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Massachusetts · 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 FY2025(still arriving)
18
Grants FY2025
15
Organizations funded FY2024
7%
First-time grantees FY2024
Read the full brief
Median grant, FY2025
$50,000
Largest grant, FY2025
$420,000
Organizations funded a year
7 to 15
FY2022 to FY2024
States reached, FY2025
6
Total assets, FY2025
$66M

How open it is to new grantees

In FY2024, 7% of the organizations Cromwell Harbor Supporting Foundation Inc funded were first-time grantees, receiving 0% of its grant dollars.

New vs renewed · share of each year

In FY2024, 100% of grant dollars renewed an existing relationship; $6k went to new ones.

50%100%’23’24
RenewedFirst-time

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

’23’24
HealthArts & CultureInternationalOther
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
FY2025still arriving17$1.4M29%
FY202415$2.0M7%
FY202310$367k80%
FY20227$310kn/a
100% 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

Top grantees

Largest recipients by total granted, FY2022 to FY2025, and the share of each one’s budget the grants supplied at peak.

GranteeTotal grantedYearsShare of their budget
College of the Atlantic$1,671,00034%
Vital Cxns Inc$530,001328%
Mass General Brigham Incorporated$400,0003n/a
Jesup Memorial Library$350,000314%
The Authors Guild Foundation Inc$300,00044%
North Bennet Street School$200,00041%
Lawrence Catholic Academy of Lawrence Massachusetts Inc$100,0001n/a
Society for the Preservation of New Engl$75,00030%
Mount Desert Land and Garden Preserve$75,00030%
WGBH Educational Foundation$75,00030%
Show all 21 grantees
All grantees of Cromwell Harbor Supporting Foundation Inc by total granted
GranteeTotal grantedYearsShare of their budget
College of the Atlantic$1,671,00034%
Vital Cxns Inc$530,001328%
Mass General Brigham Incorporated$400,0003n/a
Jesup Memorial Library$350,000314%
The Authors Guild Foundation Inc$300,00044%
North Bennet Street School$200,00041%
Lawrence Catholic Academy of Lawrence Massachusetts Inc$100,0001n/a
Society for the Preservation of New Engl$75,00030%
Mount Desert Land and Garden Preserve$75,00030%
WGBH Educational Foundation$75,00030%
Children's Tumor Foundation$60,00030%
Outer Coast$50,00013%
Pickles Group Inc$50,0001n/a
Friends of Acadia$40,00030%
Kids Alive International Inc$30,00030%
Groton School$25,00010%
Healthy Acadia$20,00020%
Miraclefeet$20,00020%
Mount Desert Island Hospital$10,00010%
St Pauls Episcopal Church$10,0001n/a
Museum of Fine Arts$6,00010%

What it could do for these grantees

Where it is load-bearing

Cromwell Harbor Supporting Foundation Inc supplied at least a quarter of the budget for 1 of its grantees at some point. The chart plots its 17 largest grantees; load-bearing ones sit top left.

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 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 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

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 17.

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 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.

Compare Cromwell Harbor Supporting Foundation Inc with peer funders

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.

About Cromwell Harbor Supporting Foundation Inc

How much does Cromwell Harbor Supporting Foundation Inc give?
Cromwell Harbor Supporting Foundation Inc reported 18 grants totaling $1,444,417 in its FY2025 IRS filing. It funded between 7 and 15 organizations a year over FY2022 to FY2024.
What does Cromwell Harbor Supporting Foundation Inc fund?
By grant dollars over FY2022 to FY2025, its largest causes are Education (53%), Health (24%), Arts & Culture (10%).
Who are Cromwell Harbor Supporting Foundation Inc's largest grantees?
By total granted over FY2022 to FY2025: College of the Atlantic ($1.7M), Vital Cxns Inc ($530k), Mass General Brigham Incorporated ($400k).
Does Cromwell Harbor Supporting Foundation Inc fund new organizations?
In FY2024, 7% of the organizations it funded were first-time grantees.
Which funders back the same organizations as Cromwell Harbor Supporting Foundation Inc?
Its strongest co-funders, measured against what their size predicts, include Cromwell Harbor Foundation Inc, Florence V Burden Foundation, Maine Community Foundation Inc.
Where is Cromwell Harbor Supporting Foundation Inc based?
Cromwell Harbor Supporting Foundation Inc is based in MA.

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

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