Arrillaga Foundation | Foundation Profile

GrantBay analyzes IRS Form 990-PF data to help grant seekers find fit funders like Arrillaga Foundation. Data shown is extracted from Form 990-PF filings.

EIN: 94-2460896

Foundation Overview

Based in Palo Alto, CA, Arrillaga Foundation has awarded 138 grants totaling $86,247,719 to organizations in California, Hawaii and 7 other states across the US. Individual grants range from $1,000 to $10,000,000, with a median award of $25,000.

Latest Tax Year
2024
Total Giving (all years)
$86,247,719
Total Assets
$50,859,228
Median Grant (all grants)
$25,000

Latest Form 990-PF Snapshot

Total Grants
53
Median Grant
$50,000
% Median Grant Decline
-73% (vs previous year)
Data extracted from IRS Form 990-PF filings. Last filing year: February 2026

Foundation Intelligence

Advanced analytics and strategic insights to help nonprofit organizations assess grant opportunities and optimize their application strategies

New Applicant Friendliness
Highly Accessible: 91%

48 of 53 recipients (91%) were new grantees. Foundation prioritizes discovering new partners. Most funding supports first-time applicants with compelling missions.

Geographic Focus
California

72% of all grants are concentrated in California, demonstrating highly focused geographic giving. This foundation prioritizes deep community impact in its primary service area. Within California, funding concentrates in Palo Alto (25%), Mountain View (8%), Atherton (8%).

Funding Trajectory
+441%

Strong 441% growth in annual giving over 8 years indicates expanding philanthropic capacity and increasing opportunities for grant seekers. This upward trajectory suggests growing foundation resources and commitment.

Program Areas
General Purposes + 4 others

Diversified giving across multiple program areas with primary emphasis on general purposes (53%). This broad approach suggests openness to various causes and innovative cross-sector solutions.

Where is The Money Going?

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Grants & Funding

Analyzing past grantees provides valuable insights into Arrillaga Foundation's funding preferences, organizational priorities, and grant making patterns. This historical data helps potential applicants understand the foundation's strategic focus and identify successful funding approaches.

