Skip to content
Charles P Berolzheimer Foundation Inc at a glance

· Private foundation

Charles P Berolzheimer Foundation Inc

Its FY2026 filing reports that it funds preselected organizations and did not take unsolicited requests; check the foundation's own site before ruling it out.

$25k
Granted FY2026still arriving
12
Grants FY2026still arriving
4
States reached
$10k
Largest
01What it fundsRead
02The needRead
03Its granteesRead
04Its fieldRead
05Through PlinthRead
01What it funds
01100% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2025.

Education$46kEnvironment$46kAnimals$37kHealth$32kArts & Culture$15kCommunity Improvement$13kYouth Development$5kPhilanthropy$3kOther$0
02FY2026 · 12 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2026

  • Under $10k11 grants · $15k
  • $10k–50k1 grant · $10k
$500
Median grant
4
States reached
$411k
Total assets
Largest grants
RecipientAmount
VANDERBILT UNIVERSITY$10,000
NOYO CENTER FOR MARINE SCIENCE$6,000
LAFAYETTE PARTNERS IN EDUCATION$5,000
WILDCARE$1,000
MENDOCINO LAND TRUST$500
PHYSICIANS COMMITTEE FOR RESPONSIBLE MEDICINE$500
INATURALIST$500
NUTRITIONFACTSORG$500
ART EXPLORERS$250
THE MARINE MAMMAL CENTER$250
MENDOCINO ART CENTER$250
ENVIRONMENTAL WORKING GROUP$250
02The need
03

Does the money reach high-need areas?

Each grant placed by the hardship in its grantee’s ZIP, against the area’s typical level.

show:

Its human-services grants (FY17–17, $5k) 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. Its grants skew toward lower-need ZIPs.

area typical 11%LARKIN STREET YOUTH: $5k → 10%0%20%40%50%more need →
grant to an above-average-need area below average· circle size = grant amount
How this is measured
Matched: human-services grants are those whose grantee’s IRS cause code is Human Services. Placed by people below the poverty line in the grantee’s ZIP, averaged from the tracts in that ZIP.

Which US states its grants reach

NY
MA
CA
MD
TN
HI
GA
TX
FL
How this is measured
US grants placed by each grantee’s ZIP, which can differ from where services are delivered. Need from public data (U.S. Census/ACS, CDC PLACES, Eviction Lab, USDA), shown as context about the area, never attributed to the funder’s giving.
03Its grantees
repeat funding

Who it funds again

Organizations funded in more than one year, against those funded once.

74%of every dollar goes to organizations it has funded before.
$165k · 13 repeat orgs$58k to everyone else

13 repeat relationships: 10 still active in FY2026, 3 since wound down; 2 grantees were first funded in FY2026 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

13
13

Total granted

$165k
$57k

Median revenue growth · since first grant

+15%
+54%

Still filing today

100%
62%

New vs renewed · share of each year

In FY2026, 97% of grant dollars renewed an existing relationship; $750 went to new ones.

50%100%’17’18’19’20’21’22’23’24’25’26
RenewedFirst-time

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

’17’18’19’20’21’22’23’24’25’26
EducationHealthAnimalsEnvironmentArts & CulturePhilanthropyOther
How this is measured
First-time means a grantee’s first year in the filing window; renewed means funded in an earlier year too. The renewed share climbs naturally as a portfolio matures, so the signal is a year that bucks it (a wave of new grantees). 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

  • NC
    Noyo Center For Marine Science
    9× · 2018–2026 · $49k · revenue +313%
  • SD
    SKY DOG SANCTUARY INC
    4× · 2022–2025 · $31k · revenue +12%
  • CH
    CHILDRENS HEALTH GUILD
    2× · 2017–2019 · $24k · revenue +15%

Funded once

  • LR
    LITTLE RIVER PILOTS ASSOCIATION
    one grant, 2025 · $13k
  • HM
    HAGGIN MUSEUM
    one grant, 2025 · $10k
  • LS
    Larkin Street Youth Servicesgraduated
    one grant, 2017 · $5k · revenue +90%
How this is measured

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

04Its field

Closest unfunded matches

The nonprofits that most resemble its grantees but are not funded by it, scored along the direction from the rest of the field toward the portfolio. A resemblance in what they say they do, not a recommendation.

1
Marin Humane Society

Marin humane transforms lives through exceptional animal care, humane education, and advocacy. every day, marin humane inspires compassion and positive relationships between people and animals.

Animals
2
Ucsf Foundation Investment Company

The organization provides professional investment management services for endowed gifts and financial assets entrusted to the ucsf foundation.

