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Jonathan & Marjorie Slass Foundation at a glance

· Private foundation

Jonathan & Marjorie Slass Foundation

$100
Granted FY2023
1
Grants FY2023
1
States reached
$100
Largest
01What it fundsRead
02The needRead
03Its granteesRead
04Its fieldRead
01What it funds
0188% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2018 to 2023.

Religion$51kEducation$51kInternational$43kHuman Services$13kPhilanthropy$12kHealth$11kOther$0
02FY2023 · 1 grant

Where the money goes

Grants by size, and the largest recipients.

$100
Median grant
1
States reached
$363
Total assets
Largest grants
RecipientAmount
SHARSHERET$100
02The need
03

Does the money reach high-need areas?

Each grant placed by the hardship in its grantee’s ZIP, against the area’s typical level.

show:

Dollar for dollar, its grants (FY18–23) land where the poverty rate runs at 8%, against an area that typically sits at 10%. 29% of its dollars go to grantees based in above-average-need neighborhoods. Its grants skew toward lower-need ZIPs.

area typical 10%ST BALDRICK'S FOUNDATION: $50 → 14%LEUKEMIA & LYMPHOMA SOCIETY: $30 → 9%AMERICAN FRIENDS OF MAGEN DAVID ADOM: $150 → 17%AMERICAN HEART ASSOCIATION: $15 → 14%BT EVERYDAY HERO: $54 → 9%PROJECT INSPIRE: $36 → 14%AMERICAN ISRAEL EDUCATION FUND: $8k → 8%VANDERBUILT UNIVERSITY ALUMNI: $10k → 14%ALPHA EPILSON PI FOUNDATION: $10k → 16%JCC OF BRIDGEWATER: $30k → 5%SHARSHERET: $5k → 7%FRIENDS OF ISRAEL: $50 → 8%SHALOM HERITAGE CENTER: $2k → 11%PARTNERS IN TORAH: $36 → 12%CONGREGATION OHEB SHALOM: $18 → 16%JEWISH WOMEN'S RENAISSANCE PROJECT: $2k → 8%THIRTEEN STATION PARTNERS: $250 → 17%VANDERBUILT UNIVERSITY ALUMNI: $10k → 14%ALPHA EPILSON PI FOUNDATION: $10k → 16%TEMPLE SHALOM: $25k → 5%SHARSHERET: $5k → 7%JEWISH WOMEN'S RENAISSANCE PROJECT: $180 → 8%UNITED SYNAGOGUE OF CONSERVATIVE JUDIASM: $200 → 17%VANDERBUILT ALUMNI: $10k → 14%TEMPLE SHALOM: $11k → 5%SHARSHERET: $100 → 7%FRIENDS OF YERMIN ORDE: $35k → 8%MEMORIAL SLOAN KETTERING: $100 → 17%VANDERBILT HILLEL: $1k → 14%JEWISH FEDERATION: $10k → 5%UNITED SYNAGOGUE OF CONSERVATIVE JUDIASM: $100 → 17%VANDERBILT UNIVERSITY: $10k → 14%TEMPLE SHALOM: $10k → 5%SSB JEWISH COMMUNITY CENTER: $3k → 5%JEWISH FEDERATION: $2k → 5%BRIDGEWATER RARITAN HIGH SCHOOL SCHOLARSHIP FUND: $500 → 5%JEWISH FEDERATION: $250 → 5%CENTURY FOR THE CURE: $150 → 5%JEWISH FAMILY SERVICE OF SHW: $10k → 5%JEWISH FAMILY SERVICE OF SHW: $50 → 5%RUTGERS PREPATORY SCHOOL: $250 → 5%RUTGERS PREPARTORY SCHOOL: $250 → 5%0%20%40%50%more need →
grant to an above-average-need area below average· circle size = grant amount
How this is measured
Matched: human-services grants are those whose grantee’s IRS cause code is Human Services. Placed by people below the poverty line in the grantee’s ZIP, averaged from the tracts in that ZIP.

Which US states its grants reach

MI
NY
IN
NJ
CA
MD
TN
SC
DC
TX
How this is measured
US grants placed by each grantee’s ZIP, which can differ from where services are delivered. Need from public data (U.S. Census/ACS, CDC PLACES, Eviction Lab, USDA), shown as context about the area, never attributed to the funder’s giving.
03Its grantees
repeat funding

Who it funds again

Organizations funded in more than one year, against those funded once.

55%of every dollar goes to organizations it has funded before.
$122k · 9 repeat orgs$100k to everyone else

Grantees it renews have grown median revenue +69% since the first grant, against +64% for those funded once.

9 repeat relationships: 1 still active in FY2023, 8 since wound down.

How the two cohorts compare

Re-uppedFunded once

Organizations

9
21

Total granted

$122k
$100k

Median revenue growth · since first grant

+69%
+64%

Still filing today

44%
38%

New vs renewed · share of each year

In FY2023, 100% of grant dollars renewed an existing relationship; $0 went to new ones.

