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Isabelle Russek Leeds Foundation at a glance

· Private foundation

Isabelle Russek Leeds 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.

$58k
Granted FY2025still arriving
15
Grants FY2025still arriving
8
States reached
$15k
Largest
01What it fundsRead
02The needRead
03Its granteesRead
04Its fieldRead
05Through PlinthRead
01What it funds
0195% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2019 to 2025.

Philanthropy$137kArts & Culture$77kEducation$37kReligion$27kHealth$17kHuman Services$9kRecreation & Sports$7kPublic Benefit$7kOther$0
02FY2025 · 15 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2025

  • Under $10k13 grants · $33k
  • $10k–50k2 grants · $25k
$2,500
Median grant
8
States reached
$803k
Total assets
Largest grants
RecipientAmount
TOPA INSTITUTE$15,000
OJAI MUSIC FESTIVAL$10,000
MILL REEF FUND$5,000
OJAI MUSIC ACADEMY FOUNDATION$5,000
OJAI PERFORMING ARTS CENTER$5,000
BROWN UNIVERSITY$5,000
CROHN'S AND COLITIS FOUNDATION$5,000
MERCY FIRST$2,500
PALM BEACH COUNTRY CLUB FOUNDATION$2,000
CENTRAL PARK CONSERVANCY$1,000
THE SUMMER CAMP$1,000
SAVE THE CHILDREN FEDERATION$750
WOMEN SPORTS FOUNDATION$500
THIRTEEN$250
AMERICAN CANCER SOCIETY$200
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 (FY24–25, $5k) land where the poverty rate runs at 20%, against an area that typically sits at 10%. 100% of those dollars go to grantees based in above-average-need neighborhoods. Most of its grants land in higher-need ZIPs.

area typical 10%MERCY FIRST: $3k → 20%MERCY FIRST: $3k → 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.

Which US states its grants reach

ME
MI
NY
MA
CT
RI
CA
DC
GA
TX
FL
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.

68%of every dollar goes to organizations it has funded before.
$162k · 23 repeat orgs$78k to everyone else

23 repeat relationships: 9 still active in FY2025, 14 since wound down; 5 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

23
28

Total granted

$162k
$55k

Median revenue growth · since first grant

+10%
+30%

Still filing today

65%
54%

New vs renewed · share of each year

In FY2025, 58% of grant dollars renewed an existing relationship; $22k went to new ones.

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

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

’19’20’21’22’23’24’25
Arts & CultureHealthPhilanthropyEducationInternationalPublic Safety & DisasterOther
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

  • UJ
    UNITED JEWISH APPEAL-FEDERATION OF JEWISH PHILANTHROPIES OF NEW YORK INC
    2× · 2021–2022 · $40k · revenue +5%
  • OF
    OJAI FESTIVALS LTD
    3× · 2023–2025 · $20k · revenue +1%
  • MM
    METROPOLITAN MUSEUM OF ART
    6× · 2019–2024 · $7k · revenue +76%

Funded once

  • UW
    UNITED WAY OF PALM BEACH
    one grant, 2020 · $20k
  • PB
    Palm Beach Civic Association Incgraduated
    one grant, 2019 · $5k · revenue +30%
  • SO
    SEEDS OF BELONGING OJAI
    one grant, 2024 · $5k
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
Boston Architectural College

The bac is committed to provide excellence in design education grounded in practice and accessible to diverse communities.

—
2
The Trustees of Princeton University

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…

Education
3
New York University

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
4
University of New Haven

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…

Education
5
The Pierpont Morgan Library

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.

Education
6
The Brooklyn Institute of Arts and Sciences

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).

Arts & Culture
7
Massachusetts Institute of Technology

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.

Education
8
Institute for Advanced Study - Louis Bamberger & Mrs Felix Fuld Foundation

The institute for advanced study (the institute) is one of the world's leading centers for theoretical research and intellectual inquiry. see schedule o.

