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California · Private foundation

Arrillaga 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.

$9.5M
Granted FY2024(still arriving)
53
Grants FY2024
9
Organizations funded FY2023
44%
First-time grantees FY2023
Read the full brief
Median grant, FY2024
$50,000
Largest grant, FY2024
$3,500,000
Organizations funded a year
1 to 14
FY2017 to FY2023
States reached, FY2024
9
Total assets, FY2024
$51M
Applications
Preselected organizations only
Per its most recent filing; check its own site

How open it is to new grantees

In FY2023, 44% of the organizations Arrillaga Foundation funded were first-time grantees, receiving 99% of its grant dollars.

New vs renewed · share of each year

In FY2023, 1% of grant dollars renewed an existing relationship; $7.0M 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
Human ServicesEducationHealthArts & CulturePublic Safety & DisasterMembership BenefitOther
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
FY2024still arriving47$8.4M91%
FY20239$7.1M44%
FY20227$14M43%
FY202111$10M55%
FY202014$1.5M86%
FY20198$116k75%
FY20182$35k100%
FY20171$1kn/a
99% classified

What it funded, over time

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

Education$25MPublic Safety & Disaster$11MCrime & Legal$3.5MHealth$2.1MReligion$1.0MArts & Culture$702kInternational$550kCommunity Improvement$420kOther$0

Where its grants go

Grant dollars by states, across the years we hold.

Which US states its grants reach

WA
NY
MA
PA
RI
CA
VA
HI
TX

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
Menlo College$13,498,574417%
'Iolani School$5,000,00015%
San Mateo County Sheriff's Office Foundation$3,500,0001100%
Lucile Packard Foundation for Children's Health$1,500,00021%
The Teak Fellowship Inc$1,175,000311%
The Daniel R Sayre Memorial Foundation$1,000,00016%
Chabad of Greater South Bay$1,000,0001n/a
Cambodian Childrens Fund$400,00014%
West Maui Improvement Foundation$250,0001n/a
Silicon Valley Social Venture Fund - Sv2$235,000110%
Show all 67 grantees
All grantees of Arrillaga Foundation by total granted
GranteeTotal grantedYearsShare of their budget
Menlo College$13,498,574417%
'Iolani School$5,000,00015%
San Mateo County Sheriff's Office Foundation$3,500,0001100%
Lucile Packard Foundation for Children's Health$1,500,00021%
The Teak Fellowship Inc$1,175,000311%
The Daniel R Sayre Memorial Foundation$1,000,00016%
Chabad of Greater South Bay$1,000,0001n/a
Cambodian Childrens Fund$400,00014%
West Maui Improvement Foundation$250,0001n/a
Silicon Valley Social Venture Fund - Sv2$235,000110%
Ready to Succeed$200,00015%
Vision to Learn$200,00011%
The Ballroom Cultural Arts Foundation$147,0001n/a
Morningside High Monarchs Alumni Association$100,0001n/a
Maccabi USA Inc$100,00012%
Israel Tennis Centers Foundation Inc$100,00011%
Sunnyvale Community Services$100,00010%
Downtown Women's Center$100,00010%
Loyola Marymount University$100,00010%
Storycorps Inc$100,00011%
Hawaii Foodbank Inc$50,00010%
University of Washington Foundation$50,00010%
Green Envelope Fund$50,00057%
Kapi'olani Health Foundation$50,00010%
San Francisco Ballet Association$50,00020%
Harvard-Westlake School$50,00010%
Al Wooten Jr Youth Center$50,00014%
Association to Benefit Children$50,00010%
Cedars-Sinai Medical Center$50,00010%
Pacific American Foundation$50,00011%
The Peninsula Bridge Program$50,00011%
Ronald McDonald House Charities of Hawaii Inc$35,00011%
Chp 11-99 Foundation$35,00020%
Vista Center for the Blind and Visually Impaired$30,00031%
Jasper Ridge Farm$30,00032%
Punahou School$30,00010%
Embarcadero Media Foundation$30,00032%
Our Brothers Home$30,00039%
San Francisco General Hospital Foundation$25,00010%
Legal Outreach Inc$25,00011%
The John Thomas Dye School$25,00010%
Determined to Succeed$25,00013%
A Tavola Together Foundation$25,00017%
Silicon Valley Creates$25,00011%
Cerebral Palsy Soccer Inc$25,000110%
Food Allergy Research & Education Inc$25,00010%
Brooklyn Debate League Inc$20,00018%
World Connect Inc$20,00011%
Hawaii Performing Arts Company Ltd$15,00011%
Achieve Tahoe$15,00011%
Accessurf Hawaii Inc$15,00011%
Kids & Art Foundation$15,00014%
Canine Companions for Independence Inc$10,00010%
Uc Santa Barbara Foundation$10,00010%
Aalii Mentoring$10,000110%
Palo Alto Community Child Care$10,00010%
Education Pioneers$10,00010%
Operation Freedom Paws$10,00011%
The Britton Fund$10,00019%
Caminar$10,00010%
Pacific Legal Foundation$10,00020%
American Society of Cataract and Refractive Surgery Foundation$10,00011%
Rich May Foundation$5,00013%
Lifemoves$5,00010%
Carpinteria Education Foundation Inc$1,00010%
Sutter Bay Medical Foundation$1,00010%
Westside Food Bank$1,00010%

