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Plinth

· Private foundation

Vintage Bmw House

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.

$18k
Granted FY2025still arriving
17
Grants FY2025still arriving
1
States reached
$2k
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 FY20172025.

Environment$66kArts & Culture$48kAnimals$20kRecreation & Sports$10kEducation$9kHealth$7kHuman Services$4kPhilanthropy$3kOther$0
02FY2025 · 17 grants

Where the money goes

Your grants by size, and where they go.

$1,000
Median grant
1
States reached
$404k
Total assets
Largest grants
RecipientAmount
ADULT DAY HEALTH CARE MAD RIVER$2,000
PLANNED PARENTHOOD OF NO CAL$1,000
TRINIDAD COASTAL LAND TRUST$1,000
HISTORIC SITES SOCIETY OF ARCATA$1,000
FRIENDS OF THE DUNES$1,000
HUMBOLDT ARTS COUNCIL$1,000
HUMBOLDT COUNTY HISTORICAL SOCIETY$1,000
FRIENDS OF THE MCKINLEYVILLE LIBRARY$1,000
MCKINLEYVILLE LAND TRUST$1,000
HUMBOLDT LIBRARY FOUNDATION$1,000
CLARKE HISTORICAL MUSEUM$1,000
EUREKA HERITAGE SOCIETY$1,000
FRIENDS OF ARCATA MARSH$1,000
TIMBER HERITAGE ASSOCIATION$1,000
Individual grant recipient$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 (FY24–25, $4k) land where the poverty rate runs at 18%, against an area that typically sits at 11%. 100% of those dollars go to grantees based in above-average-need neighborhoods. Most of your grants land in higher-need ZIPs.

area typical 11%ADULT DAY HEALTH CARE MAD RIVER: $2k → 18%ADULT DAY HEALTH CARE MAD RIVER: $2k → 18%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.

98%of every dollar goes to organizations you’ve funded before.
$164k · 29 repeat orgs$4k to everyone else

29 repeat relationships — 17 still active in FY2025, 12 since wound down.

How the two cohorts compare

Re-uppedFunded once

Organizations

29
3

Total granted

$164k
$4k

Median revenue growth · since first grant

+101%
+329%

Still filing today

66%
33%

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
EnvironmentAnimalsArts & CultureEducationHuman ServicesOther

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

  • HB
    HUMBOLDT BOTANICAL GARDENS FOUNDATION
    8× · 2017–2025 · $15k · revenue +101%
  • TC
    Trinidad Coastal Land Trust
    9× · 2017–2025 · $14k · revenue +371%
  • TH
    TIMBER HERITAGE ASSOCIATION
    9× · 2017–2025 · $12k · revenue +33%

Funded once

  • HT
    HUMBOLDT TRAILS COUNCIL
    one grant, 2021 · $2k
  • HS
    HISTORICAL SITES OF ARCATA
    one grant, 2020 · $1k
  • BA
    Bird Ally Xgraduated
    one grant, 2019 · $500 · revenue +329%

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
Humboldt County Historical Association
2
Redwood County Historical Society

Historical preservation

Arts & Culture
3
Friends of Huddart & Wunderlich Parks

The Friends of Huddart and Wunderlich Parks is a group of park enthusiasts and stewards who provide a wide range of programs and events in two historic redwood parks in the heart of the Bay Area. We lead hikes, provide environmental…

Environment
4
Sonoma Botanical Garden
5
The Calflora Database

The Calflora Database is a nonprofit organization dedicated to providing information about California plant biodiversity for use in Education, Research and Conservation. Calflora is structured as a digital library to fulfill the following…

Environment
6
Nature Collective

Nature collective's mission is to drive a passion for nature for all. we think inclusively and diversely when serving those devoid of nature those who remember nature and want to connect back to it and those who have an affinity with…

Environment
7
Elkhorn Slough Foundation

The Elkhorn Slough Foundation's mission is to conserve and restore Elkhorn Slough and its watershed, California's largest tidal salt marsh south of San Francisco Bay. Renowned for its extraordinary biodiversity, Elkhorn Slough features a…

Philanthropy
8
Hills Conservation Network

Prevent deforestation of East Bay Hills

Environment
9
The Equinox Preservation Trust Inc
Environment
10
Siskiyou Land Conservancy

The Siskiyou Land Conservancy is a state and federally approved non-profit organization that assists landowners who want to protect the natural values of their land, either through purchase or establishment of conservation easements.

Environment
11
Central Coast Land Conservancy Inc

The Central Coast Land Conservancy mission is to protect, in perpetuity, the wild spaces and natural heritage of Oregon's Central Coast

Environment
12
California Wildlife Foundation

The foundation works with diverse groups representing many interests to acquire and restore critical wildlife habitat and protecting species

Animals

For reference, the grantee most central to the portfolio’s shape is Save the Redwoods League and the most unlike its peers is Bird Ally X. 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

21 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. 21 of the 33 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)
21/21
Grantees still filing
18/21
Grew since you first funded

