Castaing Family Foundation
Invitation OnlyScottsdale, Arizona · EIN 38-3443775 · Private foundation
Grants paid (2025)$53K
Organizations funded8
Typical grant$1,000
Total assets$493K
Half of its grants to organizations were between $500 and $5,000.
From the return
How to apply
On its return for tax year 2025 the foundation checked the box saying it only makes contributions to preselected charitable organizations and does not accept unsolicited requests for funds.
What it funds
Share of grant lines on the latest return, classified from the purpose each grant states.
Where it gives
87% of grants went outside Arizona.
Grants paid in tax year 2025
| Recipient | Location | Purpose | Amount |
|---|---|---|---|
| Mayo Clinic | Rochester, MN | General Fund | $20,000 |
| Michigan Science Center | Detroit, MI | General Fund | $20,000 |
| Detroit Symphony Orchestra | Detroit, MI | General Fund | $5,000 |
| Play Works | Oakland, CA | General Fund | $5,000 |
| American Red Cross | Detroit, MI | General Fund | $1,000 |
| Friends of Public Radio AZ | Tempe, AZ | General Fund | $1,000 |
| Detroit Inst of Arts | Detroit, MI | General Fund | $500 |
| National Park Foundations | Washington, DC | General Fund | $500 |
Giving by year
| Tax year | Grants paid | Grant lines |
|---|---|---|
| 2025 | $53,000 | 8 |
| 2024 | $79,000 | 10 |
| 2023 | Unknown | 0 |
Sources
- IRS Form 990-PF, tax year 2025, filed Apr 20, 2026 - IRS e-file batch, object ID 202641109349100134
- IRS Tax Exempt Organization Search for EIN 38-3443775
- Profile updated Nov 6, 2026
Facts on this page come from the foundation's own IRS Form 990-PF filings as published by the IRS. Grantvello does not know whether a foundation is accepting proposals right now: a past grant is not an open opportunity. Always confirm current guidelines with the funder before applying.