· Private foundation
Leighton a Rosenthal Family Foundation
Its FY2025 filing reports that it accepted unsolicited grant applications.
What you funded, over time
Every grant placed by its stated purpose and the recipient’s mission, by year — across FY2017–2025.
Where the money goes
Your grants by size, and where they go.
By grant size · FY2025
- Under $10k2 grants · $10k
- $10k–50k7 grants · $135k
- $50k–250k1 grant · $50k
| Recipient | Amount |
|---|---|
| HATHAWAY BROWN SCHOOL | $50,000 |
| KENT DENVER SCHOOL | $45,000 |
| UNITED WAY SERVICES - PALM BEACH | $20,000 |
| BOSTON CHILDREN'S HOSPITAL FOUNDATION | $20,000 |
| THE METROPOLITAN MUSEUM OF ART | $15,000 |
| NORTON MUSEUM OF ART | $15,000 |
| ST JUDE CHILDREN'S RESEARCH HOSPITAL | $10,000 |
| THE FRICK COLLECTION | $10,000 |
| PEGGY ADAMS ANIMAL RESCUE | $5,000 |
| GLADES ACADEMY | $5,000 |
Do your dollars go where the need is?
Each grant placed by the hardship in its grantee’s ZIP, then read against the area’s typical level.
Dollar for dollar, your grants (FY17–25) land where the poverty rate runs at 14%, against an area that typically sits at 11%. 84% of your dollars go to grantees based in above-average-need neighborhoods. Most of your grants land in higher-need ZIPs.
Matched: human-services grants are those whose grantee’s IRS cause code is Human Services. Placed by people below the poverty linein the grantee’s ZIP, averaged from the tracts in that ZIP; grantee ZIP can differ from where services are delivered.
Which US states your grants reach
US grants placed by each grantee’s ZIP, which can differ from where services are actually delivered. Need from public data — U.S. Census/ACS, CDC PLACES, Eviction Lab, USDA — shown as context about the area, never attributed to your giving.
Where the work is directed
The same grants, placed two ways — where each recipient sits, and where its stated purpose earmarks the money.
About 11% of Leighton a Rosenthal Family Foundation’s grant dollars are earmarked, by their stated purpose, for a different county than the recipient’s own address — money that lands at a nonprofit in one place but is meant to do its work in another. Read by recipient address, 45% of the giving stays in OH; read by stated purpose it is 36% — less of the work is directed home than the recipients' locations suggest.
Recipient view: each grant at its grantee’s ZIP, mapped to a county. Directed view: each grant at the county its stated purpose names, falling back to the recipient’s county when the purpose names no place; US grants only. A county shows only if it carries the top 95% of that view’s dollars. Purposes are read from the foundation’s own 990 grant descriptions.
Who you back again
Which organizations you funded more than once, and which you funded a single time. Each grantee is matched to its own filings.
17 repeat relationships — 8 still active in FY2025, 9 since wound down; 2 grantees were first funded in FY2025 (too recent to call).
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, 72% of grant dollars renewed an existing relationship; $55k went to new ones.
Where new relationships form · theme of each grantee’s first grant
First-time = a grantee’s first year in your filing window; renewed = funded in an earlier year too. As a portfolio matures the renewed share naturally climbs — once funded, an org stays “renewable” — so the signal is the years that buck it (a new-grantee intake wave). 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
- TMThe Musical Arts Association3× · 2017–2020 · $120k · revenue +45%
- MMMETROPOLITAN MUSEUM OF ART7× · 2019–2025 · $80k · revenue +76%
- TPThe Preservation Foundation of Palm Beach Inc6× · 2017–2023 · $60k · revenue +279%
Funded once
- CMCLEVELAND MUSEUM OF ARTgraduatedone grant, 2017 · $50k · revenue +71%
- KDKENT DENVER COUNTRY DAY SCHOOLgraduatedone grant, 2023 · $25k · revenue +69%
- IGIndividual grant recipientone grant, 2019 · $25k
Repeat = funded in two or more distinct years; growth and survival are read from each grantee’s own subsequent IRS filings.
The map has a center of gravity: the average direction from the rest of the sector toward the organizations the foundation funds — the shape of its giving. Scoring every nonprofit along that direction surfaces the ones that look most like the portfolio. These are the closest matchesthat aren’t grantees — a resemblance in what they say they do, not a recommendation.
The philadelphia museum of art - in partnership with the city, the region, and art museums around the globe - seeks to preserve, enhance, interpret, and extend the reach of its great collection in particular, and the visual arts in…
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."
