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Plinth

· Private foundation

Seniel & Dorothy Ostrow 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.

$53k
Granted FY2025still arriving
29
Grants FY2025still arriving
7
States reached
$7k
Largest
01What you fund
0186% classified

What you funded, over time

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

Health$178kArts & Culture$129kCivil Rights$116kHuman Services$21kAnimals$14kEnvironment$13kEducation$12kInternational$7kOther$0
02FY2025 · 29 grants

Where the money goes

Your grants by size, and where they go.

$1,000
Median grant
7
States reached
$1.3M
Total assets
Largest grants
RecipientAmount
OVERTONE INDUSTRIES$7,000
LA OPERA FOUNDATION$7,000
OPERA AMERICA$5,000
BETH MORRISISON PROJECTS$4,500
CENTER THEATRE GROUP$3,500
THE GLIMMERGLASS OPERA$2,500
CENTRAL CITY OPERA$2,000
THEATRE COMMUNICATIONS GROUP$2,000
THE TREVOR PROJECT$2,000
ACTOR FUND$2,000
LANGE FOUNDATION$1,500
WASHINGTON NATIONAL OPERA$1,500
LOVE JOY FOUNDATION$1,000
OPERA SANTA BARBARA$1,000
BROADWAY CARES$1,000
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 (FY17–25, $12k) land where the poverty rate runs at 13%, against an area that typically sits at 11%. 73% of those dollars go to grantees based in above-average-need neighborhoods. Most of your grants land in higher-need ZIPs.

area typical 11%GIRL TALK FOUNDATION: $1k → 10%GIRL TALK FOUNDATION INC: $1k → 10%GIRL TALK FOUNDATION: $1k → 10%RIGHT TO BE: $1k → 20%AMERICAN RED CROSS: $3k → 14%STEP UP ON SECOND: $500 → 14%DREAM STREET FOUNDATION: $250 → 14%LANGE FOUNDATION: $2k → 14%LANGE FOUNDATION: $2k → 14%LANGE FOUNDATION: $500 → 14%LANGE FOUNDATION: $500 → 14%LANGE FOUNDATION: $500 → 14%LANGE FOUNDATION: $250 → 14%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.

Which US states your grants reach

MT
IL
NY
MA
OR
NJ
CT
CA
CO
VA
MD
AZ
TN
NC
DC
AL
GA
TX
FL

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.

86%of every dollar goes to organizations you’ve funded before.
$478k · 56 repeat orgs$81k to everyone else

And the relationships you keep tend to grow: grantees you re-up on have seen median revenue of +46% since the first grant, against +9% for the ones you funded once.

56 repeat relationships — 22 still active in FY2025, 34 since wound down; 5 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

56
68

Total granted

$478k
$69k

Median revenue growth · since first grant

+46%
+9%

Still filing today

54%
46%

New vs renewed · share of each year

In FY2025, 77% of grant dollars renewed an existing relationship; $12k 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 & CultureHealthHuman ServicesCivil RightsEducationInternationalOther

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

  • SM
    SOLVE ME CFS INITIATIVE INC
    4× · 2017–2020 · $35k · revenue +16%
  • BM
    BETH MORRISON PROJECTS INC
    6× · 2017–2025 · $18k · revenue +74%
  • OA
    OPERA AMERICA INC
    5× · 2020–2025 · $13k · revenue +47%

Funded once

  • KF
    KIF1A FOUNDATION
    one grant, 2020 · $12k
  • LA
    LOS ANGELES OPERA COMPANY
    one grant, 2017 · $4k · revenue +16%
  • AN
    American National Red Cross & Its Constituent Chapters and Branches
    one grant, 2018 · $3k · revenue +9%

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
Academy of Television Arts and Sciences

The Television Academy is dedicated to celebrating excellence, innovation and the advancement of the telecommunications arts and sciences through recognition, education and leadership, while fostering a diverse, inclusive and accessible…

2
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
3
Internet Society Foundation

At the internet society foundation, we focus on funding initiatives that strengthen the internet in function and reach so that it can effectively serve all people. our work advances the vision of the internet society (isoc): the internet…

International
4
United States Telecom Association

See schedule oustelecom exists to ensure members can compete, grow and thrive to build a world where families, enterprises and communities are connected through the power of broadband.our member companies have committed a considerable…

5
The California Channel

To distribute public affairs and other educational information in order to create an electronic bridge between californians and their public officials, and, in the process educate a new generation of voting citizens and civic leaders who…

6
American Association for the Advancement of Science

Advance science, engineering, and innovation throughout the world for the benefit of all. the world's largest multidisciplinary scientific society and a leading publisher of cutting-edge research through its science family of journals,…

Science & Tech
7
The American Theatre Guild

The american theatre guild is dedicated to providing the experience of live theatre to foster passion, inspire creativity and empower youth within our communities.

