Private Foundation

ARRILLAGA FOUNDATION

ARRILLAGA FOUNDATION is a private foundation categorized as Private Foundation based in PALO ALTO, CA. Its most recent IRS filing (2024) reports revenue of $28.7M, expenses of $9.8M, total assets of $50.9M. Imperigo tracks 100 reported grants from this foundation totaling approximately $35.6M.

EIN: 942460896 PALO ALTO, CA Latest filing: 2024

Total Revenue$28.7M

Total Expenses$9.8M

Total Assets$50.9M

Grants Given100

Grant Total$35.6M

Filing Years2019–2024

Before you apply to Arrillaga Foundation

Preselected only Doesn't accept unsolicited requests for funds, per its 2024 Form 990-PF.

Often funds new orgs 81% of recent recipients were first-time grantees (2022–2024).

Who to contact, what to include, deadlines, typical grant size and geographic focus are available with membership.

Sample Grants Given

SAN MATEO COUNTY SHERIFF'S OFFICE FOUNDATION

REDWOOD CITY, CA · 2024

CONSTRUCTION OF THE NEW SAN MATEO COUNTY SHERIFF'S OFFICE

$3,500,000

THE TEAK FELLOWSHIP

NEW YORK, NY · 2024

THE MARC E. BECKER ENDOWMENT FOR LEADERSHIP AND PROFESSIONAL DEVELOPMENT

$1,000,000

LUCILE PACKARD FOUNDATION FOR CHILDREN'S HEALTH

PALO ALTO, CA · 2024

DR. JENNY FRANKOVICH'S PANS INFECTION RESEARCH

$500,000

BROWN UNIVERSITY

PROVIDENCE, RI · 2024

PAID STUDENT LEARNING OPPORTUNITIES

$500,000

CAMBODIAN CHILDREN'S FUND

SANTA MONICA, CA · 2024

EDUCATIONAL PROGRAMMING

$400,000

Showing up to 5 of 100 total records — full history available with membership.

Officers & Directors

CO-PRESIDENT John Arrillaga Jr

SECRETARY Justine Stamen Arrillaga

CO-PRESIDENT Laura Arrillaga-Andreessen

TREASURER Marc Andreessen

Officer compensation and complete director data available with membership.

Top Grant Purposes

General Support

$20,183,271 73 grants

Education

$5,970,503 5 grants

Research & Policy

$1,800,000 6 grants

Training & Professional Development

$1,000,000 1 grant

Health & Medicine

$525,000 3 grants

Financial Trends

Year	Revenue	Expenses	Assets
2024	$28.7M	$9.8M	$50.9M
2023	$2.3M	$3.5M	$31.8M
2022	$30.4M	$25.7M	$38.0M
2020	$1.1M	$1.7M	$26.5M
2019	$1.5M	$949K	$27.0M

Between 2019 and 2024, reported annual revenue grew from $1.5M to $28.7M (+1786%), with total assets most recently reported at $50.9M.

Interactive year-over-year charts and full filing details available with membership.

Grant Geography

Grants from this foundation were reported to recipients in CA, HI, MA, NY, PA, RI, and 3 other states.

CAHIMANYPARITXVAWA

Full geographic grant map with state-by-state breakdown available with membership.

See the full picture for ARRILLAGA FOUNDATION

Complete financials, all 100 grant records, officer compensation, year-over-year trend charts, a geographic grant map, and data exports — across 880,000+ organizations.

Full Financial History Complete Grant Activity Officer Compensation Year-over-Year Charts Geographic Grant Map Data Exports