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Calf Island Foundation at a glance

· Private foundation

Calf Island Foundation

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.

$10k
Granted FY2025still arriving
1
Grants FY2025still arriving
1
States reached
$10k
Largest
01What it fundsRead
02The needRead
03Its granteesRead
04Its fieldRead
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 2025.

Health$100kArts & Culture$79kEducation$73kEnvironment$41kHuman Services$16kInternational$16kReligion$8kHousing & Shelter$8kOther$0
02FY2025 · 1 grant

Where the money goes

Grants by size, and the largest recipients.

$10,000
Median grant
1
States reached
$172k
Total assets
Largest grants
RecipientAmount
ACADEMY FOR TEACHERS$10,000
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 (FY19–24, $18k) land where the poverty rate runs at 16%, against an area that typically sits at 11%. 80% of those dollars go to grantees based in above-average-need neighborhoods. Most of its grants land in higher-need ZIPs.

area typical 11%PORT CHESTER CARVER CENTER: $1k → 9%AT HOME IN GREENWICH: $3k → 9%FUND FOR THE AGED INC: $3k → 17%MARLENE MEYERSON JCC MANHATTAN: $2k → 17%WOMEN IN NEED: $5k → 17%THE NEW YORK WOMEN'S FOUNDATION: $5k → 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

ME
IL
NY
MA
PA
NJ
CT
RI
MD
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.
04

Where the work is directed

The same grants placed two ways: where each recipient sits, and where its stated purpose sends the money.

About 13% of Calf Island Foundation’s grant dollars are earmarked for a different county than the recipient’s own address.

Calf Island Foundationlessmore of its giving
Placed by recipient address · 15% directed abroad (not shown)
How this is measured
Recipient view: each grant at its grantee’s ZIP, mapped to a county. Directed view: each grant at the county its stated purpose names, falling back to the recipient’s county when the purpose names no place; US grants only. A county shows only if it carries the top 95% of that view’s dollars. Purposes are read from the funder’s own 990 grant descriptions.
03Its grantees
repeat funding

Who it funds again

Organizations funded in more than one year, against those funded once.

68%of every dollar goes to organizations it has funded before.
$228k · 14 repeat orgs$108k to everyone else

Grantees it renews have grown median revenue +41% since the first grant, against +8% for those funded once.

14 repeat relationships: 1 still active in FY2025, 13 since wound down.

How the two cohorts compare

Re-uppedFunded once

Organizations

14
38

Total granted

$228k
$108k

Median revenue growth · since first grant

+41%
+8%

Still filing today

93%
68%

New vs renewed · share of each year

In FY2025, 100% of grant dollars renewed an existing relationship; $0 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
EducationArts & CultureHealthHuman ServicesEnvironmentInternationalOther
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

  • GH
    GREENWICH HOSPITAL
    2× · 2019–2020 · $50k · revenue +40%
  • TA
    THE ACADEMY FOR TEACHERS INC
    4× · 2019–2025 · $40k · revenue +90%
  • TI
    THE IRISH GEORGIAN SOCIETY INC
    3× · 2019–2024 · $35k · revenue +41%

Funded once

  • GE
    GREENWICH EMERGENCY MEDICAL SERVICE INCgraduated
    one grant, 2020 · $6k · revenue +27%
  • HH
    HYDE HALL INC
    one grant, 2019 · $6k · revenue -8%
  • TG
    THE GREENWICH LIBRARYgraduated
    one grant, 2017 · $5k · revenue +47%
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
Manhattanville University

To educate students to be ethical and socially responsible leaders in a global community.

Education
2
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
3
American Museum of Natural History

The museum's mission statement is: "to discover, interpret, and disseminate - through scientific research and education - knowledge about human cultures, the natural world, and the universe."

Arts & Culture
4
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
5
Boston Architectural College

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

—
6
Governors Island Corporation

The governors island corporation, doing business as the trust for governors island, is the 501(c)(3) not-for-profit organization created by the city of new york and charged with the planning, redevelopment and ongoing operations of 150…

Animals
7
The Pierpont Morgan Library

The Morgan Library & Museum celebrates and shares the history and process of human creativity from antiquity to the present day through the preservation, study, and interpretation of a dynamic and growing collection.

Education
8
New York School of Interior Design

New york school of interior design provides the most innovative, immersive, and transformative interior design education in the world, demonstrating the impact of professionally designed interiors on the health, happiness, and well-being…

Education
9
The Brooklyn Institute of Arts and Sciences

The mission of the brooklyn institute of arts and sciences, d/b/a brooklyn museum (the "museum") is to bring people together through art and experiences that inspire celebration, compassion, courage, and the will to act. (see schedule o).

Arts & Culture
10
The Frick Collection

The Frick Collection (the "Collection") operates an internationally recognized art museum and library program for the inspiration and enjoyment of the public and for the advancement of the study of fine arts and kindred subjects.