Where your money sits — by cause, then by grantee

TIMBER HERITAGE ASSOCIATION — $12,000 · OtherTIMBER HERITAGE ASSOCIATIONMCKINLEYVILLE LAND TRUST — $9,000 · OtherMCKINLEYVILLE LAND TRUSTHUMBOLDT BAY TRAIL FUND — $8,000 · OtherHUMBOLDT BAY TRAIL FUNDFRIENDS OF ARCATA MARSH — $7,000 · OtherFRIENDS OF ARCATA MARSHPLANNED PARENTHOOD OF NO CAL — $6,500 · OtherPLANNED PARENTHOOD OF NO CALFRIENDS OF THE MCKINLEYVILLE LIBRARY — $4,500 · OtherFRIENDS OF THE MCKINLEYVILLE LIBRARYEureka Heritage Society — $4,000 · OtherEureka Heritage SocietyHISTORICAL SITES SOCIETY OF ARCATA INCORPORATED — $3,500 · OtherIndividual grant recipient — $3,000 · OtherHSU NATURAL HISTORY MUSEUM — $3,000 · Other+7 more — $11,000 · Other+7 moreHUMBOLDT BOTANICAL GARDENS FOUNDATION — $14,500 · EnvironmentHUMBOLDT BOTANICAL GARDENS FOUNDA…Trinidad Coastal Land Trust — $14,000 · EnvironmentTrinidad Coastal Land TrustFRIENDS OF THE DUNES — $8,950 · EnvironmentFRIENDS OF THE DUNESHUMBOLDT WATERKEEPER — $6,000 · EnvironmentHUMBOLDT WATERKEEPERCalifornia Native Plant Society — $2,000 · Environment+3 more — $4,000 · Environment+3 moreHUMBOLDT ARTS COUNCIL INC — $7,500 · Arts & CultureHUMBOLDT ARTS…CLARKE HISTORICAL MUSEUM — $7,100 · Arts & CultureCLARKE HISTOR…Humboldt Historical Society DBA Humboldt County Historical Society — $6,000 · Arts & CultureHumboldt Hist…SEQUOIA PARK ZOO FOUNDATION — $14,500 · AnimalsSEQUOIA PARK…XERCES SOCIETY INC — $3,000 · AnimalsXERCES SOCIE…+1 more — $500 · AnimalsHUMBOLDT LIBRARY FOUNDATION — $4,500 · EducationADULT DAY HEALTH CARE OF MAD RIVER — $4,000 · Human Services
Other$71,500Environment$49,450Arts & Culture$20,600Animals$18,000Education$4,500Human Services$4,000

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$10Mgrantee revenue →↑ your share of their budgetSEQUOIA PARK ZOO FOUNDATION — $14,500 over 8y, 0.4% of budgetHUMBOLDT BOTANICAL GARDENS FOUNDATION — $14,500 over 8y, 0.8% of budgetTrinidad Coastal Land Trust — $14,000 over 9y, 1.2% of budgetTIMBER HERITAGE ASSOCIATION — $12,000 over 9y, 2.3% of budgetFRIENDS OF THE DUNES — $8,950 over 8y, 0.4% of budgetHUMBOLDT ARTS COUNCIL INC — $7,500 over 8y, 0.4% of budgetCLARKE HISTORICAL MUSEUM — $7,100 over 5y, 1.5% of budgetHUMBOLDT WATERKEEPER — $6,000 over 6y, 1.4% of budgetHumboldt Historical Society DBA Humboldt County Historical Society — $6,000 over 5y, 1.3% of budgetHUMBOLDT LIBRARY FOUNDATION — $4,500 over 5y, 0.5% of budgetADULT DAY HEALTH CARE OF MAD RIVER — $4,000 over 2y, 0.3% of budgetEureka Heritage Society — $4,000 over 4y, 2.3% of budgetXERCES SOCIETY INC — $3,000 over 5y, 0.0% of budgetBAT CONSERVATION INTERNATIONAL — $2,000 over 4y, 0.0% of budgetREDWOOD ART ASSOCIATION — $2,000 over 2y, 1.4% of budgetCalifornia Native Plant Society — $2,000 over 3y, 0.0% of budgetNorthcoast Environmental Center — $1,500 over 2y, 0.5% of budgetSAVE THE REDWOODS LEAGUE — $1,500 over 3y, 0.0% of budgetEnvironmental Protection Information Center Inc — $1,000 over 2y, 0.1% of budgetBird Ally X — $500 over 1y, 0.5% 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 SEQUOIA PARK ZOO FOUNDATION
  • Who funds HUMBOLDT BOTANICAL GARDENS FOUNDATION
  • Who funds Trinidad Coastal Land Trust
  • Who funds TIMBER HERITAGE ASSOCIATION
  • Who funds FRIENDS OF THE DUNES
  • Who funds HUMBOLDT ARTS COUNCIL INC
  • Who funds CLARKE HISTORICAL MUSEUM
  • Who funds HUMBOLDT WATERKEEPER
  • Who funds Humboldt Historical Society DBA Humboldt County Historical Society
  • Who funds HUMBOLDT LIBRARY FOUNDATION
  • Who funds ADULT DAY HEALTH CARE OF MAD RIVER
  • Who funds Eureka Heritage Society
  • Who funds XERCES SOCIETY INC
  • Who funds BAT CONSERVATION INTERNATIONAL
  • Who funds REDWOOD ART ASSOCIATION
  • Who funds California Native Plant Society
  • Who funds Northcoast Environmental Center
  • Who funds SAVE THE REDWOODS LEAGUE
  • Who funds Trees Foundation
  • Who funds Environmental Protection Information Center Inc
  • Who funds Bird Ally X

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.

Humboldt Area FoundationCA42.5× affinity18 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Humboldt Area Foundation · Christine & Jalmer Berg Foundation · Trees Foundation · The Rose Foundation for Communities the Environment · Resources Legacy Fund · The Schmidbauer Family Foundation · The Maxwellhanrahan Foundation · Coast Central Credit Union · Network for Good · Donor Advised Charitable Giving Inc · Amazonsmile Foundation · Fidelity Investments Charitable Gift 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 Vintage Bmw House 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%0%1%3%5%your share of their income ↑0%25%50%75%100%share of the org’s income from governmentmedian 22%
  • Xerces Society Inc22% of income from government
no gov moneyreceives it· size = income
0get no government money at all
4report government grants on their 990 we could not trace to a source (not plotted)
0rely on government for over half their income
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 33 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