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· Private foundation

The Aldermere 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.

$434k
Granted FY2025still arriving
19
Grants FY2025still arriving
1
States reached
$304k
Largest
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.

Environment$2.9MScience & Tech$82kArts & Culture$68kHuman Services$63kEducation$47kYouth Development$33kFood & Nutrition$27kAnimals$20kOther$0
02FY2025 · 19 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2025

  • Under $10k12 grants · $63k
  • $10k–50k6 grants · $67k
  • $250k+1 grant · $304k
$7,000
Median grant
1
States reached
$4.8M
Total assets
Largest grants
RecipientAmount
MAINE COAST HERITAGE TRUST$304,448
COASTAL MOUNTAINS LAND TRUST$15,000
MAINE CONSERVATION ALLIANCE$12,000
MAINE FARMLAND TRUST$10,000
HURRICAINE ISLAND CENTER FOR SCIENCE AND LEADERSHIP$10,000
CENTER FOR ECOLOGICAL TEACHING AND LEARNING$10,000
NATURAL RESOURCES COUNCIL OF MAINE$10,000
MIDCOAST CONSERVANCY$8,000
MAINE CONSERVATION LAW FOUNDATION$8,000
PALAVER STRINGS$7,000
WAYFINDER SCHOOLS$6,000
FRIENDS OF CASCO BAY$5,000
GEORGES RIVER LAND TRUST$5,000
MERRYSPRING NATURE CENTER$5,000
CHEWONKI FOUNDATION$5,000
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 (FY17–25, $47k) land where the poverty rate runs at 11%, against an area that typically sits at 8%. 100% of those dollars go to grantees based in above-average-need neighborhoods. Most of its grants land in higher-need ZIPs.

area typical 8%WAYFINDER SCHOOLS: $6k → 11%WAYFINDER SCHOOLS: $5k → 11%WAYFINDER SCHOOLS: $5k → 11%WAYFINDERS SCHOOLS: $5k → 11%WAYFINDER SCHOOLS: $5k → 11%WAYFINDER SCHOOLS: $5k → 11%WAYFINDER SCHOOLS: $5k → 11%WAYFINDERS SCHOOLS: $5k → 11%WAYFINDERS SCHOOLS: $3k → 11%HOMEWORTHY: $3k → 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.

99%of every dollar goes to organizations it has funded before.
$3.2M · 25 repeat orgs$20k to everyone else

Grantees it renews have grown median revenue +44% since the first grant, against -19% for those funded once.

25 repeat relationships: 18 still active in FY2025, 7 since wound down; 1 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

25
3

Total granted

$3.2M
$17k

Median revenue growth · since first grant

+44%
-19%

Still filing today

60%
67%

New vs renewed · share of each year

In FY2025, 99% of grant dollars renewed an existing relationship; $3k 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
EnvironmentArts & CultureHuman ServicesScience & TechEducationYouth 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

  • Maine Coast Heritage Trust
    9× · 2017–2025 · $2.3M · revenue +106%
  • NR
    Natural Resources Council of Maine Inc
    9× · 2017–2025 · $173k · revenue +17%
  • CM
    Coastal Mountains Land Trust
    9× · 2017–2025 · $140k · revenue +44%

Funded once

  • CL
    CONSERVATION LAW FOUNDATION
    one grant, 2017 · $10k
  • MF
    MAINE FIBERARTS
    one grant, 2017 · $4k · revenue -19%
  • RL
    ROCKPORT LIBRARY FOUNDATION
    one grant, 2019 · $3k · revenue -87%
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
Wetlands Foundation
Environment
2
Protect Maine's Fishing Heritage Foundation
Environment
3
Boothbay Region Land Trust

To conserve for the public benefit natural habitat, scenic beauty, and working land of the Boothbay region of Maine by providing stewardship, public access, and environmental programs.

Environment
4
Chebeague & Cumberland Land Trust

Our mission is to permanently conserve and steward natural resources across our island and mainland communities for the benefit of current and future generations.

