Private foundation · EIN 94-2460896

Arrillaga Foundation

Preselected only

Palo Alto, CA

Home › California › Arrillaga Foundation

Tax year 2024 (period ending 2024-12-31) · Filed with IRS 2025 · Data as of 2026-10-24 · View filing on ProPublica · Source: IRS e-file object 202503079349101720
Total assets (EOY)$50,859,228
Grants paid$9,451,000
Typical (median) grant$50,000
Grants listed53
Giving in home state (CA)63%

Grant size distribution

RangeGrants
Under $5K0
$5K–$25K13
$25K–$100K20
$100K+20

Smallest $10,000 · Largest $3,500,000

Geographic focus

CA
63%
NY
16%
RI
5%
HI
5%
MA
4%
VA
3%
TX
2%
PA
1%

Common purposes

researchfinancialendowmentschoolfoodallergystudyprojectconstructionmateocountysheriffofficemarcbecker

Giving history

Tax yearContributions paidTotal assetsGrants listed
2023$3,395,001$31,817,64212
2024$9,451,000$50,859,22853

Years shown are the filings ingested so far; more years are added as additional IRS batches are processed.

How to apply

This foundation checked Part XV line 2 of its 990-PF: it only makes contributions to preselected charitable organizations and does not accept unsolicited requests.

Source: 990-PF Part XV line 2, tax year 2024.

Top recipients (tax year 2024)

RecipientLocationPurposeAmount
San Mateo County Sheriff'S Office FoundationREDWOOD CITY, CACONSTRUCTION OF THE NEW SAN MATEO COUNTY SHERIFF'S OFFICE$3,500,000
The Teak FellowshipNEW YORK, NYTHE MARC E. BECKER ENDOWMENT FOR LEADERSHIP AND PROFESSIONAL DEVELOPMENT$1,000,000
Brown UniversityPROVIDENCE, RIPAID STUDENT LEARNING OPPORTUNITIES$500,000
Lucile Packard Foundation For Children'S HealthPALO ALTO, CADR. JENNY FRANKOVICH'S PANS INFECTION RESEARCH$500,000
Cambodian Children'S FundSANTA MONICA, CAEDUCATIONAL PROGRAMMING$400,000
President And Fellows Of Harvard CollegeBOSTON, MAHARVARD T.H. CHAN SCHOOL OF PUBLIC HEALTH - FOOD ALLERGY STUDY & RESEARCH$350,000
Caf America - Mca Australia Mehretu ExhibitionALEXANDRIA, VAGENERAL SUPPORT$264,000
West Maui Improvement FoundationLAHAINA, HIOLOWALU FIRESTATION FUNDRAISER$250,000
The Ucla FoundationLOS ANGELES, CATHE RAPE TREATMENT CENTER - GENERAL SUPPORT$250,000
Ready To SucceedSANTA MONICA, CAREADY TO SUCCEED ALUMNI AND EARLY CAREER ENGAGEMENT PROGRAM$200,000
Vision To LearnLOS ANGELES, CAGENERAL SUPPORT$200,000
Silicon Valley Social Venture Fund - Sv2REDWOOD CITY, CAGENERAL OPERATING$150,000
QuestbridgePALO ALTO, CAFEASIBILITY STUDY PROGRAM$150,000
The Teak FellowshipNEW YORK, NYCATS AND SWIM PROGRAMS$100,000
Downtown Women'S CenterLOS ANGELES, CAGENERAL SUPPORT$100,000
Israel Tennis Centers Foundation IncNEW YORK, NYGENERAL SUPPORT$100,000
Loyola Marymount UniversityLOS ANGELES, CALOYOLA PROJECT FOR THE INNOCENT PROGRAM$100,000
Maccabi Usa IncPHILADELPHIA, PAFINANCIAL AID ENDOWMENT$100,000
StorycorpsBROOKLYN, NYGENERAL SUPPORT$100,000
Ballroom MarfaMARFA, TXGENERAL SUPPORT$100,000
Silicon Valley Social Venture Fund - Sv2REDWOOD CITY, CAGENERAL OPERATING$85,000
Al Wooten Jr Youth CenterLOS ANGELES, CAGENERAL SUPPORT$50,000
Association To Benefit ChildrenNEW YORK, NYGENERAL SUPPORT$50,000
Boston Children'S HospitalBOSTON, MARESEARCH FOR GUT BRAIN INTERACTION$50,000
Cedars-Sinai Medical CenterLOS ANGELES, CARESEARCH IN GUT MICROBIOME$50,000
Want an alert when this foundation opens to applications? Saved lists, alerts and CSV exports are coming in Premium.Join the Premium waitlist