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Plinth

· Private foundation

Ellen H Atterbury and Malcolm Atterbury Jr

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.

$76k
Granted FY2025still arriving
7
Grants FY2025still arriving
3
States reached
$15k
Largest
01What you fund
01100% classified

What you funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year — across FY20202025.

Civil Rights$247kCrime & Legal$184kPhilanthropy$155kYouth Development$28k
02FY2025 · 7 grants

Where the money goes

Your grants by size, and where they go.

By grant size · FY2025

  • Under $10k4 grants · $30k
  • $10k–50k3 grants · $46k
$7,600
Median grant
3
States reached
$1.5M
Total assets
Largest grants
RecipientAmount
THE WESTERN JUSTICE CENTER$15,200
SOUTHERN POVERTY LAW CENTER$15,200
EQUALITY NOW INC$15,200
FUND FOR SANTA BARBARA INC$7,600
FUTURE LEADERS OF AMERICA$7,600
YOUNG MASTERMINDS INITIATIVE$7,600
HOUSE OF PRIDE AND EQUALITY$7,600
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:

Dollar for dollar, your grants (FY20–25) land where the poverty rate runs at 15%, against an area that typically sits at 12%. 97% of your dollars go to grantees based in above-average-need neighborhoods. Most of your grants land in higher-need ZIPs.

area typical 12%CENTRAL COAST ALLIANCE UNITED: $15k → 10%THE WESTERN JUSTICE CENTER: $38k → 14%FUND FOR SANTA BARBARA INC: $45k → 14%YOUNG MASTERMINDS INITIATIVE: $8k → 20%SOUTHERN POVERTY LAW CENTER: $38k → 18%THE WESTERN JUSTICE CENTER: $37k → 14%FUND FOR SANTA BARBARA INC: $30k → 14%YOUNG MASTERMINDS INITIATIVE: $8k → 20%SOUTHERN POVERTY LAW CENTER: $37k → 18%THE WESTERN JUSTICE CENTER: $35k → 14%FUND FOR SANTA BARBARA INC: $30k → 14%YOUNG MASTERMINDS INITIATIVE: $5k → 20%SOUTHERN POVERTY LAW CENTER: $35k → 18%THE WESTERN JUSTICE CENTER: $30k → 14%FUND FOR SANTA BARBARA INC: $25k → 14%SOUTHERN POVERTY LAW CENTER: $30k → 18%THE WESTERN JUSTICE CENTER: $30k → 14%FUND FOR SANTA BARBARA INC: $17k → 14%SOUTHERN POVERTY LAW CENTER: $30k → 18%THE WESTERN JUSTICE CENTER: $15k → 14%JUST COMMUNITIES: $15k → 14%SOUTHERN POVERTY LAW CENTER: $15k → 18%JUST COMMUNITIES: $10k → 14%FUND FOR SANTA BARBARA INC: $8k → 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.

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.

93%of every dollar goes to organizations you’ve funded before.
$569k · 5 repeat orgs$45k to everyone else

5 repeat relationships — 4 still active in FY2025, 1 since wound down; 3 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

5
1

Total granted

$569k
$15k

Median revenue growth · since first grant

+30%
+76%

Still filing today

100%
100%

New vs renewed · share of each year

In FY2025, 60% of grant dollars renewed an existing relationship; $30k went to new ones.

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

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

’20’21’22’23’24’25
Crime & LegalCivil RightsYouth DevelopmentPhilanthropyInternationalCommunity ImprovementOther

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

  • WESTERN JUSTICE CENTER FOUNDATION
    6× · 2020–2025 · $184k · revenue +143%
  • SP
    SOUTHERN POVERTY LAW CENTER INC
    6× · 2020–2025 · $184k · revenue +13%
  • FUND FOR SANTA BARBARA INC
    6× · 2020–2025 · $155k · revenue +138%

Funded once

  • CC
    Central Coast Alliance United for a Sustainable Economygraduated
    one grant, 2021 · $15k · revenue +76%

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
Inner City Law Center

In 2024, Inner City Law Center, ICLC, served over 3,400 people, helping vulnerable Angelenos to remain in their homes and recover nearly $20.5 million in financial benefits.

Crime & Legal
2
Jobs with Justice San Francisco

A long-term, strategic alliance of labor, community, faith-based, and student organizations working together to build greater economic power for workers and community members through employee rights at work and access to good jobs,…

Employment
3
Santa Cruz Local Inc

Independent nonpartisan newsroom serving Santa Cruz County, California we are all watching and engaged in our local government, our needs are addressed, democracy works better and our community is stronger.

