· Private foundation
Horizon Foundation Inc
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 FY2021–2025.
Where the money goes
Your grants by size, and where they go.
By grant size · FY2025
- Under $10k14 grants · $85k
- $10k–50k96 grants · $1.3M
| Recipient | Amount |
|---|---|
| ProsperityME | $20,000 |
| The Nature Conservancy | $20,000 |
| Higher Ground | $20,000 |
| Osterville Village Library | $20,000 |
| Portland Community Squash | $20,000 |
| Wood River Land Trust | $20,000 |
| Carver Foundation of Norwalk CT | $20,000 |
| House of Hope | $20,000 |
| 3S Artspace | $20,000 |
| Boys & Girls Club of Martin County Inc | $20,000 |
| The Ecology School | $20,000 |
| Banner Lake Club Inc | $20,000 |
| Rangeley Lakes Heritage Trust | $20,000 |
| Kieve Wavus Education | $20,000 |
| The Everglades Foundation | $20,000 |
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 (FY21–25, $551k) land where the poverty rate runs at 8%, against an area that typically sits at 9%. 48% of those dollars go to grantees based in above-average-need neighborhoods. Your grants spread fairly evenly across need levels.
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.
Which US states your grants reach
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 +20% since the first grant, against +8% for the ones you funded once.
141 repeat relationships — 73 still active in FY2025, 68 since wound down; 35 grantees were first funded in FY2025 (too recent to call).
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, 70% of grant dollars renewed an existing relationship; $396k 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
- TBTHE BANNER LAKE CLUB INC3× · 2021–2025 · $75k · revenue +25%
ALLIANCE TO PROTECT NANTUCKET SOUND INC3× · 2021–2025 · $63k · revenue +13%- BGBOYS & GIRLS CLUB OF MARTIN COUNTY3× · 2021–2025 · $60k · revenue +130%
Funded once
- TDTHE DUNBAR CENTER INCone grant, 2021 · $20k · revenue -88%
- FCFABIEN COUSTEAU OCEAN LEARNING CENTER I NCone grant, 2023 · $20k · revenue +90%
- NCNew Canaan Country Day Schoolone grant, 2023 · $20k
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.
The mission of the mount desert land & garden preserve is to conserve and share the beauty of our historic lands and gardens.
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…
Kennebunk Land Trust's mission is to permanently conserve and steward land to benefit natural and human communities.
Secure a sustainable future for fisheries and fishing communities in Eastern Maine and beyond.
The Piscataquog Land Conservancy is a nonprofit land conservation organization founded in 1970. Its purpose is to conserve the natural and scenic environment of the Piscataquog, Souhegan and Nashua River watershed communities of southern…
To conserve lands with significant ecological or cultural resources and manage them in a sustainable way for public benefit.
To connect people to the past, present, and future of Maine's waterways and their global reach.
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…
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…
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…
For reference, the grantee most central to the portfolio’s shape is Heritage Museums and Gardens Inc and the most unlike its peers is Tinworks Art. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
For each theme you fund, this compares how the sector’s money is shifting with how your own giving is shifting.
Sector change and giving change are each shown relative to their own range, growing (right) or shrinking (left); both normalized, so inflation isn’t mistaken for growth.
Your grantees are a median of 31 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) — 2% of your grantees by number, and just 1% of your money.
The orgs you fund almost never close — 0.8% 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.
250 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. 250 of the 293 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
Showing your 200 largest grantees by grant value.
