Costolo Family Foundation is a private foundation focused on Philanthropy, Voluntarism & Grantmaking, based in WILMINGTON, DE. IRS filing data is available from 2020 through 2024. As of 2024, the organization holds $10.3M in total assets. In 2024, it awarded 7 grants totaling $420K. Net investment income was $356K.
Financial Overview
From 2024 IRS Form 990-PF · View filing
Total Assets
$10.3M
+2.8% YoY
Annual Giving
$420K
+55.6% YoY
Grant Count
7
+40.0% YoY
Avg Grant Size
$60K
+11.1% YoY
Under IRS private-foundation payout rules, Costolo Family Foundation reported a distributable amount of $559K for 2024 — the minimum it must pay out in qualifying distributions.
About Costolo Family Foundation
Based on IRS filings
Costolo Family Foundation is a private foundation focused on Philanthropy, Voluntarism & Grantmaking, based in WILMINGTON, DE. IRS filing data is available from 2020 through 2024. As of 2024, the organization holds $10.3M in total assets. In 2024, it awarded 7 grants totaling $420K. Net investment income was $356K.
Focus Areas
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Geographic Focus
Where this funder awards grants
Grant Distribution by State
Cities
Financial History
Multi-year comparison from IRS filings
| Metric | 2024 | 2023 | 2022 |
|---|---|---|---|
| Total Assets | $10,279,137 | $9,996,421 | $8,739,950 |
| Revenue | $778,127 | $1,614,343 | $-2,727 |
| Expenses | $505,411 | $357,872 | $329,177 |
| Qualifying Distributions | $454,026 | $299,832 | $279,624 |
| Net Investment Income | $356,440 | $226,988 | $156,444 |
| Distributable Amount | $558,896 | $447,761 | $404,806 |
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 2024
Grant Size Distribution
15 grants across all recorded years
Giving History
Grant recipients and amounts by year
Among its reported 2024 grants, the largest include Conservation International Foundation ($100,000), Grand Teton National Park Foundation ($100,000), The Nature Conservancy ($100,000).
| Recipient | Purpose | Amount |
|---|---|---|
| CONSERVATION INTERNATIONAL FOUNDATION ARLINGTON, VA | General & Unrestricted | $100,000 |
| GRAND TETON NATIONAL PARK FOUNDATION MOOSE, WY | General & Unrestricted | $100,000 |
| PACIFIC WILD ALLIANCE ISSAQUAH, WA | General & Unrestricted | $50,000 |
| SARARA INSTITUTE DENVER, CO | General & Unrestricted | $50,000 |
| SARARA INSTITUTE DENVER, CO | To support the Reteti Elephant Sanctuary | $10,000 |
| THE NATURE CONSERVANCY COLD SPRING HARBOR, NY | General & Unrestricted | $100,000 |
| WYOMING WETLANDS SOCIETY JACKSON, WY | General & Unrestricted | $10,000 |
Leadership & Key People
Officers and directors from IRS filings
Compensation Overview
From 2024 IRS filing
From 2024 filing
| Name | Title | Hours | Compensation |
|---|---|---|---|
| Lorin Costolo | Dir, Pres | 1 | — |
| Richard Costolo | Dir, Sec, Treas | 1 | — |
| Rose Costolo | Dir | 1 | — |
Subject Areas
Focus areas based on grantmaking activity
Frequently Asked Questions
What is Costolo Family Foundation?
Costolo Family Foundation is a private foundation focused on Philanthropy, Voluntarism & Grantmaking, based in WILMINGTON, DE. It holds $10.3M in total assets as of 2024.
How large is Costolo Family Foundation?
As of 2024, Costolo Family Foundation holds $10.3M in total assets with $778K in annual revenue. It awarded 7 grants totaling $420K in 2024.
Where does Costolo Family Foundation operate?
Costolo Family Foundation has awarded grants in Colorado, New York, Virginia, Washington, Wyoming.
What size grants does Costolo Family Foundation award?
In 2024, Costolo Family Foundation awarded 7 grants totaling $420K — an average of about $60K per grant, based on its IRS Form 990 filings.
How much is Costolo Family Foundation required to give away each year?
Private foundations must generally distribute about 5% of their assets annually. For 2024, Costolo Family Foundation reported a distributable amount of $559K on its IRS Form 990-PF — the minimum it must pay out in qualifying distributions.
What is Costolo Family Foundation's EIN?
Costolo Family Foundation's EIN (Employer Identification Number) is 86-1199543. IRS Form 990 filing data is available on this page for 2020–2024.
Explore Open Grants
Browse active grant opportunities in Costolo Family Foundation's focus areas in our free grants database
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Data last updated April 2026. Sourced from IRS Form 990-PF filings.
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