See Form 990, Part I, Line 1, Description of Organization Mission.
The museum of fine arts, houston serves as a welcoming and inclusive place for all people, connecting the communities of houston with diverse histories of art spanning 6,000 years and six continents. through our permanent collections,…
Committed to innovation, the solomon r. guggenheim foundation (the "foundation") collects, (continued on schedule o)
The institute for advanced study (the institute) is one of the world's leading centers for theoretical research and intellectual inquiry. see schedule o.
The baltimore museum of art connects art to baltimore and baltimore to the world, embodying a commitment to artistic excellence and social equity in every decision from art presentation, interpretation, and collecting, to the composition…
The huntington library, art museum, and botanical gardens shares its world-renowned collections to support scholarship, foster learning, inspire creativity, and offer transformative experiences for diverse audiences.
Munson-williams-proctor arts institute (mwpai) is a fine arts center dedicated to serving diverse audiences by advancing the appreciation, understanding, and enjoyment of the arts. the art institute aims to promote interest and…
Dickinson college provides a useful, innovative and interdisciplinary education in the liberal arts and sciences to prepare students to lead rich and fulfilling lives of engaged global citizenship
We harness the power of plants for humankind and share the joy and beauty of tropical gardening with everyone. fairchild tropical botanic garden is a museum of tropical plants within a world famous, 83-acre designed landscape. it was…
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.
For reference, the grantee most central to the portfolio’s shape is The Frick Collection and the most unlike its peers is Dana-Farber Cancer Institute Inc. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
17 grantees tracked through their own filings, 2017–2025.
Each one resolved to its own IRS returns and tracked year by year — your grant beside their revenue from every source. Association, dated; never a causal claim.
Counted here: distinct organizations you funded across 2017–2025, not grant rows in a single year — so this will not match the grant count on the cover. 17 of the 31 grantees resolved in that span have returns of their own we could reconcile; the rest are funded organizations whose filings we could not track year by year.
Where your money sits — by cause, then by grantee
Each org by its size and your share of it — top-left is where you’re load-bearing
Go grantee by grantee — a decade per org, and how each moved after you funded them
A decade per grantee — revenue shaded, your grants as bars, all rows on one timeline.
- Who funds HATHAWAY BROWN SCHOOL ↗
- Who funds VANGUARD CHARITABLE ENDOWMENT PROGRAM ↗
- Who funds The Musical Arts Association ↗
- Who funds METROPOLITAN MUSEUM OF ART ↗
- Who funds The Preservation Foundation of Palm Beach Inc ↗
- Who funds NORTON MUSEUM OF ART INC ↗
- Who funds GLADES ACADEMY INC ↗
- Who funds CLEVELAND MUSEUM OF ART ↗
- Who funds KENT DENVER COUNTRY DAY SCHOOL ↗
- Who funds THE ANIMAL MEDICAL CENTER ↗
- Who funds Dana-Farber Cancer Institute Inc ↗
- Who funds The Frick Collection ↗
- Who funds MAKE-A-WISH FOUNDATION OF AMERICA ↗
- Who funds BRIMMER AND MAY SCHOOL ↗
- Who funds ST JUDE CHILDREN'S RESEARCH HOSPITAL INC ↗
- Who funds Glades Academy Foundation Inc ↗
- Who funds BATTIER TAKE CHARGE FOUNDATION ↗
The grantmakers whose grantees overlap with yours far more than size alone predicts. Each orbits closer the stronger the alignment; the arcs between them show where they also fund each other. Here it reads as a tightly interlocked camp — most of these funders back each other's grantees too.
Open a dossier: National Philanthropic Trust · Vanguard Charitable Endowment Program · Donor Advised Charitable Giving Inc · Fidelity Investments Charitable Gift Fund
Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. A research starting point: overlap is association, not proof of shared intent.
Government reliance of your grantees
Every dot is one organization Leighton a Rosenthal Family Foundation funds. Left–right is the share of its income from government; up–down is the share from you. Bigger dots raise more. Filter to federal, a single department, or state — and drag the year to watch it move.
- Dana-Farber Cancer Institute Inc — 7% of income from government
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 your grant caused the public funding. Coverage is precision-first — a floor, not 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 12–24 months.
Warm introductions · Powered by PlinthPlus
How do I get to Leighton a Rosenthal Family Foundation?
Find your warmest path to Leighton a Rosenthal Family 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.