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· Private foundation

Thomas E Sullivan and Barbara a Sullivan Foundation

Its FY2025 filing reports that it accepted unsolicited grant applications.

$68k
Granted FY2025still arriving
19
Grants FY2025still arriving
6
States reached
$25k
Largest
01What it funds
0193% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2025.

Health$201kReligion$115kEducation$97kSocial Science$30kRecreation & Sports$27kHousing & Shelter$22kPhilanthropy$15kHuman Services$13kOther$0
02FY2025 · 19 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2025

  • Under $10k16 grants · $21k
  • $10k–50k3 grants · $47k
$1,000
Median grant
6
States reached
$430k
Total assets
Largest grants
RecipientAmount
THE EPIPHANY SCHOOL FOUNDATION$25,000
ST ANNE'S CHURCH$12,000
HUDSON INSTITUTE$10,000
NYU LANGONE$5,500
GARDEN CITY ATHL ASSOC CHALL DIVISI$3,000
HOLY CROSS HIGH SCHOOL$2,500
HAGEDORN LITTLE VILLAGE SCHOOL$1,000
Individual grant recipient$1,000
JL CARES$1,000
JACK FANNING MEMORIAL FOUNDATION$1,000
TOMORROWS HOPE FOUNDATION$1,000
LIFE'S ANGELS$1,000
ST JOSEPH'S CHURCH$1,000
Individual grant recipient$555
TUNNEL TO TOWERS$500
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:

Dollar for dollar, its grants (FY24–25) land where the poverty rate runs at 11%, against an area that typically sits at 10%. 54% of its dollars go to grantees based in above-average-need neighborhoods. Its grants spread fairly evenly across need levels.

area typical 10%PITTSBURGH MARATHON: $555 → 11%ORIGEN PROJECT: $500 → 9%PENINSULA KIWANIS: $500 → 6%ALZHEIMER'S ASSOCIATION: $500 → 7%TUNNEL TO TOWERS: $500 → 11%HOLY CROSS HIGH SCHOOL: $6k → 13%NYU LANGONE: $6k → 17%HUDSON INSTITUTE: $10k → 14%SHATTERPROOF: $1k → 9%ST JUDE CHILDREN'S RESEARCH HOSPITA: $250 → 17%JACK FANNING MEMORIAL FOUNDATION: $1k → 8%JL CARES: $1k → 9%ALZHEIMER'S ASSOCIATION: $200 → 14%WEST DOVER FIRE DEPARTMENT: $250 → 11%HAGEDORN LITTLE VILLAGE SCHOOL: $1k → 6%TUNNEL TO TOWERS: $250 → 11%HOLY CROSS HIGH SCHOOL: $3k → 13%THE EPIPHANY SCHOOL FOUNDATION: $25k → 17%HUDSON INSTITUTE: $10k → 14%HAGEDORN LITTLE VILLAGE SCHOOL: $1k → 6%THE EPIPHANY SCHOOL FOUNDATION: $15k → 17%TOMORROWS HOPE FOUNDATION: $1k → 6%ST JUDE CHILDREN'S RESEARCH HOSPITA: $500 → 17%ST ANNE'S CHURCH: $12k → 6%ST JOSEPH'S CHURCH: $8k → 6%ST ANNE'S CHURCH: $8k → 6%GARDEN CITY ATHL ASSOC CHALL DIVISI: $3k → 6%GARDEN CITY ATHL ASSOC CHALL DIVISI: $3k → 6%FAMILY CHILDREN'S ASSOCIATION: $1k → 6%MOLLIE BIGGANE FOUNDATION: $1k → 6%LIFE'S ANGELS: $1k → 6%JVL OPEN: $1k → 6%ST JOSEPH'S CHURCH: $1k → 6%LIFE'S ANGELS: $1k → 6%GARDEN CITY PBA: $250 → 6%GARDEN CITY FIRE DEPARTMENT: $250 → 6%GARDEN CITY FIRE DEPARTMENT: $250 → 6%VILLAGE OF HEMPSTEAD PAL: $6k → 6%NY DISTRICT KIWANIS FOUNDATION: $1k → 6%JVL OPEN: $1k → 6%WINTHROP HOSPITAL: $5k → 6%LIU DEVELOPMENT: $3k → 6%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

VT
WA
IL
NY
PA
CT
CA
TN
NC
DC
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.

