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Cromwell Harbor Supporting Foundation Inc at a glanceMostly funded, not a grantmaker: see who funds it →

· Community foundation

Cromwell Harbor Supporting Foundation Inc

To operate exclusively for educational, charitable and scientific purposes within the meaning of section 501(c)(3) of the internal revenue code as a section 509(a)(3) supporting organization of the boston foundation.

$1.4M
Granted FY2025still arriving
18
Grants FY2025still arriving
6
States reached
$420k
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, FY2022 to 2025.

Education$2.4MHealth$1.1MArts & Culture$456kPhilanthropy$355kEnvironment$115kYouth Development$50kInternational$30kReligion$10k
02FY2025 · 18 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2025

  • $10k–50k9 grants · $155k
  • $50k–250k8 grants · $852k
  • $250k+1 grant · $420k
$50,000
Median grant
6
States reached
$66M
Total assets
Largest grants
RecipientAmount
COLLEGE OF THE ATLANTIC$420,000
MASSACHUSETTS GENERAL HOSPITAL$200,000
VITAL CXNS INC$176,667
NORTH BENNET STREET SCHOOL$125,000
AUTHOR'S GUILD FOUNDATION$100,000
LAWRENCE CATHOLIC ACADEMY$100,000
OUTER COAST$50,000
PICKLES GROUP INC$50,000
JESUP MEMORIAL LIBRARY$50,000
MOUNT DESERT LAND AND GARDEN PRESERVE$25,000
WGBH EDUCATIONAL FOUNDATION$25,000
SOCIETY FOR THE PRESERVATION OF NEW ENGLAND ANTIQUITIES$25,000
CHILDREN'S TUMOR FOUNDATION$25,000
FRIENDS OF ACADIA$15,000
PRESIDENT AND FELLOWS OF HARVARD COLLEGE$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:

Dollar for dollar, its grants (FY22–25) land where the poverty rate runs at 13%, against an area that typically sits at 10%. 95% of its dollars go to grantees based in above-average-need neighborhoods. Most of its grants land in higher-need ZIPs.

area typical 10%PRESIDENT AND FELLOWS OF HARVARD COLLEGE: $50k → 8%LAWRENCE CATHOLIC ACADEMY: $100k → 10%AUTHOR'S GUILD FOUNDATION: $100k → 17%MIRACLEFEET: $10k → 13%KIDS ALIVE INTERNATIONAL: $10k → 13%OUTER COAST: $50k → 8%PICKLES GROUP INC: $50k → 14%HEALTHY ACADIA: $10k → 11%ST PAULS EPISCOPAL CHURCH: $10k → 15%THE GROTON SCHOOL: $25k → 8%VITAL CXNS INC: $177k → 16%AUTHOR'S GUILD FOUNDATION: $100k → 17%MIRACLEFEET: $10k → 13%KIDS ALIVE INTERNATIONAL: $10k → 13%HEALTHY ACADIA: $10k → 11%PRESIDENT AND FELLOWS OF HARVARD COLLEGE: $10k → 8%VITAL CXNS INC: $177k → 16%AUTHOR'S GUILD FOUNDATION: $50k → 17%KIDS ALIVE INTERNATIONAL: $10k → 13%COLLEGE OF THE ATLANTIC: $1.2M → 11%VITAL CXNS INC: $177k → 16%AUTHOR'S GUILD FOUNDATION: $50k → 17%COLLEGE OF THE ATLANTIC: $420k → 11%BOSTON FOUNDATION INC: $355k → 16%CHILDREN'S TUMOR FOUNDATION: $25k → 17%JESSUP MEMORIAL LIBRARY: $275k → 11%MASSACHUSETTS GENERAL HOSPITAL: $200k → 16%CHILDREN'S TUMOR FOUNDATION: $25k → 17%COLLEGE OF THE ATLANTIC: $75k → 11%MASSACHUSETTS GENERAL HOSPITAL: $100k → 16%JESUP MEMORIAL LIBRARY: $50k → 11%MASSACHUSETTS GENERAL HOSPITAL: $100k → 16%JESUP MEMORIAL LIBRARY: $25k → 11%SOCIETY FOR THE PRESERVATION OF NEW ENGLAND ANTIQUITIES: $25k → 16%FRIENDS OF ACADIA: $15k → 11%SOCIETY FOR THE PRESERVATION OF NEW ENGLAND ANTIQUITIES: $25k → 16%FRIENDS OF ACADIA: $15k → 11%SOCIETY FOR THE PRESERVATION OF NEW ENGLAND ANTIQUITIES: $25k → 16%NORTH BENNET STREET SCHOOL: $125k → 16%NORTH BENNET STREET SCHOOL: $25k → 16%MOUNT DESERT LAND AND GARDEN PRESERVE: $25k → 11%NORTH BENNET STREET SCHOOL: $25k → 16%MOUNT DESERT LAND AND GARDEN PRESERVE: $25k → 11%NORTH BENNET STREET SCHOOL: $25k → 16%MOUNT DESERT LAND AND GARDEN PRESERVE: $25k → 11%WGBH EDUCATIONAL FOUNDATION: $25k → 16%WGBH EDUCATIONAL FOUNDATION: $25k → 16%WGBH EDUCATIONAL FOUNDATION: $25k → 16%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.

