· Private foundation
The Summer Hill Foundation
Its FY2025 filing reports that it accepted unsolicited grant applications.
What you funded, over time
Every grant placed by its stated purpose and the recipient’s mission, by year — across FY2019–2025.
Where the money goes
Your grants by size, and where they go.
By grant size · FY2025
- $10k–50k1 grant · $15k
- $50k–250k8 grants · $661k
| Recipient | Amount |
|---|---|
| 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 |
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.
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.
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.
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.
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
Organizations
Total granted
Median revenue growth · since first grant
Still filing today
New vs renewed · share of each year
In FY2025, 100% of grant dollars renewed an existing relationship; $0 went to new ones.
Where new relationships form · theme of each grantee’s first grant
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
- RLRANGELEY LAKES HERITAGE TRUST INC6× · 2020–2025 · $840k · revenue +390%
THE TRUST FOR PUBLIC LAND5× · 2019–2025 · $640k · revenue +112%- STSAVE THE REDWOODS LEAGUE6× · 2019–2024 · $625k · revenue +130%
Funded once
- PIPATHFINDERS INCone grant, 2022 · $200k · revenue -69%
- WWWOODIE WHEATON LAND TRUSTone grant, 2020 · $100k · revenue -8%
- BHBLUE HILL HERITAGE TRUSTone 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.
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.
Conservation and preservation of land.
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…
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…
Protecting, enhancing and conserving open spaces encompassing meadows, woodlands, wetlands, and waterways in the town of wilton ct.
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.
The preservation of land and conservation of natural resources for public enjoyment and passive recreation.
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.
Preservation of natural resources in the town of haddam, connecticut.
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
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…
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…
Land conservation
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 field is 22% startups (under 5 years old) — 0% of your grantees by number, and just 0% of your money.
The orgs you fund almost never close — 0.0% lost their exemption, against 13% of the field you don’t fund.
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.
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 2017–2025, 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.
Where your money sits — by cause, then by grantee
Each org by its size and your share of it — top-left is where you’re load-bearing
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.
- Who funds RANGELEY LAKES HERITAGE TRUST INC ↗
- Who funds THE TRUST FOR PUBLIC LAND ↗
- Who funds SAVE THE REDWOODS LEAGUE ↗
- Who funds WYNDHAM LAND TRUST INC ↗
- Who funds MADISON LAND CONSERVATION TRUST ↗
- Who funds AVALONIA LAND CONSERVANCY INC ↗
- Who funds NEW ENGLAND FORESTRY FOUNDATION INC ↗
- Who funds NORTHEAST WILDERNESS TRUST CORPORATION ↗
- Who funds The Pacific Forest Trust Incorporated ↗
- Who funds PATHFINDERS INC ↗
- Who funds HUGUENOT HISTORICAL SOCIETY NEW PALTZ NY ↗
- Who funds DUDLEY FOUNDATION INC ↗
- Who funds WOODIE WHEATON LAND TRUST ↗
- Who funds BLUE HILL HERITAGE TRUST ↗
- Who funds MIDDLESEX LAND TRUST ↗
- Who funds MANCHESTER LAND CONSERVATION TRUST INC ↗
- Who funds MADISON HISTORICAL SOCIETY INC ↗
- Who funds GREATER LOVELL LAND TRUST INC ↗
- Who funds GROTON OPEN SPACE ASSOCIATION INC ↗
- Who funds THE ARCHAEOLOGICAL CONSERVANCY ↗
- Who funds DEACON JOHN GRAVE FOUNDATION INC ↗
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.
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.
- New England Forestry Foundation Inc — 88% of income from government
- Madison Land Conservation Trust — 68% of income from government
- Groton Open Space Association Inc — 50% of income from government
- Avalonia Land Conservancy Inc — 21% of income from government
- Northeast Wilderness Trust Corporation — 2% of income from government
- Wyndham Land Trust Inc — 1% of income from government
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.