Skip to content

· Private foundation

The Sosnow Foundation Inc

Its FY2023 filing reports that it funds preselected organizations and did not take unsolicited requests; check the foundation's own site before ruling it out.

$353k
Granted FY2023
47
Grants FY2023
7
States reached
$100k
Largest
01What it funds
0190% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2023.

Arts & Culture$1.1MReligion$558kEducation$215kPhilanthropy$175kPublic Benefit$79kHealth$76kHuman Services$38kRecreation & Sports$30kOther$0
02FY2023 · 47 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2023

  • Under $10k37 grants · $57k
  • $10k–50k7 grants · $97k
  • $50k–250k3 grants · $200k
$1,000
Median grant
7
States reached
$0
Total assets
Largest grants
RecipientAmount
THE SOCIETY OF THE FOUR ARTS$100,000
SOLOMON LEADERSHIP PROGRAM$50,000
PALM BEACH SYNAGOGUE$50,000
NORTON MUSEUM OF ART$25,000
STONY BROOK FOUNDATION INC$15,000
MORSE LIFE$13,000
METROPOLITAN MUSEUM OF ART$12,500
JEWISH FEDERATION OF PALM BEACH$11,000
IF FOUNDATION$10,000
PALM BEACH ATLANTIC UNIVERSITY INC$10,000
KRAVIS CENTER$9,850
PLANNED PARENTHOOD OF SE FL$5,000
HENRY STREET SETTLEMENT$5,000
MILLBROOK SCHOOL ANNUAL FUND$4,700
SOLOMON INSTITUTE INC$4,000
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 (FY17–23, $38k) land where the poverty rate runs at 14%, against an area that typically sits at 10%. 67% of those dollars go to grantees based in above-average-need neighborhoods. Most of its grants land in higher-need ZIPs.

area typical 10%THE SUNRISE ASSOCIATION: $350 → 6%SUNCOAST HOSPICE: $100 → 12%SID JACOBSON JEWISH COMMUNITY CENTER: $500 → 6%AT HOME IN DARIEN: $2k → 9%AT HOME IN DARIEN: $2k → 9%AT HOME IN DARIEN: $2k → 9%AT HOME IN DARIEN: $1k → 9%AT HOME IN DARIEN: $1k → 9%AT HOME IN DARIEN: $1k → 9%AT HOME IN DARIEN: $1k → 9%HENRY STREET SETTLEMENT: $10k → 17%HENRY STREET SETTLEMENT: $10k → 17%HENRY STREET SETTLEMENT: $5k → 17%THE CHILDREN'S AID SOCIETY: $350 → 17%CHILDREN'S LEARNING CENTERS OF FAIRFIELD COUNTY: $2k → 9%CHILDREN'S LEARNING CENTERS OF FAIRFIELD COUNTY: $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

MN
NY
WY
OH
NJ
CT
CA
CO
KY
VA
MD
AZ
NC
SC
DC
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.

95%of every dollar goes to organizations it has funded before.
$2.1M · 63 repeat orgs$100k to everyone else

63 repeat relationships: 35 still active in FY2023, 28 since wound down; 11 grantees were first funded in FY2023 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

63
51

Total granted

$2.1M
$67k

Median revenue growth · since first grant

+38%
+46%

Still filing today

59%
59%

New vs renewed · share of each year

In FY2023, 90% of grant dollars renewed an existing relationship; $33k went to new ones.

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

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

’17’18’19’20’21’22’23
Arts & CultureEducationHuman ServicesPhilanthropyHealthInternationalOther
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

  • NORTON MUSEUM OF ART INC
    5× · 2017–2023 · $786k · revenue +101%
  • TS
    The Society of the Four Arts Inc
    2× · 2020–2023 · $125k · revenue ×11
  • RF
    RAYMOND F KRAVIS CENTER FOR THE PERFORMING ARTS INC
    6× · 2017–2023 · $67k · revenue +72%

Funded once

  • SR
    SOLOMON R GUGGENHEIM FOUNDATIONgraduated
    one grant, 2017 · $10k · revenue +43%
  • TI
    THE IOVINO FOUNDATION
    one grant, 2022 · $10k
  • CA
    CHABAD AT THE CIVIC CENTER
    one grant, 2021 · $5k
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
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
2
United States Naval Institute

Provide an independent forum for those who dare to read, think, speak, and write to advance the professional, literary, and scientific understanding of sea power and other issues critical to global security.

