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Plinth

· Private foundation

The Summer Hill Foundation

Its FY2025 filing reports that it accepted unsolicited grant applications.

$676k
Granted FY2025still arriving
9
Grants FY2025still arriving
4
States reached
$100k
Largest
01What you fund
0196% classified

What you funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year — across FY20192025.

Environment$5.0MArts & Culture$261kRecreation & Sports$225kFood & Nutrition$115kPhilanthropy$100kHousing & Shelter$50kEducation$30kOther$0
02FY2025 · 9 grants

Where the money goes

Your grants by size, and where they go.

By grant size · FY2025

  • $10k–50k1 grant · $15k
  • $50k–250k8 grants · $661k
$86,000
Median grant
4
States reached
$20M
Total assets
Largest grants
RecipientAmount
Rangeley Lakes Heritage Trust$100,000
Nature Conservancy of Connecticut$100,000
Trust for Public Land$100,000
The Wyndham Land Trust Inc$100,000
Historic Huguenot Street$86,000
Pacific Forest Trust$75,000
Individual grant recipient$50,000
Joshuas Trust$50,000
Madison Land Conservation Trust$15,000
02The need
03

Do your dollars go where the need is?

Each grant placed by the hardship in its grantee’s ZIP, then read against the area’s typical level.

show:

Your human-services grants (FY19–23, $115k) land where the poverty rate runs at 12%, against an area that typically sits at 9%. 100% of those dollars go to grantees based in above-average-need neighborhoods. Most of your grants land in higher-need ZIPs.

area typical 9%The Dudley Foundation: $50k → 12%The Dudley Foundation: $30k → 12%The Dudley Foundation: $25k → 12%The Dudley Foundation: $10k → 12%0%20%40%50%more need →
grant to an above-average-need area below average· circle size = grant amount

Matched: human-services grants are those whose grantee’s IRS cause code is Human Services. Placed by people below the poverty linein the grantee’s ZIP, averaged from the tracts in that ZIP; grantee ZIP can differ from where services are delivered.

US grants placed by each grantee’s ZIP, which can differ from where services are actually delivered. Need from public data — U.S. Census/ACS, CDC PLACES, Eviction Lab, USDA — shown as context about the area, never attributed to your giving.

03Your edge
repeat funding

Who you back again

Which organizations you funded more than once, and which you funded a single time. Each grantee is matched to its own filings.

85%of every dollar goes to organizations you’ve funded before.
$5.0M · 16 repeat orgs$898k to everyone else

And the relationships you keep tend to grow: grantees you re-up on have seen median revenue of +136% since the first grant, against -8% for the ones you funded once.

16 repeat relationships — 9 still active in FY2025, 7 since wound down.

How the two cohorts compare

Re-uppedFunded once

Organizations

16
13

Total granted

$5.0M
$898k

Median revenue growth · since first grant

+136%
-8%

Still filing today

81%
62%

New vs renewed · share of each year

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

50%100%’19’20’21’22’23’24’25
RenewedFirst-time

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

’19’20’21’22’23’24’25
EnvironmentArts & CultureHuman ServicesRecreation & SportsOther

First-time = a grantee’s first year in your filing window; renewed = funded in an earlier year too. As a portfolio matures the renewed share naturally climbs — once funded, an org stays “renewable” — so the signal is the years that buck it (a new-grantee intake wave). 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

  • RL
    RANGELEY LAKES HERITAGE TRUST INC
    6× · 2020–2025 · $840k · revenue +390%
  • THE TRUST FOR PUBLIC LAND
    5× · 2019–2025 · $640k · revenue +112%
  • ST
    SAVE THE REDWOODS LEAGUE
    6× · 2019–2024 · $625k · revenue +130%

Funded once

  • PI
    PATHFINDERS INC
    one grant, 2022 · $200k · revenue -69%
  • WW
    WOODIE WHEATON LAND TRUST
    one grant, 2020 · $100k · revenue -8%
  • BH
    BLUE HILL HERITAGE TRUST
    one grant, 2021 · $100k · revenue +14%

Repeat = funded in two or more distinct years; growth and survival are read from each grantee’s own subsequent IRS filings.

04Your field

The map has a center of gravity: the average direction from the rest of the sector toward the organizations the foundation funds — the shape of its giving. Scoring every nonprofit along that direction surfaces the ones that look most like the portfolio. These are the closest matchesthat aren’t grantees — a resemblance in what they say they do, not a recommendation.

1
Massachusetts Land Conservation Trust

Conservation and preservation of land.

Environment
2
Redding Land Trust Inc

The primary mission of Redding Land Trust is to preserve the natural resources of the Town of Redding, CT and to promote the scientific and educational study of local and natural resources, and to acquire, by gift or purchase, land or…

Environment
3
Land Conservancy of Ridgefield Inc

The Land Conservancy of Ridgefield, Inc. ("the Land Conservancy"), founded in 1967, preserves and protects, for the general benefit of the public, Ridgefield, Connecticut's natural resources including land and water resources, the plant…

Environment
4
Wilton Land Conservation Trust

Protecting, enhancing and conserving open spaces encompassing meadows, woodlands, wetlands, and waterways in the town of wilton ct.

