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· Private foundation

Lotty Zucker 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.

$85k
Granted FY2025still arriving
18
Grants FY2025still arriving
3
States reached
$45k
Largest
01What it funds
0185% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2025.

International$359kEducation$221kReligion$24kArts & Culture$2kHuman Services$500Health$360Environment$250Other$0
02FY2025 · 18 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2025

  • Under $10k17 grants · $40k
  • $10k–50k1 grant · $45k
$1,800
Median grant
3
States reached
$221k
Total assets
Largest grants
RecipientAmount
AMERICAN FRIENDS OF HEBREW UNIV$45,000
OHOLEI TORAH$8,000
Individual grant recipient$6,800
AMERICAN FRIENDS OF JORDAN RIVER VILLAGE$5,000
YIVO INSTITUTE FOR JEWISH RESEARCH$5,000
INTERNATIONAL SURVEY OF JEWISH MONUMENTS$5,000
AUSTRALIAN NATIONAL UNIVERSITY$2,000
BARD GRADUATE CENTER$2,000
OHR SOMAYACH INT'L$1,800
RTA INC$1,500
BELZ INST IN ISRAEL$720
Individual grant recipient$600
JEWISH PARENT ACADEMY$500
LOWER EAST SIDE TENEMENT MUSEUM$500
Individual grant recipient$360
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:

Its human-services grants (FY25–25, $180) land where the poverty rate runs at 20%, against an area that typically sits at 13%. 100% of those dollars go to grantees based in above-average-need neighborhoods. Most of its grants land in higher-need ZIPs.

area typical 13%BONEI OLAM: $180 → 20%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.
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.

93%of every dollar goes to organizations it has funded before.
$576k · 8 repeat orgs$46k to everyone else

8 repeat relationships: 6 still active in FY2025, 2 since wound down; 12 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

8
6

Total granted

$576k
$15k

Median revenue growth · since first grant

+18%
+32%

Still filing today

50%
0%

New vs renewed · share of each year

In FY2025, 64% of grant dollars renewed an existing relationship; $31k went to new ones.

50%100%’17’18’19’20’21’22’23’24’25
RenewedFirst-time

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

’17’18’19’20’21’22’23’24’25
InternationalArts & CultureReligionEnvironmentHuman ServicesOther
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

  • AF
    AMERICAN FRIENDS OF HEBREW UNIVERSITY INC
    9× · 2017–2025 · $340k · revenue +40%
  • AF
    American Friends of Tel Aviv Univ
    6× · 2019–2024 · $155k · revenue -4%
  • AF
    AMERICNA FRIENDS OF TEL AVIV UNIV
    2× · 2017–2018 · $60k

Funded once

  • IG
    Individual grant recipient
    one grant, 2024 · $8k
  • IG
    Individual grant recipient
    one grant, 2024 · $6k
  • IO
    Institute of Biblical Culture Inc
    one grant, 2024 · $1k
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
Ohr Olam Corp

publish religious books

Religion
2
American Friends of Ish El Rayahu

To promote, benefit, and support Jewish religious, charitable & educational activities in Israel and the USA.

Religion
3
Ofeq Institute Inc

Discover and restore Jewish literary works

Religion
4
American Friends of Yeshivat Hakotel Inc

To support religious, charitable, scientific, literary and/or educational programs

Education
5
Eastern European Jewish Heritage Foundation
Philanthropy
6
Zichron Avrohom Yosef
Philanthropy
7
The Institute for Jewish Research and Publications Inc

None

Arts & Culture
8
Yeshiva Ohr Yisroel
Philanthropy
9
University of Judaism Foundation
—
10
Sherit Isroel
—
11
American Friends of Yeshiva Aish Hatorah
—
12
American Friends of Oseh Chayil

To further jewish education in israel

Religion
How this is measured
The grantee most central to the portfolio’s shape is American Friends of Hebrew University Inc; the most unlike its peers is Institute of Biblical Culture Inc. 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

11 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. 11 of the 27 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)
9/11
Grantees still filing
6/11
Grew since first funded

