· Private foundation
The Mazursky Family Foundation
Its FY2023 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 FY2017–2023.
Where the money goes
Your grants by size, and where they go.
By grant size · FY2023
- Under $10k17 grants · $46k
- $10k–50k12 grants · $209k
| Recipient | Amount |
|---|---|
| LA JOLLA PLAYHOUSE | $25,000 |
| SUN VALLEY WRITERS' CONFERENCE | $24,200 |
| SUN VALLEY FILM FESTIVAL | $22,000 |
| UTAH FILM CENTER | $21,000 |
| THE PAINTED TURTLE | $20,000 |
| KENYON COLLEGE | $20,000 |
| THERE WITH CARE | $19,000 |
| EBMRF | $12,800 |
| EARTH ISLAND INSTITUTE | $12,500 |
| HOLOCAUST MUSEUM | $12,000 |
| JONSSON CANCER CENTER FOUNDATION | $10,000 |
| PLASTIC POLLUTION COALITION | $10,000 |
| FRACTURED ATLAS | $8,000 |
| BEN'S LIGHTHOUSE | $5,000 |
| CITY OF HOPE | $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.
Your human-services grants (FY17–23, $54k) land where the poverty rate runs at 12%, against an area that typically sits at 10%. 79% of those 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 15% of The Mazursky 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, 51% of the giving stays in CA; 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.
And the relationships you keep tend to grow: grantees you re-up on have seen median revenue of +59% since the first grant, against 0% for the ones you funded once.
31 repeat relationships — 15 still active in FY2023, 16 since wound down; 13 grantees were first funded in FY2023 (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 FY2023, 63% of grant dollars renewed an existing relationship; $94k 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
KENYON COLLEGE4× · 2019–2023 · $45k · revenue +37%
Earth Island Institute Inc3× · 2021–2023 · $41k · revenue +78%- UFUTAH FILM CENTER2× · 2021–2023 · $23k · revenue +77%
Funded once
- IWINTERNATIONAL WILDERNESS LEADERSHIP FOUNDATION INCone grant, 2017 · $25k · revenue -14%
- CVCREATIVE VISIONSone grant, 2022 · $11k
- BHBLUE HERON FOUNDATIONone grant, 2022 · $10k · revenue -56%
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.
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For reference, the grantee most central to the portfolio’s shape is Edward Charles Foundation and the most unlike its peers is Earth School Hawaii. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
For each theme you fund, this compares how the sector’s money is shifting with how your own giving is shifting.
Sector change and giving change are each shown relative to their own range, growing (right) or shrinking (left); both normalized, so inflation isn’t mistaken for growth.
Your grantees are a median of 26 years old; the field is 14. You back the established end — and your money leans older still.
The field is 24% startups (under 5 years old) — 5% of your grantees by number, and just 3% of your money.
The orgs you fund almost never close — 0.0% lost their exemption, against 14% of the field you don’t fund.
Age = years since IRS exemption (a founding proxy). “Closed” = auto-revocation for 3 years of non-filing — a floor on closure, not proof, and bigger established orgs lapse least. Association, not causation.
63 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. 63 of the 92 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 SUN VALLEY WRITERS' CONFERENCE INC ↗
- Who funds KENYON COLLEGE ↗
- Who funds Earth Island Institute Inc ↗
- Who funds THE PAINTED TURTLE ↗
- Who funds THEATER & ARTS FOUNDATION OF SAN DIEGO COUNTY DBA LA JOLLA PLAYHOUSE ↗
- Who funds INTERNATIONAL WILDERNESS LEADERSHIP FOUNDATION INC ↗
- Who funds THERE WITH CARE ↗
- Who funds UTAH FILM CENTER ↗
- Who funds SUN VALLEY FILM FESTIVAL INC ↗
- Who funds PHASE ONE FOUNDATION ↗
- Who funds GEFFEN PLAYHOUSE INC ↗
- Who funds THE COLORADO COLLEGE ↗
- Who funds THE JONSSON CANCER CENTER FOUNDATION ↗
- Who funds HOLOCAUST MUSEUM LA ↗
- Who funds Earth School Hawaii ↗
- Who funds BLUE HERON FOUNDATION ↗
- Who funds BENS LIGHTHOUSE INC ↗
- Who funds From The Heart Productions ↗
- Who funds WOMEN MAKE MOVIES INC ↗
- Who funds FRACTURED ATLAS INC ↗
- Who funds OCEANA INC ↗
- Who funds A SENSE OF HOME ↗
- Who funds HARVARD-WESTLAKE SCHOOL ↗
- Who funds ARTISTS FOR PEACE AND JUSTICE ↗
- Who funds New York University ↗
- Who funds CENTER FOR THE STUDY OF YOUNG PEOPLE IN GROUPS ↗
- Who funds The Foundation for Radiance ↗
- Who funds WATTS LABOR COMMUNITY ACTION COMMITTEE ↗
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: Silicon Valley Community Foundation · California Community Foundation · Jewish Community Foundation of Los Angeles · Cedars-Sinai Medical Center · Liberty Hill Foundation · Conrad N Hilton Foundation · National Philanthropic Trust · Paypal Charitable Giving Fund · American Endowment Foundation · Jpmorgan Chase Foundation · Vanguard Charitable Endowment Program · The Blackbaud Giving 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 The Mazursky 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 or a single department — and drag the year to watch it move.
- Portland Institute for Contemporary Art — 5% of income from government
- Martha's Vineyard Film Society Inc — 2% of income from government
- Boston Foundation Inc — 0% 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 Mazursky Family Foundation?
Find your warmest path to The Mazursky 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.