· Private foundation
Jack Silberberg 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.
Read this first · the figures below need context
58% of Jack Silberberg Foundation’s FY2025 grant dollars went to The Jewish Federation Of Greater New Haven Inc, not to grantees.
Its money now reaches organizations through that sponsor, which does not report who recommended each grant. FY2025 names 4 organizations directly, so a portfolio cannot be read from it.
Organizations named directly on the return
Amber years are those where most dollars went to a sponsor.
What it funded, over time
Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2025.
Where the money goes
Grants by size, and the largest recipients.
By grant size · FY2025
- Under $10k7 grants · $15k
- $10k–50k1 grant · $20k
| Recipient | Amount |
|---|---|
| JEWISH FEDERATION OF GREATER NEW HAVEN | $20,000 |
| TEMPLE SINAI OF BERGEN COUNTY | $4,000 |
| CONGREGATION MISHKAN ISRAEL | $3,700 |
| SUTTON PLACE SYNAGOGUE | $1,800 |
| LEUKEMIA & LYMPHOMA SOCIETY | $1,500 |
| LAFAYETTE COLLEGE | $1,500 |
| AMERICAN CANCER SOCIETY | $1,000 |
| PS 267 PTA | $1,000 |
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 (FY18–18, $500) land where the poverty rate runs at 14%, against an area that typically sits at 9%. 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.
Grantees it renews have grown median revenue +9% since the first grant, against +6% for those funded once.
14 repeat relationships: 7 still active in FY2025, 7 since wound down.
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, 100% of grant dollars renewed an existing relationship; $0 went to new ones.
Where new relationships form · theme of each grantee’s first grant
How this is measured
Backed again, and grew
- TSTEMPLE SINAI OF BERGEN COUNTY4× · 2022–2025 · $27k
- CMCONGREGATION MISHKAN ISRAEL9× · 2017–2025 · $27k
- JCJEWISH CENTER FOR THE UNITED NATIONS4× · 2022–2025 · $12k
Funded once
- UJUNITED JEWISH APPEALone grant, 2017 · $10k
- IGIndividual grant recipientone grant, 2018 · $4k
- TBTENAFLY BOARD OF EDUCATIONone grant, 2022 · $2k
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.
The mission of mit is to advance knowledge and educate students in science, technology, and other areas of scholarship that will best serve the nation and the world in the 21st century.
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…
The university's goal in the coming decade is to advance learning through the integration of teaching, research and service to others. the core of this goal is to prepare graduates to engage with the world and lead lives of meaning. to do…
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…
Undergraduate, graduate, and professional education and research across a broad array of academic domains.
Dartmouth College educates the most promising students and prepares them for a lifetime of learning and of responsible leadership, through a faculty dedicated to teaching and the creation of knowledge.
The bac is committed to provide excellence in design education grounded in practice and accessible to diverse communities.
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.
Education, research, medical services and other public services.
Wpi transforms lives, turns knowledge into action to confront global challenges, and revolutionizes stem through distinctive and inclusive education, projects and research. (http://www.wpi.edu/about/mission.html)
The primary mission of furman as a liberal arts institution is to provide a distinctive education in fine arts, humanities, social sciences, mathematics and the sciences, as well as selected professional disciplines.
To improve the world through research, scholarship, education, preservation, and practice.
How this is measured
12 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. 12 of the 30 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 THE JEWISH FEDERATION OF GREATER NEW HAVEN INC ↗
- Who funds LAFAYETTE COLLEGE ↗
- Who funds BLOOD CANCER UNITED INC ↗
- Who funds READ TO GROW INC ↗
- Who funds Trustees of Tufts College ↗
- Who funds CYSTIC FIBROSIS FOUNDATION ↗
- Who funds THE CONNECTICUT PLAYERS FOUNDATION INC D/B/A LONG WHARF THEATRE ↗
- Who funds BIRTHRIGHT ISRAEL FOUNDATION ↗
- Who funds American National Red Cross & Its Constituent Chapters and Branches ↗
- Who funds CONNECTICUT PUBLIC BROADCASTING INC ↗
- Who funds TRUSTEES OF BOSTON UNIVERSITY ↗
- Who funds The George Washington University ↗
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: Jewish Communal Fund · Gs Donor Advised Philanthropy Fund for Wealth Management Inc · Morgan Stanley Global Impact Funding Trust Inc · National Philanthropic Trust · Vanguard Charitable Endowment Program · Donor Advised Charitable Giving Inc · Fidelity Investments Charitable Gift Fund · Amazonsmile Foundation
How this is measured
How much its grantees rely on government
Each dot is one organization Jack Silberberg Foundation funds: left to right is the share of its income from government, bottom to top the share from Jack Silberberg Foundation. Bigger dots raise more.
- Trustees of Tufts College: 13% of income from government
- Trustees of Boston University: 12% of income from government
- Connecticut Public Broadcasting Inc: 3% of income from government
- The Jewish Federation of Greater New Haven Inc: 1% of income from government
- The Connecticut Players Foundation Inc D/B/a Long Wharf Theatre: 1% of income from government
How this is measured
Warm introductions · Powered by PlinthPlus
How do I get to Jack Silberberg Foundation?
Find your warmest path to Jack Silberberg 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.
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