—
3
University of New Haven

The University of New Haven is a student-centered comprehensive university with an emphasis on excellence in liberal arts and professional education. Our mission is to prepare our students to lead purposeful and fulfilling lives in a…

Education
4
Neurology Associates of Stony Brook University Faculty Practice Corp

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

Health
5
Albert Einstein College of Medicine

Committed to exceptional healthcare quality for all and actively engaged with our community, einstein drives scientific discovery and educates compassionate leaders in health and science.

Education
6
Boston Architectural College

The bac is committed to provide excellence in design education grounded in practice and accessible to diverse communities.

—
7
Stony Brook Surgical Associates University Faculty Practice Corporation

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

Health
8
Stony Brook Urology University Faculty Practice Corporation

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

Health
9
Stony Brook Internists University Faculty Practice Corporation

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

Health
10
Stony Brook Ophthalmology University Faculty Practice Corporation

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

Health
11
The Trustees of Princeton University

Research, education and general - princeton university is a private not-for-profit, non-sectarian institution of higher learning with approximately 5,700 undergraduate and 3,300 graduate students. 2,500 students graduated in the 2024-2025…

Education
12
Foundation for Jewish Philanthropies Inc

See schedule othe organization is a not-for-profit, public charity established in 1911 to provide for the quality and continuity of jewish life in western new york and around the world through private philanthropy. the foundation seeks,…

Philanthropy
How this is measured
The grantee most central to the portfolio’s shape is Jewish Federation of Palm Beach County Inc; the most unlike its peers is Greystone Foundation. 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

75 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. 75 of the 126 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)
14
Early backer (in before they grew)
75/75
Grantees still filing
60/75
Grew since first funded

Where the money sits, by cause and then by grantee

NORTON MUSEUM OF ART INC: $785,575 · Arts & CultureNORTON MUSEUM OF ART INCThe Society of the Four Arts Inc: $125,000 · Arts & CultureThe Society of the Four Arts IncRAYMOND F KRAVIS CENTER FOR THE PERFORMING ARTS INC: $67,496 · Arts & CultureRAYMOND F KRAVIS CENTER FOR THE PERFORMING ARTS INC+17 more: $75,800 · Arts & Culture+17 morePALM BEACH ORTHODOX SYNAGOGUE INC: $423,000 · OtherPALM BEACH ORTHODOX SYNAGOGUE INCMORSE LIFE: $116,800 · OtherMORSE LIFESOLOMON LEADERSHIP PROGRAM: $75,000 · OtherSOLOMON LEADERSHIP PROGRAMIndividual grant recipient: $36,400 · OtherPLANNED PARENTHOOD OF SE FL: $35,000 · OtherMILLBROOK SCHOOL ANNUAL FUND: $31,700 · Other+74 more: $155,841 · Other+74 moreJEWISH FEDERATION OF PALM BEACH COUNTY INC: $133,500 · PhilanthropyJEWISH FE…ATLANTIC GOLF CLUB EDUCATIONAL FUND INC: $43,900 · PhilanthropyATLANTIC …BAY AREA LYME FOUNDATION: $11,500 · PhilanthropyBAY AREA …+4 more: $13,328 · Philanthropy+4 moreTHE RED OAKS SCHOOL INC: $37,500 · EducationPALM BEACH ATLANTIC UNIVERSITY INC: $35,000 · EducationTHE NEW CANAAN COUNTRY SCHOOL INCORPORATED: $26,250 · EducationSTONY BROOK FOUNDATION INC: $15,000 · EducationMORRISTOWN-BEARD SCHOOL: $5,000 · Education+5 more: $8,950 · EducationHENRY STREET SETTLEMENT: $25,000 · Human ServicesAT HOME IN DARIENINC: $8,750 · Human ServicesCHILDREN'S LEARNING CENTERS OF FAIRFIELD COUNTY INC: $3,000 · Human Services+4 more: $1,300 · Human ServicesHEBREW WIZARDS INC: $9,900 · ReligionSOLOMON INSTITUTE INC: $4,000 · Public Benefit
Arts & Culture$1,053,871Other$873,741Philanthropy$202,228Education$127,700Human Services$38,050Religion$9,900Public Benefit$4,000