Environment
5
Hilltown Land Trust Inc

Hilltown land trust conserves and stewards land through strong relationships to ensure clean water, wildlife habitat, climate resilience, recreational opportunities, and healthy farmland for the benefit of all.

Environment
6
Harford Land Trust Inc

The preservation of land and conservation of natural resources for public enjoyment and passive recreation.

Environment
7
Stamford Land Conservation Trust Inc

To obtain lands through donation or purchase and to protect and preserve them. While preserving we are improving the sustainable of wildlife, water tables and overall quality of our natural habitat.

Environment
8
Haddam Land Trust Inc

Preservation of natural resources in the town of haddam, connecticut.

Environment
9
Kestrel Land Trust Inc

Kestrel land trust inc. conserves and cares for forests, farms, and riverways in the connecticut river valley of western massachusetts, while nurturing an enduring love of the land

Environment
10
Royal River Conservation Trust

The royal river conservation trust (rrct) is a regional land trust working primarily in seven maine municipalities. the trust owns,cares for, and stewards land and conservation easements to protect land and water resources for the general…

Environment
11
Farmington Land Trust

The Farmington Land Trust Inc protects open space in the town of Farmington CT through the acquisition of open space, stewardship of acquired land, education of the public about the importance of open space and advocacy that ensures…

Environment
12
Brewster Conservation Trust

Land conservation

Environment

For reference, the grantee most central to the portfolio’s shape is Northeast Wilderness Trust Corporation and the most unlike its peers is Deacon John Grave Foundation Inc. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.

Your grantees are a median of 39 years old; the field is 16. You back the established end — and your money leans older still.

THE FIELDby orgYOUR GRANTEESby number22%0%<5yr14%0%5–10yr19%4%10–20yr16%39%20–35yr13%30%35–55yr16%26%55yr+
THE FIELDby orgYOUR MONEYby value22%0%<5yr14%0%5–10yr19%3%10–20yr16%36%20–35yr13%28%35–55yr16%33%55yr+

The field is 22% startups (under 5 years old) — 0% of your grantees by number, and just 0% of your money.

Closures · last 5 years

The orgs you fund almost never close 0.0% lost their exemption, against 13% of the field you don’t fund.

orgs you fund
0.0%0/23
the rest of the field
13%
240,396/1,819,542

Age = years since IRS exemption (a founding proxy). “Closed” = auto-revocation for 3 years of non-filing — a floor on closure, not proof, and bigger established orgs lapse least. Association, not causation.

04the grantee network

21 grantees tracked through their own filings, 2017–2025.

Each one resolved to its own IRS returns and tracked year by year — your grant beside their revenue from every source. Association, dated; never a causal claim.

Counted here: distinct organizations you funded across 20172025, not grant rows in a single year — so this will not match the grant count on the cover. 21 of the 29 grantees resolved in that span have returns of their own we could reconcile; the rest are funded organizations whose filings we could not track year by year.

4
Load-bearing (≥25% of a budget)
8
Early backer (in before they grew)
21/21
Grantees still filing
13/21
Grew since you first funded

Where your money sits — by cause, then by grantee

RANGELEY LAKES HERITAGE TRUST INC — $840,000 · EnvironmentRANGELEY LAKES HERITAGE TRUST INCTHE TRUST FOR PUBLIC LAND — $640,000 · EnvironmentTHE TRUST FOR PUBLIC LANDSAVE THE REDWOODS LEAGUE — $625,000 · EnvironmentSAVE THE REDWOODS LEAGUEWYNDHAM LAND TRUST INC — $450,000 · EnvironmentWYNDHAM LAND TRUST INCMADISON LAND CONSERVATION TRUST — $415,000 · EnvironmentMADISON LAND CONSERVATION TRUSTAVALONIA LAND CONSERVANCY INC — $276,750 · EnvironmentAVALONIA LAND CONSERVANCY INCNEW ENGLAND FORESTRY FOUNDATION INC — $250,000 · EnvironmentNEW ENGLAND FORESTRY FOUNDATION INCNORTHEAST WILDERNESS TRUST CORPORATION — $216,000 · Environment+5 more — $370,000 · Environment+5 moreNature Conservancy of Connecticut — $550,000 · OtherNature Conservancy of Co…The Pacific Forest Trust Incorporated — $200,000 · OtherThe Pacific Forest Trust…Individual grant recipient — $125,000 · OtherIndividual grant recipie…Joshuas Trust — $100,000 · OtherJoshuas TrustMANCHESTER LAND CONSERVATION TRUST INC — $100,000 · OtherMANCHESTER LAND CONSERVA…North Branford Land Trust — $93,000 · OtherNorth Branford Land Trus…Stanton-Davis Homestead — $50,000 · Other+4 more — $85,000 · Other+4 moreHUGUENOT HISTORICAL SOCIETY NEW PALTZ NY — $136,000 · Arts & CultureMADISON HISTORICAL SOCIETY INC — $80,200 · Arts & CultureDEACON JOHN GRAVE FOUNDATION INC — $14,500 · Arts & CulturePATHFINDERS INC — $200,000 · Recreation & SportsDUDLEY FOUNDATION INC — $115,000 · Human Services
Environment$4,082,750Other$1,303,000Arts & Culture$230,700Recreation & Sports$200,000Human Services$115,000