Name Amount Location Purpose Year
San Francisco General Hospital Foundation $25,000 San Francisco, CA, US General Operating 2024
Silicon Valley Social Venture Fund - Sv2 $150,000 Redwood City, CA, US General Operating 2024
San Mateo County Sheriff's Office Foundation $3,500,000 Redwood City, CA, US Construction Of The New San Mateo County Sheriff's Office 2024
West Maui Improvement Foundation $250,000 Lahaina, HI, US Olowalu Firestation Fundraiser 2024
Silicon Valley Social Venture Fund - Sv2 $85,000 Redwood City, CA, US General Operating 2024
Caf America - Mca Australia Mehretu Exhibition $264,000 Alexandria, VA, US General Support 2024
Ballroom Marfa $47,000 Marfa, TX, US General Support 2024
The Teak Fellowship $100,000 New York, NY, US Cats And Swim Programs 2024
The Teak Fellowship $1,000,000 New York, NY, US The Marc E. Becker Endowment For Leadership And Professional Development 2024
Christmas Bureau Of Palo Alto $10,000 Palo Alto, CA, US General Support 2024
A'ali'i Mentoring $10,000 Honolulu, HI, US General Support 2024
Achieve Tahoe $15,000 Truckee, CA, US General Support 2024
Accessurf Hawaii $15,000 Honolulu, HI, US General Support 2024
Al Wooten Jr Youth Center $50,000 Los Angeles, CA, US General Support 2024
Association To Benefit Children $50,000 New York, NY, US General Support 2024
Boston Children's Hospital $50,000 Boston, MA, US Research For Gut Brain Interaction 2024
Brooklyn Debate League $20,000 Brooklyn, NY, US General Support 2024
Brown University $500,000 Providence, RI, US Paid Student Learning Opportunities 2024
Cambodian Children's Fund $400,000 Santa Monica, CA, US Educational Programming 2024
Cedars-sinai Medical Center $50,000 Los Angeles, CA, US Research In Gut Microbiome 2024
Cerebral Palsy Soccer Inc $25,000 Irvington, NY, US General Support 2024
Determined To Succeed $25,000 Santa Monica, CA, US General Support 2024
Downtown Women's Center $100,000 Los Angeles, CA, US General Support 2024
Education Pioneers Inc $10,000 Boston, MA, US General Support 2024
Food Allergy Research & Education $25,000 Mclean, VA, US Food Allergy Research 2024
Gigi's Playhouse Nyc $50,000 New York, NY, US General Support 2024
President And Fellows Of Harvard College $350,000 Boston, MA, US Harvard T.h. Chan School Of Public Health - Food Allergy Study & Research 2024
Harvard-westlake School $50,000 Studio City, CA, US Financial Aid Program 2024
Hawai'i Foodbank $50,000 Honolulu, HI, US Keiki School Pantry Program 2024
Hawaii Performing Arts Company $15,000 Honolulu, HI, US Mvt Show Sponsorship - Parade 2024
Israel Tennis Centers Foundation Inc $100,000 New York, NY, US General Support 2024
The John Thomas Dye School $25,000 Los Angeles, CA, US Financial Assistance Program 2024
Kapi'olani Health Foundation $50,000 Honolulu, HI, US Abbie Vara Pediatric Services Fund 2024
Kids & Art Foundation $15,000 Burlingame, CA, US Lpch Artist In Residence Program 2024
Legal Outreach Inc $25,000 Long Island City, NY, US General Support 2024
Loyola Marymount University $100,000 Los Angeles, CA, US Loyola Project For The Innocent Program 2024
Lucile Packard Foundation For Children's Health $500,000 Palo Alto, CA, US Dr. Jenny Frankovich's Pans Infection Research 2024
Maccabi Usa Inc $100,000 Philadelphia, PA, US Financial Aid Endowment 2024
Pacific American Foundation $50,000 Kailua, HI, US Nalu Studies Program 2024
The Peninsula Bridge Program $50,000 San Mateo, CA, US General Support 2024
Questbridge $150,000 Palo Alto, CA, US Feasibility Study Program 2024
The Ucla Foundation $250,000 Los Angeles, CA, US The Rape Treatment Center - General Support 2024
Ready To Succeed $200,000 Santa Monica, CA, US Ready To Succeed Alumni And Early Career Engagement Program 2024
Ronald Mcdonald House Charities Of Hawaii $35,000 Honolulu, HI, US General Support 2024
Co-cathedral Of St Theresa Church Of The Child Jesus $10,000 Honolulu, HI, US Parish Security Fence Project 2024
Storycorps $100,000 Brooklyn, NY, US General Support 2024
Uc Santa Barbara Foundation $10,000 Santa Barbara, CA, US The Ted Deixler Memorial Fund 2024
University Of Washington Foundation $50,000 Seattle, WA, US Uw Medicine Family Planning Fund 2024
Vision To Learn $200,000 Los Angeles, CA, US General Support 2024
World Connect Inc $20,000 New York, NY, US General Support 2024
Palo Alto Weekly Holiday Fund (Embarcadero Media Foundation) $10,000 Palo Alto, CA, US General Support 2024
Ballroom Marfa $100,000 Marfa, TX, US General Support 2024
Caminar $10,000 San Mateo, CA, US General Support 2024
Menlo College $20,503 Atherton, CA, US Menlo College Dormitory Modifications 2023
Iolani School $5,000,000 Honolulu, HI, US Building New Student Center 2023
Stanford University $350,000 Stanford, CA, US The Stanford Center On Philanthropy And Civil Society 2023
Our Brother's Home $10,000 Mountain View, CA, US General Support 2023
Stanford University $500,000 Stanford, CA, US The Stanford Center On Philanthropy And Civil Society 2023
Jasper Ridge Farm $10,000 Woodside, CA, US General Support 2023
Lucile Packard Foundation For Children's Health $1,000,000 Palo Alto, CA, US Pans Epidemiological Research Fund 2023
Embarcadero Media Foundation $10,000 Palo Alto, CA, US Holiday Fund 2023
Pacific Legal Foundation $5,000 Sacramento, CA, US General Support 2023
The Daniel R Sayre Memorial Foundation $1,000,000 Kailuakona, HI, US Airbus H-145 Aeromedical Helicopter 2023
Operation Freedom Paws $10,000 Gilroy, CA, US General Support 2023
Stanford University $500,000 Stanford, CA, US The Marc And Laura Andreessen Faculty Directorship Fund For Stanford Pacs 2023
Menlo College $20,503 Atherton, CA, US Menlo College Dormitory Modifications 2023
Iolani School $5,000,000 Honolulu, HI, US Building New Student Center 2023