Arts & Culture
8
Altamed Health Services Corporation

To eliminate disparities in health care access and outcomes by providing superior quality health and human services through an integrated world-class delivery system for latino, multi-ethnic underserved communities in southern california.

Health
9
Air Transport Association of America Inc

Airlines for america (a4a) vigorously advocates for america's airlines as models of safety, customer service, and environmental responsibility; and as the indispensable network that drives our nation's economy and global…

10
The Water Research Foundation

The purpose of the water research foundation (wrf) is a definitive research organization to advance the science of all things water to better meet the evolving needs of its subscribers and the water sector. to engage exclusively in…

Environment
11
National Opinion Research Center

See schedule onorc at the university of chicago conducts research and data science on critical societal issues to guide decision-making and the development of programs and public policy. our experts identify relationships and trends, and…

Social Science
12
American Gas Association

American gas association's (the association) mission is to develop and advocate for informed, innovative, and durable policy that fulfills our nation's energy needs, environmental aspirations and economic potential. we are committed to…

For reference, the grantee most central to the portfolio’s shape is The Actors' Fund of America and the most unlike its peers is A Glimmer of Hope Foundation. 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.

← shrinkinggrowing →↓ leaning in → pulling backsteadyCommunity FoundationsEnvironmental Conservation …Orchestra and Ensemble Perf…Pregnancy Support ServicesAnimal Rescue and ShelterYouth Mentoring ProgramsYouth Sports ProgramsCancer Support ServicesPolicy Research and AdvocacyHealth Access Advocacy and …
the sector your giving your giving is ahead of the sector the sector’s ahead of you· dot size = how much the theme matters to each side
Ordered by the change in your giving — leaning in on top, pulling back at the bottom. The bar between the two dots is how out of step you are with the sector. Hover any row for detail.

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 37 years old; the field is 14. You back the established end — and your money leans older still.

THE FIELDby orgYOUR GRANTEESby number24%0%<5yr15%3%5–10yr20%12%10–20yr17%31%20–35yr11%25%35–55yr13%30%55yr+
THE FIELDby orgYOUR MONEYby value24%0%<5yr15%6%5–10yr20%14%10–20yr17%32%20–35yr11%31%35–55yr13%18%55yr+

The field is 24% startups (under 5 years old) — 0% of your grantees by number, and just 0% of your money.

Closures · last 5 years

The orgs you fund almost never close 1% lost their exemption, against 14% of the field you don’t fund.

orgs you fund
1%1/68
the rest of the field
14%
26,002/186,910

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.

04the grantee network

68 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. 68 of the 131 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)
10
Early backer (in before they grew)
66/68
Grantees still filing
48/68
Grew since you first funded

