· 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 it funded, over time
Every grant placed by its stated purpose and the recipient’s mission, by year, FY2020 to 2025.
Where the money goes
Grants by size, and the largest recipients.
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 |
| ST THOMAS MOORE | $14,910 |
| GREENWICH DEPT OF HUMAN SERVICES | $12,000 |
| SMILE TRAIN | $12,000 |
| WOUNDED WARRIOR PROJECT | $10,000 |
| ST JUDE'S CHILDRENS RESEARCH HOSP | $10,000 |
| SHRINERS CHILDRENS HOSPITAL | $10,000 |
| MERCY SHIPS | $10,000 |
| GEMS | $5,000 |
| NEIGHBOR TO NEIGHBOR | $5,000 |
| GREENWICH POINT CONSERVANCY | $5,000 |
| ALPHA 1 FOUNDATION | $5,000 |
| GREENWICH LAND TRUST | $5,000 |
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 (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 its grants land in higher-need ZIPs.
How this is measured
Which US states its grants reach
How this is measured
Who it funds again
Organizations funded in more than one year, against those funded once.
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
How this is measured
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%
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.
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…
How this is measured
22 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. 22 of the 46 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 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 ST JUDE CHILDREN'S RESEARCH HOSPITAL INC ↗
- Who funds Mercy Ships International ↗
- 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 ALPHA-1 FOUNDATION INC ↗
- Who funds THE GREENWICH LAND TRUST 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 ↗
- Who funds THE 52ND STREET PROJECT INC ↗
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: 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
How this is measured
How much its grantees rely on government
Each dot is one organization Weisenburger Foundation funds: left to right is the share of its income from government, bottom to top the share from Weisenburger Foundation. Bigger dots raise more.
- 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
How this is measured
Play a game based on Weisenburger’s filings →