of grant dollars renewed an existing relationship; $0 went to new ones.

50%100%’18’21’22’23
RenewedFirst-time

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

’18’21’22’23
EducationOther
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.
The numbers by year
Fiscal yearOrganizations fundedTo those organizationsFirst-time grantees
FY2024still arriving13$88k38%
FY202310$72k0%
FY202212$75k17%
FY202113$60k15%
FY201815$30k0%
FY201718$88kn/a
100% 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

Top grantees

Largest recipients by total granted, FY2017 to FY2024, and the share of each one’s budget the grants supplied at peak.

Show all 20 grantees

What it could do for these grantees

Plus 7 recipients with no EIN on record ($112k), not named here.

Where it is load-bearing

Each grantee by its size and the share of its budget Sundheimer Foundation supplied at peak.

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 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

Tap a dot to name the grantee.

How this is measured
Share of budget is the funder’s grant in a year over the grantee’s total revenue that year, at its highest across the years we hold; revenue is from all sources. Only grantees confirmed against their own filings, whose grants do not exceed their revenue, are plotted: the largest 18.

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 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.

Compare Sundheimer Foundation with peer funders

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.

About Sundheimer Foundation

How much does Sundheimer Foundation give?
Sundheimer Foundation reported 14 grants totaling $92,800 in its FY2024 IRS filing. It funded between 10 and 18 organizations a year over FY2017 to FY2023.
What does Sundheimer Foundation fund?
By grant dollars over FY2017 to FY2024, its largest causes are Education (20%), Health (17%), Human Services (15%).
Who are Sundheimer Foundation's largest grantees?
By total granted over FY2017 to FY2024: Community Center of the Rockaway Peninsula Inc ($49k), Anti-Defamation League ($38k), The United States Holocaust Memorial Museum ($30k).
Does Sundheimer Foundation fund new organizations?
In FY2023, 0% of the organizations it funded were first-time grantees.
Does Sundheimer Foundation accept unsolicited applications?
Its most recent filing reports that it funds preselected organizations and does not take unsolicited requests. Check the foundation's own site before ruling it out.
Which funders back the same organizations as Sundheimer Foundation?
Its strongest co-funders, measured against what their size predicts, include Jewish Communal Fund, National Philanthropic Trust, American Online Giving Foundation Inc.
Where is Sundheimer Foundation based?
Sundheimer Foundation is based in NY.

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

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