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· Private foundation

Leo Claire & Robert Adenbaum 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.

$481k
Granted FY2025still arriving
24
Grants FY2025still arriving
9
States reached
$109k
Largest
01What it funds
0195% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2018 to 2024.

Health$876kEducation$505kAnimals$128kEnvironment$44kPublic Benefit$30kScience & Tech$12kRecreation & Sports$4kPublic Safety & Disaster$3kOther$0
02FY2025 · 24 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2025

  • Under $10k16 grants · $49k
  • $10k–50k5 grants · $124k
  • $50k–250k3 grants · $309k
$5,000
Median grant
9
States reached
$8.2M
Total assets
Largest grants
RecipientAmount
JUPITER MEDICAL CENTER FDN INC$109,250
UNIVERSITY OF FLORIDA FDN INC$100,000
LEWIS KATZ SCHOOL OF MEDICINE$100,000
BIG DOG RESCUE RANCH$30,000
LAFAYETTE COLLEGE ENHANCEMENT$25,000
Individual grant recipient$25,000
ASU FOUNDATION INC$25,000
FRIENDS OF MACARTHUR STATE PARK$18,720
MALTZ JUPITER THEATRE$5,000
ST JUDE CHILDREN'S HOSPITAL$5,000
SHRINER'S HOSPTAL FOR CHILDREN$5,000
GARY SENISE FOUNDATION$5,000
RADY CHILDREN'S HOSPITAL FOUNDATION$5,000
CMT RESEARCH FOUNDATION$3,000
LOGGERHEAD MARINE LIFE CENTER$2,500
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 (FY18–25) land where the poverty rate runs at 16%, against an area that typically sits at 9%. 98% of its dollars go to grantees based in above-average-need neighborhoods. Most of its grants land in higher-need ZIPs.

area typical 9%ASU FOUNDATION INC: $25k → 11%MIT RESOURCE DEVELOPMENT: $25k → 8%LAFAYETTE COLLEGE ENHANCEMENT: $25k → 11%Lewis Katz School of Medicine Temple University: $100k → 22%RADY CHILDREN'S HOSPITAL FOUNDATION: $5k → 11%ST JUDE CHILDREN'S HOSPITAL: $5k → 15%UNIVERSITY OF FLORIDA FDN INC: $100k → 19%GARY SENISE FOUNDATION: $5k → 14%MASSACHUSETTS INSTITUTE OF TECHNOLOGY: $5k → 8%LEWIS KATZ SCHOOL OF MEDICINE: $100k → 22%UNIVERSITY OF FLORIDA FDN INC: $100k → 19%LEWIS KATZ SCHOOL OF MEDICINE TU: $80k → 22%MALTZ JUPITER THEATRE: $5k → 11%University of Florida Foundation Inc: $100k → 19%LEWIS KATZ SCHOOL OF MEDICINE TU: $80k → 22%OCEAN CONSERVANCY: $5k → 14%UNIVERSITY OF FLORIDA FDN INC: $80k → 19%LEWIS KATZ SCHOOL OF MEDICINE: $80k → 22%Ocean Conservancy: $5k → 14%SHRINER'S HOSPTAL FOR CHILDREN: $5k → 13%UNIVERSITY OF FLORIDA FDN INC: $75k → 19%LEWIS KATZ SCHOOL OF MEDICINE: $75k → 22%OCEAN CONSERVANCY: $5k → 14%UNIVERSITY OF FLORIDA FDN INC: $60k → 19%LEWIS KATZ SCHOOL OF MEDICINE TEMPLE UNIVERSITY: $30k → 22%JUPITER MEDICAL CENTER FDN INC: $109k → 11%SHRINERS HOSPITALS FOR CHILDREN: $5k → 13%UNIV OF CALIFORNIA SAN DIEGO: $30k → 11%Jupiter Medical Center Foundation Inc: $101k → 11%University of California San Diego: $25k → 11%JUPITER MEDICAL CENTER FDN INC: $83k → 11%JUPITER MEDICAL CENTER FDN INC: $70k → 11%JUPITER MEDICAL CENTER FDN INC: $55k → 11%JUPITER MEDICAL CENTER FDN INC: $44k → 11%JUPITER MEDICAL CENTER FOUNDATION: $22k → 11%JUPITER ELEMENTARY SCHOOL: $9k → 11%FRIENDS OF MACARTHUR STATE PARK: $19k → 11%Jupiter Elementary School: $6k → 11%FRIENDS OF MACARTHUR STATE PARK: $9k → 11%Jupiter Medical Center Foundation Inc: $5k → 11%FRIENDS OF MACARTHUR STATE PARK: $9k → 11%BALDWIN PREP SCHOOL: $6k → 11%BIG DOG RESCUE RNACH: $30k → 11%Big Dog Rescue Ranch: $30k → 11%BIG DOG RESCUE RANCH: $30k → 11%BIG DOG RESCUE RANCH: $29k → 11%BIG DOG RESCUE RANCH: $20k → 11%BIG DOG RESCUE RNACH: $17k → 11%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

