Private foundation · EIN 86-1199543
Costolo Family Foundation
Wilmington, DE
Costolo Family Foundation is a private foundation based in Wilmington, DE. On its Form 990-PF for tax year 2025, it reported $625K in grants and contributions paid across 7 grants, with $12.4M in assets (fair market value). It reports that it gives only to preselected charitable organizations and does not accept unsolicited requests for funds. Its largest grants went to Grand Teton National Park Foundation, Conservation International Foundation and Elephant Havens Wildlife Foundation Inc.
How to request funding
Gives only to preselected organizations. On its Form 990-PF, this foundation checked the box saying it makes contributions only to preselected charitable organizations and does not accept unsolicited requests for funds. Relationships and invitations usually come first.
As reported on the foundation's Form 990-PF for tax year 2025. Requirements change; confirm with the foundation before applying.
Largest grants, tax year 2025
Historical data · not a prediction| Recipient | Location | Purpose | Amount |
|---|---|---|---|
| Grand Teton National Park Foundation | Moose, WY | General & Unrestricted | $150,000 |
| Conservation International Foundation | Boston, MA | General & Unrestricted | $100,000 |
| Elephant Havens Wildlife Foundation Inc | Dallas, TX | General & Unrestricted | $100,000 |
| Pacific Wild Alliance | Issaquah, WA | General & Unrestricted | $100,000 |
| The Nature Conservancy | Cold Spring Harbor, NY | General & Unrestricted | $100,000 |
| Sarara Institute | Denver, CO | General & Unrestricted | $50,000 |
| Teton County Search & Rescue Foundation | Jackson, WY | General & Unrestricted | $25,000 |
Names and purposes as reported to the IRS.
Where its grants went
Quick answers
Does Costolo Family Foundation accept grant applications?
According to its Form 990-PF for tax year 2025, Costolo Family Foundation makes contributions only to preselected charitable organizations and does not accept unsolicited requests for funds.
How much does Costolo Family Foundation give each year?
For tax year 2025, it reported $625,000 in grants and contributions paid (7 grants). Giving can change from year to year.
What organizations has Costolo Family Foundation funded?
Its largest grants in tax year 2025 went to Grand Teton National Park Foundation (WY), $150K, Conservation International Foundation (MA), $100K, Elephant Havens Wildlife Foundation Inc (TX), $100K, Pacific Wild Alliance (WA), $100K and The Nature Conservancy (NY), $100K.