94%of every dollar goes to organizations it has funded before.
$3.8M · 14 repeat orgs$251k to everyone else

Grantees it renews have grown median revenue +20% since the first grant, against +18% for those funded once.

14 repeat relationships: 12 still active in FY2025, 2 since wound down; 5 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

14
2

Total granted

$3.8M
$31k

Median revenue growth · since first grant

+20%
+18%

Still filing today

93%
100%

New vs renewed · share of each year

In FY2025, 84% of grant dollars renewed an existing relationship; $220k went to new ones.

50%100%’22’23’24’25
RenewedFirst-time

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

’22’23’24’25
HealthEducationArts & CultureEnvironmentInternationalYouth DevelopmentOther
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

  • COLLEGE OF THE ATLANTIC
    3× · 2022–2025 · $1.7M · revenue +20%
  • VC
    VITAL CXNS INC
    3× · 2023–2025 · $530k · revenue +38% · 28% of their budget
  • TA
    THE AUTHORS GUILD FOUNDATION INC
    4× · 2022–2025 · $300k · revenue +102%

Funded once

  • GROTON SCHOOL
    one grant, 2022 · $25k · revenue +8%
  • MUSEUM OF FINE ARTS
    one grant, 2024 · $6k · revenue +18%
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
Boston Architectural College

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

—
2
Trustees of Dartmouth College

Dartmouth College educates the most promising students and prepares them for a lifetime of learning and of responsible leadership, through a faculty dedicated to teaching and the creation of knowledge.

Education
3
President and Trustees of Bates College

Bates is a college of the liberal arts and sciences, and is a coeducational, nonsectarian, residential college with special commitments to academic rigor, and to assuring in all of its efforts the dignity of each individual, and access to…

Education
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
Marine Biological Laboratory

The Marine Biological Laboratory (MBL) is a world-renowned center for biological discovery and training that is notably affiliated with more than 60 Nobel Prize winners. Research is conducted by full-time faculty as well as hundreds of the…

Science & Tech
6
Northeast College of Health Sciences

Northeast college of health sciences (the college) is committed to academic excellence, leadership, and professional best practices in the health sciences.

Education
7
Massachusetts Institute of Technology

The mission of mit is to advance knowledge and educate students in science, technology, and other areas of scholarship that will best serve the nation and the world in the 21st century.

Education
8
MaineGeneral Health

To enhance, every day, the health of our patients, our families and our communities. We do that through a range of health care services for people of all ages, in a variety of care settings.

Health
9
Harvard Conservation Trust

To preserve the unique character and natural resources of harvard.

Environment
10
The President and Trustees of Colby College

to provide a rigorous and transformative liberal arts education that prepares students to become thoughtful, engaged citizens.

Education
11
Massachusetts Higher Education Assistance Corporation

The organization's primary exempt purpose is to provide access to and conduct activities in furtherance of higher education.

—
12
Trustees of Tufts College

Education and Research

Education
How this is measured
The grantee most central to the portfolio’s shape is Society for the Preservation of New Engl; the most unlike its peers is Wgbh Educational 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

20 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. 20 of the 23 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.

