A P Giannini Foundation
A P Giannini Foundation is a nonprofit organization focused on Adults, based in San Rafael, CA. IRS filing data is available from 2020 through 2025. In 2025, it awarded 19 grants totaling $1.2M.
Key facts about A P Giannini Foundation
- EIN
- 94-6089512
- Latest 990 filing
- Form 990-PF, 2025
- Annual giving (2025)
- $1,243,000
- Grants made (2025)
- 19
- Average grant
- $65,421
- Median grant
- $70,000
- Primary geography
- California (100% of itemized 2025 grant dollars)
Data from IRS Form 990-PF, 2025; updated September 2026.
Who A P Giannini Foundation funds
By grant dollars, the top recipient states for A P Giannini Foundation's 19 itemized 2025 grants were California (100%). The most frequent recipient cities were San Francisco, CA (8 grants), Palo Alto, CA (4 grants), Irvine, CA (2 grants) and La Jolla, CA (2 grants). None of its 19 grants with a stated purpose were described as general or operating support.
How A P Giannini Foundation gives
- Giving grew 28% from 2022 to 2025. Method
From the foundation's IRS Form 990-PF filings. Methodology.
Next steps with A P Giannini Foundation
- How to evaluate A P Giannini Foundation as a funder
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Financial Overview
From 2025 IRS Form 990-PF · View filing
Total Assets
—
Annual Giving
$1.2M
+11.9% YoY
Grant Count
19
+5.6% YoY
Avg Grant Size
$65K
+6.0% YoY
About A P Giannini Foundation
Based on IRS filings
A P Giannini Foundation is a nonprofit organization focused on Adults, based in San Rafael, CA. IRS filing data is available from 2020 through 2025. In 2025, it awarded 19 grants totaling $1.2M.
Focus Areas
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Geographic Focus
Where this funder awards grants
Grant Distribution by State
Share of all 19 itemized 2025 grant dollars.
States
Cities
Financial History
Multi-year comparison from IRS filings
| Metric | 2025 | 2024 | 2023 |
|---|---|---|---|
| Total Assets | — | — | — |
| Revenue | — | — | — |
| Expenses | — | — | — |
| Qualifying Distributions | — | — | — |
| Net Investment Income | — | — | — |
| Distributable Amount | — | — | — |
Data update history
When this profile's IRS filing data changed on Grantable
- IRS filings on file for fiscal years 2020–2025
Giving Over Time
Total grant dollars and number of grants per year
Grant Insights
How this funder distributes its grants
Top Recipients
Top 7 recipients in 2025
Grant Size Distribution
91 grants across all recorded years
Open Grants
1 open opportunity from A P Giannini Foundation
Giving History
Grant recipients and amounts by year
Among its reported 2025 grants, the largest recipients include Uc San Francisco School of Medicine ($484,000 across 7 grants), Stanford University School of Medicine ($280,000 across 4 grants), Uc Irvine School of Medicine ($140,000 across 2 grants).
| Recipient | Purpose | Amount |
|---|---|---|
| STANFORD UNIVERSITY SCHOOL OF MEDICINE Palo Alto, CA | FOR MEDICAL RESEARCH FELLOWSHIP-BASTO | $70,000 |
| STANFORD UNIVERSITY SCHOOL OF MEDICINE Palo Alto, CA | FOR MEDICAL RESEARCH FELLOWSHIP-CHANIN | $70,000 |
| STANFORD UNIVERSITY SCHOOL OF MEDICINE Palo Alto, CA | FOR MEDICAL RESEARCH FELLOWSHIP-VAN EGEREN | $70,000 |
| STANFORD UNIVERSITY SCHOOL OF MEDICINE Palo Alto, CA | FOR MEDICAL RESEARCH FELLOWSHIP-LI | $70,000 |
| UC IRVINE SCHOOL OF MEDICINE Irvine, CA | FOR MEDICAL RESEARCH FELLOWSHIP-YONAN | $70,000 |
| UC IRVINE SCHOOL OF MEDICINE Irvine, CA | FOR MEDICAL RESEARCH FELLOWSHIP-PENDLEBURY | $70,000 |
| UC SAN DIEGO SCHOOL OF MEDICINE La Jolla, CA | FOR MEDICAL RESEARCH FELLOWSHIP-NGO | $70,000 |
| UC SAN DIEGO SCHOOL OF MEDICINE La Jolla, CA | FOR MEDICAL RESEARCH FELLOWSHIP-DOUD | $70,000 |
| UC SAN FRANCISCO SCHOOL OF MEDICINE San Francisco, CA | FOR MEDICAL RESEARCH FELLOWSHIP-JIN | $70,000 |
| UC SAN FRANCISCO SCHOOL OF MEDICINE San Francisco, CA | FOR MEDICAL RESEARCH FELLOWSHIP-KONJIKUSIC | $70,000 |
Leadership & Key People
Officers and directors from IRS filings
Compensation Overview
No officer or director reported compensation in the available filings.
From 2025 IRS filing
| Name | Title | Hours | Compensation |
|---|---|---|---|
| Mike Mantle | Treasurer | — | — |
| Virginia Hammerness | Director - (Dec'd 05/31/25) | — | — |
| Mark C Perry | Chairman | — | — |
| Bruce U Wintroub MD | Director | — | — |
| Keith Grossman | Director | — | — |
| Jack L Meyers | Vice-Chairman | — | — |
| Anne McWilliams | Emeritus Trustee | — | — |
| Keith McWilliams | Secretary | — | — |
| Mark Chaomdphd | Director | — | — |
Subject Areas
Focus areas based on grantmaking activity
Frequently Asked Questions
What is A P Giannini Foundation?
A P Giannini Foundation is a nonprofit organization focused on Adults, based in San Rafael, CA. It holds — in total assets as of 2025.
Where does A P Giannini Foundation operate?
A P Giannini Foundation has awarded grants in California.
What size grants does A P Giannini Foundation award?
In 2025, A P Giannini Foundation awarded 19 grants totaling $1.2M — an average of about $65K per grant, based on its IRS Form 990 filings.
What is A P Giannini Foundation's EIN?
A P Giannini Foundation's EIN (Employer Identification Number) is 94-6089512. IRS Form 990 filing data is available on this page for 2020–2025.
Explore Open Grants
Browse active grant opportunities in A P Giannini Foundation's focus areas in our free grants database
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Data last updated September 2026. Sourced from IRS Form 990-PF filings.