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California · Private foundation

The Endurance Fund

Its FY2024 filing reports that it accepted unsolicited grant applications.

$260k
Granted FY2023
31
Grants FY2023
25
Organizations funded FY2023
16%
First-time grantees FY2023
Read the full brief

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

33
’17
31
’18
6
’19
9
’20
24
’21
25
’22
18
’23
30
’24

Amber years are those where most dollars went to a sponsor.

Median grant, FY2023
$2,000
Largest grant, FY2023
$60,000
Organizations funded a year
10 to 40
FY2017 to FY2023
States reached, FY2023
8
Applications
Takes unsolicited applications
Per its most recent filing; check its own site

How open it is to new grantees

In FY2023, 16% of the organizations The Endurance Fund funded were first-time grantees, receiving 2% of its grant dollars.

New vs renewed · share of each year

In FY2023, 98% of grant dollars renewed an existing relationship; $6k went to new ones.

50%100%’18’19’20’21’22’23
RenewedFirst-time

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

’18’19’20’21’22’23
EducationArts & CultureHuman ServicesEnvironmentFood & NutritionCivil RightsOther
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.
The numbers by year
Fiscal yearOrganizations fundedTo those organizationsFirst-time grantees
FY202325$260k16%
FY202231$384k26%
FY202129$285k34%
FY202011$197k36%
FY201910$262k10%
FY201838$279k24%
FY201740$219kn/a
98% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2024.

Philanthropy$6.8MHuman Services$550kEnvironment$228kEducation$158kHealth$139kRecreation & Sports$71kFood & Nutrition$53kPublic Safety & Disaster$40kOther$0

Where its grants go

Grant dollars by states, across the years we hold.

Which US states its grants reach

AK
ME
WA
IL
MI
NY
MA
OR
PA
CT
RI
CA
MD
DC
AL
FL

Top grantees

Largest recipients by total granted, FY2017 to FY2024, and the share of each one’s budget the grants supplied at peak.

GranteeTotal grantedYearsShare of their budget
San Geronimo Valley Community Center$525,83277%
The Pacific Forest Trust Incorporated$92,50051%
San Geronimo Valley Emergency Fund$38,8415n/a
Marin Agricultural Land Trust$38,00040%
10000 Degrees$35,00020%
Alaska Conservation Foundation$20,08530%
Kingswood Oxford School Inc$20,00020%
Pomona College$20,00040%
Marin Country Day School$20,00040%
The Branson School$20,00040%
Show all 66 grantees
All grantees of The Endurance Fund by total granted
GranteeTotal grantedYearsShare of their budget
San Geronimo Valley Community Center$525,83277%
The Pacific Forest Trust Incorporated$92,50051%
San Geronimo Valley Emergency Fund$38,8415n/a
Marin Agricultural Land Trust$38,00040%
10000 Degrees$35,00020%
Alaska Conservation Foundation$20,08530%
Kingswood Oxford School Inc$20,00020%
Pomona College$20,00040%
Marin Country Day School$20,00040%
The Branson School$20,00040%
Cold Climate Housing Research Center$17,49621%
Trustees for Alaska$14,00040%
Bird Alliance of Oregon Inc$10,00010%
Bernard Osher Marin Jewish Community Center$9,50050%
Redwood Empire Food Bank$9,25080%
Kqed Inc$6,20030%
Earthjustice$6,00040%
San Francisco Food Bank$6,00080%
West Marin Senior Services$5,75080%
Planned Parenthood Federation of America Inc$5,00010%
Hillsborough Schools Foundation$4,80020%
Vivalon$4,57050%
American Civil Liberties Union Foundation Inc$4,00040%
Mountain Play Association$3,75070%
St Vincent de Paul Society District Council of Marin County$3,00030%
Cystic Fibrosis Foundation$3,00020%
The Alaska Center Education Fund$2,00010%
Ross Valley Players$1,75040%
University of Chicago$1,50020%
Dominican University of California$1,50010%
National Parks Conservation Association$1,50040%
Wikimedia Foundation Inc$1,25030%
Marin Symphony Association$1,25040%
Nicasio Volunteer Fire Dept$1,24050%
Marin Audubon Society$1,00020%
Laguna De Santa Rosa Foundation$1,00020%
Natural Resources Defense Council Inc$1,00010%
Interlochen Center for the Arts$1,00010%
Parent Services Project$1,00010%
Kidnuz$1,00011%
North Bay BMX Inc$1,00010%
Nicasio Land Preserve$90041%
Habitat for Humanity of Sonoma County$75020%
California Film Institute$53020%
The Center for Investigative Reporting formrly Foundation for National Progress$50010%
Environmental Defense Fund Incorporated$50020%
Southern Poverty Law Center Inc$50010%
Jacob's Pillow Dance Festival Inc$50020%
St Helena Montessori School Inc$50010%
Marin Civic Ballet Association Dba Marin Ballet$5002n/a
Oregon Shakespeare Festival Association Inc$50010%
Valley Toys and Joys$4002n/a
Humane Society of Sonoma County$25010%
The Trust for Public Land$25010%
Southern Shakespeare Company$25010%
Bay Area Ridge Trail Council$25020%
Barrington Stage Company Inc$25010%
Nicasio Historical Society$2001n/a
American Lung Association$20020%
Oregon Coast Aquarium Inc$1951n/a
Signal Foundation$12010%
Berkshire Theatre Group Inc$10010%
Committee to Protect Journalists Inc$10010%
Maine Rockweed Coalition$1001n/a
Art Omi Inc$10010%
Grist Magazine Inc$5010%

What it could do for these grantees

Plus 19 recipients with no EIN on record ($3.8M), not named here.