Stanford University $350,000 Stanford, CA, US The Stanford Center On Philanthropy And Civil Society 2023
Our Brother's Home $10,000 Mountain View, CA, US General Support 2023
Stanford University $500,000 Stanford, CA, US The Stanford Center On Philanthropy And Civil Society 2023
Jasper Ridge Farm $10,000 Woodside, CA, US General Support 2023
Lucile Packard Foundation For Children's Health $1,000,000 Palo Alto, CA, US Pans Epidemiological Research Fund 2023
Embarcadero Media Foundation $10,000 Palo Alto, CA, US Holiday Fund 2023
Pacific Legal Foundation $5,000 Sacramento, CA, US General Support 2023
The Daniel R Sayre Memorial Foundation $1,000,000 Kailuakona, HI, US Airbus H-145 Aeromedical Helicopter 2023
Operation Freedom Paws $10,000 Gilroy, CA, US General Support 2023
Stanford University $500,000 Stanford, CA, US The Marc And Laura Andreessen Faculty Directorship Fund For Stanford Pacs 2023
Christmas Bureau Of Palo Alto $10,000 Palo Alto, CA, US General Support 2022
Menlo College $3,478,071 Atherton, CA, US Dormitory Construction Project 2022
Our Brother's Home $10,000 Mountain View, CA, US General Support 2022
The Britton Fund Inc $10,000 Porterville, CA, US General Support 2022
Woodside Fire Foundation $10,000,000 Woodside, CA, US Fighting Chance Capital Campaign 2022
Brown University $2,000,000 Providence, RI, US Stamen Arrillaga Associate Deanship For Financial Advising 2022
Embarcadero Media Foundation $10,000 Palo Alto, CA, US Holiday Fund 2022
Jasper Ridge Farm $10,000 Portola Valley, CA, US General Support 2022
Christmas Bureau Of Palo Alto $10,000 Palo Alto, CA, US General Support 2022
Menlo College $3,478,071 Atherton, CA, US Dormitory Construction Project 2022
Our Brother's Home $10,000 Mountain View, CA, US General Support 2022
The Britton Fund Inc $10,000 Porterville, CA, US General Support 2022
Woodside Fire Foundation $10,000,000 Woodside, CA, US Fighting Chance Capital Campaign 2022
Brown University $2,000,000 Providence, RI, US Stamen Arrillaga Associate Deanship For Financial Advising 2022
Embarcadero Media Foundation $10,000 Palo Alto, CA, US Holiday Fund 2022
Jasper Ridge Farm $10,000 Portola Valley, CA, US General Support 2022
Christmas Bureau Of Palo Alto $10,000 Palo Alto, CA, US General Support 2022
Menlo College $3,478,071 Atherton, CA, US Dormitory Construction Project 2022
Our Brother's Home $10,000 Mountain View, CA, US General Support 2022
The Britton Fund Inc $10,000 Porterville, CA, US General Support 2022
Woodside Fire Foundation $10,000,000 Woodside, CA, US Fighting Chance Capital Campaign 2022
Brown University $2,000,000 Providence, RI, US Stamen Arrillaga Associate Deanship For Financial Advising 2022
Embarcadero Media Foundation $10,000 Palo Alto, CA, US Holiday Fund 2022
Jasper Ridge Farm $10,000 Portola Valley, CA, US General Support 2022
San Francisco Ballet $25,000 San Francisco, CA, US General Support 2021
Punahou School $30,000 Honolulu, HI, US Class Of 1981 Endowed Scholarship Fund 2021
Carpinteria Education Foundation Inc $1,000 Carpinteria, CA, US General Support 2021
Chabad Of Greater South Bay $1,000,000 Palo Alto, CA, US General Support 2021
Our Brother's Home $10,000 Mountain View, CA, US General Support 2021
Silicon Valley Community Foundation $10,000 Mountain View, CA, US Palo Alto Weekly Holiday Fund 2021
Christmas Bureau Of Palo Alto $10,000 Palo Alto, CA, US General Support 2021
Chp 11-99 Foundation $25,000 Costa Mesa, CA, US General Support 2021
Menlo College $9,000,000 Atherton, CA, US Dormitory Construction Project 2021
Lifemoves $5,000 Menlo Park, CA, US General Support 2021
Vista Center For The Blind And Visually Impaired $5,000 Palo Alto, CA, US General Support 2021
Rich May Foundation $5,000 Atherton, CA, US General Support 2021
Morningside High Monarchs Alumni Association $100,000 Torrance, CA, US General Support 2020
Valley Medical Center $125,000 San Jose, CA, US Covid-19 Mitigation 2020
Silicon Valley Creates $25,000 San Jose, CA, US Ship Kits Inc 2020
A Tavola Together Foundation $25,000 Stockton, CA, US General Support 2020
San Francisco Ballet $25,000 San Francisco, CA, US General Support 2020
Palo Alto Medical Foundation $1,000 Palo Alto, CA, US General Support 2020
Palo Alto Community Child Care $10,000 Palo Alto, CA, US General Support 2020
Christmas Bureau Of Palo Alto $10,000 Palo Alto, CA, US General Support 2020
Canine Companions For Independence $10,000 Santa Rosa, CA, US Canine Early Development Center 2020
Sunnyvale Community Services $100,000 Sunnyvale, CA, US Capital Campaign 2020
Chp 11-99 Foundation $10,000 Costa Mesa, CA, US General Support 2020
Jasper Ridge Farm $10,000 Woodside, CA, US General Support 2020
Menlo College $1,000,000 Atherton, CA, US Residence Hall Construction 2020
Vista Center For The Blind And Visually Impaired $10,000 Palo Alto, CA, US General Support 2020
Silicon Valley Community Foundation $10,000 Mountain View, CA, US Palo Alto Weekly Holiday Fund 2020
The Teak Fellowship $25,000 New York, NY, US General Support 2018
Palo Alto Weekly Holiday Fund $10,000 Palo Alto, CA, US General Support 2018
Westside Food Bank $1,000 Santa Monica, CA, US General Support 2017
Palo Alto Weekly Holiday Fund $10,000 Palo Alto, CA, US General Support 2016
Carpinteria Education Foundation $1,000 Carpenteria, CA, US For Orchard To Ocean 5k 2016
Ronald Mcdonald House At Stanford $1,700,000 Palo Alto, CA, US For Building Campaign 2016
Punahou School $10,000 Honolulu, HI, US For 35th Reunion 2016
San Francisco Ballet $25,000 San Francisco, CA, US General Support 2016
Canary Foundation $1,000 Redwood City, CA, US For Canary Challenge 2016
Pacific Art League $1,500 Palo Alto, CA, US General Support 2016