Science & Tech
9
President and Fellows of Harvard College

Undergraduate, graduate, and professional education and research across a broad array of academic domains.

Education
10
Manhattanville University

To educate students to be ethical and socially responsible leaders in a global community.

Education
11
The Baruch College Fund

The baruch college fund is an organization engaged in generating, encouraging and promoting the educational welfare of the students of the bernard m. baruch college of the city university of new york.

Education
12
Columbia College Chicago

The organization's mission is to educate students for creative occupations in diverse fields of arts and media.

Education
How this is measured
The grantee most central to the portfolio’s shape is Jewish Federation of Palm Beach County Inc; the most unlike its peers is Amogerone Volunteer Fire Co #1 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

38 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. 38 of the 58 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)
4
Early backer (in before they grew)
37/38
Grantees still filing
27/38
Grew since first funded

Where the money sits, by cause and then by grantee

JEWISH FEDERATION OF PALM BEACH COUNTY INC: $75,000 · PhilanthropyJEWISH FEDERATION OF PALM BEACH COUNTY I…UNITED JEWISH APPEAL-FEDERATION OF JEWISH PHILANTHROPIES OF NEW YORK INC: $40,000 · PhilanthropyUNITED JEWISH APPEAL-FEDERATION OF JEWIS…MILL REEF FUND: $5,000 · Philanthropy+1 more: $1,000 · PhilanthropyUNITED WAY OF PALM BEACH: $20,000 · OtherUNITED WAY OF PALM BEACHCONGREGATION EMANUEL: $19,795 · OtherCONGREGATION EMANUELOJAI MUSIC ACADEMY FOUNDATION INC: $9,000 · OtherOJAI MUSIC ACADEMY FOUNDATION INCOJAI PERFORMING ARTS CENTER: $9,000 · OtherOJAI PERFORMING ARTS CENTERPARK EAST SYNAGOGUE: $7,450 · OtherPARK EAST SYNAGOGUESEEDS OF BELONGING OJAI: $5,000 · OtherPALM BEACH COUNTRY CLUB FOUNDATION INC: $4,000 · Other+30 more: $33,200 · Other+30 moreOJAI FESTIVALS LTD: $20,000 · Arts & CultureOJAI FESTIVALS LT…TOPA INSTITUTE PKA YIDDISHKAYT: $15,000 · Arts & CultureTOPA INSTITUTE PK…METROPOLITAN MUSEUM OF ART: $6,960 · Arts & CultureMETROPOLITAN MUSE…The Society of the Four Arts Inc: $5,300 · Arts & CultureThe Society of th…Museum of Modern Art: $3,650 · Arts & CultureMuseum of Modern …+2 more: $2,241 · Arts & CultureBROWN UNIVERSITY: $21,750 · Community ImprovementBROWN UNI…Palm Beach Civic Association Inc: $5,000 · Community ImprovementPalm Beac…CROHN'S & COLITIS FOUNDATION INC: $10,000 · HealthGREENWICH HOSPITAL: $1,250 · HealthAMERICAN CANCER SOCIETY INC: $600 · Health+1 more: $300 · HealthWellesley College: $6,200 · EducationOJAI VALLEY SCHOOL: $4,420 · Education+1 more: $250 · EducationMERCYFIRST: $5,000 · Human Services
Philanthropy$121,000Other$107,445Arts & Culture$53,151Community Improvement$26,750Health$12,150Education$10,870Human Services$5,000