87%of every dollar goes to organizations it has funded before.
$480k · 40 repeat orgs$70k to everyone else

40 repeat relationships: 12 still active in FY2025, 28 since wound down; 7 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

40
54

Total granted

$480k
$60k

Median revenue growth · since first grant

+9%
+14%

Still filing today

43%
46%

New vs renewed · share of each year

In FY2025, 85% of grant dollars renewed an existing relationship; $10k went to new ones.

50%100%’17’18’19’20’21’22’23’24’25
RenewedFirst-time

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

’17’18’19’20’21’22’23’24’25
HealthEducationPhilanthropyHuman ServicesHousing & ShelterRecreation & SportsOther
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

  • TE
    THE EPIPHANY SCHOOL FOUNDATION INC
    2× · 2024–2025 · $40k · revenue +20%
  • HI
    Hudson Institute Inc
    3× · 2022–2025 · $30k · revenue +166%
  • GC
    GARDEN CITY ATHLETIC ASSOCIATION
    3× · 2017–2019 · $9k · revenue +55%

Funded once

  • DR
    DIABETES RESEARCH INSTITUTE FOUNDATION INC
    one grant, 2022 · $10k · revenue -1%
  • VO
    VILLAGE OF HEMPSTEAD PAL INC
    one grant, 2024 · $6k · revenue 0%
  • TA
    THE ACADEMY CHARTER SCHOOLgraduated
    one grant, 2020 · $5k · revenue +129%
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 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
2
Staten Island University Hospital Foundation

The mission of staten island university hospital's foundation is to achieve philanthropic relationships for support and endowment, providing highest quality care, services and state of the art equipment. philanthropy has played an…

Health
3
Children's Hospital Corporation

Provider of pediatric healthcare, education, research & community service

Health
4
Long Island Jewish Medical Center

Long island jewish medical center is part of the northwell health ("northwell"), which strives to improve the health of the communities it serves and is committed to providing the highest quality clinical care; educating the current and…

Health
5
Northwell Health Foundation

Northwell health foundation inc. is dedicated toward helping donors, patients, and leaders link their vision and philanthropic support toward helping the underserved and uninsured, advancing the latest frontiers in medical technology and…

Health
6
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
7
Nyu Langone Hospitals

The board adopted mission statement is: nyu langone hospitals (the "hospital") will operate with new york university's medical schools a health system ("nyu langone health") devoted to excellence in patient care, education and research. in…

Health
8
North Shore University Hospital

North shore university hospital is part of northwell health ("northwell"), which strives to improve the health of the communities it serves and is committed to providing the highest quality clinical care; educating the current and future…

Health
9
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
10
Brookhaven Health Care Services Corp

The goals and objectives of the foundation are as follows:to support the mission and charitable purposes of nyulhs, nyu langone hospitals ("nyulh"), lich and the medical schools owned and operated by new york university (collectively, "nyu…

Health
11
Long Island Community Hospital At Nyu Langone Health

The goals and objectives of the corporation are as follows:(a) to operate and maintain a nonsectarian, general hospital at one or more locations for the furnishing of inpatient, ambulatory, restorative, preventative and emergency medical…

—
12
Glen Cove Hospital

Glen cove hospital is part of northwell health, inc. ("northwell"), which strives to improve the health of the communities it serves and is committed to providing the highest quality geriatric care; educating the current and future…

Health
How this is measured
The grantee most central to the portfolio’s shape is St Baldrick's Foundation Inc; the most unlike its peers is Garden City Real Estate Professionals 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

47 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. 47 of the 101 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)
5
Early backer (in before they grew)
46/47
Grantees still filing
29/47
Grew since first funded