Where your money sits — by cause, then by grantee

ACLU FOUNDATION — $105,000 · OtherACLU FOUNDATIONPLANNED PARENTHOOD — $45,500 · OtherPLANNED PARENTHOODSOLVE ME CFS INITIATIVE INC — $35,100 · OtherSOLVE ME CFS INITIATIVE INCKIF1A FOUNDATION STRIPE — $32,285 · OtherKIF1A FOUNDATION STRIPELA OPERA FOUNDATION — $20,570 · Other+84 more — $180,069 · Other+84 moreBETH MORRISON PROJECTS INC — $17,578 · Arts & CultureBETH MORRISON…OPERA AMERICA INC — $13,000 · Arts & CultureOPERA AMERICA…OPERA SANTA BARBARA — $8,030 · Arts & CultureOPERA SANTA B…Overtone Industries — $7,000 · Arts & CultureOvertone Indu…CENTER THEATRE GROUP OF LOS ANGELES — $5,500 · Arts & CultureCENTER THEATR…GLIMMERGLASS OPERA THEATRE INC — $4,500 · Arts & CultureGLIMMERGLASS …WASHINGTON NATIONAL OPERA — $4,000 · Arts & CultureWASHINGTON NA…LOS ANGELES OPERA COMPANY — $3,500 · Arts & CultureOPERA ORLANDO INC — $2,510 · Arts & Culture+4 more — $3,750 · Arts & Culture+4 moreKIF1AORG INC — $11,050 · HealthOUR HOUSE GRIEF SUPPORT CENTER — $4,010 · HealthVENICE FAMILY CLINIC — $3,500 · HealthTHE LOS ANGELES FREE CLINIC — $1,500 · HealthBLOOD CANCER UNITED INC — $1,100 · Health+6 more — $2,000 · HealthTREVOR PROJECT INC — $8,500 · Civil RightsEQUAL JUSTICE INITIATIVE — $2,500 · Civil RightsTHE CENTER FOR REPRODUCTIVE RIGHTS INC — $2,500 · Civil RightsHUMAN RIGHTS FOUNDATION INC — $2,000 · Civil Rights+2 more — $500 · Civil RightsLANGE FOUNDATION — $4,750 · Human ServicesGIRL TALK FOUNDATION — $3,280 · Human ServicesAmerican National Red Cross & Its Constituent Chapters and Branches — $2,500 · Human ServicesRIGHT TO BE INC — $1,000 · Human ServicesSTEP UP ON SECOND STREET INC — $500 · Human Services+1 more — $250 · Human ServicesThe Florida State University Foundation Inc — $5,500 · EducationUCLA FOUNDATION — $3,500 · EducationJOHN FITZGERALD KENNEDY LIBRARY FOUNDATION INCORPORATED — $2,000 · EducationCONNECTICUT COLLEGE — $500 · EducationGIRLTREK INCORPORATED — $500 · EducationLEAGUE TO SAVE LAKE TAHOE — $11,042 · Religion
Other$418,524Arts & Culture$69,368Health$23,160Civil Rights$16,000Human Services$12,280Education$12,000Religion$11,042

