· Private foundation
Windsor 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 you funded, over time
Every grant placed by its stated purpose and the recipient’s mission, by year — across FY2017–2025.
Where the money goes
Your grants by size, and where they go.
By grant size · FY2025
- Under $10k11 grants · $17k
- $10k–50k3 grants · $60k
| Recipient | Amount |
|---|---|
| HOOVER INSTITUTION ON WAR REVOLUTION AND PEACE | $25,000 |
| THE DA VINCI SCHOOL | $25,000 |
| SPIRIT OF AMERICA | $10,000 |
| SPECIAL OPERATIONS WARRIOR FOUNDATION | $3,000 |
| STANFORD UNIVERSITY GRADUATE SCHOOL OF BUSINESS | $2,500 |
| BELMONT UNIVERSITY | $2,500 |
| AMERICAN ENTERPRISE INSTITUTE | $2,000 |
| STANFORD UNIVERSITY | $2,000 |
| UNIVERSITY OF AUSTIN | $1,000 |
| CHILDREN'S MEDICAL CENTER FOUNDATION | $1,000 |
| UT SOUTHWESTERN MEDICAL CENTER | $1,000 |
| BAYLOR SCOTT & WHITE DALLAS FOUNDATION | $1,000 |
| DALLAS ZOO | $500 |
| PEROT MUSEUM OF NATURE AND SCIENCE | $500 |
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 (FY18–24, $6k) land where the poverty rate runs at 15%, against an area that typically sits at 10%. 91% 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.
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.
23 repeat relationships — 12 still active in FY2025, 11 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
- SOSpirit of America Worldwide7× · 2019–2025 · $66k · revenue +245%
- AEAMERICAN ENTERPRISE INSTITUTE FOR PUBLIC POLICY RESEARCH9× · 2017–2025 · $18k · revenue +0%
- SOSPECIAL OPERATIONS WARRIOR FOUNDATION9× · 2017–2025 · $12k · revenue +265%
Funded once
- USUPUMC-WEEKDAY SCHOOLone grant, 2022 · $1k
- TWThe Weekday School at UPUMCone grant, 2023 · $1k
- MSMENLO SCHOOLgraduatedone grant, 2017 · $500 · revenue +90%
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.
Provide an independent forum for those who dare to read, think, speak, and write to advance the professional, literary, and scientific understanding of sea power and other issues critical to global security.
The primary mission of furman as a liberal arts institution is to provide a distinctive education in fine arts, humanities, social sciences, mathematics and the sciences, as well as selected professional disciplines.
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.
Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.
Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.
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…
See Disclosure Above.
The bac is committed to provide excellence in design education grounded in practice and accessible to diverse communities.
Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.
The fsmb serves as the voice for state medical boards, supporting them through education, assessment, research and advocacy while providing services and initiatives that promote patient safety, quality health care and regulatory best…
Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.
Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.
For reference, the grantee most central to the portfolio’s shape is Green Beret Foundation and the most unlike its peers is Baylor Health Care System Foundation. 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 14. You back the established end — and your money leans older still.
The field is 24% 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 14% 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.
20 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. 20 of the 30 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 Spirit of America Worldwide ↗
- Who funds THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY ↗
- Who funds TEXAS FOUNDATION FOR EDUCATIONAL ADVANCEMENT INC dba THE DA VINCI SCHOOL ↗
- Who funds AMERICAN ENTERPRISE INSTITUTE FOR PUBLIC POLICY RESEARCH ↗
- Who funds SPECIAL OPERATIONS WARRIOR FOUNDATION ↗
- Who funds Belmont University ↗
- Who funds GREEN BERET FOUNDATION ↗
- Who funds Baylor Health Care System Foundation ↗
- Who funds Baylor Scott & White Health ↗
- Who funds PEROT MUSEUM OF NATURE & SCIENCE ↗
- Who funds TEAM RUBICON INC ↗
- Who funds THE GEORGE W BUSH FOUNDATION ↗
- Who funds DALLAS ARBORETUM AND BOTANICAL SOCIETY INC ↗
- Who funds STANFORD HEALTH CARE ↗
- Who funds CHILDREN'S MEDICAL CENTER FOUNDATION ↗
- Who funds BOYS & GIRLS CLUBS OF AMERICA ↗
- Who funds MANHATTAN INSTITUTE FOR POLICY RESEARCH INC ↗
- Who funds NRA FOUNDATION INC ↗
- Who funds MENLO SCHOOL ↗
- Who funds THE PHILLIPS BROOKS SCHOOL ↗
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: Morgan Stanley Global Impact Funding Trust Inc · American Online Giving Foundation Inc · Fidelity Investments Charitable Gift Fund
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 Windsor 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 or a single department — and drag the year to watch it move.
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 Windsor Foundation?
Find your warmest path to Windsor 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.