50%100%’18’19’20’21’23
RenewedFirst-time

Where new relationships form · theme of each grantee’s first grant

’18’19’20’21’23
EducationInternationalHealthReligionPhilanthropyOther
How this is measured
First-time means a grantee’s first year in the filing window; renewed means funded in an earlier year too. The renewed share climbs naturally as a portfolio matures, so the signal is a year that bucks it (a wave of new grantees). 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

  • AE
    ALPHA EPSILON PI FOUNDATION
    2× · 2018–2019 · $20k · revenue +69%
  • SI
    Sharsheret Inc
    3× · 2019–2023 · $10k · revenue +117%
  • MU
    MOMENTUM UNLIMITED INC
    2× · 2018–2019 · $2k · revenue +2%

Funded once

  • II
    IMPACTISRAEL INCgraduated
    one grant, 2019 · $35k · revenue +64%
  • IG
    Individual grant recipient
    one grant, 2018 · $30k
  • IG
    Individual grant recipient
    one grant, 2019 · $10k
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.

04Its field

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.

1
Sherit Isroel
—
2
The Shalom Hartman Institute of North America

The shalom hartman institute (shi) is a leading research and educational center serving israel and world jewry. we work to enrich the moral and spiritual life of israel and the jewish people, deepen the commitment to pluralism and israel's…

International
3
Bar Ilan University in Israel Inc

Biu produces students who excel in the sciences, humanities, law, engineering, business & the arts.

—
4
Weizmann Institute of Science

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…

Science & Tech
5
The Israel Innovation Fund Inc

Our vision is to reignite the zionist spirit and meet the needs of jewish civilization in the twenty-first century by connecting people around the world through the vibrancy and creativity of contemporary israeli culture.

Arts & Culture
6
The Israel Institute Inc

The israel institute, inc. (the institute) enhances knowledge about modern israel by ensuring that more students have access to courses about israel during their time on campus.

International
7
Dana-Farber Cancer Institute Inc

The mission of dfci is to provide expert, compassionate, and equitable care to children, adults, and their families, while advancing the understanding, diagnosis, treatment, cure, and prevention of cancer and related diseases. we train new…

Health
8
Board of Jewish Education Inc

The organization works to inspire and empower educators and institutions to create transformative jewish learning experiences for children, teens, and families. building on its historic role serving jewish day schools, congregations, and…

Religion
9
Albert Einstein College of Medicine

Committed to exceptional healthcare quality for all and actively engaged with our community, einstein drives scientific discovery and educates compassionate leaders in health and science.

Education
10
Jewish Voice Ministries Intl

To proclaim the gospel, grow the messianic jewish community and engage the church concerning israel and the jewish people. this is done through education, evangelism and being a movement leader, all with excellence in order to transform…

—
11
Israel-America Academic Exchange

Israel-america academic exchange (iaae) is a nonprofit organization whose mission is todeepen the understanding of israel and the middle east within the international academiccommunity. the organization organizes educational missions and…

International
12
Sanford Burnham Prebys Medical Discovery Institute

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,…

Health
How this is measured
The grantee most central to the portfolio’s shape is Impactisrael Inc; the most unlike its peers is American Israel Education Fund. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
04the grantee network

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.

0
Load-bearing (≥25% of a budget)
3
Early backer (in before they grew)
12/12
Grantees still filing
9/12
Grew since first funded

Where the money sits, by cause and then by grantee

TEMPLE SHOLOM: $46,245 · OtherTEMPLE SHOLOMIndividual grant recipient: $30,150 · OtherIndividual grant recipientVANDERBUILT UNIVERSITY ALUMNI: $20,000 · OtherVANDERBUILT UNIVERSITY ALUMNIJEWISH FEDERATION: $12,430 · OtherJEWISH FEDERATIONJEWISH FAMILY SERVICE OF SHW: $10,248 · OtherJEWISH FAMILY SERVICE OF SHWIndividual grant recipient: $10,000 · OtherIndividual grant recipient+12 more: $6,758 · OtherIMPACTISRAEL INC: $35,000 · InternationalIMPACTISRAEL INCAMERICAN ISRAEL EDUCATION FUND: $8,000 · InternationalAMERICAN ISRAEL EDUCAT…+1 more: $150 · InternationalALPHA EPSILON PI FOUNDATION: $20,000 · EducationALPHA EPSILON P…Vanderbilt University: $10,000 · EducationVanderbilt Univ…+1 more: $500 · EducationSharsheret Inc: $10,172 · Health+2 more: $45 · HealthMOMENTUM UNLIMITED INC: $1,980 · Religion+1 more: $36 · ReligionST BALDRICK'S FOUNDATION INC: $50 · Philanthropy
Other$135,831International$43,150Education$30,500Health$10,217Religion$2,016Philanthropy$50