NY
MA
IA
PA
CA
VA
DC
GA
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.

93%of every dollar goes to organizations it has funded before.
$1.9M · 27 repeat orgs$151k to everyone else

27 repeat relationships: 13 still active in FY2025, 14 since wound down; 10 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

27
14

Total granted

$1.9M
$53k

Median revenue growth · since first grant

+45%
+67%

Still filing today

44%
14%

New vs renewed · share of each year

In FY2025, 80% of grant dollars renewed an existing relationship; $98k went to new ones.

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

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

’18’20’21’22’23’24’25
AnimalsPhilanthropyHealthEducationEnvironmentScience & TechOther
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

  • THE UNIVERSITY OF FLORIDA FOUNDATION INC
    6× · 2020–2025 · $515k · revenue +31%
  • JM
    Jupiter Medical Center Foundation Inc
    7× · 2018–2025 · $488k · revenue +52%
  • BD
    BIG DOG RANCH RESCUE INC
    2× · 2021–2022 · $47k · revenue +79%

Funded once

  • UO
    UNIVIERSITY OF FLORIDA FOUNDATION
    one grant, 2018 · $30k
  • BP
    BALDWIN PREP SCHOOL
    one grant, 2018 · $6k
  • CS
    CHAPMAN SHCOOL OF SEAMANSHIP
    one grant, 2021 · $3k
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
The Florida Aquarium Inc

The florida aquarium's mission focuses on our shared purpose of a commitment to save marine wildlife, with a vision to be florida's leading conservation-based aquarium. (continued on schedule o)

Animals
2
Mote Marine Laboratory Inc

The advancement of marine and environmental sciences through scientific research, education and public outreach, leading new discoveries, revitalization and sustainability of our oceans and greater public understanding of our marine…

—
3
Phillip and Patricia Frost Museum of Science Inc

Frost science inspires and connects people of all ages and backgrounds to enjoy science and technology, and to better understand ourselves and our world.

Arts & Culture
4
University of Florida Health Corporation

UF Health's mission is to promote health through outstanding and high-quality patient care, innovative and rigorous education in the health professions and biomedical sciences, and high-impact research across the spectrum of basic,…

—
5
Sustainable Fisheries Partnership Foundation

To engage and catalyze global seafood supply chains in rebuilding depleted fish stocks and reducing the environmental impacts of fishing and fish farming.

Animals
6
American Museum of Natural History

The museum's mission statement is: "to discover, interpret, and disseminate - through scientific research and education - knowledge about human cultures, the natural world, and the universe."

Arts & Culture
7
United States Naval Institute

Provide an independent forum for those who dare to read, think, speak, and write to advance the professional, literary, and scientific understanding of sea power and other issues critical to global security.

—
8
Oceana Inc

To advocate for policy changes by governments and corporations in order to preserve ocean life and return the oceans to their former abundance.