1
Load-bearing (≥25% of a budget)
2
Early backer (in before they grew)
20/20
Grantees still filing
13/20
Grew since first funded

Where the money sits, by cause and then by grantee

COLLEGE OF THE ATLANTIC: $1,671,000 · OtherCOLLEGE OF THE ATLANTICMASS GENERAL BRIGHAM INCORPORATED: $400,000 · OtherMASS GENERAL BRIGHAM INCORPORATEDTHE AUTHORS GUILD FOUNDATION INC: $300,000 · OtherTHE AUTHORS GUILD FOUNDATION INCLAWRENCE CATHOLIC ACADEMY OF LAWRENCE MASSACHUSETTS INC: $100,000 · Other+2 more: $85,000 · OtherJESUP MEMORIAL LIBRARY: $350,000 · EducationJESUP MEMORIAL LI…North Bennet Street School: $200,000 · EducationNorth Bennet Stre…President and Fellows of Harvard College: $60,000 · EducationPresident and Fel…OUTER COAST: $50,000 · EducationOUTER COASTGROTON SCHOOL: $25,000 · EducationVITAL CXNS INC: $530,001 · HealthVITAL CXNS INCCHILDREN'S TUMOR FOUNDATION: $60,000 · HealthCHILDREN'S TUMOR…+3 more: $50,000 · Health+3 moreBoston Foundation Inc: $355,000 · PhilanthropySOCIETY FOR THE PRESERVATION OF NEW ENGL: $75,000 · Arts & CultureWGBH Educational Foundation: $75,000 · Arts & CultureMUSEUM OF FINE ARTS: $6,000 · Arts & CulturePickles Group Inc: $50,000 · Youth DevelopmentFriends of Acadia: $40,000 · EnvironmentKids Alive International Inc: $30,000 · International
Other$2,556,000Education$685,000Health$640,001Philanthropy$355,000Arts & Culture$156,000Youth Development$50,000Environment$40,000International$30,000

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 budgetCOLLEGE OF THE ATLANTIC: $1,671,000 over 3y, 4.0% of budgetVITAL CXNS INC: $530,001 over 3y, 28% of budgetBoston Foundation Inc: $355,000 over 1y, 0.2% of budgetJESUP MEMORIAL LIBRARY: $350,000 over 3y, 14% of budgetTHE AUTHORS GUILD FOUNDATION INC: $300,000 over 4y, 3.9% of budgetNorth Bennet Street School: $200,000 over 4y, 1.3% of budgetSOCIETY FOR THE PRESERVATION OF NEW ENGL: $75,000 over 3y, 0.2% of budgetMount Desert Land and Garden Preserve: $75,000 over 3y, 0.5% of budgetWGBH Educational Foundation: $75,000 over 3y, 0.0% of budgetPresident and Fellows of Harvard College: $60,000 over 2y, 0.0% of budgetCHILDREN'S TUMOR FOUNDATION: $60,000 over 3y, 0.1% of budgetOUTER COAST: $50,000 over 1y, 2.9% of budgetFriends of Acadia: $40,000 over 3y, 0.1% of budgetKids Alive International Inc: $30,000 over 3y, 0.1% of budgetGROTON SCHOOL: $25,000 over 1y, 0.0% of budgetHEALTHY ACADIA: $20,000 over 2y, 0.2% of budgetMIRACLEFEET: $20,000 over 2y, 0.1% of budgetMOUNT DESERT ISLAND HOSPITAL: $10,000 over 1y, 0.0% of budgetMUSEUM OF FINE ARTS: $6,000 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.

Cromwell Harbor Found…Florence V Burden Fou…Maine Community Found…Vanguard Charitable E…National Philanthropi…Raymond James Charita…American Endowment Fo…Morgan Stanley Global…The Bank of America C…Donor Advised Charita…Fidelity Investments …Amazonsmile Foundation
Cromwell Harbor Foundation IncMA13.6× affinity4 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Cromwell Harbor Foundation Inc · Florence V Burden Foundation · Maine Community Foundation Inc · Vanguard Charitable Endowment Program · National Philanthropic Trust · Raymond James Charitable Endowment Fund · American Endowment Foundation · Morgan Stanley Global Impact Funding Trust Inc · The Bank of America Charitable 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 Cromwell Harbor Supporting Foundation Inc funds: left to right is the share of its income from government, bottom to top the share from Cromwell Harbor Supporting Foundation Inc. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 20%2%8%17%30%funder's share of their income ↑0%13%25%38%50%share of the org’s income from government →median 1%
  • President and Fellows of Harvard College: 7% of income from government
  • Society for the Preservation of New Engl: 2% of income from government
  • Wgbh Educational Foundation: 1% of income from government
  • Museum of Fine Arts: 0% of income from government
  • Boston Foundation Inc: 0% of income from government
no gov moneyreceives it· size = income
2get no government money at all
4report government grants on their 990 we could not trace to a source (not plotted)
0rely on government for over half their income
⤢ axis zoomed · 0–50%
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 Cromwell Harbor Supporting Foundation Inc?

Find your warmest path to Cromwell Harbor Supporting 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 23 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 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 Cromwell Harbor Supporting’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