—
11
Fordham University

Fordham university, the jesuit university of new york, is committed to the discovery of wisdom and the transmission of learning, through research and through education of the highest quality. for more information, see schedule o.

Education
12
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
How this is measured
The grantee most central to the portfolio’s shape is Rye Country Day School; the most unlike its peers is Metropolitan Museum of Art. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
05the grantee network

41 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. 41 of the 54 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)
4
Early backer (in before they grew)
41/41
Grantees still filing
24/41
Grew since first funded

Where the money sits, by cause and then by grantee

GREENWICH HOSPITAL: $50,000 · HealthGREENWICH HOSPITALSAIL TO PREVAIL: $13,000 · HealthSAIL TO PREVAILCANCER RESEARCH FUND OF THE DAMON RUNYON-WALTER WINCHELL FOUNDATION: $8,500 · HealthCANCER RESEARCH FUND OF T…+3 more: $7,000 · Health+3 moreNEW YORK HISTORICAL SOCIETY MUSEUM AND LIBRARY: $27,000 · OtherNEW YORK HISTORICAL SOCIETY…THE AMERICAN IRELAND FUND (DBA THE IRELAND FUNDS AMERICA/THE IRELAND FUNDS): $10,000 · OtherTHE AMERICAN IRELAND FUND (…GREENWICH EMERGENCY MEDICAL SERVICE INC: $6,000 · OtherGREENWICH EMERGENCY MEDICAL…MEMORIAL SLOAN KETTERING CANCER CENTER: $5,000 · OtherMEMORIAL SLOAN KETTERING CA…FRIENDS OF BYRAM SHUBERT LIBRARY: $5,000 · OtherFRIENDS OF BYRAM SHUBERT LI…NYU LANGONE MEDICAL CENTER: $5,000 · OtherNYU LANGONE MEDICAL CENTERPRESBYTERIAN CHURCH IN THE TOWN OF RYE: $5,000 · OtherPRESBYTERIAN CHURCH IN THE …+13 more: $23,000 · Other+13 moreTHE ACADEMY FOR TEACHERS INC: $39,900 · EducationTHE ACADEMY FOR TEACHER…THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK: $7,000 · EducationTHE TRUSTEES OF COLUMBI…THE GREENWICH LIBRARY: $5,000 · EducationTHE GREENWICH LIBRARYTHE ROCKEFELLER UNIVERSITY: $5,000 · EducationTHE ROCKEFELLER UNIVERS…BLAIR ACADEMY: $5,000 · EducationBLAIR ACADEMYPREP FOR PREP: $5,000 · EducationPREP FOR PREPEXODUS SCHOOL: $2,500 · Education+3 more: $3,500 · EducationTHE IRISH GEORGIAN SOCIETY INC: $35,101 · Arts & CultureTHE IRISH GEORGI…HYDE HALL INC: $5,500 · Arts & CultureHYDE HALL INCTHE JAY HERITAGE CENTER: $3,750 · Arts & CultureTHE JAY HERITAGE…New York Historical Society: $2,500 · Arts & CultureTHE BATTERY CONSERVANCY INC: $2,000 · Arts & CultureMETROPOLITAN MUSEUM OF ART: $2,000 · Arts & Culture+1 more: $1,500 · Arts & CultureNEW YORK BOTANICAL GARDEN: $20,000 · EnvironmentNEW YORK BOT…NATURAL AREAS CONSERVANCY INC: $9,500 · EnvironmentNATURAL AREA…Scenic Hudson Inc: $6,500 · EnvironmentScenic Hudso…FUND FOR PARK AVENUE NEW YORK INC: $3,500 · EnvironmentFUND FOR PAR…WOMEN IN NEED INC: $5,000 · Human ServicesNEW YORK WOMEN'S FOUNDATION INC: $5,000 · Human ServicesFUND FOR THE AGED INC: $2,500 · Human ServicesAT HOME IN GREENWICH INC: $2,500 · Human ServicesTHE JEWISH COMMUNITY CENTER IN MANHATTAN INC: $1,500 · Human ServicesPORT CHESTER CARVER CENTER INC: $1,000 · Human ServicesMEDECINS SANS FRONTIERES USA INC: $5,500 · International
Health$78,500Other$86,000Education$72,900Arts & Culture$52,351Environment$39,500Human Services$17,500International$5,500

