Open Philanthropy Action Fund
Open Philanthropy Action Fund is a 501(c)(4) civic league and social welfare organization based in Palo Alto, California. The organization was formed in 2016 and received its tax-exempt ruling in August 2018. As a 501(c)(4) entity, donations to the organization are not tax-deductible. The organization operates as a grantmaking and advocacy entity focused on maximizing the impact of philanthropic giving on public policy and social welfare.
Financial Overview
From 2024 IRS Form 990-PF · View filing
Total Assets
$41.2M
+34.1% YoY
Annual Giving
$16.8M
-52.9% YoY
Grant Count
29
-23.7% YoY
Avg Grant Size
$580K
-38.3% YoY
Mission & Focus Areas
The organization's mission is to study and promote more effective giving for public policy, advocacy, and social welfare purposes. The organization seeks to maximize the impact that philanthropic giving can have on public policy and further social welfare. Through research, education, advocacy, and grantmaking, the organization aims to bring about improvement in select public policy areas.
The organization's primary focus areas include:
- Global Health and Wellbeing
- Global Catastrophic Risks
- Criminal justice reform
- Immigration policy
- Community improvement and capacity building
- Alliance and advocacy organizations
The organization prioritizes funding based on importance, neglectedness, and tractability.
Grantmaking
Open Philanthropy Action Fund makes grants to section 501(c)(3) charities, section 501(c)(4) social welfare organizations, and other types of entities for general support or specific projects consistent with the organization's goals.
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Geographic Focus
Where this funder awards grants
The organization's grantmaking focuses primarily on California, New York, and Maryland.
Grant Distribution by State
States
Cities
Financial History
Multi-year comparison from IRS filings
2024 (Most Recent)
- Total Revenue: $83,192,444
- Total Expenses: $58,649,459
- Total Assets: $41,200,342
- Total Liabilities: $33,400,000
- Net Income: $24,542,985
- Net Assets: $7,846,969
- Total Giving: $37,359,496
2023
- Total Revenue: $79,334,487
- Total Expenses: $77,508,932
- Total Assets: $30,728,049
The organization's revenue is primarily derived from contributions, which accounted for $79,303,354 of the 2024 total revenue.
| Metric | 2024 | 2023 | 2022 |
|---|---|---|---|
| Total Assets | $41,200,342 | $30,728,049 | $31,980,708 |
| Revenue | $83,192,444 | $79,334,487 | $50,098,558 |
| Expenses | $58,649,459 | $77,508,932 | $55,283,198 |
| Qualifying Distributions | — | — | — |
| Net Investment Income | $3,889,090 | $1,628,050 | $1,275,914 |
| 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 2024
Grant Size Distribution
143 grants across all recorded years
Giving History
Grant recipients and amounts by year
No grants recorded for .
Leadership & Key People
Leadership team and compensation from IRS filings
Cari Tuna is listed as a principal officer of the organization.
Compensation Overview
From 2024 IRS filing
From 2024 filing
| Name | Title | Hours | Compensation |
|---|---|---|---|
| CARI TUNA | PRESIDENT/DIRECTOR | 2 | — |
| ALEXANDER BERGER | CEO/DIRECTOR | 2 | — |
| DIVESH MAKAN | SECRETARY/DIRECTOR | 0.5 | — |
| DUSTIN MOSKOVITZ | DIRECTOR | 0.5 | — |
| HOLDEN KARNOFSKY | DIRECTOR | 2 | — |
| TOM VAN LOBEN SELS | TREASURER | 0.5 | — |
Contact Information
Address: 314 Lytton Avenue, Palo Alto, CA 94301-1430
Phone: 650-804-7100
Website: openphilanthropy.org
Subject Areas
Focus areas based on grantmaking activity
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Data last updated April 2026. Sourced from IRS Form 990-PF filings. Research dossier generated April 2026.
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