Foundations Similar to Arrillaga Foundation

Discover 5 foundations with comparable assets ($50,654,274-$51,126,767), similar grant patterns, and geographic focus in CA that may also align with your organization's funding needs and grant seeking strategy.

Foundation Name Total Assets Typical Grant Size Service Area Similarity Match

EIN: 45-4295747 | 11 grants awarded
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$25,000
median grant
Beverly Hills, CA
Same state
102%
Excellent match

EIN: 95-6027266 | 1162 grants awarded
$50,712,388
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$15,000
median grant
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Same state
102%
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EIN: 26-0821014 | 210 grants awarded
$50,676,941
(≈ Similar)
$30,000
median grant
Los Angeles, CA
Same state
102%
Excellent match

EIN: 88-1274874 | 158 grants awarded
$50,654,274
(≈ Similar)
$25,000
median grant
Manhattan Beach, CA
Same state
102%
Excellent match

EIN: 68-0049658 | 524 grants awarded
$51,126,767
(≈ Similar)
$30,600
median grant
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Same state
102%
Excellent match

Contact Information

Official contact details for Arrillaga Foundation as registered with the IRS. These details are essential for grant applications, correspondence, and due diligence processes.

EIN 94-2460896
Website N/A
Address 2450 WATSON CT Palo Alto, CA 94303-3216

Key People (4)

Board members, trustees, and key staff who oversee Arrillaga Foundation's grant making decisions and strategic direction. Understanding leadership composition can provide insights into foundation priorities and potential networking opportunities.

Co-president Laura Arrillaga-andreessen
Co-president John Arrillaga Jr
Treasurer Marc Andreessen
Secretary Justine Stamen Arrillaga

Forms 990-PF

IRS Form 990-PF filings provide comprehensive financial information, grant details, and operational data. These documents are essential resources for understanding foundation capacity, giving patterns, and strategic priorities.

Form 990-PF Research Tips
  • Review Part XV for detailed grant recipient information and funding purposes
  • Check Part I for total assets, annual giving amounts, and payout requirements
  • Examine Part VIII for key personnel compensation and board structure
  • Look for trends across multiple years to understand giving patterns

About This Foundation Profile

This comprehensive foundation profile for Arrillaga Foundation is powered by Grant Bay's advanced foundation research platform. Our system analyzes IRS Form 990-PF filings, grant histories, and philanthropic patterns to provide nonprofit organizations with actionable intelligence for grant seeking success.

Data Sources & Accuracy

All information is derived from official IRS filings and public records. Grant Bay processes thousands of Form 990-PF documents to extract grant details, financial data, and organizational information. Data accuracy depends on foundation reporting quality and IRS filing completeness.

Research Applications

Use this profile for prospect research, grant strategy development, application preparation, and relationship building. Combine this data with additional research on foundation priorities, application processes, and board member backgrounds for comprehensive grant seeking strategies.

Data Currency: Last updated February 2026 based on IRS Form 990-PF filings. Foundation information reflects most recent available tax year data.