Where the money sits, by cause and then by grantee

WINTHROP HOSPITAL: $151,700 · OtherWINTHROP HOSPITALST. JOSEPH'S CHURCH: $64,350 · OtherST. JOSEPH'S CHURCHHudson Institute Inc: $30,000 · OtherHudson Institute IncHOLY CROSS HIGH SCHOOL OF BAYSIDE: $26,500 · OtherHOLY CROSS HIGH SCHOOL OF BAYSIDEEPIPHANY FOUNDATION: $22,500 · OtherEPIPHANY FOUNDATIONST ANNE'S CHURCH: $20,000 · Other+61 more: $87,307 · Other+61 moreTHE EPIPHANY SCHOOL FOUNDATION INC: $40,000 · PhilanthropyTHE EPIPH…+6 more: $3,800 · Philanthropy+6 moreMOLLIE BIGGANE MELANOMA FOUNDATION INC: $14,650 · HealthDIABETES RESEARCH INSTITUTE FOUNDATION INC: $10,181 · HealthSHATTERPROOF A NONPROFIT CORPORATION: $6,000 · HealthLIFES ANGELS INC co Brett Dunne: $2,000 · HealthMEDISYS HEALTH NETWORK INC: $2,000 · Health+8 more: $3,118 · HealthMAKE IT COUNT FOUNDATION: $21,001 · Housing & ShelterJL Cares: $1,000 · Housing & ShelterTHE HAGEDORN LITTLE VILLAGE SCHOOL: $8,000 · EducationTHE ACADEMY CHARTER SCHOOL: $5,000 · EducationSTEPHEN SILLER TUNNEL TO TOWERS FOUNDATION: $2,470 · EducationMONMOUTH UNIVERSITY INC: $2,000 · EducationKENNEDY CHILDRENS CENTER: $1,000 · EducationMARINE CORPS-LAW ENFORCEMENT FOUNDA FOUNDATION INC: $1,000 · Education+1 more: $500 · EducationGARDEN CITY ATHLETIC ASSOCIATION: $8,500 · Recreation & SportsLONG ISLAND SLED HOCKEY INC: $6,000 · Recreation & SportsUNITED SOUTH END SETTLEMENTS: $6,250 · Human ServicesAndy Foundation: $2,500 · Human ServicesACE IN THE HOLE FOUND: $500 · Human Services
Other$402,357Philanthropy$43,800Health$37,949Housing & Shelter$22,001Education$19,970Recreation & Sports$14,500Human Services$9,250