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 THE NATURE CONSERVANCY ↗
- Who funds THE BANNER LAKE CLUB INC ↗
- Who funds ALLIANCE TO PROTECT NANTUCKET SOUND INC ↗
- Who funds OSTERVILLE FREE LIBRARY CORPORATION ↗
- Who funds BOYS & GIRLS CLUB OF MARTIN COUNTY ↗
- Who funds THE CARVER INC ↗
- Who funds Midcoast Conservancy ↗
- Who funds Bigelow Laboratory for Ocean Sciences ↗
- Who funds PROSPERITYME ↗
- Who funds PROJECT LIFT INC ↗
- Who funds HIGHER GROUND USA INC ↗
- Who funds Ecology Education Inc ↗
- Who funds NORWALKSTAMFORD GRASSROOTS TENNIS & EDUCATION INC ↗
- Who funds Portland Community Squash ↗
- Who funds THE CONSERVATION FUND A NONPROFIT CORPORATION ↗
- Who funds NORWALK LAND TRUST INC ↗
- Who funds MILL RIVER COLLABORATIVE INC ↗
- Who funds Maine Audubon Society ↗
- Who funds NEW ENGLAND FORESTRY FOUNDATION INC ↗
- Who funds Maine Farmland Trust ↗
- Who funds Locker Project ↗
- Who funds REGIONAL YOUNG MEN'S CHRISTIAN ASSOCIATION OF WESTERN CONNECTICUT INC ↗
- Who funds THREE BAYS PRESERVATION INC ↗
- Who funds Natural Resources Council of Maine Inc ↗
- Who funds My Place Teen Center Inc ↗
- Who funds MAINE ENVIRONMENTAL EDUCATION ASSOCIATION ↗
- Who funds STAMFORD PUBLIC EDUCATION FOUNDATION INC ↗
- Who funds Coastal Rivers Conservation Trust ↗
- Who funds DEFEND OUR HEALTH ↗
- Who funds NEW CANAAN MOUNTED TROOP INC ↗
- Who funds PORTLAND OVATIONS ↗
- Who funds BARNSTABLE LAND TRUST INC ↗
- Who funds Snake River Waterkeeper Inc ↗
- Who funds IDAHO BASE CAMP INC ↗
- Who funds Jobs for Maine's Graduates Inc ↗
- Who funds RANGELEY LAKES HERITAGE TRUST 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: Onion Foundation · Maine Community Foundation Inc · Sam L Cohen Foundation · Elmina B Sewall Foundation · Morton-Kelly Charitable Trust · Davis Family Foundation · Fisher Charitable Foundation · Davis Conservation Foundation · Stephen & Tabitha King Foundation Inc · Quimby Family Foundation · Leonard C & Mildred F Ferguson Foundation · Bangor Savings Bank Foundation
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 Horizon Foundation Inc 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.
- Mill River Collaborative Inc — 100% of income from government
- Association to Preserve Cape Cod Inc — 100% of income from government
- New England Forestry Foundation Inc — 88% of income from government
- Human Services Council Inc — 27% of income from government
- Stamford Public Education Foundation Inc — 22% of income from government
- Isles Inc — 21% of income from government
- Foodcorps Inc — 21% of income from government
- Family Centers Inc — 20% of income from government
- Three Bays Preservation Inc — 18% of income from government
- The Carver Inc — 16% of income from government
- Manomet Inc — 12% of income from government
- Love Live Local Inc — 9% of income from government
- Boys & Girls Club of Greenwich — 7% of income from government
- Patrons of the Trumbull Nature & Arts Center — 6% of income from government
- The Arts Foundation of Cape Cod — 6% of income from government
- Person to Person Inc — 5% of income from government
- Barnstable Land Trust Inc — 4% of income from government
- Intempo Organization Inc — 2% of income from government
- The Trustees of Reservations — 2% of income from government
- Girl Scouts of Connecticut Inc — 2% of income from government
- Boys & Girls Club of Martin County — 2% of income from government
- Appalachian Mountain Club — 1% of income from government
- Massachusetts Audubon Society Inc — 1% of income from government
- The Banner Lake Club Inc — 1% of income from government
- Plimoth Patuxet Museums Inc — 1% of income from government
- Stepping Stones Museum for Children Inc — 1% of income from government
- Silvermine Guild of Artists Inc — 1% of income from government
- Cotuit Center for the Arts Inc — 1% of income from government
- Rowayton Arts Center — 0% of income from government
- The Stamford Hospital — 0% of income from government
- New Canaan Mounted Troop Inc — 0% 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.
Warm introductions · Powered by PlinthPlus
How do I get to Horizon Foundation Inc?
Find your warmest path to Horizon 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.