Skip to content
Plinth
Foundation Dossiers
Plinth

· Private foundation

The Louderback Family Foundation

Its FY2024 filing reports that it funds preselected organizations and did not take unsolicited requests; check the foundation's own site before ruling it out.

$502k
Granted FY2024still arriving
27
Grants FY2024still arriving
7
States reached
$73k
Largest
01What you fundRead
02The needRead
03Your edgeRead
04Your fieldRead
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 FY2021–2024.

Human Services$264kYouth Development$241kScience & Tech$190kAnimals$150kEnvironment$150kHealth$147kEducation$88kRecreation & Sports$61kOther$0
02FY2024 · 27 grants

Where the money goes

Your grants by size, and where they go.

By grant size · FY2024

  • Under $10k9 grants · $28k
  • $10k–50k15 grants · $302k
  • $50k–250k3 grants · $173k
$10,000
Median grant
7
States reached
$10.0M
Total assets
Largest grants
RecipientAmount
FOR INSPIRATION AND RECOGNITION OF SCIENCE AND TEC$72,500
CATALYST YOUTH NETWORK$50,000
AMERICAN FRIENDS OF THE OCEAN CLEANUP FOUNDATION$50,000
WARRIORS & QUIET WATERS FOUNDATION$37,500
MARIN FOSTER CARE ASSOCIATION$33,000
TAHOE FUND$28,000
ST JUDE CHILDREN'S RESEARCH HOSPITAL$25,000
CALIFORNIA WATERFOWL ASSOCIATION$25,000
BOYS & GIRLS CLUBS OF OAKLAND INC$25,000
LEND A HAND FOUNDATION INC OF NORTHERN CALIFORNIA$25,000
MONTESSORI DE TERRA LINDA$23,000
GREATER CHICAGO FOOD DEPOSITORY$15,000
MONTANA INDEPENDENT LIVING PROJECT INC$15,000
PAWS CHICAGO$10,000
MOUNTAIN AREA PRESERVATION FOUNDATION$10,000
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 (FY23–24, $145k) land where the poverty rate runs at 9%, against an area that typically sits at 9%. 41% of those dollars go to grantees based in above-average-need neighborhoods. Your grants spread fairly evenly across need levels.

area typical 9%SAMARITAN NEIGHBORHOOD CENTER: $35k → 10%LEND A HAND FOUNDATION INC OF NORTHERN CALIFORNIA: $25k → 10%CATALYST YOUTH NETWORK: $50k → 9%CATALYST YOUTH NETWORK: $35k → 9%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

NH
MT
IL
NY
MA
CA
CO
AL

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.

74%of every dollar goes to organizations you’ve funded before.
$1.0M · 22 repeat orgs$359k to everyone else

And the relationships you keep tend to grow: grantees you re-up on have seen median revenue of +61% since the first grant, against -15% for the ones you funded once.

22 repeat relationships — 19 still active in FY2024, 3 since wound down; 7 grantees were first funded in FY2024 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

22
12

Total granted

$1.0M
$249k

Median revenue growth · since first grant

+61%
-15%

Still filing today

91%
92%

New vs renewed · share of each year

In FY2024, 78% of grant dollars renewed an existing relationship; $110k went to new ones.

50%100%’21’22’23’24
RenewedFirst-time

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

’21’22’23’24
Human ServicesYouth DevelopmentEducationEnvironmentHealthScience & TechOther

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

  • CW
    CALIFORNIA WATERFOWL ASSOCIATION
    4× · 2021–2024 · $115k · revenue +78%
  • MF
    MARIN FOSTER CARE ASSOCIATION
    3× · 2022–2024 · $101k · revenue +110%
  • CY
    Catalyst Youth Network
    2× · 2023–2024 · $85k · revenue +61% · 36% of their budget

Funded once

  • PO
    Project OneTen
    one grant, 2022 · $35k · 35% of their budget
  • G
    GIRLVENTURES
    one grant, 2022 · $35k · revenue -33%
  • SN
    SAMARITAN NEIGHBORHOOD CENTER
    one grant, 2023 · $35k · revenue -32%

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
Monterey Bay Aquarium Research Institute
—
2
Transportation Alternatives for Marin
Public Benefit
3
California Ocean Alliance

The mission of the California Ocean Alliance is to conduct world-class marine research which leads directly to sound policy decisions that safeguard the oceans and allow marine mammals to thrive into the next century.