Education
3
Marine Biological Laboratory

The Marine Biological Laboratory (MBL) is a world-renowned center for biological discovery and training that is notably affiliated with more than 60 Nobel Prize winners. Research is conducted by full-time faculty as well as hundreds of the…

Science & Tech
4
Harvey Mudd College

HMC seeks to educate engineers, scientists, and mathematicians well versed in all of these areas and in the humanities, social sciences and the arts so that they may assume leadership in their fields with a clear understanding of the…

Education
5
Natural History Institute

Natural History Institute is organized to provide leadership and resources for a revitalized practice of natural history that integrates art, science, and humanities to promote the health and well-being of humans and the rest of the…

Arts & Culture
6
San Francisco Bay Bird Observatory

The San Francisco Bay Bird Observatory is dedicated to promote sustainability in the Bay Area and beyond by engaging communities in avian science, habitat restoration, and education.

Environment
7
Marin Academy

Marin academy asks every individual to think, question, and create in an environment of encouragement and compassion, and challenges each person to accept the responsibilities posed by education in a democratic society.

Education
8
Conservation Society of California

Through management of oakland zoo, the conservation society of california deepens connection with animals, saves wildlife, and inspires champions for the natural world.

Animals
9
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
10
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
11
Arc Research Institute

Our mission is to accelerate scientific progress, understand the root causes of disease, and narrow the gap between discoveries and impact on patients.

Health
12
Trustees of Dartmouth College

Dartmouth College educates the most promising students and prepares them for a lifetime of learning and of responsible leadership, through a faculty dedicated to teaching and the creation of knowledge.

Education
How this is measured
The grantee most central to the portfolio’s shape is Lafayette Partners in Education; the most unlike its peers is Art Explorers Inc. 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

24 grantees tracked through their own filings, 2017–2026.

Each grant beside the grantee’s revenue from every source, year by year.

How this is measured

Counted here: distinct organizations funded across 2017 to 2026, not grant rows in a single year, so this will not match the grant count on the cover. 24 of the 29 grantees resolved in that span have returns of their own we could reconcile.

Each grantee is resolved to its own IRS returns. Association, dated; never a causal claim.

0
Load-bearing (≥25% of a budget)
5
Early backer (in before they grew)
24/24
Grantees still filing
17/24
Grew since first funded

Where the money sits, by cause and then by grantee

Noyo Center For Marine Science: $49,000 · AnimalsNoyo Center For Marine ScienceSKY DOG SANCTUARY INC: $31,000 · AnimalsSKY DOG SANCTUARY INC+1 more: $2,250 · AnimalsLITTLE RIVER PILOTS ASSOCIATION: $13,000 · OtherLITTLE RIVER PILOTS ASSOC…THE HEAD ROYCE SCHOOL: $10,000 · OtherTHE HEAD ROYCE SCHOOLHAGGIN MUSEUM: $10,000 · OtherHAGGIN MUSEUMUC BERKELEY FOUNDATION: $5,000 · OtherUC BERKELEY FOUNDATIONWILDCARE: $4,500 · OtherWILDCARECLEAR LAKE MASONIC LIBRARY & MUSEUM FOUNDATION: $4,000 · OtherCLEAR LAKE MASONIC LIBRAR…+4 more: $4,150 · Other+4 moreVanderbilt University: $21,000 · EducationVanderbilt UniversityLafayette Partners in Education: $16,000 · EducationLafayette Partners in E…THE COLLEGE PREPARATORY SCHOOL: $4,000 · EducationTHE COLLEGE PREPARATORY…STEPHEN SILLER TUNNEL TO TOWERS FOUNDATION: $3,000 · EducationSTEPHEN SILLER TUNNEL T…+2 more: $2,000 · EducationCHILDRENS HEALTH GUILD: $23,750 · PhilanthropyCHILDRENS HEA…HAWAII COMMUNITY FOUNDATION: $3,000 · PhilanthropyHAWAII COMMUN…George Mark Childrens Fund: $5,000 · HealthSHRINERS HOSPITALS FOR CHILDREN: $3,000 · HealthOUR JOURNEY INC: $2,000 · HealthPhysicians Committee for Responsible Med: $500 · HealthLarkin Street Youth Services: $5,000 · Human ServicesMendocino Land Trust: $2,500 · EnvironmentINATURALIST: $1,350 · EnvironmentENVIRONMENTAL WORKING GROUP: $250 · Environment
Animals$82,250Other$50,650Education$46,000Philanthropy$26,750Health$10,500Human Services$5,000Environment$4,100

