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Trowbridge Foundation at a glance

· Private foundation

Trowbridge 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.

$68k
Granted FY2025still arriving
1
Grants FY2025still arriving
1
States reached
$68k
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, FY2021 to 2025.

Housing & Shelter$146kRecreation & Sports$68kHealth$67kEnvironment$36kArts & Culture$22kInternational$20kCrime & Legal$15kHuman Services$8kOther$0
02FY2025 · 1 grant

Where the money goes

Grants by size, and the largest recipients.

$67,500
Median grant
1
States reached
$0
Total assets
Largest grants
RecipientAmount
Midcoast Recreation Center$67,500
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:

Its human-services grants (FY21–24, $159k) land where the poverty rate runs at 10%, against an area that typically sits at 9%. 97% of those dollars go to grantees based in above-average-need neighborhoods. Most of its grants land in higher-need ZIPs.

area typical 9%Parent Program of Mid-Coast Maine: $250 → 9%Parent Program Of Mid Coast Maine: $200 → 9%Olympia Snowe Women's Leadership Institute: $3k → 7%Olympia Snowe Women's Leadership Institute: $1k → 7%Olympia Snowe Women's Leadership Institute: $1k → 7%Knox County Homeless Coalition: $60k → 11%Knox County Homeless Coalition: $35k → 11%Knox County Homeless Coalition: $30k → 11%Knox County Homeless Coalition: $21k → 11%New Hope Midcoast: $5k → 11%New Hope Midcoast: $1k → 11%New Hope for Women Inc: $1k → 11%New Hope for Women Inc: $1k → 11%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.

87%of every dollar goes to organizations it has funded before.
$349k · 19 repeat orgs$53k to everyone else

Grantees it renews have grown median revenue +51% since the first grant, against +5% for those funded once.

19 repeat relationships: 1 still active in FY2025, 18 since wound down.

How the two cohorts compare

Re-uppedFunded once

Organizations

19
8

Total granted

$349k
$53k

Median revenue growth · since first grant

+51%
+5%

Still filing today

84%
88%

New vs renewed · share of each year

In FY2025, 100% of grant dollars renewed an existing relationship; $0 went to new ones.

50%100%’21’22’23’24’25
RenewedFirst-time

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

’21’22’23’24’25
HealthHuman ServicesArts & CultureYouth DevelopmentEnvironmentAnimalsOther
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

  • H
    Homeworthy
    4× · 2021–2024 · $146k · revenue +36%
  • MR
    MID-COAST RECREATION CENTER INC
    2× · 2022–2025 · $68k · revenue +138%
  • TH
    THE HURRICANE ISLAND FOUNDATION
    4× · 2021–2024 · $26k · revenue +17%

Funded once

  • H4
    Hope 4 Kids International
    one grant, 2022 · $20k
  • DS
    DOCUMENTARY SONGWRITERS
    one grant, 2024 · $10k · revenue +23%
  • HF
    HONORHEALTH FOUNDATIONgraduated
    one grant, 2023 · $10k · revenue +29%
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
Maine Media College

Maine Media Workshops & College educates and inspires visual artists and storytellers to achieve their creative potential. We provide lifelong learning opportunities for those pursuing the fine arts and media-related professions. We are…

—
2
MaineHealth

MaineHealth is a voluntary, not-for-profit community and referral system of hospitals, dedicated to providing high quality health care services to all persons who seek care regardless of their sex, race, religion, age, color, sexual…

Health
3
Penobscot Bay Medical Center

Penobscot Bay Medical Center (PBMC) is an acute care hospital that offers inpatient and outpatient care, diagnostic, therapeutic and rehabilitative services, patient and community education, and a full range of specialty services through…

—
4
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
5
Maine Behavioral Healthcare

Maine Behavioral Healthcare provides a seamless and compassionate continuum of care through a community of providers collaborating to promote recovery and the overall mental and physical well-being of those we are privileged to serve.

—
6
Midcoast Conservancy

The mission of Midcoast Conservancy is to protect vital lands and waters on a scale that matters and to inspire wonder and action on behalf of all species and the Earth.

Environment
7
Maine Center for Coastal Fisheries

Secure a sustainable future for fisheries and fishing communities in Eastern Maine and beyond.

Science & Tech
8
Islesboro Islands Trust

The mission of Islesboro Islands Trust is to enhance the quality of residents' lives through the preservation of open space, educate all residents as to the value of the island's natural ecosystems, and act as an environmental advocate on…

Philanthropy
9
Maine Community Foundation Inc

The Maine Community Foundation brings people and resources together to build a better Maine.

Philanthropy
10
Southern Maine Health Care

Southern Maine Health Care exists to improve the health and health care of the communities we serve.

—
11
Maine Island Trail Association

The mission of the Maine Island Trail Association is to advance a model of thoughtful use and volunteer stewardship of Maine's wild islands, creating an inspiring recreational water trail that is cared for by the people who use it.

Environment
12
Maine Maritime Museum

To connect people to the past, present, and future of Maine's waterways and their global reach.