Science & Tech
4
Sonoma Mountain Institute
Environment
5
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
6
Bay Nature Institute dba Bay Nature Bay Nature Magazine

Bay Nature connects the people of the San Francisco Bay Area to our natural world and motivates people to solve problems with nature in mind. Our vision is that all people have a close relationship with theirnatural world.

Environment
7
California Ocean Science Trust

California ocean science trust (ost) is a non-profit organization dedicated to accelerating progress towards a healthy and productive ocean future for california. created by state legislation, ost bridges the gap between cutting-edge…

Environment
8
San Francisco Bay Bird Observatory

The San Francisco Bay Bird Observatory is dedicated to the conservation of birds and their habitats through science and outreach.

Environment
9
California Sportfishing Protection Allia
Environment
10
Camps in Common

To promote and celebrate connections between nature, family, and community, by creating unique opportunities that advance cultural diversity, environmental appreciation, and youth empowerment.

Human Services
11
Mountains 2 Sea

Our mission is to empower youth using outdoor adventure learning to help them achieve their personal potential. Through outings in the mountains and on the sea, participants will develop a strong foundation for personal health and…

Youth Development
12
Bayorg

Bay ecotarium is the largest non-profit 501(c)(3) watershed conservation group in the san francisco bay area committing to global climate resilience and ocean conservation, inspiring actionable environmental stewardship locally, and…

Arts & Culture

For reference, the grantee most central to the portfolio’s shape is Tahoe Fund and the most unlike its peers is Camp Bullwheel Inc. 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 backsteadyYouth Mentoring ProgramsFood Banks and PantriesMilitary Veterans SupportYouth Development CentersDevelopmental Disabilities …Youth Sports ProgramsIndependent K-12 SchoolsLocal Food System Organizat…Cancer Support ServicesAnimal Rescue and ShelterCommunity FoundationsPregnancy Support ServicesPolicy Research and AdvocacyEnvironmental Conservation …Women & Girls Leadership De…
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 27 years old; the field is 14. You back the established end — and your money leans older still.

THE FIELDby orgYOUR GRANTEESby number24%3%<5yr15%16%5–10yr20%13%10–20yr17%42%20–35yr11%19%35–55yr13%7%55yr+
THE FIELDby orgYOUR MONEYby value24%2%<5yr15%14%5–10yr20%19%10–20yr17%39%20–35yr11%22%35–55yr13%4%55yr+

The field is 24% startups (under 5 years old) — 3% of your grantees by number, and just 2% of your money.

Closures · last 5 years

The orgs you fund almost never close — 0.0% lost their exemption, against 14% of the field you don’t fund.

orgs you fund
0.0%0/37
the rest of the field
14%
26,003/186,941

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

37 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. 37 of the 41 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.

2
Load-bearing (≥25% of a budget)
10
Early backer (in before they grew)
37/37
Grantees still filing
21/37
Grew since you first funded

