· Private foundation
The William & Sylvia Silberstein Foundation Inc
Its FY2024 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 clustered by its grantee’s IRS cause code (NTEE), by year — across FY2017–2024.
Where the money goes
Your grants by size, and where they go.
By grant size · FY2024
- Under $10k30 grants · $103k
- $10k–50k12 grants · $256k
- $50k–250k3 grants · $263k
| Recipient | Amount |
|---|---|
| CYSTIC FIBROSIS FOUNDATION | $113,000 |
| ASPCA | $100,000 |
| NYU MEDICAL CENTER | $50,000 |
| THE FOUNDATION TO COMBAT ANTISEMITISM | $37,000 |
| FRIENDS OF ISRAEL DEFENSE FORCES | $35,000 |
| AMERICAN HEART ASSOCIATION | $25,000 |
| KING LOW HEYWOOD THOMAS SCHOOL | $25,000 |
| RYE COUNTRY DAY SCHOOL | $25,000 |
| TEMPLE EMANU-EL | $20,000 |
| DARTMOUTH COLLEGE | $20,000 |
| AMERICAN RED CROSS | $20,000 |
| THE FOODBANK OF LOWER FAIRFIELD COUNTY | $15,000 |
| ANTI-DEFAMATION LEAGUE | $14,000 |
| THE 122 EAST 66TH ST FOUNDATION | $10,000 |
| NEW YORK CITY BALLET | $10,000 |
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 (FY17–24, $72k) land where the poverty rate runs at 12%, against an area that typically sits at 10%. 43% of those dollars go to grantees based in above-average-need neighborhoods. Your grants spread fairly evenly across need levels.
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 +33% since the first grant, against +4% for the ones you funded once.
83 repeat relationships — 40 still active in FY2024, 43 since wound down; 4 grantees were first funded in FY2024 (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 FY2024, 87% of grant dollars renewed an existing relationship; $80k 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
- CFCYSTIC FIBROSIS FOUNDATION7× · 2017–2024 · $902k · revenue +29%
- TATHE AMERICAN SOCIETY FOR THE PREVENTION OF CRUELTY TO ANIMALS8× · 2017–2024 · $900k · revenue +80%
- RCRYE COUNTRY DAY SCHOOL8× · 2017–2024 · $293k · revenue +26%
Funded once
- AJAMERICAN JEWISH CONGRESS INCone grant, 2022 · $24k · revenue -63%
UNITED STATES FUND FOR UNICEFone grant, 2022 · $20k · revenue -21%- TPTHE PARTNERSHIP TO END HOMELESSNESS INCone grant, 2018 · $10k · revenue -14%
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.
Nyu is a private university with approximately 60,000 matriculating students in 20 schools and institutes. nyu's primary missions are education, research and scholarship, and patient care.
Operate a state-of-the-art, world-class genomic research center that creates and uses advanced genomics to understand the genetic basis of disease. for more information, see schedule o.
Leadership in the prevention, treatment, and cure of cancer through excellence, vision and cost effectiveness in patient care, outreach programs, research, and education.
The children's hospital of philadelphia, the oldest hospital in the united states dedicated exclusively to pediatrics, strives to be the world leader in the advancement of health care for children by integrating excellent patient care,…
Education, research, medical services and other public services.
The graduate center foundation is committed to promoting and safe-guarding the success of the graduate center by raising funds and managing and investing donations for use by the graduate center. the board of trustees of the foundation…
To accelerate the development of breakthrough discoveries that will transform the lives of people living with food allergies.
Sanford burnham prebys medical discovery institute's mission is to advance the biomedical sciences by cultivating the next generation of scientific leaders, providing meaningful opportunities for researchers of all backgrounds to learn,…
Susan g. komen 's mission is to save lives by meeting the most critical needs in our communities & investing in breakthrough research to prevent & cure breast cancer.
Wwf's mission is to conserve nature and reduce the most pressing threats to the diversity of life on earth. (continued on schedule o)
The council on foreign relations (cfr) is an independent, nonpartisan membership organization, think tank, and publisher dedicated to being a resource for its members, government officials, business executives, journalists, educators and…
Chartered by a unanimous act of congress, the museum is america's national institution for the documentation, study, interpretation, and education of holocaust history and serves as our country's memorial to the victims of the holocaust.…
For reference, the grantee most central to the portfolio’s shape is The Partnership to End Homelessness Inc and the most unlike its peers is Foundation to Combat Anti-Semitism 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 43 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) — 0% of your grantees by number, and just 0% of your money.
The orgs you fund almost never close — 1% 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.
86 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. 86 of the 140 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 CYSTIC FIBROSIS FOUNDATION ↗
- Who funds THE AMERICAN SOCIETY FOR THE PREVENTION OF CRUELTY TO ANIMALS ↗
- Who funds RYE COUNTRY DAY SCHOOL ↗
- Who funds MONTEFIORE MEDICAL CENTER ↗
- Who funds ANTI-DEFAMATION LEAGUE ↗
- Who funds KING SCHOOL INC ↗
- Who funds American Heart Association Inc ↗
- Who funds THE FOOD BANK OF LOWER FAIRFIELD COUNTY INC ↗
- Who funds KIDS IN CRISIS INC ↗
- Who funds SOUNDWATERS INC ↗
- Who funds NEW YORK CITY BALLET INC ↗
- Who funds SHARE OUR STRENGTH ↗
- Who funds ST JUDE CHILDREN'S RESEARCH HOSPITAL INC ↗
- Who funds Trustees of Dartmouth College ↗
- Who funds New York Historical Society ↗
- Who funds FOUNDATION TO COMBAT ANTI-SEMITISM INC ↗
- Who funds FRIENDS OF THE ISRAEL DEFENSE FORCES ↗
- Who funds CHILD GUIDANCE CENTER OF SOUTHERN CONNECTICUT INC ↗
- Who funds PORT CHESTER CARVER CENTER INC ↗
- Who funds CITY HARVEST INC ↗
- Who funds AMERICAN JEWISH CONGRESS INC ↗
- Who funds THE SAMBURU PROJECT INC ↗
- Who funds FAMILY SERVICES OF WESTCHESTER 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: The New York Community Trust · Jewish Communal Fund · Select Equity Group Foundation · Synchrony Foundation · The Goldman Sachs Charitable Gift Fund · American Express Foundation · Jpmorgan Chase Foundation · Mbia Foundation · Pcsb Community Foundation · Peoples United Community Foundation · The Bessemer Giving Fund · Mother Cabrini Health Foundation Inc
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 William & Sylvia Silberstein Foundation Inc 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.
- Kids in Crisis Inc — 49% of income from government
- Save the Sound — 37% of income from government
- Save the Children Federation Inc — 30% of income from government
- Boys & Girls Club of Stamford Inc — 17% of income from government
- Domestic Violence Crisis Center — 10% of income from government
- Soundwaters Inc — 4% 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 William & Sylvia Silberstein Foundation Inc?
Find your warmest path to The William & Sylvia Silberstein Foundation Inc 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.