· Private foundation
Charles P Berolzheimer Foundation Inc
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.
What you funded, over time
Every grant placed by its stated purpose and the recipient’s mission, by year — across FY2017–2025.
Where the money goes
Your grants by size, and where they go.
By grant size · FY2025
- Under $10k4 grants · $11k
- $10k–50k4 grants · $44k
| Recipient | Amount |
|---|---|
| LITTLE RIVER PILOTS ASSOCIATION | $13,000 |
| SKYDOG SANCTUARY | $11,000 |
| HAGGIN MUSEUM | $10,000 |
| VANDERBILT UNIVERSITY | $10,000 |
| CLEAR LAKE MASONIC LIBRARY & MUSEUM FOUNDATION | $4,000 |
| THE COLLEGE PREPARATORY SCHOOL | $4,000 |
| NOYO CENTER FOR MARINE SCIENCE | $2,000 |
| NAMASTE | $1,000 |
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.
Your 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. Your grants skew toward lower-need ZIPs.
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
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.
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.
7 repeat relationships — 3 still active in FY2025, 4 since wound down; 5 grantees were first funded in FY2025 (too recent to call).
How the two cohorts compare
Organizations
Total granted
Median revenue growth · since first grant
Still filing today
New vs renewed · share of each year
In FY2025, 42% of grant dollars renewed an existing relationship; $32k went to new ones.
Where new relationships form · theme of each grantee’s first grant
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
- NCNoyo Center For Marine Science8× · 2018–2025 · $43k · revenue +313%
- SDSKY DOG SANCTUARY INC4× · 2022–2025 · $31k · revenue +12%
- CHCHILDRENS HEALTH GUILD2× · 2017–2019 · $24k · revenue +15%
Funded once
- LSLarkin Street Youth Servicesgraduatedone grant, 2017 · $5k · revenue +90%
- UBUC BERKELEY FOUNDATIONone grant, 2017 · $5k
- GMGeorge Mark Childrens Fundgraduatedone grant, 2021 · $5k · revenue +54%
Repeat = funded in two or more distinct years; growth and survival are read from each grantee’s own subsequent IRS filings.
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.
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.
The organization provides professional investment management services for endowed gifts and financial assets entrusted to the ucsf foundation.
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.
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…
The San Francisco Bay Bird Observatory is dedicated to the conservation of birds and their habitats through science and outreach.
A private school that cultivates and celebrates the intellectual, imaginative, and humanitarian promise of each student in a community that practices mutual respect, embraces diversity, and inspires passion for learning.
At san francisco friends school, students learn in a community grounded in the quaker values of reflection, integrity, peaceful problem-solving and stewardship. our teachers challenge students with a dynamic curriculum that inspires…
We cultivate the boundless potential of highly gifted children, nurture their passions and talents, and develop a diverse community of creative and constructive lifelong learners.
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…
Guided by the principles of academic rigor and diversity, the international school of san francisco offers programs of study in french and english to prepare its graduates for a world in which the ability to think critically and to…
The waverly school is a nonsectarian, coeducational, college preparatory progressive day school that spans preschool through high school. it is fully accredited by the western association of school and colleges and the california…
The institution provides educational instruction and activities to students ranging from preschool through 8th grade.
For reference, the grantee most central to the portfolio’s shape is Lafayette Partners in Education and 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.
Your grantees are a median of 30 years old; the field is 14. You back the established end — and your money leans older still.
The field is 24% startups (under 5 years old) — 9% of your grantees by number, and just 1% of your money.
The orgs you fund almost never close — 0.0% lost their exemption, against 14% of the field you don’t fund.
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.
22 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. 22 of the 27 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.
Where your money sits — by cause, then by grantee
Each org by its size and your share of it — top-left is where you’re load-bearing
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 Noyo Center For Marine Science ↗
- Who funds SKY DOG SANCTUARY INC ↗
- Who funds CHILDRENS HEALTH GUILD ↗
- Who funds Lafayette Partners in Education ↗
- Who funds Vanderbilt University ↗
- Who funds THE HEAD ROYCE SCHOOL ↗
- Who funds Larkin Street Youth Services ↗
- Who funds George Mark Childrens Fund ↗
- Who funds THE COLLEGE PREPARATORY SCHOOL ↗
- Who funds WILDCARE ↗
- Who funds SHRINERS HOSPITALS FOR CHILDREN ↗
- Who funds STEPHEN SILLER TUNNEL TO TOWERS FOUNDATION ↗
- Who funds HAWAII COMMUNITY FOUNDATION ↗
- Who funds OUR JOURNEY INC ↗
- Who funds THE MARINE MAMMAL CENTER ↗
- Who funds Mendocino Land Trust ↗
- Who funds ALLEN-CHASE FOUNDATION DBA EAGLEBROOK SCHOOL ↗
- Who funds Art Explorers Inc ↗
- Who funds TRUSTEES OF DEERFIELD ACADEMY ↗
- Who funds Nutritionfactsorg Inc ↗
- Who funds INATURALIST ↗
- Who funds Mendocino Arts 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.
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
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 Charles P Berolzheimer Foundation Inc 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.
- Shriners Hospitals for Children — 0% of income from government
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.
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.