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 budgetGREENWICH HOSPITAL: $50,000 over 2y, 0.0% of budgetTHE ACADEMY FOR TEACHERS INC: $39,900 over 4y, 1.5% of budgetTHE IRISH GEORGIAN SOCIETY INC: $35,101 over 3y, 3.1% of budgetNEW YORK BOTANICAL GARDEN: $20,000 over 3y, 0.0% of budgetSAIL TO PREVAIL: $13,000 over 4y, 0.6% of budgetTHE AMERICAN IRELAND FUND (DBA THE IRELAND FUNDS AMERICA/THE IRELAND FUNDS): $10,000 over 2y, 0.0% of budgetNATURAL AREAS CONSERVANCY INC: $9,500 over 4y, 0.2% of budgetCANCER RESEARCH FUND OF THE DAMON RUNYON-WALTER WINCHELL FOUNDATION: $8,500 over 3y, 0.0% of budgetTHE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK: $7,000 over 3y, 0.0% of budgetScenic Hudson Inc: $6,500 over 3y, 0.0% of budgetGREENWICH EMERGENCY MEDICAL SERVICE INC: $6,000 over 1y, 0.1% of budgetHYDE HALL INC: $5,500 over 1y, 0.7% of budgetMEDECINS SANS FRONTIERES USA INC: $5,500 over 2y, 0.0% of budgetTHE GREENWICH LIBRARY: $5,000 over 1y, 0.2% of budgetWOMEN IN NEED INC: $5,000 over 1y, 0.0% of budgetTHE ROCKEFELLER UNIVERSITY: $5,000 over 1y, 0.0% of budgetNEW YORK WOMEN'S FOUNDATION INC: $5,000 over 1y, 0.0% of budgetBLAIR ACADEMY: $5,000 over 1y, 0.0% of budgetPREP FOR PREP: $5,000 over 2y, 0.0% of budgetTHE JAY HERITAGE CENTER: $3,750 over 1y, 1.1% of budgetFUND FOR PARK AVENUE NEW YORK INC: $3,500 over 3y, 0.2% of budgetMARQUAND PARK FOUNDATION: $2,500 over 1y, 3.1% of budgetCENTRAL PARK CONSERVANCY INC: $2,500 over 1y, 0.0% of budgetNew York Historical Society: $2,500 over 1y, 0.0% of budgetBLYTHEDALE CHILDREN'S HOSPITAL: $2,500 over 1y, 0.0% of budgetABILIS INC: $2,500 over 1y, 0.0% of budgetFUND FOR THE AGED INC: $2,500 over 1y, 0.0% of budgetAT HOME IN GREENWICH INC: $2,500 over 1y, 0.6% of budgetEXODUS SCHOOL: $2,500 over 1y, 0.1% of budgetHousing Plus Solutions Inc: $2,500 over 1y, 0.0% of budgetFUND FOR WOMEN'S EQUALITY INC: $2,000 over 1y, 0.2% of budgetCHILDREN OF BELLEVUE INC: $2,000 over 2y, 0.1% of budgetTHE BATTERY CONSERVANCY INC: $2,000 over 1y, 0.0% of budgetMETROPOLITAN MUSEUM OF ART: $2,000 over 2y, 0.0% of budgetCAHOON MUSEUM OF AMERICAN ART INC: $1,500 over 1y, 0.1% of budgetWHITE PLAINS LIBRARY FOUNDATION INC: $1,500 over 1y, 0.6% of budgetTHE JEWISH COMMUNITY CENTER IN MANHATTAN INC: $1,500 over 1y, 0.0% of budgetPORT CHESTER CARVER CENTER INC: $1,000 over 1y, 0.0% of budgetTeachers College Columbia University: $1,000 over 1y, 0.0% of budgetRYE COUNTRY DAY SCHOOL: $1,000 over 1y, 0.0% of budgetSTROUD WATER RESEARCH CENTER: $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.

Jewish Communal FundThe Chicago Community…The Goldman Sachs Cha…Charina Foundation In…The New York Communit…The Bessemer Giving F…National Philanthropi…The Ayco Charitable F…Vanguard Charitable E…Morgan Stanley Global…Jpmorgan Chase Founda…The Bank of America C…
Jewish Communal FundNY16.7× affinity8 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Jewish Communal Fund · The Chicago Community Trust · The Goldman Sachs Charitable Gift Fund · Charina Foundation Inc Richard Menschel · The New York Community Trust · The Bessemer Giving Fund · National Philanthropic Trust · The Ayco Charitable Foundation · Vanguard Charitable Endowment Program · Morgan Stanley Global Impact Funding Trust Inc · Jpmorgan Chase Foundation · The Bank of America Charitable 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 Calf Island Foundation funds: left to right is the share of its income from government, bottom to top the share from Calf Island Foundation. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 30%0%1%3%5%funder's share of their income ↑0%23%45%68%90%share of the org’s income from government →median 0%
  • Abilis Inc: 74% of income from government
  • Cahoon Museum of American Art Inc: 0% of income from government
  • Greenwich Hospital: 0% of income from government
  • Blair Academy: 0% of income from government
no gov moneyreceives it· size = income
3get no government money at all
7report government grants on their 990 we could not trace to a source (not plotted)
1rely on government for over half their income
⤢ axis zoomed · 0–90%
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.

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 54 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 Calf Island’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