What it could do for these grantees

Plus 10 recipients with no EIN on record ($11M), not named here.

Where it is load-bearing

Arrillaga Foundation supplied at least a quarter of the budget for 1 of its grantees at some point. The chart plots its 63 largest grantees; load-bearing ones sit top left.

25%50%75%100%$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetMenlo College: $13,498,574 over 4y, 17% of budget'Iolani School: $5,000,000 over 1y, 5.0% of budgetSan Mateo County Sheriff's Office Foundation: $3,500,000 over 1y, 100% of budgetLucile Packard Foundation for Children's Health: $1,500,000 over 2y, 0.8% of budgetThe Teak Fellowship Inc: $1,175,000 over 3y, 11% of budgetThe Daniel R Sayre Memorial Foundation: $1,000,000 over 1y, 5.6% of budgetCambodian Childrens Fund: $400,000 over 1y, 3.6% of budgetSilicon Valley Social Venture Fund - Sv2: $235,000 over 1y, 10% of budgetReady to Succeed: $200,000 over 1y, 4.6% of budgetVision to Learn: $200,000 over 1y, 0.9% of budgetMaccabi USA Inc: $100,000 over 1y, 2.4% of budgetIsrael Tennis Centers Foundation Inc: $100,000 over 1y, 1.2% of budgetSunnyvale Community Services: $100,000 over 1y, 0.5% of budgetDowntown Women's Center: $100,000 over 1y, 0.3% of budgetLoyola Marymount University: $100,000 over 1y, 0.0% of budgetStorycorps Inc: $100,000 over 1y, 0.7% of budgetHawaii Foodbank Inc: $50,000 over 1y, 0.1% of budgetUniversity of Washington Foundation: $50,000 over 1y, 0.0% of budgetGreen Envelope Fund: $50,000 over 5y, 6.8% of budgetKapi'olani Health Foundation: $50,000 over 1y, 0.4% of budgetSan Francisco Ballet Association: $50,000 over 2y, 0.1% of budgetHarvard-Westlake School: $50,000 over 1y, 0.0% of budgetAl Wooten Jr Youth Center: $50,000 over 1y, 4.5% of budgetAssociation to Benefit Children: $50,000 over 1y, 0.2% of budgetCedars-Sinai Medical Center: $50,000 over 1y, 0.0% of budgetPacific American Foundation: $50,000 over 1y, 1.3% of budgetThe Peninsula Bridge Program: $50,000 over 1y, 0.9% of budgetRonald McDonald House Charities of Hawaii Inc: $35,000 over 1y, 1.1% of budgetChp 11-99 Foundation: $35,000 over 2y, 0.2% of budgetVista Center for the Blind and Visually Impaired: $30,000 over 3y, 0.6% of budgetJasper Ridge Farm: $30,000 over 3y, 2.4% of budgetPunahou School: $30,000 over 1y, 0.0% of budgetEmbarcadero Media Foundation: $30,000 over 3y, 1.6% of budgetOur Brothers Home: $30,000 over 3y, 9.2% of budgetSan Francisco General Hospital Foundation: $25,000 over 1y, 0.1% of budgetLegal Outreach Inc: $25,000 over 1y, 0.9% of budgetThe John Thomas Dye School: $25,000 over 1y, 0.1% of budgetDetermined to Succeed: $25,000 over 1y, 3.1% of budgetA Tavola Together Foundation: $25,000 over 1y, 6.6% of budgetSilicon Valley Creates: $25,000 over 1y, 0.8% of budgetCerebral Palsy Soccer Inc: $25,000 over 1y, 9.7% of budgetFood Allergy Research & Education Inc: $25,000 over 1y, 0.1% of budgetBrooklyn Debate League Inc: $20,000 over 1y, 8.0% of budgetWorld Connect Inc: $20,000 over 1y, 0.6% of budgetHawaii Performing Arts Company Ltd: $15,000 over 1y, 1.0% of budgetAchieve Tahoe: $15,000 over 1y, 0.8% of budgetAccessurf Hawaii Inc: $15,000 over 1y, 1.3% of budgetKids & Art Foundation: $15,000 over 1y, 3.9% 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 63.

