· Private foundation
Windhover Foundation
Its FY2024 filing reports that it funds preselected organizations and did not take unsolicited requests; check the foundation's own site before ruling it out.
What you funded, over time
Every grant placed by its stated purpose and the recipient’s mission, by year — across FY2017–2024.
Where the money goes
Your grants by size, and where they go.
By grant size · FY2024
- Under $10k25 grants · $89k
- $10k–50k3 grants · $65k
| Recipient | Amount |
|---|---|
| Tomorrow's Education Network | $25,000 |
| TOWN OF ISLESBORO | $25,000 |
| Lesley University | $15,000 |
| Islesboro Community Fund | $7,000 |
| ISLESBORO ISLANDS TRUST | $7,000 |
| Barnard College | $6,000 |
| FINGER LAKES LAND TRUST | $5,000 |
| PLANNED PARENTHOOD OF GREATER NY | $5,000 |
| Trinity Boston Connects | $5,000 |
| THE POLG FOUNDATION | $5,000 |
| ISLESBORO AFFORDABLE PROPERTY | $5,000 |
| CORNING MEALS ON WHEELS | $5,000 |
| Islesboro Community Center | $5,000 |
| HARVARD ART MUSEUM | $5,000 |
| JOSLIN DIABETES CENTER | $5,000 |
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 (FY18–18, $1k) land where the poverty rate runs at 14%, against an area that typically sits at 11%. 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 +42% since the first grant, against +31% for the ones you funded once.
35 repeat relationships — 26 still active in FY2024, 9 since wound down; 2 grantees were first funded in FY2024 (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 FY2024, 95% of grant dollars renewed an existing relationship; $8k 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
- WSWILDWOOD SCHOOL INC4× · 2017–2020 · $105k · revenue +50%
- SHSHADY HILL SCHOOL3× · 2017–2019 · $75k · revenue +51%
- IIIslesboro Islands Trust6× · 2019–2024 · $67k · revenue +151%
Funded once
- IPISLESBORO PRESCHOOLone grant, 2018 · $25k
- TIThe Islesboro Pre-Schoolone grant, 2020 · $15k · revenue -8%
- AFAMEDISYS FOUNDATIONone grant, 2023 · $5k · revenue -5%
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 bac is committed to provide excellence in design education grounded in practice and accessible to diverse communities.
The Marine Biological Laboratory (MBL) is a world-renowned center for biological discovery and training that is notably affiliated with more than 60 Nobel Prize winners. Research is conducted by full-time faculty as well as hundreds of the…
The mission of mit is to advance knowledge and educate students in science, technology, and other areas of scholarship that will best serve the nation and the world in the 21st century.
Research, education and general - princeton university is a private not-for-profit, non-sectarian institution of higher learning with approximately 5,700 undergraduate and 3,300 graduate students. 2,500 students graduated in the 2024-2025…
Bates is a college of the liberal arts and sciences, and is a coeducational, nonsectarian, residential college with special commitments to academic rigor, and to assuring in all of its efforts the dignity of each individual, and access to…
Dartmouth College educates the most promising students and prepares them for a lifetime of learning and of responsible leadership, through a faculty dedicated to teaching and the creation of knowledge.
Western new england university, a comprehensive private institution with a tradition of excellence in teaching and scholarship and a commitment to service, awards undergraduate, master's, and doctoral degrees in various departments from…
Northeast college of health sciences (the college) is committed to academic excellence, leadership, and professional best practices in the health sciences.
The mission of rhode island school of design, through its college and museum,is to educate its students and the public in the creation and (see schedule o)appreciation of works of art and design, to discover and transmit knowledge and to…
Whitehead institute forges new frontiers in science, uncovering insights today that unlock the potential of tomorrow. our advances in genetics and genomics are now enabling us to tackle the complexities of life with unprecedented depth and…
The international school of boston (isb) is an independent, non-profit, preschool-12 french-english bilingual and international school located in cambridge, massachusetts, in one of the most vibrant metropolitan areas in the united states.…
Williams College strives to achieve educational excellence by fostering a community of learning in collaboration with students, faculty, staff, devoted alumni and parents.
For reference, the grantee most central to the portfolio’s shape is The Epiphany School Inc and the most unlike its peers is The World Is Just a Book Away. 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 41 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.
37 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. 37 of the 47 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 LESLEY UNIVERSITY ↗
- Who funds WILDWOOD SCHOOL INC ↗
- Who funds SHADY HILL SCHOOL ↗
- Who funds TOMORROW'S EDUCATION NETWORK INC ↗
- Who funds Islesboro Islands Trust ↗
- Who funds TRINITY BOSTON CONNECTS INC ↗
- Who funds Corning Meals on Wheels Inc ↗
- Who funds Islesboro Affordable Property ↗
- Who funds JOSLIN DIABETES CENTER INC ↗
- Who funds Islesboro Community Center ↗
- Who funds ISLESBORO COMMUNITY FUND ↗
- Who funds THE CORNING MUSEUM OF GLASS ↗
- Who funds THE EPIPHANY SCHOOL INC ↗
- Who funds CAREFIRST NY INC ↗
- Who funds PLANNED PARENTHOOD LOS ANGELES ↗
- Who funds The Finger Lakes Land Trust Inc ↗
- Who funds MASSACHUSETTS HISTORICAL SOCIETY ↗
- Who funds BARNARD COLLEGE ↗
- Who funds PLANNED PARENTHOOD OF GREATER NEW YORK INC ↗
- Who funds CITIZENS FOR JUVENILE JUSTICE INC ↗
- Who funds The Islesboro Pre-School ↗
- Who funds The Beacon Project ↗
- Who funds Big Tree Boating Association ↗
- Who funds THE WORLD IS JUST A BOOK AWAY ↗
- Who funds LifeFlight Foundation ↗
- Who funds AMEDISYS FOUNDATION ↗
- Who funds PLANNED PARENTHOOD OF THE SOUTHERN FINGER LAKES INC ↗
- Who funds REVOLUTIONARY SPACES INC ↗
- Who funds THE POLG FOUNDATION INC ↗
- Who funds ISLESBORO AMBULANCE ASSOCIATION ↗
- Who funds President and Fellows of Harvard College ↗
- Who funds THE INSTITUTE OF CONTEMPORARY ART 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: Palace Head Foundation Inc · Clarence & Anne Dillon Dunwalke Trust · The Albright Foundation · Lois Chiles Foundation · The Jockey Hollow Foundation Inc · Pendleton Mazer Family Fund · Maine Community Foundation Inc · The Elizabeth Foundation · The Laboiteaux - Sharp Family Foundation · Robert & Maurine Rothschild Fund Inc · James M Collins Foundation · Caulkins Family 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 Windhover 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.
- Joslin Diabetes Center Inc — 35% of income from government
- Massachusetts Historical Society — 22% of income from government
- Revolutionary Spaces Inc — 20% of income from government
- President and Fellows of Harvard College — 7% of income from government
- Friends of Mount Auburn Cemetery — 1% of income from government
- The Institute of Contemporary Art Inc — 1% of income from government
- Lesley University — 1% of income from government
- The Epiphany School 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 Windhover Foundation?
Find your warmest path to Windhover 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.