Where it is load-bearing

Each grantee by its size and the share of its budget The Endurance Fund supplied at peak.

25%50%75%100%$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetSan Geronimo Valley Community Center: $525,832 over 7y, 7.5% of budgetThe Pacific Forest Trust Incorporated: $92,500 over 5y, 0.6% of budgetMarin Agricultural Land Trust: $38,000 over 4y, 0.4% of budget10000 Degrees: $35,000 over 2y, 0.2% of budgetAlaska Conservation Foundation: $20,085 over 3y, 0.4% of budgetKingswood Oxford School Inc: $20,000 over 2y, 0.0% of budgetPomona College: $20,000 over 4y, 0.0% of budgetMarin Country Day School: $20,000 over 4y, 0.0% of budgetThe Branson School: $20,000 over 4y, 0.0% of budgetCold Climate Housing Research Center: $17,496 over 2y, 0.8% of budgetTrustees for Alaska: $14,000 over 4y, 0.3% of budgetBird Alliance of Oregon Inc: $10,000 over 1y, 0.3% of budgetBernard Osher Marin Jewish Community Center: $9,500 over 5y, 0.0% of budgetRedwood Empire Food Bank: $9,250 over 8y, 0.0% of budgetKqed Inc: $6,200 over 3y, 0.0% of budgetEarthjustice: $6,000 over 4y, 0.0% of budgetSan Francisco Food Bank: $6,000 over 8y, 0.0% of budgetWest Marin Senior Services: $5,750 over 8y, 0.1% of budgetPlanned Parenthood Federation of America Inc: $5,000 over 1y, 0.0% of budgetHillsborough Schools Foundation: $4,800 over 2y, 0.1% of budgetVivalon: $4,570 over 5y, 0.0% of budgetAmerican Civil Liberties Union Foundation Inc: $4,000 over 4y, 0.0% of budgetMountain Play Association: $3,750 over 7y, 0.1% of budgetSt Vincent de Paul Society District Council of Marin County: $3,000 over 3y, 0.0% of budgetCystic Fibrosis Foundation: $3,000 over 2y, 0.0% of budgetThe Alaska Center Education Fund: $2,000 over 1y, 0.1% of budgetRoss Valley Players: $1,750 over 4y, 0.2% of budgetUniversity of Chicago: $1,500 over 2y, 0.0% of budgetDominican University of California: $1,500 over 1y, 0.0% of budgetNational Parks Conservation Association: $1,500 over 4y, 0.0% of budgetWikimedia Foundation Inc: $1,250 over 3y, 0.0% of budgetMarin Symphony Association: $1,250 over 4y, 0.0% of budgetNicasio Volunteer Fire Dept: $1,240 over 5y, 0.2% of budgetMarin Audubon Society: $1,000 over 2y, 0.2% of budgetLaguna De Santa Rosa Foundation: $1,000 over 2y, 0.1% of budgetNatural Resources Defense Council Inc: $1,000 over 1y, 0.0% of budgetInterlochen Center for the Arts: $1,000 over 1y, 0.0% of budgetParent Services Project: $1,000 over 1y, 0.2% of budgetKidnuz: $1,000 over 1y, 1.4% of budgetNorth Bay BMX Inc: $1,000 over 1y, 0.5% of budgetNicasio Land Preserve: $900 over 4y, 1.1% of budgetHabitat for Humanity of Sonoma County: $750 over 2y, 0.0% of budgetCalifornia Film Institute: $530 over 2y, 0.0% of budgetThe Center for Investigative Reporting formrly Foundation for National Progress: $500 over 1y, 0.0% of budgetEnvironmental Defense Fund Incorporated: $500 over 2y, 0.0% of budgetSouthern Poverty Law Center Inc: $500 over 1y, 0.0% of budgetJacob's Pillow Dance Festival Inc: $500 over 2y, 0.0% of budgetSt Helena Montessori School Inc: $500 over 1y, 0.0% of budget

Tap a dot to name the grantee.

How this is measured
Share of budget is the funder’s grant in a year over the grantee’s total revenue that year, at its highest across the years we hold; revenue is from all sources. Only grantees confirmed against their own filings, whose grants do not exceed their revenue, are plotted: the largest 60.

Nonprofits that may fit its grantmaking

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.

Marin Community FoundationCA42.7× affinity22 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

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

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.

Compare The Endurance Fund with peer funders

About The Endurance Fund

How much does The Endurance Fund give?
The Endurance Fund reported 31 grants totaling $260,266 in its FY2023 IRS filing. It funded between 10 and 40 organizations a year over FY2017 to FY2023.
What does The Endurance Fund fund?
By grant dollars over FY2017 to FY2024, its largest causes are Philanthropy (84%), Human Services (7%), Environment (3%).
Who are The Endurance Fund's largest grantees?
By total granted over FY2017 to FY2024: San Geronimo Valley Community Center ($526k), The Pacific Forest Trust Incorporated ($93k), San Geronimo Valley Emergency Fund ($39k).
Does The Endurance Fund fund new organizations?
In FY2023, 16% of the organizations it funded were first-time grantees.
Does The Endurance Fund accept unsolicited applications?
Its most recent filing reports that it accepts unsolicited grant applications.
Which funders back the same organizations as The Endurance Fund?
Its strongest co-funders, measured against what their size predicts, include Marin Community Foundation, Leonard & Beryl Buck Foundation, The San Francisco Foundation.
Where is The Endurance Fund based?
The Endurance Fund is based in CA.

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 90 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 2023, released 2023. Filings run roughly 12 to 24 months behind; figures are dated accordingly.

Source object · view filing

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