Environment
9
Memorial Sloan-Kettering Cancer Center

Leadership in the prevention, treatment, and cure of cancer through excellence, vision and cost effectiveness in patient care, outreach programs, research, and education.

Health
10
University Corporation for Atmospheric Research

See schedule ouniversity corporation for atmospheric research (ucar), on behalf of, and in cooperation with its member university members, is engaged in the management of long-term atmospheric and related research and educational…

Science & Tech
11
Manatee Rescue & Rehabilitation Partnership Inc

To inspire and advance manatee conservation by partnering cooperatively in manatee rescue, rehabilitation, release, and monitoring efforts; improve understanding of manatee biology and health through scientific research; and promote…

Animals
12
The Jackson Laboratory

The purposes of the laboratory are scientific, medical, charitable, and educational. our mission is to discover precise genomic solutions for disease and empower the biomedical community.

Health
How this is measured
The grantee most central to the portfolio’s shape is The University of Florida Foundation Inc; the most unlike its peers is The American Society for the Prevention of Cruelty to Animals. 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

21 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. 21 of the 53 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)
21/21
Grantees still filing
13/21
Grew since first funded

Where the money sits, by cause and then by grantee

LEWIS KATZ SCHOOL OF MEDICINE: $255,000 · OtherLEWIS KATZ SCHOOL OF MEDICINELEWIS KATZ SCHOOL OF MEDICINE TU: $160,000 · OtherLEWIS KATZ SCHOOL OF MEDICINE TULewis Katz School of Medicine Temple University: $130,000 · OtherLewis Katz School of Medicine Temple UniversityBig Dog Rescue Ranch: $109,500 · OtherBig Dog Rescue RanchUNIV OF CALIFORNIA SAN DIEGO: $55,000 · OtherUNIV OF CALIFORNIA SAN DIEGOUNIVIERSITY OF FLORIDA FOUNDATION: $30,100 · Other+30 more: $160,000 · Other+30 moreTHE UNIVERSITY OF FLORIDA FOUNDATION INC: $515,000 · EducationTHE UNIVERSITY OF FLORIDA FOU…ARIZONA STATE UNIVERSITY FOUNDATION FOR A NEW AMERICAN UNIVERSITY: $25,000 · Education+1 more: $5,000 · EducationJupiter Medical Center Foundation Inc: $488,250 · PhilanthropyJupiter Medical Center Foun…+2 more: $12,000 · PhilanthropyFRIENDS OF MACARTHUR BEACH STATE PARK INC: $39,393 · EnvironmentOCEAN CONSERVANCY: $17,000 · EnvironmentBIG DOG RANCH RESCUE INC: $47,192 · AnimalsFurry Friends Humane Inc: $2,000 · AnimalsPeggy Adams Animal Rescue League of the Palm Beaches Inc: $2,000 · Animals+1 more: $1,000 · AnimalsTHE SHRINERS' HOSPITAL FOR CHILDREN: $12,000 · HealthSHRINERS HOSPITALS FOR CHILDREN: $8,000 · HealthCMT Research Foundation Inc: $5,000 · HealthCHARLES F CHAPMAN SCHOOL OF SEAMANSHIP INC: $11,500 · Science & TechLOGGERHEAD MARINELIFE CENTER INC: $5,000 · Science & Tech
Other$899,600Education$545,000Philanthropy$500,250Environment$56,393Animals$52,192Health$25,000Science & Tech$16,500

