· Private foundation
Windhover 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.
What it funded, over time
Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2024.
Where the money goes
Grants by size, and the largest recipients.
By grant size · FY2025
- Under $10k31 grants · $83k
- $10k–50k5 grants · $93k
| Recipient | Amount |
|---|---|
| ISLESBORO AFFORDABLE PROPERTY | $30,000 |
| Tomorrow's Education Network | $25,000 |
| Lesley University | $15,000 |
| THE POLG FOUNDATION | $12,500 |
| PLANNED PARENTHOOD OF GREATER NY | $10,000 |
| ISLESBORO ISLANDS TRUST | $7,000 |
| Islesboro Community Fund | $7,000 |
| HARVARD ART MUSEUM | $5,000 |
| CORNING MEALS ON WHEELS | $5,000 |
| One Love Community Fridge | $5,000 |
| Islesboro Community Center | $5,000 |
| Friends of Mount Auburn Cemetery | $5,000 |
| JOSLIN DIABETES CENTER | $5,000 |
| Trinity Boston Connects | $5,000 |
| Planned Parenthood of Los Angeles | $4,500 |
Does the money reach high-need areas?
Each grant placed by the hardship in its grantee’s ZIP, against the area’s typical level.
Its human-services grants (FY18–25, $2k) land where the poverty rate runs at 11%, against an area that typically sits at 11%. 50% of those dollars go to grantees based in above-average-need neighborhoods. Its grants spread fairly evenly across need levels.
How this is measured
How this is measured
Who it funds again
Organizations funded in more than one year, against those funded once.
Grantees it renews have grown median revenue +43% since the first grant, against +31% for those funded once.
37 repeat relationships: 25 still active in FY2025, 12 since wound down; 11 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, 90% of grant dollars renewed an existing relationship; $17k went to new ones.
Where new relationships form · theme of each grantee’s first grant
How this is measured
Backed again, and grew
- WSWILDWOOD SCHOOL INC4× · 2017–2020 · $105k · revenue +50%
- SHSHADY HILL SCHOOL3× · 2017–2019 · $75k · revenue +51%
- IIIslesboro Islands Trust7× · 2019–2025 · $74k · revenue +151%
Funded once
- IPISLESBORO PRESCHOOLone grant, 2018 · $25k
- TIThe Islesboro Pre-Schoolgraduatedone grant, 2020 · $15k · revenue +28%
- AFAMEDISYS FOUNDATIONone grant, 2023 · $5k · revenue -5%
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.
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.
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.
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…
Organization's mission: boston university is an international, comprehensive, private research university, committed to educating students to be reflective, resourceful individuals ready to live, adapt, and lead in an interconnected world.…
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…
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…
Ibis reproductive health drives change through bold, rigorous research and principled partnerships that advance sexual and reproductive autonomy, choices and health worldwide.
Ilsi is a global, nonprofit federation dedicated to generating and advancing emerging science and groundbreaking research to ensure foods are safe, nutritious and sustainable, and that they improve planetary and human health and well-being…
The new york botanical garden is a museum of plants and a scientific research center devoted to the study of plants and their uses. it is the garden's mission to improve public understanding of the natural world, horticulture, and the…
(see schedule o)
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…
Mass general brigham health plan's mission is to promote the health and wellness of our members, and to help ensure equitable, affordbale health care for the diverse communities we serve.
How this is measured
46 grantees tracked through their own filings, 2017–2025.
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 2025, not grant rows in a single year, so this will not match the grant count on the cover. 46 of the 58 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.
Where the money sits, by cause and then by grantee
Each grantee by its size and the funder’s share of it; top left is load-bearing
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 LESLEY UNIVERSITY ↗
- Who funds WILDWOOD SCHOOL INC ↗
- Who funds TOMORROW'S EDUCATION NETWORK INC ↗
- Who funds SHADY HILL SCHOOL ↗
- Who funds Islesboro Islands Trust ↗
- Who funds Islesboro Affordable Property ↗
- Who funds TRINITY BOSTON CONNECTS INC ↗
- Who funds JOSLIN DIABETES CENTER INC ↗
- Who funds Corning Meals on Wheels Inc ↗
- Who funds ISLESBORO COMMUNITY FUND ↗
- Who funds Islesboro Community Center ↗
- Who funds THE EPIPHANY SCHOOL INC ↗
- Who funds THE CORNING MUSEUM OF GLASS ↗
- Who funds PLANNED PARENTHOOD OF GREATER NEW YORK INC ↗
- Who funds PLANNED PARENTHOOD LOS ANGELES ↗
- Who funds CAREFIRST NY INC ↗
- Who funds MASSACHUSETTS HISTORICAL SOCIETY ↗
- Who funds The Finger Lakes Land Trust Inc ↗
- Who funds BARNARD COLLEGE ↗
- Who funds CITIZENS FOR JUVENILE JUSTICE INC ↗
- Who funds THE POLG FOUNDATION INC ↗
- Who funds The Islesboro Pre-School ↗
- Who funds The Beacon Project ↗
- Who funds Big Tree Boating Association ↗
- Who funds FRIENDS OF MOUNT AUBURN CEMETERY ↗
- Who funds LifeFlight Foundation ↗
- Who funds THE WORLD IS JUST A BOOK AWAY ↗
- Who funds AMEDISYS FOUNDATION ↗
- Who funds PLANNED PARENTHOOD OF THE SOUTHERN FINGER LAKES INC ↗
- Who funds REVOLUTIONARY SPACES INC ↗
- Who funds ISLESBORO AMBULANCE ASSOCIATION ↗
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.
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
How this is measured
How much its grantees rely on government
Each dot is one organization Windhover Foundation funds: left to right is the share of its income from government, bottom to top the share from Windhover Foundation. Bigger dots raise more.
- 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
How this is measured
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.
Play a game based on Windhover’s filings →