—
5
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
6
Frenchman Bay Conservancy

Frenchman Bay Conservancy protects and cares for our local lands and waters for the benefit of communities and nature.

Environment
7
Maine Rivers

Maine Rivers is a statewide advocacy organization. Our mission is to protect, restore and enhance the ecological health of Maine's river systems. We support and direct efforts to conserve and improve the health of Maine's rivers and…

Environment
8
Kennebunk Land Trust

Kennebunk Land Trust's mission is to permanently conserve and steward land to benefit natural and human communities.

Environment
9
Eastern Maine Conservation Initiative

The Eastern Maine Conservation Initiative (EMCI) is a non-profit organization with broad conservation interests that seeks to: 1) Foster environmentally sustainable communities of the eastern Maine coast; 2) Encourage an appreciation of…

Animals
10
Sebasticook Regional Land Trust

The mission of the SRLT is to recognize and conserve the rich wild and workinglandscape of Central Maine's Sebasticook River watershed through conservation,stewardship and education. Our focal programs are land conservation for…

Environment
11
Cape Elizabeth Land Trust

The Cape Elizabeth Land Trust permanently conserves and provides stewardship for lands and easements located in Cape Elizabeth, Maine

Environment
12
Momentum Conservation

To work collectively in maine to create mutually beneficial relationships with the earth, communities, and people through the conservation movement.

Environment
How this is measured
The grantee most central to the portfolio’s shape is Maine Farmland Trust; the most unlike its peers is Maine Boys to Men. 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

19 grantees tracked through their own filings, 2017–2026.

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 2026, not grant rows in a single year, so this will not match the grant count on the cover. 19 of the 29 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)
6
Early backer (in before they grew)
18/19
Grantees still filing
13/19
Grew since first funded

Where the money sits, by cause and then by grantee

Maine Coast Heritage Trust: $2,260,403 · EnvironmentMaine Coast Heritage TrustNatural Resources Council of Maine Inc: $173,000 · EnvironmentNatural Resources Council of Maine IncCoastal Mountains Land Trust: $140,000 · EnvironmentMidcoast Conservancy: $100,000 · Environment+5 more: $161,500 · Environment+5 morePENOBSCOT BAY YMCA AND TEEN CENTER: $42,500 · OtherPENOBSCOT…HURRICANE ISLAND CENTER FOR SCIENCE AND LEADERSHIP: $42,000 · OtherHURRICANE…HURRICAINE ISLAND CENTER FOR SCIENCE AND LEADERSHIP: $40,000 · OtherHURRICAIN…MAINE YOUTH ALLIANCE DBA THE GAME LOFT: $30,000 · OtherMAINE YOU…MAINE CONSERVATION LAW FOUNDATION: $27,000 · OtherMAINE CON…ART VAN PROGRAM: $21,000 · OtherART VAN P…BROADREACH FAMILY & COMMUNITY SERVICES: $20,000 · OtherBROADREAC…MERRYSPRING NATURE CENTER: $15,000 · OtherMERRYSPRI…CONSERVATION LAW FOUNDATION: $10,000 · OtherFRIENDS OF CASCO BAYKEEPER: $9,500 · Other+1 more: $4,000 · OtherWAYFINDER SCHOOLS: $44,000 · Human ServicesHomeworthy: $3,000 · Human ServicesPALAVER STRINGS INC: $30,000 · Arts & CultureBAY CHAMBER CONCERTS INC: $9,000 · Arts & CultureMAINE FIBERARTS: $4,000 · Arts & CultureMaine Farmland Trust: $27,000 · Food & NutritionLOBSTER CONSERVANCY: $20,000 · Science & TechMAINE BOYS TO MEN: $3,000 · Youth DevelopmentROCKPORT LIBRARY FOUNDATION: $3,000 · Education
Environment$2,834,903Other$261,000Human Services$47,000Arts & Culture$43,000Food & Nutrition$27,000Science & Tech$20,000Youth Development$3,000Education$3,000