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.

Silicon Valley Community FoundationCA23.7× affinity17 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Silicon Valley Community Foundation · Jewish Community Federation of San Francisco the Peninsula Marin & Sonoma · The David and Lucile Packard Foundation · The Palo Alto Community Fund · Los Altos Mountain View Community Foundation · Atherton Family Foundation · Gs Donor Advised Philanthropy Fund for Wealth Management Inc · Bright Funds Foundation · McInerny Foundation-- · Morgan Stanley Global Impact Funding Trust Inc · Tosa Foundation · First Insurance Company of Hawaii Charitable 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 Arrillaga Foundation with peer funders

Warm introductions · Powered by PlinthPlus

How do I get to Arrillaga Foundation?

Find your warmest path to Arrillaga Foundation 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.

About Arrillaga Foundation

How much does Arrillaga Foundation give?
Arrillaga Foundation reported 53 grants totaling $9,451,000 in its FY2024 IRS filing. It funded between 1 and 14 organizations a year over FY2017 to FY2023.
What does Arrillaga Foundation fund?
By grant dollars over FY2017 to FY2024, its largest causes are Education (56%), Public Safety & Disaster (24%), Crime & Legal (8%).
Who are Arrillaga Foundation's largest grantees?
By total granted over FY2017 to FY2024: Menlo College ($13M), 'Iolani School ($5.0M), San Mateo County Sheriff's Office Foundation ($3.5M).
Does Arrillaga Foundation fund new organizations?
In FY2023, 44% of the organizations it funded were first-time grantees.
Does Arrillaga Foundation accept unsolicited applications?
Its most recent filing reports that it funds preselected organizations and does not take unsolicited requests. Check the foundation's own site before ruling it out.
Which funders back the same organizations as Arrillaga Foundation?
Its strongest co-funders, measured against what their size predicts, include Silicon Valley Community Foundation, Jewish Community Federation of San Francisco the Peninsula Marin & Sonoma, The David and Lucile Packard Foundation.
Where is Arrillaga Foundation based?
Arrillaga Foundation 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 82 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 2024, released 2024. Filings run roughly 12 to 24 months behind; figures are dated accordingly.

Source object · view filing

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