Each org by its size and your share of it — top-left is where you’re load-bearing

25%50%75%100%$100k$1.0M$10M$100Mgrantee revenue →↑ your share of their budgetRANGELEY LAKES HERITAGE TRUST INC — $840,000 over 6y, 6.5% of budgetTHE TRUST FOR PUBLIC LAND — $640,000 over 5y, 0.1% of budgetSAVE THE REDWOODS LEAGUE — $625,000 over 6y, 0.4% of budgetWYNDHAM LAND TRUST INC — $450,000 over 4y, 32% of budgetMADISON LAND CONSERVATION TRUST — $415,000 over 4y, 64% of budgetAVALONIA LAND CONSERVANCY INC — $276,750 over 5y, 6.8% of budgetNEW ENGLAND FORESTRY FOUNDATION INC — $250,000 over 2y, 3.4% of budgetNORTHEAST WILDERNESS TRUST CORPORATION — $216,000 over 4y, 0.5% of budgetThe Pacific Forest Trust Incorporated — $200,000 over 3y, 1.3% of budgetPATHFINDERS INC — $200,000 over 1y, 4.0% of budgetHUGUENOT HISTORICAL SOCIETY NEW PALTZ NY — $136,000 over 2y, 3.0% of budgetDUDLEY FOUNDATION INC — $115,000 over 4y, 34% of budgetWOODIE WHEATON LAND TRUST — $100,000 over 1y, 14% of budgetBLUE HILL HERITAGE TRUST — $100,000 over 1y, 5.4% of budgetMIDDLESEX LAND TRUST — $100,000 over 1y, 31% of budgetMANCHESTER LAND CONSERVATION TRUST INC — $100,000 over 1y, 16% of budgetMADISON HISTORICAL SOCIETY INC — $80,200 over 2y, 21% of budgetGREATER LOVELL LAND TRUST INC — $50,000 over 1y, 4.1% of budgetGROTON OPEN SPACE ASSOCIATION INC — $20,000 over 1y, 10% of budgetTHE ARCHAEOLOGICAL CONSERVANCY — $20,000 over 1y, 0.5% of budgetDEACON JOHN GRAVE FOUNDATION INC — $14,500 over 2y, 18% of budget
Go grantee by grantee — a decade per org, and how each moved after you funded them

A decade per grantee — revenue shaded, your grants as bars, all rows on one timeline.

The grantmakers whose grantees overlap with yours far more than size alone predicts. Each orbits closer the stronger the alignment; the arcs between them show where they also fund each other. Here it reads as a tightly interlocked camp — most of these funders back each other's grantees too.

Bafflin FoundationRI22.1× affinity8 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Bafflin Foundation · Fields Pond Foundation Inc · Maine Community Foundation Inc · Davis Conservation Foundation · Ibm International Foundation · The Pfizer Foundation Inc · Fidelity Foundation · Connecticut Land Conservation Council Inc · John Sage Foundation · Onion Foundation · Connecticut Humanities Council Inc · Hartford Foundation for Public Giving

Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. A research starting point: overlap is association, not proof of shared intent.

Government reliance of your grantees

Every dot is one organization The Summer Hill Foundation funds. Left–right is the share of its income from government; up–down is the share from you. Bigger dots raise more. Filter to federal, a single department, or state — and drag the year to watch it move.

2024
202122232425
no gov · 50%3%13%28%50%your share of their income ↑0%25%50%75%100%share of the org’s income from governmentmedian 50%
  • New England Forestry Foundation Inc88% of income from government
  • Madison Land Conservation Trust68% of income from government
  • Groton Open Space Association Inc50% of income from government
  • Avalonia Land Conservancy Inc21% of income from government
  • Northeast Wilderness Trust Corporation2% of income from government
  • Wyndham Land Trust Inc1% of income from government
no gov moneyreceives it· size = income
5get no government money at all
4report government grants on their 990 we could not trace to a source (not plotted)
3rely on government for over half their income
typical government reliance, FY2025

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 your grant caused the public funding. Coverage is precision-first — a floor, not 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 12–24 months.

On method. Every financial figure here is read directly from IRS e-file XML — your own 990/990-PF and the multi-year returns of the 29 grantees we resolved across every year we hold, several hundred filings in all (a different count from the grant rows on the cover, which are one fiscal year)— each linked to its source. Grantee achievements and outcomes are each organization’s own program-service reporting (Form 990, Part III); we read these as association with sustained funding — the foundation is one of several forces — suppress low-confidence name matches rather than guess, and say so where a figure rests on a single grant or filing. Not everything on this page is a filed figure, and the difference matters. Filed is what you reported on your 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. How we build these →

Generated from your IRS Form 990-PF e-file return for fiscal year 2025, released 2025. Filings run roughly 12–24 months behind; figures are dated accordingly.

Source object · view filing

More from the funding graph