Each grantee by its size and the funder’s share of it; top left is load-bearing

25%50%75%100%$100k$1.0M$10Mgrantee revenue →↑ funder's share of their budgetMaine Coast Heritage Trust: $2,260,403 over 9y, 2.1% of budgetNatural Resources Council of Maine Inc: $173,000 over 9y, 0.6% of budgetCoastal Mountains Land Trust: $140,000 over 9y, 1.1% of budgetMidcoast Conservancy: $100,000 over 8y, 1.3% of budgetMAINE CONSERVATION ALLIANCE: $60,000 over 9y, 7.6% of budgetChewonki Foundation Inc: $45,000 over 9y, 0.1% of budgetWAYFINDER SCHOOLS: $44,000 over 9y, 0.8% of budgetPALAVER STRINGS INC: $30,000 over 7y, 1.4% of budgetFRIENDS OF CASCO BAY: $27,000 over 6y, 0.5% of budgetMaine Farmland Trust: $27,000 over 3y, 0.2% of budgetCENTER FOR ECOLOGICAL TEACHING DBA CETL: $20,000 over 2y, 15% of budgetLOBSTER CONSERVANCY: $20,000 over 7y, 10% of budgetBROADREACH FAMILY & COMMUNITY SERVICES: $20,000 over 2y, 0.3% of budgetGeorges River Land Trust: $9,500 over 3y, 0.3% of budgetBAY CHAMBER CONCERTS INC: $9,000 over 9y, 0.1% of budgetMAINE FIBERARTS: $4,000 over 1y, 5.8% of budgetMAINE BOYS TO MEN: $3,000 over 3y, 0.3% of budgetROCKPORT LIBRARY FOUNDATION: $3,000 over 1y, 0.3% 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 Maine Coast Heritage Trust ↗
  • Who funds Natural Resources Council of Maine Inc ↗
  • Who funds Coastal Mountains Land Trust ↗
  • Who funds Midcoast Conservancy ↗
  • Who funds MAINE CONSERVATION ALLIANCE ↗
  • Who funds Chewonki Foundation Inc ↗
  • Who funds WAYFINDER SCHOOLS ↗
  • Who funds PALAVER STRINGS INC ↗
  • Who funds FRIENDS OF CASCO BAY ↗
  • Who funds Maine Farmland Trust ↗
  • Who funds CENTER FOR ECOLOGICAL TEACHING DBA CETL ↗
  • Who funds LOBSTER CONSERVANCY ↗
  • Who funds BROADREACH FAMILY & COMMUNITY SERVICES ↗
  • Who funds Georges River Land Trust ↗
  • Who funds BAY CHAMBER CONCERTS INC ↗
  • Who funds MAINE FIBERARTS ↗
  • Who funds MAINE BOYS TO MEN ↗
  • Who funds ROCKPORT LIBRARY FOUNDATION ↗
  • Who funds Homeworthy ↗

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 Foundation IncME32.5× affinity14 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Maine Community Foundation Inc · Onion Foundation · Elmina B Sewall Foundation · Tr Ua the Camden Foundation · Otter Island Foundation · Quimby Family Foundation · Davis Conservation Foundation · Fisher Charitable Foundation · Bangor Savings Bank Foundation · The Thorne Cox Family Foundation · Phineas W Sprague Memorial Foundation · John Sage 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 Aldermere Foundation funds: left to right is the share of its income from government, bottom to top the share from The Aldermere 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%19%38%56%75%share of the org’s income from government →
    no gov moneyreceives it· size = income
    0get no government money at all
    8report government grants on their 990 we could not trace to a source (not plotted)
    0rely on government for over half their income
    ⤢ axis zoomed · 0–75%
    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 Aldermere Foundation?

    Find your warmest path to The Aldermere 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 29 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

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