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 budgetNORTON MUSEUM OF ART INC: $785,575 over 5y, 1.8% of budgetJEWISH FEDERATION OF PALM BEACH COUNTY INC: $133,500 over 5y, 0.2% of budgetThe Society of the Four Arts Inc: $125,000 over 2y, 0.5% of budgetRAYMOND F KRAVIS CENTER FOR THE PERFORMING ARTS INC: $67,496 over 6y, 0.1% of budgetATLANTIC GOLF CLUB EDUCATIONAL FUND INC: $43,900 over 6y, 1.7% of budgetTHE RED OAKS SCHOOL INC: $37,500 over 4y, 0.3% of budgetPALM BEACH ATLANTIC UNIVERSITY INC: $35,000 over 2y, 0.0% of budgetTHE NEW CANAAN COUNTRY SCHOOL INCORPORATED: $26,250 over 6y, 0.0% of budgetHENRY STREET SETTLEMENT: $25,000 over 3y, 0.0% of budgetCOLORADO MAHLERFEST: $22,500 over 4y, 3.0% of budgetMETROPOLITAN MUSEUM OF ART: $20,000 over 3y, 0.0% of budgetSTONY BROOK FOUNDATION INC: $15,000 over 1y, 0.0% of budgetPALM BEACH COUNTRY CLUB INC: $11,500 over 6y, 0.0% of budgetBAY AREA LYME FOUNDATION: $11,500 over 2y, 0.3% of budgetSOLOMON R GUGGENHEIM FOUNDATION: $10,000 over 1y, 0.0% of budgetHEBREW WIZARDS INC: $9,900 over 7y, 0.9% of budgetAT HOME IN DARIENINC: $8,750 over 7y, 0.6% of budgetTown of Palm Beach United Way Inc: $5,778 over 3y, 0.0% of budgetAmerican Friends of Israel Philharmonic Orchestra: $5,750 over 3y, 0.0% of budgetTHE COMMUNITY FUND OF DARIEN: $5,600 over 7y, 0.1% of budgetMORRISTOWN-BEARD SCHOOL: $5,000 over 2y, 0.0% of budgetWINNEBAGO ALUMNI ASSOCIATION INC: $4,150 over 6y, 0.6% of budgetSOLOMON INSTITUTE INC: $4,000 over 1y, 0.8% of budgetCenter for Educational Innovation Inc: $3,000 over 1y, 0.0% of budgetCHILDREN'S LEARNING CENTERS OF FAIRFIELD COUNTY INC: $3,000 over 2y, 0.0% of budgetICAHN SCHOOL OF MEDICINE AT MOUNT SINAI: $2,850 over 2y, 0.0% of budgetGREATER NEWBURGH SYMPHONY ORCHESTRA CORP: $2,650 over 6y, 0.3% of budgetGREYSTONE FOUNDATION: $2,500 over 1y, 0.2% of budgetALZHEIMER'S DRUG DISCOVERY FOUNDATION: $2,500 over 1y, 0.0% of budgetCHAMBER MUSIC SOCIETY OF PALM BEACH INC: $2,500 over 1y, 0.4% of budgetUNITED JEWISH APPEAL-FEDERATION OF JEWISH PHILANTHROPIES OF NEW YORK INC: $1,750 over 3y, 0.0% of budgetPREP FOR PREP: $1,500 over 2y, 0.0% of budgetThe Palm Beach Police and Fire Foundation Inc: $1,500 over 2y, 0.0% of budgetMUSEUM OF JEWISH HERITAGE A LIVING MEMORIAL TO THE HOLOCAUST: $1,200 over 2y, 0.0% of budgetDARIEN LIBRARY INC: $1,150 over 6y, 0.0% of budgetTHE BREAST CANCER RESEARCH FOUNDATION INC: $1,050 over 2y, 0.0% of budgetNATIONAL ALLIANCE FOR RESEARCH ON SCHIZOPHRENIA AND DEPRESSION: $1,000 over 2y, 0.0% of budgetJAZZ AT LINCOLN CENTER INC: $1,000 over 1y, 0.0% of budgetGIFT OF LIFE MARROW REGISTRY INC: $1,000 over 1y, 0.0% of budgetAMERICAN FRIENDS OF HEBREW UNIVERSITY INC: $1,000 over 1y, 0.0% of budgetMALTZ JUPITER THEATRE INC: $1,000 over 1y, 0.0% of budgetMIAMI CITY BALLET INC: $1,000 over 1y, 0.0% of budgetSYLVESTER MANOR EDUCATIONAL FARM INC: $1,000 over 1y, 0.0% of budgetEQUINE ADVOCATES INCORPORATED: $1,000 over 1y, 0.0% of budgetBIRTHRIGHT ISRAEL FOUNDATION: $1,000 over 1y, 0.0% of budgetARIZONA SCIENCE CENTER: $900 over 1y, 0.0% of budgetANDREW SHAW MEMORIAL TRUST: $775 over 5y, 0.0% of budgetHIAS INC: $750 over 2y, 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 NORTON MUSEUM OF ART INC ↗
  • Who funds JEWISH FEDERATION OF PALM BEACH COUNTY INC ↗
  • Who funds The Society of the Four Arts Inc ↗
  • Who funds RAYMOND F KRAVIS CENTER FOR THE PERFORMING ARTS INC ↗
  • Who funds ATLANTIC GOLF CLUB EDUCATIONAL FUND INC ↗
  • Who funds THE RED OAKS SCHOOL INC ↗
  • Who funds PALM BEACH ATLANTIC UNIVERSITY INC ↗
  • Who funds THE NEW CANAAN COUNTRY SCHOOL INCORPORATED ↗
  • Who funds HENRY STREET SETTLEMENT ↗
  • Who funds COLORADO MAHLERFEST ↗
  • Who funds METROPOLITAN MUSEUM OF ART ↗
  • Who funds STONY BROOK FOUNDATION INC ↗
  • Who funds PALM BEACH COUNTRY CLUB INC ↗
  • Who funds BAY AREA LYME FOUNDATION ↗
  • Who funds SOLOMON R GUGGENHEIM FOUNDATION ↗
  • Who funds HEBREW WIZARDS INC ↗
  • Who funds AT HOME IN DARIENINC ↗
  • Who funds Town of Palm Beach United Way Inc ↗
  • Who funds American Friends of Israel Philharmonic Orchestra ↗
  • Who funds THE COMMUNITY FUND OF DARIEN ↗
  • Who funds MORRISTOWN-BEARD SCHOOL ↗
  • Who funds COLUMBUS CITIZENS FOUNDATION INC ↗
  • Who funds WINNEBAGO ALUMNI ASSOCIATION INC ↗
  • Who funds SOLOMON INSTITUTE 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.