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

25%50%75%100%$10M$100Mgrantee revenue →↑ funder's share of their budgetTHE UNIVERSITY OF FLORIDA FOUNDATION INC: $515,000 over 6y, 0.1% of budgetJupiter Medical Center Foundation Inc: $488,250 over 7y, 0.3% of budgetBIG DOG RANCH RESCUE INC: $47,192 over 2y, 0.3% of budgetFRIENDS OF MACARTHUR BEACH STATE PARK INC: $39,393 over 5y, 2.0% of budgetARIZONA STATE UNIVERSITY FOUNDATION FOR A NEW AMERICAN UNIVERSITY: $25,000 over 1y, 0.0% of budgetOCEAN CONSERVANCY: $17,000 over 4y, 0.0% of budgetTHE SHRINERS' HOSPITAL FOR CHILDREN: $12,000 over 4y, 0.0% of budgetCHARLES F CHAPMAN SCHOOL OF SEAMANSHIP INC: $11,500 over 5y, 0.2% of budgetSHRINERS HOSPITALS FOR CHILDREN: $8,000 over 2y, 0.0% of budgetRADY CHILDREN'S HOSPITAL FOUNDATION SAN DIEGO: $7,000 over 2y, 0.0% of budgetTHE NATURE CONSERVANCY: $6,000 over 3y, 0.0% of budgetGARY SINISE FOUNDATION: $5,000 over 1y, 0.0% of budgetLOGGERHEAD MARINELIFE CENTER INC: $5,000 over 2y, 0.0% of budgetMALTZ JUPITER THEATRE INC: $5,000 over 1y, 0.0% of budgetCMT Research Foundation Inc: $5,000 over 2y, 0.0% of budgetMassachusetts Institute of Technology: $5,000 over 1y, 0.0% of budgetPROJECT LIFT INC: $3,000 over 2y, 0.0% of budgetPeggy Adams Animal Rescue League of the Palm Beaches Inc: $2,000 over 1y, 0.0% of budgetTHE AMERICAN SOCIETY FOR THE PREVENTION OF CRUELTY TO ANIMALS: $1,000 over 1y, 0.0% of budgetLOXAHATCHEE RIVER HISTORICAL SOCIETY INC: $500 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 THE UNIVERSITY OF FLORIDA FOUNDATION INC ↗
  • Who funds Jupiter Medical Center Foundation Inc ↗
  • Who funds BIG DOG RANCH RESCUE INC ↗
  • Who funds FRIENDS OF MACARTHUR BEACH STATE PARK INC ↗
  • Who funds ARIZONA STATE UNIVERSITY FOUNDATION FOR A NEW AMERICAN UNIVERSITY ↗
  • Who funds OCEAN CONSERVANCY ↗
  • Who funds THE SHRINERS' HOSPITAL FOR CHILDREN ↗
  • Who funds CHARLES F CHAPMAN SCHOOL OF SEAMANSHIP INC ↗
  • Who funds SHRINERS HOSPITALS FOR CHILDREN ↗
  • Who funds RADY CHILDREN'S HOSPITAL FOUNDATION SAN DIEGO ↗
  • Who funds THE NATURE CONSERVANCY ↗
  • Who funds GARY SINISE FOUNDATION ↗
  • Who funds LOGGERHEAD MARINELIFE CENTER INC ↗
  • Who funds MALTZ JUPITER THEATRE INC ↗
  • Who funds CMT Research Foundation Inc ↗
  • Who funds Massachusetts Institute of Technology ↗
  • Who funds PROJECT LIFT INC ↗
  • Who funds Furry Friends Humane 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 FoundationWA3.3× 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 Leo Claire & Robert Adenbaum Foundation funds: left to right is the share of its income from government, bottom to top the share from Leo Claire & Robert Adenbaum 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%25%50%75%100%share of the org’s income from government →median 6%
  • Massachusetts Institute of Technology: 35% of income from government
  • The Shriners' Hospital for Children: 6% of income from government
  • Loxahatchee River Historical Society Inc: 6% of income from government
  • Big Dog Ranch Rescue Inc: 0% of income from government
  • Shriners Hospitals for Children: 0% of income from government
no gov moneyreceives it· size = income
3get no government money at all
4report government grants on their 990 we could not trace to a source (not plotted)
0rely on government for over half their income
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 Leo Claire & Robert Adenbaum Foundation?

Find your warmest path to Leo Claire & Robert Adenbaum 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 53 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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