Arrillaga Foundation
Invitation OnlyPalo Alto, California · EIN 94-2460896 · Private foundation
Grants paid (2024)$9.5M
Organizations funded53
Typical grant$50,000
Total assets$50.9M
Half of its grants to organizations were between $25,000 and $100,000.
From the return
How to apply
On its return for tax year 2024 the foundation checked the box saying it only makes contributions to preselected charitable organizations and does not accept unsolicited requests for funds.
What it funds
Share of grant lines on the latest return, classified from the purpose each grant states.
Where it gives
54% of grants went outside California.
Grants paid in tax year 2024
| Recipient | Location | Purpose | Amount |
|---|---|---|---|
| San Mateo County Sheriff's Office Foundation | Redwood City, CA | Construction of the new san mateo county sheriff's office | $3,500,000 |
| The Teak Fellowship | New York, NY | The marc E. becker endowment for leadership and professional development | $1,000,000 |
| Brown University | Providence, RI | Paid student learning opportunities | $500,000 |
| Lucile Packard Foundation for Children's Health | Palo Alto, CA | Dr. jenny frankovich's pans infection research | $500,000 |
| Cambodian Children's Fund | Santa Monica, CA | Educational programming | $400,000 |
| President and Fellows of Harvard College | Boston, MA | Harvard t.h. chan school of public health - food allergy study & research | $350,000 |
| Caf America - Mca Australia Mehretu Exhibition | Alexandria, VA | General support | $264,000 |
| West Maui Improvement Foundation | Lahaina, HI | Olowalu firestation fundraiser | $250,000 |
| The UCLA Foundation | Los Angeles, CA | The rape treatment center - general support | $250,000 |
| Ready to Succeed | Santa Monica, CA | Ready to succeed alumni and early career engagement program | $200,000 |
| Vision to Learn | Los Angeles, CA | General support | $200,000 |
| Silicon Valley Social Venture Fund - Sv2 | Redwood City, CA | General operating | $150,000 |
| Questbridge | Palo Alto, CA | Feasibility study program | $150,000 |
| The Teak Fellowship | New York, NY | Cats and swim programs | $100,000 |
| Downtown Women's Center | Los Angeles, CA | General support | $100,000 |
| Israel Tennis Centers Foundation Inc | New York, NY | General support | $100,000 |
| Loyola Marymount University | Los Angeles, CA | Loyola project for the innocent program | $100,000 |
| Maccabi USA Inc | Philadelphia, PA | Financial aid endowment | $100,000 |
| Storycorps | Brooklyn, NY | General support | $100,000 |
| Ballroom Marfa | Marfa, TX | General support | $100,000 |
| Silicon Valley Social Venture Fund - Sv2 | Redwood City, CA | General operating | $85,000 |
| Al Wooten Jr Youth Center | Los Angeles, CA | General support | $50,000 |
| Association to Benefit Children | New York, NY | General support | $50,000 |
| Boston Children's Hospital | Boston, MA | Research for gut brain interaction | $50,000 |
| Cedars-Sinai Medical Center | Los Angeles, CA | Research in gut microbiome | $50,000 |
| Gigi's Playhouse NYC | New York, NY | General support | $50,000 |
| Harvard-Westlake School | Studio City, CA | Financial aid program | $50,000 |
| Hawai'i Foodbank | Honolulu, HI | Keiki school pantry program | $50,000 |
| Kapi'olani Health Foundation | Honolulu, HI | Abbie vara pediatric services fund | $50,000 |
| Pacific American Foundation | Kailua, HI | Nalu studies program | $50,000 |
| The Peninsula Bridge Program | San Mateo, CA | General support | $50,000 |
| University of Washington Foundation | Seattle, WA | Uw medicine family planning fund | $50,000 |
| Ballroom Marfa | Marfa, TX | General support | $47,000 |
| Ronald Mcdonald House Charities of Hawaii | Honolulu, HI | General support | $35,000 |
| San Francisco General Hospital Foundation | San Francisco, CA | General operating | $25,000 |
| Cerebral Palsy Soccer Inc | Irvington, NY | General support | $25,000 |
| Determined to Succeed | Santa Monica, CA | General support | $25,000 |
| Food Allergy Research & Education | Mclean, VA | Food allergy research | $25,000 |
| The John Thomas Dye School | Los Angeles, CA | Financial assistance program | $25,000 |
| Legal Outreach Inc | Long Island City, NY | General support | $25,000 |
| Brooklyn Debate League | Brooklyn, NY | General support | $20,000 |
| World Connect Inc | New York, NY | General support | $20,000 |
| Achieve Tahoe | Truckee, CA | General support | $15,000 |
| Accessurf Hawaii | Honolulu, HI | General support | $15,000 |
| Hawaii Performing Arts Company | Honolulu, HI | Mvt show sponsorship - parade | $15,000 |
| Kids & Art Foundation | Burlingame, CA | Lpch artist in residence program | $15,000 |
| Christmas Bureau of Palo Alto | Palo Alto, CA | General support | $10,000 |
| A'ali'i Mentoring | Honolulu, HI | General support | $10,000 |
| Education Pioneers Inc | Boston, MA | General support | $10,000 |
| Co-Cathedral of St Theresa Church of the Child Jesus | Honolulu, HI | Parish security fence project | $10,000 |
| UC Santa Barbara Foundation | Santa Barbara, CA | The ted deixler memorial fund | $10,000 |
| Palo Alto Weekly Holiday Fund (Embarcadero Media Foundation) | Palo Alto, CA | General support | $10,000 |
| Caminar | San Mateo, CA | General support | $10,000 |
Grants approved for future payment
| Recipient | Location | Purpose | Amount |
|---|---|---|---|
| Iolani School | Honolulu, HI | Building new student center | $5,000,000 |
Giving by year
| Tax year | Grants paid | Grant lines |
|---|---|---|
| 2024 | $9,451,000 | 54 |
| 2023 | $8,415,503 | 12 |
Sources
- IRS Form 990-PF, tax year 2024, filed Nov 4, 2025 - IRS e-file batch, object ID 202503079349101720
- IRS Tax Exempt Organization Search for EIN 94-2460896
- Profile updated Nov 5, 2026
Facts on this page come from the foundation's own IRS Form 990-PF filings as published by the IRS. Grantvello does not know whether a foundation is accepting proposals right now: a past grant is not an open opportunity. Always confirm current guidelines with the funder before applying.