William and Inez Mabie Family Foundation
William and Inez Mabie Family Foundation is a private foundation, based in NAPA, CA. IRS filing data is available from 2020 through 2021. As of 2021, the organization holds $3.1M in total assets. In 2021, it awarded 16 grants totaling $1.6M. Net investment income was $733K.
Financial Overview
From 2021 IRS Form 990-PF · View filing
Total Assets
$3.1M
-23.0% YoY
Annual Giving
$1.6M
+113.4% YoY
Grant Count
16
+220.0% YoY
Avg Grant Size
$103K
-33.3% YoY
About William and Inez Mabie Family Foundation
Based on IRS filings
William and Inez Mabie Family Foundation is a private foundation, based in NAPA, CA. IRS filing data is available from 2020 through 2021. As of 2021, the organization holds $3.1M in total assets. In 2021, it awarded 16 grants totaling $1.6M. Net investment income was $733K.
Ready to take the next step with William and Inez Mabie Family Foundation?
Geographic Focus
Where this funder awards grants
Grant Distribution by State
States
Cities
Financial History
Multi-year comparison from IRS filings
| Metric | 2021 | 2020 |
|---|---|---|
| Total Assets | $3,090,254 | $4,013,142 |
| Revenue | $791,197 | $389,091 |
| Expenses | $1,714,085 | $836,929 |
| Qualifying Distributions | $1,645,500 | — |
| Net Investment Income | $733,046 | $323,202 |
| Distributable Amount | — | — |
Giving Over Time
Total grant dollars and number of grants per year
Grant Insights
How this funder distributes its grants
Top Recipients
Top 10 recipients in 2021
Grant Size Distribution
21 grants across all recorded years
Giving History
Grant recipients and amounts by year
Among its reported 2021 grants, the largest include Santa Clara Law School ($750,000), UC Davis Foundation ($500,000), ALS Gold West Chapter ($200,000).
| Recipient | Purpose | Amount |
|---|---|---|
| Save Napa Valley Foundation Angwin, CA | Education | $10,000 |
| ALS Gold West Chapter Woodland Hills, CA | Services and research for ALS | $200,000 |
| Community Food Bank of San Benito C Hollister, CA | Feed needy | $15,000 |
| Equal Justice America Midothian, VA | Legal assistance to the poor | $16,000 |
| Immigration Institute of the Bay Ar Napa, CA | Legal assistance for immigrants | $50,000 |
| Connolly Ranch Education Center Napa, CA | Education | $10,000 |
| Cub Scout Pack 7196 Napa, CA | Youth program | $1,000 |
| Santa Clara Law School Santa Clara, CA | Promote legal education | $750,000 |
| Boy Scouts of America Napa, CA | Youth program | $500 |
| Napa Climate Now350 Bay Area Oakland, CA | Advocacy and education for climate change | $8,000 |
Leadership & Key People
Officers and directors from IRS filings
Compensation Overview
From 2021 IRS filing
From 2021 filing
| Name | Title | Hours | Compensation |
|---|---|---|---|
| Sara B Malone | Vice President | 0.5 | — |
| Yeoryios C Apallas | Trustee | 2 | $25,000 |
Frequently Asked Questions
How large is William and Inez Mabie Family Foundation?
As of 2021, William and Inez Mabie Family Foundation holds $3.1M in total assets with $791K in annual revenue. It awarded 16 grants totaling $1.6M in 2021.
Where does William and Inez Mabie Family Foundation operate?
William and Inez Mabie Family Foundation has awarded grants in Arizona, California, Virginia.
What size grants does William and Inez Mabie Family Foundation award?
In 2021, William and Inez Mabie Family Foundation awarded 16 grants totaling $1.6M — an average of about $103K per grant, based on its IRS Form 990 filings.
What is William and Inez Mabie Family Foundation's EIN?
William and Inez Mabie Family Foundation's EIN (Employer Identification Number) is 94-3054756. IRS Form 990 filing data is available on this page for 2020–2021.
Explore Open Grants
Browse active grant opportunities in William and Inez Mabie Family Foundation's focus areas in our free grants database
Similar Funders
Funders that support many of the same organizations
National Philanthropic Trust
JENKINTOWN, PA
Assets
$42.2B
Grants
18,583
Total Given
$5.1B
Morgan Stanley Global Impact Funding Trust Inc
INDIANAPOLIS, IN
Assets
$9.1B
Grants
19,253
Total Given
$1.2B
Vanguard Charitable Endowment Program
SOUTHEASTERN, PA
Assets
$22.2B
Grants
24,269
Total Given
$3.0B
Verizon Foundation
BASKING RIDGE, NJ
Assets
$23.8M
Grants
5,464
Total Given
$7.0M
McNabb Foundation
WILMINGTON, DE
Assets
$4.8M
Grants
328
Total Given
$358K
Gs Donor Advised Philanthropy Fund
NEW YORK, NY
Assets
$12.7B
Grants
7,424
Total Given
$3.0B
The Blackbaud Giving Fund
CHARLESTON SC, SC
Assets
$52.7M
Grants
1,860
Total Given
$41.4M
Shell Usa Company Foundation
HOUSTON, TX
Assets
$52.3M
Grants
4,650
Total Given
$16.0M
The Pfizer Foundation Inc
NEW YORK, NY
Assets
$255.3M
Grants
9,306
Total Given
$23.2M
American Express Foundation
NEW YORK, NY
Assets
$48.9M
Grants
1,495
Total Given
$23.2M
Ge Aerospace Foundation
NORWALK, CT
Assets
$22.5M
Grants
2,467
Total Given
$15.3M
Saint Paul & Minnesota Foundation
ST PAUL, MN
Assets
$1.6B
Grants
1,445
Total Given
$192.6M
Data last updated April 2026. Sourced from IRS Form 990-PF filings.
What could you do with William and Inez Mabie Family Foundation on Grantable?
- Assess strategic fit with your organization
- Draft a tailored letter of inquiry
- Find open RFPs from this funder
- Monitor for new funding opportunities