4
Equal Justice Society

The Equal Justice Society (EJS) is transforming the nations consciousness on racethrough law, social science, and the arts. EJS works to dismantle structural andinstitutional racism to advance robust equal protection under the Fourteenth…

Civil Rights
5
Fund for Justice

Fund for Justice is a nationally connected social impact research and advocacy organization that works to achieve fundamental, systemic reform by addressing policies and practicies that prevent individuals from reaching their full…

Crime & Legal
6
Transgender Law Center

Transgender Law Center TLC changes law, policy and attitudes so that all people can live safely, authentically, and free from discrimination regardless of their gender identity or expression.

Civil Rights
7
Equality California Institute

To create a world that is healthy, just and fully equal for all lgbtq+ people.

Public Benefit
8
Rogue Climate

Rogue Climate's mission is to empower Southern Oregon communities most impacted by climate change including low-income, rural, youth, seniors & communities of color, to win climate justice by organizing for clean energy, sustainable jobs &…

Education
9
California Coastkeeper dba California Coastkeeper Alliance

California Coastkeeper Alliance unites Waterkeeper programs statewide to fight for swimmable, fishable, and drinkable waters for all Californians.

Environment
10
California Youth Defender Center Inc

Defend youth rights by building and training a statewide defense coalition that challenges injustices, drives policy change, and champions community.

Crime & Legal
11
Sacramento Lgbt Community Center

The Center works to create a region where all LGBTQ+ people thrive; we support health and wellness,advocate for equity and justice, and work to uplift our diverse and culturally rich LGBTQ+ community.

12
Ecology Action of Santa Cruz

The primary and specific purpose for which the said corporation is formed is to empower individuals, businesses and communities to take actions today that achieve environmental and economic sustainability. The activities of the corporation…

Environment

For reference, the grantee most central to the portfolio’s shape is Just Communities Central Coast and the most unlike its peers is House of Pride and Equality. 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

9 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.

0
Load-bearing (≥25% of a budget)
4
Early backer (in before they grew)
9/9
Grantees still filing
7/9
Grew since you first funded

Where your money sits — by cause, then by grantee

WESTERN JUSTICE CENTER FOUNDATION — $184,238 · Crime & LegalWESTERN JUSTICE CENTER FOUNDATIONSOUTHERN POVERTY LAW CENTER INC — $184,238 · Crime & LegalSOUTHERN POVERTY LAW CENTER INCFUND FOR SANTA BARBARA INC — $154,600 · PhilanthropyFUND FOR SANTA BARBARA INCJust Communities Central Coast — $25,000 · Civil RightsHOUSE OF PRIDE AND EQUALITY — $7,600 · Civil RightsYOUNG MASTERMINDS INITIATIVE INC — $20,600 · Youth DevelopmentFuture Leaders of America — $7,600 · Youth DevelopmentEquality Now Inc — $15,200 · InternationalCentral Coast Alliance United for a Sustainable Economy — $15,000 · Community Improvement
Crime & Legal$368,476Philanthropy$154,600Civil Rights$32,600Youth Development$28,200International$15,200Community Improvement$15,000

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 budgetWESTERN JUSTICE CENTER FOUNDATION — $184,238 over 6y, 3.0% of budgetSOUTHERN POVERTY LAW CENTER INC — $184,238 over 6y, 0.0% of budgetFUND FOR SANTA BARBARA INC — $154,600 over 6y, 2.3% of budgetJust Communities Central Coast — $25,000 over 2y, 1.1% of budgetYOUNG MASTERMINDS INITIATIVE INC — $20,600 over 3y, 2.1% of budgetCentral Coast Alliance United for a Sustainable Economy — $15,000 over 1y, 0.5% of budgetHOUSE OF PRIDE AND EQUALITY — $7,600 over 1y, 13% 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.

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 FoundationCA14.7× affinity5 shared granteesties to 10 of 10Hover any node to trace its alignments.Compare side by side →

Open a dossier: California Community Foundation · James S Bower Foundation · Fund for Santa Barbara Inc · The McCune Foundation · Hutton Foundation Dba Hutton Parker Foundation · Weingart Foundation · The California Wellness Foundation · Network for Good · 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 Ellen H Atterbury and Malcolm Atterbury Jr 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.

2023
202122232425
no gov · 00%1%4%8%15%your share of their income ↑0%1%3%4%5%share of the org’s income from government
    no gov moneyreceives it· size = income
    0get no government money at all
    1report government grants on their 990 we could not trace to a source (not plotted)
    0rely on government for over half their income
    ⤢ axis zoomed · 0–5%
    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 9 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