Where your money sits — by cause, then by grantee

AMERICAN FRIENDS OF THE OCEAN CLEANUP FOUNDATION — $50,000 · OtherAMERICAN FRIENDS OF THE OCEAN CLEANUP F…ST JUDE CHILDREN'S RESEARCH HOSPITAL — $50,000 · OtherST JUDE CHILDREN'S RESEARCH HOSPITALMONTANA INDEPENDENT LIVING PROJECT INC — $25,000 · OtherBOYS & GIRLS CLUBS OF OAKLAND — $25,000 · OtherMountain Area Preservation Foundation — $25,000 · OtherGALLINAS VALLEY LITTLE LEAGUE FKA DIXIE TERRA LINDA LITTLE LEAGUE — $23,000 · OtherGREATER SAN JOSE AFTER-SCHOOL ALL STARS — $20,833 · OtherMONTESSORI DE TERRA LINDA — $52,000 · OtherMONTESSORI DE TERRA LINDAOAKLAND PROMISE — $20,000 · OtherPAWS CHICAGO — $35,000 · OtherPAWS CHICAGOPLAY MARIN — $33,200 · OtherPLAY MARINGREATER CHICAGO FOOD DEPOSITORY — $30,000 · OtherGREATER CHICAGO FOOD DEPOSITORYEQUAL JUSTICE INITIATIVE — $16,650 · Other+11 more — $79,000 · Other+11 moreFor Inspiration and Recognition of Science and Technology (FIRST) — $145,000 · Science & TechFor Inspiration…MARINE APPLIED RESEARCH AND EXPLORATION — $40,000 · Science & TechMARINE APPLIED …Catalyst Youth Network — $85,000 · Human ServicesCatalyst Youth…GIRLVENTURES — $35,417 · Human ServicesGIRLVENTURESSAMARITAN NEIGHBORHOOD CENTER — $35,000 · Human ServicesSAMARITAN NEIG…LEND A HAND FOUNDATION — $25,000 · Human ServicesLEND A HAND FO…CALIFORNIA WATERFOWL ASSOCIATION — $115,000 · EnvironmentCALIFORNIA WAT…TAHOE FUND — $55,000 · EnvironmentTAHOE FUNDOCEAN AWARENESS PROJECT INC — $10,000 · EnvironmentOCEAN AWARENES…AMERICAN FOUNDATION FOR SUICIDE PREVENTION — $68,333 · HealthAMERICAN FO…WARRIORS & QUIET WATERS FOUNDATION INC — $67,600 · HealthWARRIORS & …+1 more — $3,000 · HealthBIG SKY YOUTH EMPOWERMENT PROJECT INC — $45,000 · Youth DevelopmentBIG SKY Y…Project OneTen — $35,417 · Youth DevelopmentProject O…Bay Area Girls Club — $30,000 · Youth DevelopmentBay Area …THE NOYO FOOD FOREST — $5,000 · Youth DevelopmentMARIN FOSTER CARE ASSOCIATION — $101,200 · Public Benefit
Other$484,683Science & Tech$185,000Human Services$180,417Environment$180,000Health$138,933Youth Development$115,417Public Benefit$101,200