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

25%50%75%100%$100k$1.0M$10M$100Mgrantee revenue →↑ your share of their budgetSOLVE ME CFS INITIATIVE INC — $35,100 over 4y, 1.4% of budgetBETH MORRISON PROJECTS INC — $17,578 over 6y, 0.2% of budgetOPERA AMERICA INC — $13,000 over 5y, 0.1% of budgetKIF1AORG INC — $11,050 over 3y, 2.3% of budgetLEAGUE TO SAVE LAKE TAHOE — $11,042 over 6y, 0.1% of budgetTREVOR PROJECT INC — $8,500 over 6y, 0.0% of budgetOPERA SANTA BARBARA — $8,030 over 5y, 0.1% of budgetON SITE OPERA INC — $7,702 over 4y, 0.8% of budgetTHEATRE COMMUNICATIONS GROUP INC — $6,750 over 5y, 0.1% of budgetCENTER THEATRE GROUP OF LOS ANGELES — $5,500 over 2y, 0.0% of budgetThe Florida State University Foundation Inc — $5,500 over 3y, 0.0% of budgetMEDECINS SANS FRONTIERES USA INC — $5,000 over 6y, 0.0% of budgetLANGE FOUNDATION — $4,750 over 6y, 0.0% of budgetGLIMMERGLASS OPERA THEATRE INC — $4,500 over 3y, 0.0% of budgetOUR HOUSE GRIEF SUPPORT CENTER — $4,010 over 3y, 0.1% of budgetWASHINGTON NATIONAL OPERA — $4,000 over 4y, 0.2% of budgetBROADWAY CARESEQUITY FIGHTS AIDS INC — $3,532 over 3y, 0.0% of budgetVENICE FAMILY CLINIC — $3,500 over 2y, 0.0% of budgetUCLA FOUNDATION — $3,500 over 2y, 0.0% of budgetLOS ANGELES OPERA COMPANY — $3,500 over 1y, 0.0% of budgetGIRL TALK FOUNDATION — $3,280 over 3y, 14% of budgetSOUTHERN POVERTY LAW CENTER INC — $3,000 over 5y, 0.0% of budgetOPERA ORLANDO INC — $2,510 over 2y, 0.1% of budgetEQUAL JUSTICE INITIATIVE — $2,500 over 2y, 0.0% of budgetAmerican National Red Cross & Its Constituent Chapters and Branches — $2,500 over 1y, 0.0% of budgetTHE CENTER FOR REPRODUCTIVE RIGHTS INC — $2,500 over 2y, 0.0% of budgetTHE ACTORS' FUND OF AMERICA — $2,280 over 3y, 0.0% of budgetJOHN FITZGERALD KENNEDY LIBRARY FOUNDATION INCORPORATED — $2,000 over 1y, 0.0% of budgetHUMAN RIGHTS FOUNDATION INC — $2,000 over 1y, 0.0% of budgetTHE KENNEDY COLLECTIVE INC — $2,000 over 1y, 0.0% of budgetSPECIAL OLYMPICS INC — $1,750 over 5y, 0.0% of budgetOPERA ON THE JAMES — $1,500 over 1y, 0.3% of budgetTHE LOS ANGELES FREE CLINIC — $1,500 over 1y, 0.0% of budgetSOUTHERN CALIFORNIA PUBLIC RADIO — $1,250 over 4y, 0.0% of budgetBLOOD CANCER UNITED INC — $1,100 over 3y, 0.0% of budgetOPERATION CALIFORNIA INC — $1,000 over 1y, 0.0% of budgetMULTIPLE SCLEROSIS FOUNDATION INC — $1,000 over 1y, 0.0% of budgetThe Ocean Foundation — $1,000 over 4y, 0.0% of budgetTHE LOVEJOY FOUNDATION INC — $1,000 over 1y, 0.1% of budgetTOGETHER RISING — $1,000 over 1y, 0.0% of budgetRIGHT TO BE INC — $1,000 over 1y, 0.0% of budgetGLAUCOMA RESEARCH FOUNDATION — $500 over 1y, 0.0% of budgetKCRW FOUNDATION INC — $500 over 1y, 0.0% of budgetCONNECTICUT COLLEGE — $500 over 1y, 0.0% of budgetOJAI PLAYWRIGHTS CONFERENCE — $500 over 1y, 0.2% of budgetTranslifeline DBA Trans Lifeline — $500 over 1y, 0.0% of budgetGIRLTREK INCORPORATED — $500 over 2y, 0.0% of budgetSunset Hall Inc — $500 over 1y, 0.6% 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 SOLVE ME CFS INITIATIVE INC
  • Who funds BETH MORRISON PROJECTS INC
  • Who funds OPERA AMERICA INC
  • Who funds KIF1AORG INC
  • Who funds LEAGUE TO SAVE LAKE TAHOE
  • Who funds TREVOR PROJECT INC
  • Who funds OPERA SANTA BARBARA
  • Who funds ON SITE OPERA INC
  • Who funds Overtone Industries
  • Who funds THEATRE COMMUNICATIONS GROUP INC
  • Who funds CENTER THEATRE GROUP OF LOS ANGELES
  • Who funds The Florida State University Foundation Inc
  • Who funds MEDECINS SANS FRONTIERES USA INC
  • Who funds LANGE FOUNDATION
  • Who funds GLIMMERGLASS OPERA THEATRE INC
  • Who funds OUR HOUSE GRIEF SUPPORT CENTER
  • Who funds WASHINGTON NATIONAL OPERA
  • Who funds BROADWAY CARESEQUITY FIGHTS AIDS INC
  • Who funds VENICE FAMILY CLINIC
  • Who funds UCLA FOUNDATION
  • Who funds LOS ANGELES OPERA COMPANY
  • Who funds GIRL TALK FOUNDATION
  • Who funds SOUTHERN POVERTY LAW CENTER INC

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.

California Community FoundationCA19× affinity9 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: California Community Foundation · Opera America Inc · The Aaron Copland Fund for Music Inc Co Alter Kendrick & Baron LLP · The Amphion Foundation Inc Co Alter Kendrick & Baron LLP · The Howard Gilman Foundation Inc · The Andrew W Mellon Foundation · Jewish Community Foundation of Los Angeles · The Corey Foundation · The Howard and Sarah D Solomon Foundation · The Ayco Charitable Foundation · The Pfizer Foundation Inc · Silicon Valley Community 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 Seniel & Dorothy Ostrow 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 · 30%1%4%8%15%your share of their income ↑0%23%45%68%90%share of the org’s income from governmentmedian 79%
  • The Kennedy Collective Inc79% of income from government
  • Connecticut College0% of income from government
no gov moneyreceives it· size = income
3get no government money at all
15report government grants on their 990 we could not trace to a source (not plotted)
1rely on government for over half their income
⤢ axis zoomed · 0–90%
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 131 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