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 budgetTHE EPIPHANY SCHOOL FOUNDATION INC: $40,000 over 2y, 2.9% of budgetHudson Institute Inc: $30,000 over 3y, 0.0% of budgetMAKE IT COUNT FOUNDATION: $21,001 over 2y, 24% of budgetMOLLIE BIGGANE MELANOMA FOUNDATION INC: $14,650 over 3y, 3.5% of budgetDIABETES RESEARCH INSTITUTE FOUNDATION INC: $10,181 over 1y, 0.1% of budgetGARDEN CITY ATHLETIC ASSOCIATION: $8,500 over 3y, 0.9% of budgetTHE HAGEDORN LITTLE VILLAGE SCHOOL: $8,000 over 8y, 0.0% of budgetUNITED SOUTH END SETTLEMENTS: $6,250 over 3y, 0.1% of budgetVILLAGE OF HEMPSTEAD PAL INC: $6,192 over 1y, 8.5% of budgetSHATTERPROOF A NONPROFIT CORPORATION: $6,000 over 2y, 0.0% of budgetTHE ACADEMY CHARTER SCHOOL: $5,000 over 1y, 0.0% of budgetNYU WINTHROP HOSPITAL: $3,000 over 1y, 0.0% of budgetBIG BROTHERS BIG SISTERS OF LONG ISLAND INC: $2,500 over 1y, 0.1% of budgetGARDEN CITY FIRE DEPARTMENT INC: $2,500 over 9y, 0.3% of budgetAndy Foundation: $2,500 over 1y, 1.1% of budgetSTEPHEN SILLER TUNNEL TO TOWERS FOUNDATION: $2,470 over 6y, 0.0% of budgetMONMOUTH UNIVERSITY INC: $2,000 over 2y, 0.0% of budgetLIFES ANGELS INC co Brett Dunne: $2,000 over 2y, 0.8% of budgetMEDISYS HEALTH NETWORK INC: $2,000 over 1y, 0.0% of budgetGARDEN CITY PBA: $1,200 over 4y, 0.3% of budgetGarden City Real Estate Professionals Foundation Inc: $1,000 over 1y, 0.7% of budgetDAVID M. DUFFY JR. FOUNDATION: $1,000 over 1y, 0.6% of budgetThe Jack Fanning Memorial Foundation: $1,000 over 1y, 1.3% of budgetKENNEDY CHILDRENS CENTER: $1,000 over 1y, 0.0% of budgetMARINE CORPS-LAW ENFORCEMENT FOUNDA FOUNDATION INC: $1,000 over 1y, 0.0% of budgetJL Cares: $1,000 over 1y, 0.9% of budgetAmerican Heart Association Inc: $700 over 2y, 0.0% of budgetTHE ANDREW MCDONOUGH B FOUNDATION: $550 over 3y, 0.0% of budgetBOOMER ESIASON FOUNDATION: $544 over 1y, 0.0% of budgetROTACARE INC: $515 over 1y, 0.5% of budgetACE IN THE HOLE FOUND: $500 over 1y, 0.7% of budgetCELLINI CHARITABLE FOUNDATION, INC.: $500 over 1y, 0.8% of budgetLOGGERHEAD MARINELIFE CENTER INC: $500 over 1y, 0.0% of budgetNEW YORK ROAD RUNNERS INC: $500 over 1y, 0.0% of budgetAngels on the Bay Inc: $350 over 1y, 0.2% of budgetDeerfield Valley Rescue Inc: $350 over 2y, 0.0% of budgetThe Houston Food Bank: $300 over 1y, 0.0% of budgetHEADSTRONG FOUNDATION: $259 over 1y, 0.0% of budgetGIRL SCOUTS OF NASSAU COUNTY INC: $250 over 1y, 0.0% of budgetST JUDE CHILDREN'S RESEARCH HOSPITAL INC: $250 over 1y, 0.0% of budgetST BALDRICK'S FOUNDATION INC: $250 over 1y, 0.0% of budgetThe Garden City Historical Society: $250 over 1y, 0.3% of budgetALZHEIMER'S DISEASE & RELATED DISORDERS ASSOCIATION INC: $200 over 1y, 0.0% of budgetJupiter Medical Center Foundation Inc: $200 over 1y, 0.0% of budgetBLOOD CANCER UNITED INC: $100 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 THE EPIPHANY SCHOOL FOUNDATION INC ↗
  • Who funds Hudson Institute Inc ↗
  • Who funds MAKE IT COUNT FOUNDATION ↗
  • Who funds MOLLIE BIGGANE MELANOMA FOUNDATION INC ↗
  • Who funds DIABETES RESEARCH INSTITUTE FOUNDATION INC ↗
  • Who funds GARDEN CITY ATHLETIC ASSOCIATION ↗
  • Who funds THE HAGEDORN LITTLE VILLAGE SCHOOL ↗
  • Who funds UNITED SOUTH END SETTLEMENTS ↗
  • Who funds VILLAGE OF HEMPSTEAD PAL INC ↗
  • Who funds SHATTERPROOF A NONPROFIT CORPORATION ↗
  • Who funds LONG ISLAND SLED HOCKEY INC ↗
  • Who funds THE ACADEMY CHARTER SCHOOL ↗
  • Who funds NYU WINTHROP HOSPITAL ↗
  • Who funds BIG BROTHERS BIG SISTERS OF LONG ISLAND INC ↗
  • Who funds GARDEN CITY FIRE DEPARTMENT INC ↗
  • Who funds Andy Foundation ↗
  • Who funds STEPHEN SILLER TUNNEL TO TOWERS FOUNDATION ↗
  • Who funds MONMOUTH UNIVERSITY INC ↗
  • Who funds LIFES ANGELS INC co Brett Dunne ↗
  • Who funds MEDISYS HEALTH NETWORK 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.

Mutual of America FoundationNY16.1× affinity6 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Mutual of America Foundation · The NEIL&AMY McGoldrick Charitable Foundation · McKeen Fund · The Goldman Sachs Charitable Gift Fund · The Pfizer Foundation Inc · Morgan Stanley Global Impact Funding Trust Inc · The Bank of America Charitable Foundation Inc · National Philanthropic Trust · American Endowment Foundation · Network for Good · Vanguard Charitable Endowment Program · American Online Giving Foundation Inc

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 Thomas E Sullivan and Barbara a Sullivan Foundation funds: left to right is the share of its income from government, bottom to top the share from Thomas E Sullivan and Barbara a Sullivan Foundation. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 10%1%3%6%10%funder's share of their income ↑0%3%5%8%10%share of the org’s income from government →median 2%
  • Shatterproof a Nonprofit Corporation: 2% of income from government
no gov moneyreceives it· size = income
1get no government money at all
1report government grants on their 990 we could not trace to a source (not plotted)
0rely on government for over half their income
⤢ axis zoomed · 0–10%
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 Thomas E Sullivan and Barbara a Sullivan Foundation?

Find your warmest path to Thomas E Sullivan and Barbara a Sullivan 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 101 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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