· Private foundation
Winiarski Family 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.
| Recipient | Amount |
|---|---|
| ST JOHNS COLLEGE | $37,500,000 |
| SMITHSONIAN INSTITUTION | $3,121,614 |
| UC DAVIS FOUNDATION | $2,446,087 |
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 (FY17–24, $406k) land where the poverty rate runs at 9%, against an area that typically sits at 11%. 2% of those dollars go to grantees based in above-average-need neighborhoods. Your grants skew toward lower-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.
And the relationships you keep tend to grow: grantees you re-up on have seen median revenue of +66% since the first grant, against +27% for the ones you funded once.
55 repeat relationships — 3 still active in FY2025, 52 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
SMITHSONIAN INSTITUTION9× · 2017–2025 · $3.4M · revenue +34%- TUTHE UC DAVIS FOUNDATION6× · 2017–2025 · $2.8M · revenue +66%
University of Chicago6× · 2017–2022 · $390k · revenue +56%
Funded once
- TPTHE PATHWAY HOME INCone grant, 2017 · $100k · revenue -100%
INTERNATIONAL DOCUMENTARY FOUNDATION INCone grant, 2017 · $45k · revenue -21%- ANAmerican National Red Cross & Its Constituent Chapters and Branchesone grant, 2022 · $25k · revenue +23%
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.
California college of the arts educates students to shape culture and society through the practice and critical study of art, architecture, design, and writing. benefitting from its san francisco bay area location, the college prepares…
To improve the health and well-being of veterans and the general public by supporting a world-class biomedical research program conducted by ucsf faculty at the san francisco veterans affairs health care system.
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.
Our institutional mission is to educate and prepare students to be ethical leaders and socially responsible global citizens who incorporate the dominican values of study, reflection, community and service into their lives.
Our mission is to support the naval postgraduate school by providing funding and programmatic support for education, research, technology development, institutional initiatives, and community programs that advance national security and…
Marin academy asks every individual to think, question, and create in an environment of encouragement and compassion, and challenges each person to accept the responsibilities posed by education in a democratic society.
The npr foundation ("foundation") is organized and operated exclusively for the benefit of its sole supported organization, national public radio, inc. ("npr inc."). the foundation supports npr inc. through various activities such as…
The uc santa barbara foundation actively works to further the goals of the university of california, santa barbara. the foundation seeks to maintain and nurture the university's quality and distinction. on behalf of the campus, the…
To deliver accessible world-class student experiences by providing quality programs and services that ensure student success through meaningful learning. to be an inclusive and innovative university serving life-long learners who…
The AIA California, in collaboration with local components, is the voice of the architectural profession.
The california dental association is committed to the success of our members in service to their patients and the public.
The foundation's mission is to improve the oral health of all californians by supporting the dental profession and its efforts to meet community needs.
For reference, the grantee most central to the portfolio’s shape is The Napa Valley College Foundation and the most unlike its peers is Bayanihan Clinic. 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 43 years old; the field is 20. You back the established end — and your money leans older still.
The field is 19% 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 12% 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.
51 grantees tracked through their own filings, 2017–2026.
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 2017–2026, not grant rows in a single year — so this will not match the grant count on the cover. 51 of the 77 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 QUEEN OF THE VALLEY MEDICAL CENTER FOUNDATION ↗
- Who funds SMITHSONIAN INSTITUTION ↗
- Who funds THE UC DAVIS FOUNDATION ↗
- Who funds University of Chicago ↗
- Who funds OLE HEALTH ↗
- Who funds NAPA COUNTY LAND TRUST ↗
- Who funds SAVE NAPA VALLEY FOUNDATION ↗
- Who funds NEWS ↗
- Who funds THE CLAREMONT INSTITUTE FOR THE STUDY OF STATESMANSHIP & POLITICAL PHILOSOPHY ↗
- Who funds THE NAPA VALLEY COLLEGE FOUNDATION ↗
- Who funds COLORADO MESA UNIVERSITY FOUNDATION ↗
- Who funds ALDEA INC ↗
- Who funds TRINITY EDUCATION CENTER INC ↗
- Who funds NAPA VALLEY MUSEUM ↗
- Who funds HANDS ACROSS THE VALLEY INC GEORGE ALTAMURA SR ↗
- Who funds THE PATHWAY HOME INC ↗
- Who funds Cope Family Center ↗
- Who funds Pacific Research Institute For Public Policy ↗
- Who funds MANHATTAN INSTITUTE FOR POLICY RESEARCH INC ↗
- Who funds STATUE OF LIBERTY ELLIS ISLAND FOUNDATION INC ↗
- Who funds JUDICIAL WATCH INC ↗
- Who funds CHESAPEAKE BAY FOUNDATION INC ↗
- Who funds LANE TECH ALUMNI ASSOCIATION INC ↗
- Who funds NAPA VALLEY WINE LIBRARY ASSOCIATIO ↗
- Who funds DAMIAN MALDONADO MEMORIAL FOUNDATION INC ↗
- Who funds NAPA VALLEY CHILD ADVOCACY NETWORK INC ↗
- Who funds COMMUNITY ACTION OF NAPA VALLEY ↗
- Who funds INTERNATIONAL DOCUMENTARY FOUNDATION INC ↗
- Who funds IF GIVEN A CHANCE ↗
- Who funds ANIMAL REFUGE LEAGUE OF GREATER PORTLAND ↗
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: Community Foundation of the Napa Valley · Peter a & Vernice H Gasser Foundation · McNabb Foundation · Craig and Kathryn Hall Foundation · Napa Valley Vintners Healthy Community Fund · Syar Foundation Susan L Syar Director · Kaiser Foundation Hospitals · The Vollmer Family Foundation · Queen of the Valley Medical Center · Community Projects Inc · The David Butler Family Foundation · The Woods Charitable 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 Winiarski Family 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.
- Chesapeake Bay Foundation Inc — 2% 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 Winiarski Family Foundation?
Find your warmest path to Winiarski Family 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.