· Private foundation
The Louis B Mayer 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.
What you funded, over time
Every grant placed by its stated purpose and the recipient’s mission, by year — across FY2020–2025.
Where the money goes
Your grants by size, and where they go.
By grant size · FY2025
- Under $10k3 grants · $12k
- $10k–50k8 grants · $229k
- $50k–250k6 grants · $343k
| Recipient | Amount |
|---|---|
| George Eastman Museum | $85,000 |
| American Cinematheque | $57,000 |
| MD Anderson Cancer Center | $51,000 |
| Cedars-Sinai Medical Center | $50,000 |
| George Eastman Museum | $50,000 |
| Northeast Historic Film | $50,000 |
| Association of Moving Image Archivi | $47,500 |
| UC Berkeley Art MuseumPacific Film | $45,000 |
| MD Anderson Cancer Center | $40,000 |
| Cincinnati Children's Hospital | $30,000 |
| UC Berkeley Art MuseumPacific Film | $25,000 |
| Arts Resources in Collaboration Inc | $20,000 |
| Columbia University | $11,000 |
| George Eastman Museum | $10,000 |
| Arts Resources in Collaboration Inc | $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 (FY20–25) land where the poverty rate runs at 13%, against an area that typically sits at 12%. 72% 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 9% of The Louis B Mayer 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, 38% of the giving stays in NY; read by stated purpose it is 35% — 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.
12 repeat relationships — 6 still active in FY2025, 6 since wound down; 3 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, 73% of grant dollars renewed an existing relationship; $155k 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
- GEGEORGE EASTMAN MUSEUM6× · 2020–2025 · $707k · revenue +47%
Dana-Farber Cancer Institute Inc5× · 2020–2024 · $375k · revenue +73%- MCMIAMI CITY BALLET INC4× · 2020–2023 · $327k · revenue +11%
Funded once
- MSMt Sinai Medical Centerone grant, 2024 · $50k
- FPFILM PRESERVATION SOCIETY INCone grant, 2023 · $39k · revenue -24%
- PTPAUL TAYLOR DANCE FOUNDATION INCgraduatedone grant, 2020 · $25k · revenue +83%
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.
See schedule omuseum of the moving image (momi) is the only museum in the u.s. that explores the central technology of the present moment.screens are all around us. we use them to educate, entertain, and communicate. the moving…
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."
The academy museum of motion pictures advances the understanding, celebration, and preservation of cinema through inclusive and accessible exhibitions, screenings, programs, initiatives, and collections. welcoming visitors from los angeles…
See schedule osfmoma believes the art of our time is vital and shares it with passion and purpose, and that art and the creative process can open minds and help build a better world. for that reason, we assemble unparalleled collections,…
The museum of the city of new york fosters understanding of the distinctive nature of urban life in the world's most influential metropolis. it engages visitors by celebrating, documenting, and interpreting the city's past, present, and…
The phillips collection is the oldest museum of modern and contemporary art in the u.s. in addition to presentation of works from the permanent collection and special exhibitions, the museum maintains active educational, academic,…
Chm decodes technology - its computing past, digital present, and future impact on humanity.
The metropolitan museum of art collects, studies, conserves, and presents significant works of art across all times and cultures in order to connect people to creativity, knowledge, and ideas.
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…
Home to the art and legacy of the american painter clyfford still, we invite all to explore the potential of individual creative endeavor.
For reference, the grantee most central to the portfolio’s shape is George Eastman Museum and the most unlike its peers is Film Preservation Society Inc. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
13 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. 13 of the 20 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 GEORGE EASTMAN MUSEUM ↗
- Who funds Dana-Farber Cancer Institute Inc ↗
- Who funds MIAMI CITY BALLET INC ↗
- Who funds VANGUARD CHARITABLE ENDOWMENT PROGRAM ↗
- Who funds Museum of Modern Art ↗
- Who funds ARTS RESOURCES IN COLLABORATION INC ↗
- Who funds CEDARS-SINAI MEDICAL CENTER ↗
- Who funds AMERICAN CINEMATHEQUE ↗
- Who funds NORTHEAST HISTORIC FILM ↗
- Who funds ASSOCIATION OF MOVING IMAGE ARCHIVISTS ↗
- Who funds FILM PRESERVATION SOCIETY INC ↗
- Who funds PAUL TAYLOR DANCE FOUNDATION INC ↗
- Who funds THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK ↗
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: Donor Advised Charitable Giving Inc · Fidelity Investments Charitable Gift Fund · Amazonsmile Foundation
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 The Louis B Mayer 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 or a single department — 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 The Louis B Mayer Foundation?
Find your warmest path to The Louis B Mayer 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.