Where the money sits, by cause and then by grantee

AMERICAN FRIENDS OF HEBREW UNIVERSITY INC: $340,000 · InternationalAMERICAN FRIENDS OF HEBREW UNIVERSITY INCAmerican Friends of Tel Aviv Univ: $155,000 · InternationalAmerican Friends of Tel Aviv Univ+2 more: $17,000 · InternationalAMERICNA FRIENDS OF TEL AVIV UNIV: $60,000 · OtherAMERICNA FRIENDS OF…OHOLEI TORAH: $8,000 · OtherOHOLEI TORAHIndividual grant recipient: $7,500 · OtherIndividual grant re…Individual grant recipient: $6,800 · OtherIndividual grant re…Individual grant recipient: $6,000 · OtherIndividual grant re…OHR SOMAYACH INTERNATIONAL INC: $5,400 · OtherINTERNATIONAL SURVEY OF JEWISH MONUMENTS: $5,000 · Other+10 more: $10,980 · Other+10 moreYIVO INSTITUTE FOR JEWISH RESEARCH INC: $5,000 · ReligionInstitute of Biblical Culture Inc: $1,000 · ReligionLOWER EAST SIDE TENEMENT MUSEUM: $500 · Arts & CultureSLEEPING WEAZEL INC: $180 · Arts & CultureGREENFAITH INC: $250 · EnvironmentBonei Olam Inc: $180 · Human Services
International$512,000Other$109,680Religion$6,000Arts & Culture$680Environment$250Human Services$180

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

25%50%75%100%$100k$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetAMERICAN FRIENDS OF HEBREW UNIVERSITY INC: $340,000 over 9y, 0.1% of budgetAmerican Friends of Tel Aviv Univ: $155,000 over 6y, 0.1% of budgetAMERICAN FRIENDS OF JORDAN RIVER VILLAGE FOUNDATION: $10,000 over 2y, 0.5% of budgetAMERICAN JEWISH WORLD SERVICE INC: $7,000 over 3y, 0.0% of budgetOHR SOMAYACH INTERNATIONAL INC: $5,400 over 2y, 0.1% of budgetLOWER EAST SIDE TENEMENT MUSEUM: $500 over 1y, 0.0% of budgetSLEEPING WEAZEL INC: $180 over 1y, 0.4% 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 AMERICAN FRIENDS OF HEBREW UNIVERSITY INC ↗
  • Who funds American Friends of Tel Aviv Univ ↗
  • Who funds AMERICAN FRIENDS OF JORDAN RIVER VILLAGE FOUNDATION ↗
  • Who funds AMERICAN JEWISH WORLD SERVICE INC ↗
  • Who funds OHR SOMAYACH INTERNATIONAL INC ↗
  • Who funds YIVO INSTITUTE FOR JEWISH RESEARCH INC ↗
  • Who funds Institute of Biblical Culture Inc ↗
  • Who funds LOWER EAST SIDE TENEMENT MUSEUM ↗
  • Who funds GREENFAITH INC ↗
  • Who funds SLEEPING WEAZEL INC ↗
  • Who funds Bonei Olam 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 set of overlaps that mostly run through this funder rather than between each other.

Amazonsmile FoundationWA2.4× affinity4 shared granteesties to 0 of 0Hover any node to trace its alignments.Compare side by side →

Open a dossier: 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 Lotty Zucker Foundation funds: left to right is the share of its income from government, bottom to top the share from Lotty Zucker Foundation. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 00%0%1%3%5%funder's share of their income ↑0%5%10%15%20%share of the org’s income from government →
    no gov moneyreceives it· size = income
    0get no government money at all
    3report government grants on their 990 we could not trace to a source (not plotted)
    0rely on government for over half their income
    ⤢ axis zoomed · 0–20%
    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.
    05Through Plinth

    Warm introductions · Powered by PlinthPlus

    How do I get to Lotty Zucker Foundation?

    Find your warmest path to Lotty Zucker 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.

    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 27 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 2025, released 2025. Filings run roughly 12 to 24 months behind; figures are dated accordingly.

    Source object · view filing

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