· Private foundation
Joseph & Sylvia Slifka Foundation Inc
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.
By grant size · FY2025
- Under $10k1 grant · $1k
- $10k–50k6 grants · $78k
- $50k–250k4 grants · $250k
- $250k+6 grants · $3.3M
| Recipient | Amount |
|---|---|
| THE INTERFAITH CENTER OF NEW YORK | $650,000 |
| PUBLICOLOR INC | $600,000 |
| ANIMAL RESCUE FUND OF THE HAMPTONS INC | $530,000 |
| BRIDGEHAMPTON CHILD CARE & RECREATIONAL CENTER | $502,500 |
| NEW YORK CITY BALLET INC | $500,000 |
| SOLOMON R GUGGENHEIM FOUNDATION | $500,000 |
| THE MUSEUM OF FINE ARTS HOUSTON | $100,000 |
| JULLIARD SCHOOL | $50,000 |
| THE ANIMAL MEDICAL CENTER DBA STEPHEN & CHRISTINE SCHWARZMAN ANIMAL MEDICAL | $50,000 |
| SCAN-HARBOR INC | $50,000 |
| CONGREGATION EMANU EL OF THE CITY OF NY | $25,000 |
| METROPOLITAN MUSEUM OF ART | $12,500 |
| BEST FRIENDS ANIMAL SOCIETY | $10,000 |
| STEPHEN WISE FREE SYNAGOGUE | $10,000 |
| GUILD HALL OF EAST HAMPTON INC | $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 (FY20–25, $4.8M) land where the poverty rate runs at 7%, against an area that typically sits at 12%. 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.
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 +47% since the first grant, against 0% for the ones you funded once.
23 repeat relationships — 12 still active in FY2025, 11 since wound down; 5 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, 98% of grant dollars renewed an existing relationship; $84k 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
- NYNEW YORK CITY BALLET INC6× · 2017–2025 · $5.5M · revenue +21%
- SRSOLOMON R GUGGENHEIM FOUNDATION6× · 2017–2025 · $2.6M · revenue +43%
- ICINTERFAITH CENTER OF NEW YORK INC7× · 2017–2025 · $2.4M · revenue +101% · 58% of their budget
Funded once
- LRLONGHOUSE RESERVEone grant, 2021 · $1.3M · revenue -69%
- TGTHE GRADUATE CENTER FOUNDATION INCgraduatedone grant, 2017 · $500k · revenue +147%
- AOARF OF THE HAMPTONS CAPITAL FDone grant, 2021 · $400k
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.
The museum's mission statement is: "to discover, interpret, and disseminate - through scientific research and education - knowledge about human cultures, the natural world, and the universe."
The mission of the jewish museum is to collect, preserve, exhibit and interpret art and jewish culture. see schedule o for more information.
The museum of the city of new york fosters understanding of the distinctive nature of urban life in the world's most influential metropolis. it engages visitors by celebrating, documenting, and interpreting the city's past, present, and…
The mission of the brooklyn institute of arts and sciences, d/b/a brooklyn museum (the "museum") is to bring people together through art and experiences that inspire celebration, compassion, courage, and the will to act. (see schedule o).
The Morgan Library & Museum celebrates and shares the history and process of human creativity from antiquity to the present day through the preservation, study, and interpretation of a dynamic and growing collection.
The new york botanical garden is a museum of plants and a scientific research center devoted to the study of plants and their uses. it is the garden's mission to improve public understanding of the natural world, horticulture, and the…
The Museum of Modern Art is a private, non-profit institution chartered by the State of New York Department of Education in 1929 to foster public awareness of modern and contemporary art. (Continued in Schedule O)
The long island museum is dedicated to inspiring people of all ages with an understanding and enjoyment of american art, history and carriages as expressed through the heritage of long island and its diverse communities.
Bard college seeks to provide a challenging academic program and a supportive environment that fosters a collaborative interchange of ideas in the classroom as well as ambition to achieve excellence.
Organization's mission statement true to the ambitious vision of its founder and her spirit of creative risk-taking, the mission of the isabella stewart gardner museum is: - to bring to life and preserve the rich historic collection; - to…
The huntington library, art museum, and botanical gardens shares its world-renowned collections to support scholarship, foster learning, inspire creativity, and offer transformative experiences for diverse audiences.
For reference, the grantee most central to the portfolio’s shape is The New York Public Library Astor Lenox and Tilden Foundations and the most unlike its peers is Wildlife Conservation Society. 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 51 years old; the field is 18. You back the established end — and your money leans older still.
The field is 18% startups (under 5 years old) — 3% 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.
36 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. 36 of the 47 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 NEW YORK CITY BALLET INC ↗
- Who funds Bridgehampton Child Care and Recreational Center Inc ↗
- Who funds JEWISH COMMUNAL FUND ↗
- Who funds SOLOMON R GUGGENHEIM FOUNDATION ↗
- Who funds INTERFAITH CENTER OF NEW YORK INC ↗
- Who funds PUBLICOLOR INC ↗
- Who funds LONGHOUSE RESERVE ↗
- Who funds BYRD HOFFMAN WATER MILL FOUNDATION ↗
- Who funds ANIMAL RESCUE FUND OF THE HAMPTONS INC ↗
- Who funds ISRAEL GUIDE DOG CENTER FOR THE BLIND ↗
- Who funds SCAN-HARBOR INC ↗
- Who funds Fordham University ↗
- Who funds The New York Public Library Astor Lenox and Tilden Foundations ↗
- Who funds Retreat Inc ↗
- Who funds THE MUSEUM OF FINE ARTS HOUSTON ↗
- Who funds PECONIC LAND TRUST INC ↗
- Who funds THE NATURE CONSERVANCY ↗
- Who funds THE GRADUATE CENTER FOUNDATION INC ↗
- Who funds MADOO CONSERVANCY INC ↗
- Who funds HALCYON FOUNDATION ↗
- Who funds THE ANIMAL MEDICAL CENTER ↗
- Who funds Wildlife Conservation Society ↗
- Who funds THE PARRISH ART MUSEUM INC ↗
- Who funds CAREERS THROUGH CULINARY ARTS PROGRAM DBA CULINARY CAREERS PROGRAM ↗
- Who funds HOUR CHILDREN INC ↗
- Who funds JUILLIARD SCHOOL ↗
- Who funds BROOKLYN ACADEMY OF MUSIC INC ↗
- Who funds BEST FRIENDS ANIMAL SOCIETY ↗
- Who funds METROPOLITAN MUSEUM OF ART ↗
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: Jewish Communal Fund · The Goldman Sachs Charitable Gift Fund · Fjc · The New York Community Trust · Cal Foundation Inc · National Philanthropic Trust · The Campbell Family Foundation · Corner Foundation Inc · The Donald and Barbara Zucker Family Foundation · Boston Foundation Inc · Gs Donor Advised Philanthropy Fund for Wealth Management Inc · Morgan Stanley Global Impact Funding Trust 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 Joseph & Sylvia Slifka 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.
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 Joseph & Sylvia Slifka Foundation Inc?
Find your warmest path to Joseph & Sylvia Slifka 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.