Each grantee by its size and the funder’s share of it; top left is load-bearing

25%50%75%100%$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetIMPACTISRAEL INC: $35,000 over 1y, 0.4% of budgetALPHA EPSILON PI FOUNDATION: $20,000 over 2y, 0.5% of budgetSharsheret Inc: $10,172 over 3y, 0.1% of budgetVanderbilt University: $10,000 over 1y, 0.0% of budgetAMERICAN ISRAEL EDUCATION FUND: $8,000 over 1y, 3.9% of budgetMOMENTUM UNLIMITED INC: $1,980 over 2y, 0.0% of budgetRUTGERS PREPARATORY SCHOOL: $500 over 2y, 0.0% of budgetAMERICAN FRIENDS OF MAGEN DAVID ADOM: $150 over 1y, 0.0% of budgetST BALDRICK'S FOUNDATION INC: $50 over 1y, 0.0% of budgetBLOOD CANCER UNITED INC: $30 over 1y, 0.0% of budgetAmerican Heart Association Inc: $15 over 1y, 0.0% of budget
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 IMPACTISRAEL INC ↗
  • Who funds ALPHA EPSILON PI FOUNDATION ↗
  • Who funds Sharsheret Inc ↗
  • Who funds Vanderbilt University ↗
  • Who funds AMERICAN ISRAEL EDUCATION FUND ↗
  • Who funds MOMENTUM UNLIMITED INC ↗
  • Who funds RUTGERS PREPARATORY SCHOOL ↗
  • Who funds AMERICAN FRIENDS OF MAGEN DAVID ADOM ↗
  • Who funds ST BALDRICK'S FOUNDATION INC ↗
  • Who funds PARTNERS IN TORAH ↗
  • Who funds BLOOD CANCER UNITED INC ↗
  • Who funds American Heart Association Inc ↗

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.

Vanguard Charitable E…Morgan Stanley Global…Fidelity Investments …Donor Advised Charita…Amazonsmile Foundation
Vanguard Charitable Endowment ProgramPA9.6× affinity5 shared granteesties to 4 of 4Hover any node to trace its alignments.Compare side by side →

Open a dossier: Vanguard Charitable Endowment Program · Morgan Stanley Global Impact Funding Trust Inc · Fidelity Investments Charitable Gift Fund · Donor Advised Charitable Giving Inc · Amazonsmile Foundation

How this is measured
Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. Overlap is association, not proof of shared intent.

How much its grantees rely on government

Each dot is one organization Jonathan & Marjorie Slass Foundation funds: left to right is the share of its income from government, bottom to top the share from Jonathan & Marjorie Slass Foundation. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 30%0%1%3%5%funder's share of their income ↑0%4%8%11%15%share of the org’s income from government →median 4%
  • Sharsheret Inc: 4% of income from government
no gov moneyreceives it· size = income
3get no government money at all
2report government grants on their 990 we could not trace to a source (not plotted)
0rely on government for over half their income
⤢ axis zoomed · 0–15%
typical government reliance, FY20–25
How this is measured
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 a grant caused the public funding. Coverage is precision-first, a floor rather than 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 to 24 months.

On method. Every financial figure here is read from IRS e-file XML, the funder’s own 990/990-PF, and from the multi-year returns of the 30 grantees we resolved, each linked to its source. Grantee outcomes are each organization’s own program-service reporting (Form 990, Part III), read as association with funding, never as caused by it. Low-confidence name matches are suppressed rather than guessed. How we build these →

How this is measured
Each figure carries one of six labels. Filed is what the funder reported on its return. Official is another government record about an organization, such as a federal award or a charity register, joined by name where no shared identifier exists. Resolved is an identity we worked out where the filing named a recipient without an EIN, kept only above a measured confidence threshold. Computed is arithmetic over those, like themes, portfolio clusters and co-funder strength. Context is a statistic about a place rather than about an organization, which is what the need overlay is: it describes the area a grantee’s address sits in, not where its work lands. Inferred is drawn by a model from text, like the partnerships read out of public news and organization websites. Each is labeled where it appears.

Generated from the IRS Form 990-PF e-file return for fiscal year 2023, released 2023. Filings run roughly 12 to 24 months behind; figures are dated accordingly.

Possibly out of date. A more recent filing (FY2025) is on record and reports no grant expense, so the figures above are from FY2023, the most recent year this funder made grants.

Source object · view filing

Play a game based on Jonathan & Marjorie Slass’ filings →

More from the funding graph

The unnamed billions
grants reported with no recipient in the public record
The regranting layer
51% of grant dollars land in the regranting layer
The DAF merry-go-round
$9.7B circulates between donor-advised funds
The endowment market
who holds foundation money, and what just moved
The camps
funders cluster by geography, not ideology
By state
where grant money is based, and what stays home