Arts & Culture
How this is measured
The grantee most central to the portfolio’s shape is The Center for Grieving Children; the most unlike its peers is The Foundation for Aids Research. 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

23 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. 23 of the 27 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)
7
Early backer (in before they grew)
23/23
Grantees still filing
19/23
Grew since first funded

Where the money sits, by cause and then by grantee

Homeworthy: $145,686 · Human ServicesHomeworthyNEW HOPE FOR WOMEN INC: $8,000 · Human Services+2 more: $4,950 · Human ServicesMID-COAST RECREATION CENTER INC: $68,000 · OtherMID-COAST RECREATION CENTER I…Hope 4 Kids International: $20,000 · OtherHope 4 Kids InternationalGULF OF MAINE RESEARCH INSTITUTE: $5,000 · Other+7 more: $12,775 · Other+7 moreTHE FOUNDATION FOR AIDS RESEARCH: $25,000 · HealthTHE FOUNDATION FOR…BRING CHANGE 2 MIND: $20,000 · HealthBRING CHANGE 2 MIN…HONORHEALTH FOUNDATION: $10,000 · HealthHONORHEALTH FOUNDA…MaineHealth Services: $10,000 · HealthMaineHealth Servic…+1 more: $1,500 · HealthTHE HURRICANE ISLAND FOUNDATION: $26,000 · Youth Development+1 more: $500 · Youth DevelopmentDOCUMENTARY SONGWRITERS: $10,000 · Arts & CultureBAY CHAMBER CONCERTS INC: $6,050 · Arts & CultureThe Owls Head Transportation Museum: $4,000 · Arts & CultureFinding Our Voices: $15,000 · Crime & LegalCoastal Mountains Land Trust: $8,500 · EnvironmentNatural Resources Council of Maine Inc: $1,000 · Environment
Human Services$158,636Other$105,775Health$66,500Youth Development$26,500Arts & Culture$20,050Crime & Legal$15,000Environment$9,500

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 budgetHomeworthy: $145,686 over 4y, 1.1% of budgetMID-COAST RECREATION CENTER INC: $68,000 over 2y, 0.0% of budgetTHE HURRICANE ISLAND FOUNDATION: $26,000 over 4y, 0.5% of budgetTHE FOUNDATION FOR AIDS RESEARCH: $25,000 over 2y, 0.1% of budgetBRING CHANGE 2 MIND: $20,000 over 2y, 0.4% of budgetFinding Our Voices: $15,000 over 2y, 6.1% of budgetDOCUMENTARY SONGWRITERS: $10,000 over 1y, 12% of budgetHONORHEALTH FOUNDATION: $10,000 over 1y, 0.0% of budgetMaineHealth Services: $10,000 over 1y, 0.0% of budgetCoastal Mountains Land Trust: $8,500 over 4y, 0.1% of budgetNEW HOPE FOR WOMEN INC: $8,000 over 4y, 0.3% of budgetBAY CHAMBER CONCERTS INC: $6,050 over 4y, 0.2% of budgetGULF OF MAINE RESEARCH INSTITUTE: $5,000 over 3y, 0.0% of budgetOlympia Snowe Women's Leadership Institute: $4,500 over 3y, 0.2% of budgetThe Owls Head Transportation Museum: $4,000 over 4y, 0.0% of budgetOUT Maine: $2,000 over 4y, 0.1% of budgetMID-COAST HEALTH NET INC: $1,500 over 3y, 0.1% of budgetPAWS Animal Adoption Center: $1,500 over 4y, 0.1% of budgetGood Shepherd Food Bank: $1,000 over 1y, 0.0% of budgetNatural Resources Council of Maine Inc: $1,000 over 1y, 0.0% of budgetIsland Institute: $500 over 1y, 0.0% of budgetTHE CENTER FOR GRIEVING CHILDREN: $500 over 1y, 0.0% of budgetPARENT PROGRAM OF MID-COAST MAINE: $450 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.

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.

Maine Community Found…Fisher Charitable Fou…Reny Charitable Found…Bangor Savings Bank F…Arthur K Watson Trust…Otter Island Foundati…Middlecott FoundationOnion FoundationElmina B Sewall Found…Davis Family Foundati…Cara Charitable Found…Messler Family Founda…
Maine Community Foundation IncME28.6× affinity12 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Maine Community Foundation Inc · Fisher Charitable Foundation · Reny Charitable Foundation · Bangor Savings Bank Foundation · Arthur K Watson Trust Xxxxx5001 · Otter Island Foundation · Middlecott Foundation · Onion Foundation · Elmina B Sewall Foundation · Davis Family Foundation · Cara Charitable Foundation Inc · Messler Family 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 Trowbridge Foundation funds: left to right is the share of its income from government, bottom to top the share from Trowbridge Foundation. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 00%1%4%8%15%funder's share of their income ↑0%25%50%75%100%share of the org’s income from government →
    no gov moneyreceives it· size = income
    0get no government money at all
    5report government grants on their 990 we could not trace to a source (not plotted)
    0rely 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 Trowbridge Foundation?

    Find your warmest path to Trowbridge 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 27 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 Trowbridge’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