Each grantee by its size and the funder’s share of it; top left is load-bearing

25%50%75%100%$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetNoyo Center For Marine Science: $49,000 over 9y, 2.1% of budgetSKY DOG SANCTUARY INC: $31,000 over 4y, 0.3% of budgetCHILDRENS HEALTH GUILD: $23,750 over 2y, 3.6% of budgetVanderbilt University: $21,000 over 3y, 0.0% of budgetLafayette Partners in Education: $16,000 over 3y, 0.1% of budgetTHE HEAD ROYCE SCHOOL: $10,000 over 2y, 0.0% of budgetLarkin Street Youth Services: $5,000 over 1y, 0.0% of budgetGeorge Mark Childrens Fund: $5,000 over 1y, 0.1% of budgetWILDCARE: $4,500 over 4y, 0.0% of budgetTHE COLLEGE PREPARATORY SCHOOL: $4,000 over 1y, 0.0% of budgetHAWAII COMMUNITY FOUNDATION: $3,000 over 1y, 0.0% of budgetSHRINERS HOSPITALS FOR CHILDREN: $3,000 over 1y, 0.0% of budgetSTEPHEN SILLER TUNNEL TO TOWERS FOUNDATION: $3,000 over 1y, 0.0% of budgetMendocino Land Trust: $2,500 over 2y, 0.1% of budgetTHE MARINE MAMMAL CENTER: $2,250 over 2y, 0.0% of budgetOUR JOURNEY INC: $2,000 over 1y, 1.2% of budgetINATURALIST: $1,350 over 2y, 0.0% of budgetNutritionfactsorg Inc: $1,350 over 2y, 0.0% of budgetArt Explorers Inc: $1,250 over 2y, 0.3% of budgetALLEN-CHASE FOUNDATION DBA EAGLEBROOK SCHOOL: $1,000 over 1y, 0.0% of budgetTRUSTEES OF DEERFIELD ACADEMY: $1,000 over 1y, 0.0% of budgetMendocino Arts Center Inc: $550 over 2y, 0.1% of budget
Grantee by grantee: a decade per organization, before and after funding

A decade per grantee: revenue shaded, grants as bars, all rows on one timeline.

Co-funders

Grantmakers whose grantees overlap with this funder’s far more than size alone predicts. Closer means stronger alignment; arcs show where they also fund each other. Here they form a tightly interlocked group: most of these funders back each other's grantees too.

The Yelp FoundationCommunity Foundation …The Blackbaud Giving …Gs Donor Advised Phil…Vanguard Charitable E…The Pfizer Foundation…Morgan Stanley Global…National Philanthropi…The Bank of America C…American Endowment Fo…Network for GoodAmerican Online Givin…
The Yelp FoundationCA14.9× affinity5 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: The Yelp Foundation · Community Foundation of Mendocino County · The Blackbaud Giving Fund · Gs Donor Advised Philanthropy Fund for Wealth Management Inc · Vanguard Charitable Endowment Program · The Pfizer Foundation Inc · Morgan Stanley Global Impact Funding Trust Inc · National Philanthropic Trust · The Bank of America Charitable Foundation Inc · American Endowment Foundation · Network for Good · American Online Giving Foundation Inc

How this is measured
Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. Overlap is association, not proof of shared intent.

How much its grantees rely on government

Each dot is one organization Charles P Berolzheimer Foundation Inc funds: left to right is the share of its income from government, bottom to top the share from Charles P Berolzheimer Foundation Inc. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 20%0%1%3%5%funder's share of their income ↑0%25%50%75%100%share of the org’s income from government →median 0%
  • Shriners Hospitals for Children: 0% of income from government
no gov moneyreceives it· size = income
2get 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
typical government reliance, FY20–25
How this is measured
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 a grant caused the public funding. Coverage is precision-first, a floor rather than 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 to 24 months.
05Through Plinth

Warm introductions · Powered by PlinthPlus

How do I get to Charles P Berolzheimer Foundation Inc?

Find your warmest path to Charles P Berolzheimer Foundation Inc through trustees and officers whose names appear on both boards. Search for your organization and Plinth traces the shortest route it can evidence.

Each link is a name appearing on two organizations’ public IRS 990 filings, matched on that name and, where the filings support it, on location. A same-state match has geographic support, which is a second matching feature rather than confirmation that the two are one person; a cross-state one is the likeliest to be two people who share a name. Every hop shows its tier, low-confidence and distant paths are held back rather than guessed, and it is worth confirming the person before you use the introduction.

On method. Every financial figure here is read from IRS e-file XML, the funder’s own 990/990-PF, and from the multi-year returns of the 29 grantees we resolved, each linked to its source. Grantee outcomes are each organization’s own program-service reporting (Form 990, Part III), read as association with funding, never as caused by it. Low-confidence name matches are suppressed rather than guessed. How we build these →

How this is measured
Each figure carries one of six labels. Filed is what the funder reported on its 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.

Generated from the IRS Form 990-PF e-file return for fiscal year 2026, released 2026. Filings run roughly 12 to 24 months behind; figures are dated accordingly.

Source object · view filing

Play a game based on Charles P Berolzheimer’s filings →

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 endowment market
who holds foundation money, and what just moved
The camps
funders cluster by geography, not ideology
By state
where grant money is based, and what stays home