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 budgetJEWISH FEDERATION OF PALM BEACH COUNTY INC: $75,000 over 1y, 0.2% of budgetUNITED JEWISH APPEAL-FEDERATION OF JEWISH PHILANTHROPIES OF NEW YORK INC: $40,000 over 2y, 0.0% of budgetBROWN UNIVERSITY: $21,750 over 5y, 0.0% of budgetOJAI FESTIVALS LTD: $20,000 over 3y, 0.2% of budgetCROHN'S & COLITIS FOUNDATION INC: $10,000 over 2y, 0.0% of budgetMETROPOLITAN MUSEUM OF ART: $6,960 over 6y, 0.0% of budgetWellesley College: $6,200 over 3y, 0.0% of budgetThe Society of the Four Arts Inc: $5,300 over 3y, 0.0% of budgetPalm Beach Civic Association Inc: $5,000 over 1y, 0.3% of budgetMILL REEF FUND: $5,000 over 1y, 0.5% of budgetMERCYFIRST: $5,000 over 2y, 0.0% of budgetOJAI VALLEY SCHOOL: $4,420 over 1y, 0.0% of budgetPALM BEACH COUNTRY CLUB FOUNDATION INC: $4,000 over 2y, 0.2% of budgetMuseum of Modern Art: $3,650 over 3y, 0.0% of budgetCENTRAL PARK CONSERVANCY INC: $3,000 over 3y, 0.0% of budgetPALM BEACH COUNTRY CLUB INC: $3,000 over 3y, 0.0% of budgetCITYMEALS-ON-WHEELS: $2,650 over 1y, 0.0% of budgetLINCOLN SCHOOL: $2,500 over 1y, 0.0% of budgetThe Gordon School: $2,000 over 1y, 0.0% of budgetGREENWICH HOSPITAL: $1,250 over 2y, 0.0% of budgetTown of Palm Beach United Way Inc: $1,000 over 1y, 0.0% of budgetTHE SUMMER CAMP INC: $1,000 over 1y, 0.1% of budgetRAYMOND F KRAVIS CENTER FOR THE PERFORMING ARTS INC: $1,000 over 1y, 0.0% of budgetAMERICAN CANCER SOCIETY INC: $600 over 4y, 0.0% of budgetTHE BREAST CANCER RESEARCH FOUNDATION INC: $500 over 1y, 0.0% of budgetUNITED STATES FUND FOR UNICEF: $500 over 1y, 0.0% of budgetCENTURY COUNTRY CLUB: $500 over 1y, 0.0% of budgetAmerican Heart Association Inc: $300 over 3y, 0.0% of budgetTHE ROCKEFELLER FOUNDATION: $250 over 1y, 0.0% of budgetUNITED WAY OF GREENWICH INC: $250 over 1y, 0.0% of budgetThe New York Public Library Astor Lenox and Tilden Foundations: $250 over 1y, 0.0% of budgetGLENVILLE VOLUNTEER FIRE CO INC: $100 over 1y, 0.4% of budgetFLORIDA SHERIFFS ASSOCIATION INC: $50 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.

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.

The Bank of America C…National Philanthropi…Morgan Stanley Global…Vanguard Charitable E…Donor Advised Charita…Fidelity Investments …Amazonsmile Foundation
The Bank of America Charitable Foundation IncNC7.6× affinity6 shared granteesties to 6 of 6Hover any node to trace its alignments.Compare side by side →

Open a dossier: The Bank of America Charitable Foundation Inc · National Philanthropic Trust · Morgan Stanley Global Impact Funding Trust Inc · Vanguard Charitable Endowment Program · Donor Advised Charitable Giving Inc · Fidelity Investments Charitable Gift Fund · 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 Isabelle Russek Leeds Foundation funds: left to right is the share of its income from government, bottom to top the share from Isabelle Russek Leeds Foundation. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 70%0%1%3%5%funder's share of their income ↑0%10%20%30%40%share of the org’s income from government →median 4%
  • Save the Children Federation Inc: 30% of income from government
  • Florida Sheriffs Association Inc: 4% of income from government
  • Wellesley College: 1% of income from government
  • Greenwich Hospital: 0% of income from government
no gov moneyreceives it· size = income
7get no government money at all
7report government grants on their 990 we could not trace to a source (not plotted)
0rely on government for over half their income
⤢ axis zoomed · 0–40%
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 Isabelle Russek Leeds Foundation?

Find your warmest path to Isabelle Russek Leeds 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 58 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

Play a game based on Isabelle Russek Leeds’ 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