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Plinth

· Private foundation

Marineau Family 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.

$185k
Granted FY2025still arriving
3
Grants FY2025still arriving
3
States reached
$75k
Largest
01What you fund
0199% classified

What you funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year — across FY20172025.

Arts & Culture$1.6MEducation$668kPhilanthropy$260kScience & Tech$226kYouth Development$200kHealth$50kHuman Services$50kAnimals$30kOther$0
02FY2025 · 3 grants

Where the money goes

Your grants by size, and where they go.

$60,000
Median grant
3
States reached
$784k
Total assets
Largest grants
RecipientAmount
SAN FRANCISCO OPERA$75,000
OPERA AMERICA INC$60,000
Santa Fe Opera$50,000
02The need
03

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.

show:

Your human-services grants (FY21–21, $50k) land where the poverty rate runs at 10%, against an area that typically sits at 11%. 0% of those dollars go to grantees based in above-average-need neighborhoods. Your grants skew toward lower-need ZIPs.

area typical 11%Holy Family Day Home: $50k → 10%0%20%40%50%more need →
grant to an above-average-need area below average· circle size = grant amount

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.

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.

03Your edge
repeat funding

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.

95%of every dollar goes to organizations you’ve funded before.
$3.0M · 13 repeat orgs$145k to everyone else

13 repeat relationships — 3 still active in FY2025, 10 since wound down.

How the two cohorts compare

Re-uppedFunded once

Organizations

13
7

Total granted

$3.0M
$145k

Median revenue growth · since first grant

+4%
+29%

Still filing today

69%
71%

New vs renewed · share of each year

In FY2025, 100% of grant dollars renewed an existing relationship; $0 went to new ones.

50%100%’17’18’19’20’21’22’23’24’25
RenewedFirst-time

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

’17’18’19’20’21’22’23’24’25
Arts & CultureEducationHuman ServicesAnimalsCivil RightsOther

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

  • TS
    THE SANTA FE OPERA
    8× · 2018–2025 · $800k · revenue +25%
  • GEORGETOWN UNIVERSITY
    6× · 2017–2022 · $300k · revenue +47%
  • University of San Francisco
    5× · 2017–2024 · $285k · revenue +14%

Funded once

  • HF
    HOLY FAMILY DAY HOMEgraduated
    one grant, 2021 · $50k · revenue +29%
  • AC
    A CHANCE OF A LIFETIMEgraduated
    one grant, 2022 · $30k · revenue +77%
  • MS FOUNDATION FOR WOMEN INC
    one grant, 2024 · $25k · revenue -48%

Repeat = funded in two or more distinct years; growth and survival are read from each grantee’s own subsequent IRS filings.

04Your field

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.

1
Opera Santa Barbara

See schedule 0founded in 1994, opera santa barbara is the signature provider of professional opera on the california central coast. we aspire to be a cultural leader in the santa barbara region, voicing and advancing our community's spirit…

Arts & Culture
2
Los Angeles Opera Company

To serve the public by producing world-class opera that preserves, promotes and advances the art form while embodying the diversity, spirit and artistic sensibility unique to los angeles. we envision an engaged and enlightened community in…

Arts & Culture
3
San Diego Opera Association

Mission: the mission of san diego opera is to deliver exceptional performances and exciting, accessible programs to diverse audiences, focusing on community partnerships, and the transformative and expressive power of the human voice. as…

Arts & Culture
4
Arizona Opera Company

Arizona opera elevates the transformative power of storytelling through music - cultivating community and strengthening a state and people as adventurous and diverse as the place they call home.

Arts & Culture
5
Lyric Opera of Chicago

We believe in the life-changing, transformational, revelatory power of great art and opera. Lyric Opera of Chicago exists to provide a broad, deep, and relevant cultural service to the Chicago region and the nation, and to advance the…

Arts & Culture
6
Chicago Opera Theater

Chicago opera theater expands the tradition of opera as a living art form by engaging lovers of music and storytelling through innovative experiences, predominantly of new and rarely performed works.

Arts & Culture
7
Hawaii Symphony Orchestra

To present the highest-quality performances of great music, bringing national and international distinction to the orchestra and its community; to delight and educate audiences of all ages and backgrounds, and enhance the cultural vitality…

Arts & Culture
8
San Francisco Symphony

The san francisco symphony exists to inspire and serve audiences and communities throughout the bay area and the world through the power of musical performance.

Arts & Culture
9
Foundation for Modern Opera
10
San Francisco Museum of Modern Art

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,…

Arts & Culture
11
Opera Philadelphia

To be philadelphia's professional producer of quality grand opera, producing a diverse range of repertoire featuring international artists alongside rising young singers, and to produce educational programs which nurture the future and…

Arts & Culture
12
New York City Opera

New york city opera was famously dubbed "the people's opera" by mayor fiorello laguardia at its founding in 1943. more than 80 years later, city opera continues its historic mission to inspire audiences with innovative and theatrically…

Arts & Culture

For reference, the grantee most central to the portfolio’s shape is The Santa Fe Opera and the most unlike its peers is A Chance of a Lifetime. 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

15 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 20172025, not grant rows in a single year — so this will not match the grant count on the cover. 15 of the 21 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.

