· Private foundation
The Sidney & Mildred Edelstein 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 clustered by its grantee’s IRS cause code (NTEE), by year — across FY2017–2025.
Where the money goes
Your grants by size, and where they go.
By grant size · FY2025
- Under $10k5 grants · $20k
- $10k–50k2 grants · $20k
- $50k–250k1 grant · $105k
- $250k+1 grant · $739k
| Recipient | Amount |
|---|---|
| AMERICAN FRIENDS OF HEBREW UNIVERSITY | $739,000 |
| AMERICAN COMMITTEE FOR SHENKAR COLLEGE | $105,000 |
| FRIENDS OF THE PORT WASHINGTON PUBLIC LIBRARY INC | $10,000 |
| THE HOLOCAUST MUSEUM & CENTER FOR TOLERANCE & EDUCATION | $10,000 |
| MAKE SCHOOLS SAFE INC | $5,000 |
| LIFETOWN INC | $5,000 |
| AMERICAN FRIENDS OF MAGEN DAVID ADOM | $5,000 |
| DANIELS MUSIC FOUNDATION | $2,500 |
| THE SOUP KITCHEN INC | $2,500 |
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 (FY17–25, $88k) land where the poverty rate runs at 10%, against an area that typically sits at 10%. 38% 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 +40% since the first grant, against 0% for the ones you funded once.
15 repeat relationships — 7 still active in FY2025, 8 since wound down; 2 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, 99% of grant dollars renewed an existing relationship; $8k 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
- AFAMERICAN FRIENDS OF HEBREW UNIVERSITY INC9× · 2017–2025 · $4.6M · revenue +40%
- IGISRAEL GUIDE DOG CENTER FOR THE BLIND3× · 2017–2020 · $55k · revenue +36%
- LTLife Town Inc6× · 2017–2025 · $30k · revenue +182%
Funded once
- NNNAMES NOT NUMBERS INCone grant, 2022 · $12k · revenue -59%
- HHADASSAHone grant, 2022 · $10k
- SFSERVICES FOR CHILDREN WITH HIDDEN INTELLIGENCEgraduatedone grant, 2022 · $5k · revenue +64%
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.
Strengthen progressive judaism in israel through support of the daniel centers in tel aviv/jaffa.
Biu produces students who excel in the sciences, humanities, law, engineering, business & the arts.
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 jewish heritage - a living memorial to the holocaust is new york's contribution to the global responsibility to never forget. see schedule o for additional information.
The weizmann institute of science, located in rehovot, israel, is one of the worlds top-ranking, multidisciplinary research institutions. at any one time, several thousand scientists, staff and students are involved in hundreds of research…
To promote and financially support the activities of the jewish museum berlin and similar institutions whose mission is to pursue the study of the history and culture of german-speaking jewry.
We fundraise in the u.s. to support, and raise awareness of, bar-ilan university in israel.
The mission of the institute is to translate basic genetic and molecular mechanisms of schizophrenia and related developmental brain disorders into clinical advances that change the lives of affected individuals. it is catalyzing a new…
For reference, the grantee most central to the portfolio’s shape is Jewish Federation of Greater Metrowest Nj and the most unlike its peers is Port Washington Education Foundation. 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 41 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 — 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.
21 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. 21 of the 28 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 AMERICAN FRIENDS OF HEBREW UNIVERSITY INC ↗
- Who funds PORT WASHINGTON EDUCATION FOUNDATION ↗
- Who funds HOLOCAUST MUSEUM & CENTER FOR TOLERANCE AND EDUCATION ↗
- Who funds ISRAEL GUIDE DOG CENTER FOR THE BLIND ↗
- Who funds Life Town Inc ↗
- Who funds THE FRIENDS OF THE PORT WASHINGTON LIBRARY ↗
- Who funds DANIEL'S MUSIC FOUNDATION ↗
- Who funds NAMES NOT NUMBERS INC ↗
- Who funds Community Food Bank Of New Jersey Inc ↗
- Who funds JEWISH FEDERATION OF GREATER METROWEST NJ ↗
- Who funds FRIENDS OF THE ISRAEL DEFENSE FORCES ↗
- Who funds MAKE SCHOOLS SAFE INC DBA MAKE OUR SCHOOLS SAFE ↗
- Who funds SERVICES FOR CHILDREN WITH HIDDEN INTELLIGENCE ↗
- Who funds THE MARFAN FOUNDATION INC ↗
- Who funds AMERICAN FRIENDS OF MAGEN DAVID ADOM ↗
- Who funds The Soup Kitchen Inc ↗
- Who funds BLOCK INSTITUTE INC ↗
- Who funds ST JUDE CHILDREN'S RESEARCH HOSPITAL INC ↗
- Who funds NEW WORLD PREPARATORY CHARTER SCHOOL ↗
- Who funds WEVE GOT FRIENDS INC ↗
- Who funds JILL E HARRINGTON HANZALIK MEMORIAL FUND 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 Goldman Sachs Charitable Gift Fund · Investors Foundation Inc · Jewish Communal Fund · Gs Donor Advised Philanthropy Fund for Wealth Management Inc · American Endowment Foundation · National Philanthropic Trust · The Bank of America Charitable Foundation Inc · Vanguard Charitable Endowment Program · Fidelity Investments Charitable Gift Fund · Donor Advised Charitable Giving 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 Sidney & Mildred Edelstein 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.
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 Sidney & Mildred Edelstein Foundation?
Find your warmest path to The Sidney & Mildred Edelstein Foundation 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.