Fairfield County's Community Foundation IncCT22.3× affinity9 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Fairfield County's Community Foundation Inc · Jewish Communal Fund · The Goodnow Fund · The Darien Foundation Inc · The Darrell Harvey Family Foundation Inc · The Edward E Hood Jr Foundation · The Goldman Sachs Charitable Gift Fund · Mutual of America Foundation · Select Equity Group Foundation · Ibm International Foundation · Riley Family Foundation · Alexandra 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 Sosnow Foundation Inc funds: left to right is the share of its income from government, bottom to top the share from The Sosnow Foundation Inc. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 120%0%1%3%5%funder's share of their income ↑0%25%50%75%100%share of the org’s income from government →median 9%
  • Hias Inc: 88% of income from government
  • Children's Learning Centers of Fairfield County Inc: 36% of income from government
  • Aspetuck Land Trust: 28% of income from government
  • Boys & Girls Club of Stamford Inc: 17% of income from government
  • The Community Fund of Darien: 9% of income from government
  • Pillar Care Continuum: 1% of income from government
  • The Armory Art Center Inc: 0% of income from government
  • Darien Nature Center Inc: 0% of income from government
  • Palm Beach Atlantic University Inc: 0% of income from government
  • Morristown-Beard School: 0% of income from government
no gov moneyreceives it· size = income
12get no government money at all
21report government grants on their 990 we could not trace to a source (not plotted)
1rely 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 The Sosnow Foundation Inc?

Find your warmest path to The Sosnow 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 126 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 2023, released 2023. Filings run roughly 12 to 24 months behind; figures are dated accordingly.

Source object · view filing

Play a game based on Sosnow’s filings →

More from the funding graph