· Private foundation
The Stephen & Suzanne Weiss Foundation I
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 $10k19 grants · $30k
- $10k–50k5 grants · $118k
- $50k–250k4 grants · $300k
| Recipient | Amount |
|---|---|
| Individual grant recipient | $150,000 |
| WEILL MEDICAL COLLEGE - DEAN HARRINGTON DISCRETIONARY FUNE | $50,000 |
| CORNELL UNIVERSITY - PRESIDENT MICAEL KOTLIKOFF DISCRETIONARY FUND | $50,000 |
| WEILL MEDICAL COLLEGE - CARDIOTHORACIC SURGEON LEONARD GIRARDI | $50,000 |
| NEW YORK PRESBYTERIAN FUND - PLATES FOR PEDIATRICS | $37,500 |
| HOSPITAL FOR SPECIAL SURGERY FOUNDATION | $25,000 |
| UJA FEDERATION | $20,000 |
| JEWISH COMMUNITY RELATIONS COUNCIL OF NEW YORK | $17,500 |
| BREAKTHROUGH T1D | $17,500 |
| JUPITER MEDICAL CENTER FOUNDATION | $5,000 |
| Individual grant recipient | $5,000 |
| DEERFIELD ACADEMY | $5,000 |
| AMERICAN CANCER SOCIETY | $3,000 |
| EDNA W RUNNER EDUCATION CENTER | $2,750 |
| HILLEL AT CORNELL | $2,000 |
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 (FY20–25, $6k) land where the poverty rate runs at 9%, against an area that typically sits at 10%. 0% 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.
24 repeat relationships — 18 still active in FY2025, 6 since wound down; 10 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, 48% of grant dollars renewed an existing relationship; $232k 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
Cornell University3× · 2020–2022 · $183k · revenue +46%- UJUNITED JEWISH APPEAL-FEDERATION OF JEWISH PHILANTHROPIES OF NEW YORK INC6× · 2020–2025 · $70k · revenue +46%
- ACADMIRALS COVE FOUNDATION INC2× · 2023–2024 · $27k · revenue +32%
Funded once
- JMJOYCE MEYER MINISTRIES INCone grant, 2022 · $1k
- CFCYSTIC FIBROSIS FOUNDATIONone grant, 2020 · $1k · revenue -56%
- GLGlobal Leadership Incone grant, 2021 · $1k · revenue -25%
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.
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…
Northeast college of health sciences (the college) is committed to academic excellence, leadership, and professional best practices in the health sciences.
Mjhs health system is a charitable not-for-profit established to support the activities of affiliated organizations. mjhs is built on the core values of compassion, dignity and respect, first established by the four brooklyn ladies in…
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.
Operating as isabella center for rehabilitation and nursing care, isabella is a 705-bed not-for-profit organization that is a member of the mjhs health system family. isabella is committed to providing exceptional short-term, sub-acute…
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 Pencils of Promise Incorporated and the most unlike its peers is Global Leadership Inc. 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 40 years old; the field is 18. You back the established end — and your money leans older still.
The field is 19% startups (under 5 years old) — 4% of your grantees by number, and just 1% of your money.
The orgs you fund almost never close — 0.0% lost their exemption, against 10% 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.
28 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. 28 of the 45 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 Cornell University ↗
- Who funds UNITED JEWISH APPEAL-FEDERATION OF JEWISH PHILANTHROPIES OF NEW YORK INC ↗
- Who funds ADMIRALS COVE FOUNDATION INC ↗
- Who funds PENCILS OF PROMISE INCORPORATED ↗
- Who funds TRUSTEES OF DEERFIELD ACADEMY ↗
- Who funds BREAKTHROUGH T1D ↗
- Who funds Jewish Community Relations Council of New York ↗
- Who funds NATIONAL HUMANITIES CENTER ↗
- Who funds SHATTERPROOF A NONPROFIT CORPORATION ↗
- Who funds GREENWICH CENTER FOR HOPE AND RENEWAL INC ↗
- Who funds Jupiter Medical Center Foundation Inc ↗
- Who funds Middle Patent Rural Cemetery Association Inc ↗
- Who funds STEVEN K AND WINIFRED A GRINSPOON HILLEL CENTER FOR JEWISH COMMUNITY ↗
- Who funds CORNELL HILLEL ↗
- Who funds The Rogosin Institute Inc ↗
- Who funds Christian Herald Association Inc ↗
- Who funds CYSTIC FIBROSIS FOUNDATION ↗
- Who funds DELTA DELTA DELTA FOUNDATION ↗
- Who funds Global Leadership Inc ↗
- Who funds ALZHEIMER'S DISEASE & RELATED DISORDERS ASSOCIATION INC ↗
- Who funds The Hospital for Special Surgery Fund Inc ↗
- Who funds BRIDGEPORT RESCUE MISSION INC ↗
- Who funds GREENWICH EMERGENCY MEDICAL SERVICE INC ↗
- Who funds GREENWICH COUNTRY DAY SCHOOL INC ↗
- Who funds LIFESPRING 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: Hilda & Preston Davis Foundation · The Ayco Charitable Foundation · National Philanthropic Trust · Vanguard Charitable Endowment Program · Jpmorgan Chase Foundation · Morgan Stanley Global Impact Funding Trust Inc · American Endowment Foundation · Natl Christian Charitable Fdn Inc · Donor Advised Charitable Giving Inc · Fidelity Investments Charitable Gift Fund · American Online Giving Foundation Inc · Amazonsmile 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 The Stephen & Suzanne Weiss Foundation I 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.
- Shatterproof a Nonprofit Corporation — 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 The Stephen & Suzanne Weiss Foundation I?
Find your warmest path to The Stephen & Suzanne Weiss Foundation I 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.