· Private foundation
The Endurance Fund
Its FY2024 filing reports that it accepted unsolicited grant applications.
Read this first · the figures below need context
53% of The Endurance Fund’s FY2024 grant dollars went to Marin Community Foundation, not to grantees.
Its money now reaches organizations through that sponsor, which does not report who recommended each grant. FY2024 names 30 organizations directly, so a portfolio cannot be read from it. Everything below is therefore FY2023, the last year The Endurance Fund named its own grantees at scale: 18 organizations, $260k. It is dated, not current.
Organizations named directly on the return
Amber years are those where most dollars went to a sponsor.
What you funded, over time
Every grant placed by its stated purpose and the recipient’s mission, by year — across FY2017–2024.
Where the money goes
Your grants by size, and where they go.
By grant size · FY2023
- Under $10k24 grants · $51k
- $10k–50k4 grants · $50k
- $50k–250k3 grants · $160k
| Recipient | Amount |
|---|---|
| Vanguard Charitable Program | $60,000 |
| San Geronimo Valley Community Cente | $50,000 |
| Individual grant recipient | $50,000 |
| San Geronimo Valley Community Cente | $17,400 |
| San Geronimo Valley Community Cente | $12,363 |
| San Geronimo Valley Community Cente | $10,000 |
| Lagunitas School Foundation - LEAP | $10,000 |
| San Geronimo Valley Community Cente | $8,177 |
| Branson School | $5,000 |
| Trustees for Alaska | $5,000 |
| Marin Country Day School | $5,000 |
| Pamona College | $5,000 |
| San Geronimo Valley Lions | $4,500 |
| San Geronimo Valley Community Cente | $2,736 |
| Cystic Fibrosis Foundation | $2,500 |
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 (FY17–24, $24k) land where the poverty rate runs at 8%, against an area that typically sits at 10%. 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.
And the relationships you keep tend to grow: grantees you re-up on have seen median revenue of +61% since the first grant, against +27% for the ones you funded once.
51 repeat relationships — 21 still active in FY2023, 30 since wound down; 13 grantees were first funded in FY2023 (too recent to call). Read against FY2023, the last year this funder named its own grantees directly; its giving has since run through a sponsor, which reports no donor behind each grant.
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 FY2024, 100% of grant dollars renewed an existing relationship; $6k 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
- SGSan Geronimo Valley Community Center7× · 2017–2024 · $526k · revenue +61%
- TPThe Pacific Forest Trust Incorporated5× · 2017–2024 · $93k · revenue +293%
- 1D10000 DEGREES2× · 2020–2021 · $35k · revenue +105%
Funded once
- MHMeli Hua Fundone grant, 2021 · $30k
- TGThe Granite Fundone grant, 2021 · $30k
BIRD ALLIANCE OF OREGON INCgraduatedone grant, 2017 · $10k · revenue +99%
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.
The union of concerned scientists puts rigorous, independent science into action, developing solutions and advocating for a healthy, safe, and just future.
The aquarium of the pacific's mission is to instill a sense of wonder, respect, and stewardship for the pacific ocean, its inhabitants, and ecosystems.
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 San Francisco Bay Bird Observatory is dedicated to the conservation of birds and their habitats through science and outreach.
To promote philanthropy to make santa cruz county a better place to live, now and in the future.we bring together people, ideas, and resources to inspire philanthropy and accomplish great things.
Provide an independent forum for those who dare to read, think, speak, and write to advance the professional, literary, and scientific understanding of sea power and other issues critical to global security.
The foundation's mission is to improve the oral health of all californians by supporting the dental profession and its efforts to meet community needs.
The california dental association is committed to the success of our members in service to their patients and the public.
The bac is committed to provide excellence in design education grounded in practice and accessible to diverse communities.
The npr foundation ("foundation") is organized and operated exclusively for the benefit of its sole supported organization, national public radio, inc. ("npr inc."). the foundation supports npr inc. through various activities such as…
The organization provides professional investment management services for endowed gifts and financial assets entrusted to the ucsf foundation.
To lead, serve and collaborate to mobilize enduring philanthropy for a better arizona.
For reference, the grantee most central to the portfolio’s shape is Jewish Community Federation of San Francisco the Peninsula Marin & Sonoma and the most unlike its peers is Signal Foundation. 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.
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 45 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) — 0% of your grantees by number, and just 0% 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.
68 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. 68 of the 90 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 MARIN COMMUNITY FOUNDATION ↗
- Who funds San Geronimo Valley Community Center ↗
- Who funds The Pacific Forest Trust Incorporated ↗
- Who funds MARIN AGRICULTURAL LAND TRUST ↗
- Who funds 10000 DEGREES ↗
- Who funds ALASKA CONSERVATION FOUNDATION ↗
- Who funds POMONA COLLEGE ↗
- Who funds THE BRANSON SCHOOL ↗
- Who funds MARIN COUNTRY DAY SCHOOL ↗
- Who funds KINGSWOOD OXFORD SCHOOL INC ↗
- Who funds Cold Climate Housing Research Center ↗
- Who funds TRUSTEES FOR ALASKA ↗
- Who funds BIRD ALLIANCE OF OREGON INC ↗
- Who funds NEW VENTURE FUND ↗
- Who funds BERNARD OSHER MARIN JEWISH COMMUNITY CENTER ↗
- Who funds REDWOOD EMPIRE FOOD BANK ↗
- Who funds KQED INC ↗
- Who funds EARTHJUSTICE ↗
- Who funds SAN FRANCISCO FOOD BANK ↗
- Who funds West Marin Senior Services ↗
- Who funds PLANNED PARENTHOOD FEDERATION OF AMERICA INC ↗
- Who funds HILLSBOROUGH SCHOOLS FOUNDATION ↗
- Who funds Vivalon ↗
- Who funds AMERICAN CIVIL LIBERTIES UNION FOUNDATION INC ↗
- Who funds MOUNTAIN PLAY ASSOCIATION ↗
- Who funds CYSTIC FIBROSIS FOUNDATION ↗
- Who funds ST VINCENT DE PAUL SOCIETY DISTRICT COUNCIL OF MARIN COUNTY ↗
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: Marin Community Foundation · Leonard & Beryl Buck Foundation · The San Francisco Foundation · Jewish Community Federation of San Francisco the Peninsula Marin & Sonoma · McNabb Foundation · Hartford Foundation for Public Giving · Hobsonlucas Family Foundation · Gordon E and Betty I Moore Foundation · The Jolson Family Foundation · Harbor Point Charitable Foundation · Fenwick Foundation · Ibm International 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 The Endurance Fund 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.
- Oregon Coast Aquarium Inc — 24% of income from government
- Berkshire Theatre Group Inc — 1% of income from government
- Jacob's Pillow Dance Festival Inc — 1% of income from government
- Bird Alliance of Oregon Inc — 0% of income from government
- Kingswood Oxford School Inc — 0% of income from government
- Oregon Shakespeare Festival Association Inc — 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.