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 budgetFor Inspiration and Recognition of Science and Technology (FIRST) — $145,000 over 2y, 0.1% of budgetCALIFORNIA WATERFOWL ASSOCIATION — $115,000 over 4y, 0.2% of budgetMARIN FOSTER CARE ASSOCIATION — $101,200 over 3y, 4.7% of budgetCatalyst Youth Network — $85,000 over 2y, 36% of budgetAMERICAN FOUNDATION FOR SUICIDE PREVENTION — $68,333 over 3y, 0.1% of budgetWARRIORS & QUIET WATERS FOUNDATION INC — $67,600 over 3y, 0.4% of budgetTAHOE FUND — $55,000 over 2y, 0.8% of budgetMONTESSORI DE TERRA LINDA — $52,000 over 3y, 0.5% of budgetAMERICAN FRIENDS OF THE OCEAN CLEANUP FOUNDATION — $50,000 over 1y, 0.4% of budgetBIG SKY YOUTH EMPOWERMENT PROJECT INC — $45,000 over 3y, 1.3% of budgetMARINE APPLIED RESEARCH AND EXPLORATION — $40,000 over 3y, 1.5% of budgetProject OneTen — $35,417 over 1y, 35% of budgetGIRLVENTURES — $35,417 over 1y, 4.5% of budgetPAWS CHICAGO — $35,000 over 3y, 0.1% of budgetSAMARITAN NEIGHBORHOOD CENTER — $35,000 over 1y, 21% of budgetPLAY MARIN — $33,200 over 1y, 12% of budgetBay Area Girls Club — $30,000 over 1y, 18% of budgetGREATER CHICAGO FOOD DEPOSITORY — $30,000 over 2y, 0.0% of budgetMONTANA INDEPENDENT LIVING PROJECT INC — $25,000 over 2y, 0.1% of budgetLEND A HAND FOUNDATION — $25,000 over 1y, 5.3% of budgetBOYS & GIRLS CLUBS OF OAKLAND — $25,000 over 1y, 0.7% of budgetMountain Area Preservation Foundation — $25,000 over 2y, 3.4% of budgetGALLINAS VALLEY LITTLE LEAGUE FKA DIXIE TERRA LINDA LITTLE LEAGUE — $23,000 over 3y, 4.9% of budgetOAKLAND PROMISE — $20,000 over 2y, 0.1% of budgetEQUAL JUSTICE INITIATIVE — $16,650 over 1y, 0.0% of budgetEagle Mount — $15,000 over 2y, 0.4% of budgetTHE CENTER FOR REPRODUCTIVE RIGHTS INC — $12,500 over 1y, 0.0% of budgetCat Rodeo Scholarship Association — $10,500 over 3y, 1.7% of budgetOCEAN AWARENESS PROJECT INC — $10,000 over 2y, 1.6% of budgetALAMEDA COUNTY COMMUNITY FOOD BANK — $10,000 over 1y, 0.0% of budgetPACIFIC FLYWAY FUND — $10,000 over 1y, 1.5% of budgetCAMP BULLWHEEL INC — $5,000 over 1y, 17% of budgetCOMMUNITY LAND TRUST ASSOCIATION OF WEST MARIN — $5,000 over 1y, 0.3% of budgetTHE NOYO FOOD FOREST — $5,000 over 2y, 2.9% of budgetCANCER SUPPORT SONOMA — $3,000 over 1y, 1.5% of budgetPAN-MASSACHUSETTS CHALLENGE INC — $1,000 over 1y, 0.0% of budgetSAN DOMENICO SCHOOL — $1,000 over 1y, 0.0% 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.

Marin Community Found…The San Francisco Fou…Quest FoundationMcNabb FoundationSilicon Valley Commun…The Chicago Community…American Endowment Fo…Vanguard Charitable E…Network for GoodMorgan Stanley Global…American Online Givin…The Bank of America C…
Marin Community FoundationCA30.8× affinity14 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Marin Community Foundation · The San Francisco Foundation · Quest Foundation · McNabb Foundation · Silicon Valley Community Foundation · The Chicago Community Trust · American Endowment Foundation · Vanguard Charitable Endowment Program · Network for Good · Morgan Stanley Global Impact Funding Trust Inc · American Online Giving Foundation Inc · The Bank of America Charitable Foundation Inc

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 Louderback 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
’20’21’22’23’24’25
no gov · 00%3%10%23%40%your share of their income ↑0%8%15%22%30%share of the org’s income from government →median 0%
  • Pan-Massachusetts Challenge Inc — 0% of income from government
no gov moneyreceives it· size = income
0get no government money at all
5report government grants on their 990 we could not trace to a source (not plotted)
0rely on government for over half their income
⤢ axis zoomed · 0–30%
typical government reliance, FY20–25

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 41 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 2024, released 2024. Filings run roughly 12–24 months behind; figures are dated accordingly.

Source object · view filing

More from the funding graph

The unnamed billions
grants reported with no recipient in the public record
The regranting layer
51% of grant dollars land in the regranting layer
The DAF merry-go-round
$9.7B circulates between donor-advised funds
The camps
funders cluster by geography, not ideology
By state
where grant money is based, and what stays home
State money flows
the interactive map of money crossing state lines