· Private foundation
Weisenburger 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 FY2020–2025.
Where the money goes
Your grants by size, and where they go.
By grant size · FY2025
- Under $10k8 grants · $31k
- $10k–50k10 grants · $161k
| Recipient | Amount |
|---|---|
| BRIDGES | $47,317 |
| SUNRISE OF LIFE LTD | $20,000 |
| TUNNEL TO TOWERS | $15,000 |
| Individual grant recipient | $14,910 |
| SMILE TRAIN | $12,000 |
| GREENWICH DEPT OF HUMAN SERVICES | $12,000 |
| SHRINERS CHILDRENS HOSPITAL | $10,000 |
| ST JUDE'S CHILDRENS RESEARCH HOSP | $10,000 |
| MERCY SHIPS | $10,000 |
| WOUNDED WARRIOR PROJECT | $10,000 |
| GREENWICH POINT CONSERVANCY | $5,000 |
| ALPHA 1 FOUNDATION | $5,000 |
| NEIGHBOR TO NEIGHBOR | $5,000 |
| GREENWICH LAND TRUST | $5,000 |
| GEMS | $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 (FY23–25, $26k) 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.
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.
20 repeat relationships — 9 still active in FY2025, 11 since wound down; 9 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, 41% of grant dollars renewed an existing relationship; $113k 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
Elon University2× · 2022–2023 · $100k · revenue +18%- GDGREENWICH DEPARTMENT OF HUMAN SERVICES FUND INC5× · 2021–2025 · $42k · revenue +29%
STEPHEN SILLER TUNNEL TO TOWERS FOUNDATION3× · 2023–2025 · $28k · revenue +50%
Funded once
- KSKING SWINGSone grant, 2023 · $24k
- DADana's Angels Research Trustone grant, 2024 · $20k · revenue 0%
- TETHE EXPLORERS CLUBgraduatedone grant, 2024 · $17k · revenue +41%
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 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.
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.
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.
The University of New Haven is a student-centered comprehensive university with an emphasis on excellence in liberal arts and professional education. Our mission is to prepare our students to lead purposeful and fulfilling lives in a…
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.
To improve the world through research, scholarship, education, preservation, and practice.
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…
Under the medical service plan of the university of maryland school of medicine, medical services are rendered by the members of the faculty on behalf of the school of medicine in connection with their duties to provide clinical…
For reference, the grantee most central to the portfolio’s shape is Make-a-Wish Foundation of Connecticut Inc and the most unlike its peers is Greenwich Point Conservancy Inc. 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 33 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) — 5% of your grantees by number, and just 2% 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.
22 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. 22 of the 46 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 Elon University ↗
- Who funds GREENWICH DEPARTMENT OF HUMAN SERVICES FUND INC ↗
- Who funds STEPHEN SILLER TUNNEL TO TOWERS FOUNDATION ↗
- Who funds WOUNDED WARRIOR PROJECT INC ↗
- Who funds Dana's Angels Research Trust ↗
- Who funds SMILE TRAIN INC ↗
- Who funds THE EXPLORERS CLUB ↗
- Who funds Mercy Ships International ↗
- Who funds ST JUDE CHILDREN'S RESEARCH HOSPITAL INC ↗
- Who funds NEIGHBOR TO NEIGHBOR INC ↗
- Who funds NATIONAL FOREST FOUNDATION ↗
- Who funds BOYS & GIRLS CLUB OF STAMFORD INC ↗
- Who funds GREENWICH POINT CONSERVANCY INC ↗
- Who funds THE GREENWICH LAND TRUST INC ↗
- Who funds ALPHA-1 FOUNDATION INC ↗
- Who funds PACE UNIVERSITY ↗
- Who funds MAKE-A-WISH FOUNDATION OF CONNECTICUT INC ↗
- Who funds Gaylord Hospital INC ↗
- Who funds SILVER SHIELD ASSOCIATION 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: Malkin Fund Inc · The Bessemer Giving Fund · The Goldman Sachs Charitable Gift Fund · Jpmorgan Chase Foundation · The Pfizer Foundation Inc · Vanguard Charitable Endowment Program · National Philanthropic Trust · Morgan Stanley Global Impact Funding Trust Inc · The Bank of America Charitable Foundation Inc · American Online Giving Foundation Inc · Donor Advised Charitable Giving 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 Weisenburger 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.
- Boys & Girls Club of Stamford Inc — 17% of income from government
- Gaylord Hospital Inc — 6% of income from government
- The Stamford Hospital — 0% of income from government
- Wounded Warrior Project 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.