0
Load-bearing (≥25% of a budget)
1
Early backer (in before they grew)
15/15
Grantees still filing
9/15
Grew since you first funded

Where your money sits — by cause, then by grantee

THE SANTA FE OPERA — $800,000 · Arts & CultureTHE SANTA FE OPERAOPERA AMERICA INC — $275,000 · Arts & CultureOPERA AMERICA INCTHE EXPLORATORIUM — $226,000 · Arts & CultureTHE EXPLORATORIUMSAN FRANCISCO OPERA ASSOCIATION — $225,000 · Arts & CultureSAN FRANCISCO OPERA ASSOCIATION+1 more — $10,000 · Arts & CultureGEORGETOWN UNIVERSITY — $300,000 · EducationGEORGETOWN UNIVERSITYSAN FRANCISCO CONSERVATORY OF MUSIC — $300,000 · EducationSAN FRANCISCO CONSERVATORY OF MU…University of San Francisco — $285,000 · EducationUniversity of San Francisco+1 more — $20,000 · EducationWOMEN'S FOUNDATION OF CALIFORNIA — $250,000 · OtherWOMEN'S FOUNDATION OF…HOLY FAMILY DAY — $200,000 · OtherHOLY FAMILY DAYPLANNED PARENTHOOD — $50,000 · OtherPLANNED PARENTHOODIMMACULATE CONCEPTION ACADEMY — $42,500 · OtherIMMACULATE CONCEPTION…NEW MEXICO SCHOOL OF ARTS — $30,500 · Other+4 more — $40,000 · Other+4 moreHOLY FAMILY DAY HOME — $50,000 · Human ServicesA CHANCE OF A LIFETIME — $30,000 · AnimalsMS FOUNDATION FOR WOMEN INC — $25,000 · Civil Rights
Arts & Culture$1,536,000Education$905,000Other$613,000Human Services$50,000Animals$30,000Civil Rights$25,000

Each org by its size and your share of it — top-left is where you’re load-bearing

25%50%75%100%$1.0M$10M$100Mgrantee revenue →↑ your share of their budgetTHE SANTA FE OPERA — $800,000 over 8y, 0.5% of budgetGEORGETOWN UNIVERSITY — $300,000 over 6y, 0.0% of budgetSAN FRANCISCO CONSERVATORY OF MUSIC — $300,000 over 6y, 0.1% of budgetUniversity of San Francisco — $285,000 over 5y, 0.0% of budgetOPERA AMERICA INC — $275,000 over 6y, 0.9% of budgetWOMEN'S FOUNDATION OF CALIFORNIA — $250,000 over 5y, 0.6% of budgetTHE EXPLORATORIUM — $226,000 over 5y, 0.1% of budgetSAN FRANCISCO OPERA ASSOCIATION — $225,000 over 3y, 0.1% of budgetHOLY FAMILY DAY HOME — $50,000 over 1y, 1.0% of budgetA CHANCE OF A LIFETIME — $30,000 over 1y, 12% of budgetMS FOUNDATION FOR WOMEN INC — $25,000 over 1y, 0.0% of budgetNEW MEXICO SCHOOL FOR THE ARTS - ARTS INSTITUTE — $20,000 over 2y, 0.3% of budgetOPERA SAN JOSE INCORPORATED — $10,000 over 1y, 0.2% of budgetFUTURES WITHOUT VIOLENCE — $10,000 over 1y, 0.1% of budgetCHICAGO FOUNDATION FOR WOMEN — $10,000 over 1y, 0.2% of budget
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 THE SANTA FE OPERA
  • Who funds GEORGETOWN UNIVERSITY
  • Who funds SAN FRANCISCO CONSERVATORY OF MUSIC
  • Who funds University of San Francisco
  • Who funds OPERA AMERICA INC
  • Who funds WOMEN'S FOUNDATION OF CALIFORNIA
  • Who funds THE EXPLORATORIUM
  • Who funds SAN FRANCISCO OPERA ASSOCIATION
  • Who funds HOLY FAMILY DAY HOME
  • Who funds A CHANCE OF A LIFETIME
  • Who funds MS FOUNDATION FOR WOMEN INC
  • Who funds NEW MEXICO SCHOOL FOR THE ARTS - ARTS INSTITUTE
  • Who funds OPERA SAN JOSE INCORPORATED
  • Who funds FUTURES WITHOUT VIOLENCE
  • Who funds CHICAGO FOUNDATION FOR WOMEN

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.

American Endowment FoundationOH11.2× affinity5 shared granteesties to 7 of 7Hover any node to trace its alignments.Compare side by side →

Open a dossier: American Endowment Foundation · Vanguard Charitable Endowment Program · Morgan Stanley Global Impact Funding Trust Inc · National Philanthropic Trust · Donor Advised Charitable Giving Inc · American Online Giving Foundation 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 Marineau 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.

2024
202122232425
no gov · 00%1%4%8%15%your share of their income ↑0%19%38%56%75%share of the org’s income from government
    no gov moneyreceives it· size = income
    0get no government money at all
    3report government grants on their 990 we could not trace to a source (not plotted)
    0rely on government for over half their income
    ⤢ axis zoomed · 0–75%
    typical government reliance, FY2025

    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.

    On method. Every financial figure here is read directly from IRS e-file XML — your own 990/990-PF and the multi-year returns of the 21 grantees we resolved across every year we hold, several hundred filings in all (a different count from the grant rows on the cover, which are one fiscal year)— each linked to its source. Grantee achievements and outcomes are each organization’s own program-service reporting (Form 990, Part III); we read these as association with sustained funding — the foundation is one of several forces — suppress low-confidence name matches rather than guess, and say so where a figure rests on a single grant or filing. Not everything on this page is a filed figure, and the difference matters. Filed is what you reported on your 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. How we build these →

    Generated from your IRS Form 990-PF e-file return for fiscal year 2025, released 2025. Filings run roughly 12–24 months behind; figures are dated accordingly.

    Source object · view filing

    More from the funding graph