Castiglione A Casauria Foundation
Historical FunderHonolulu, Hawaii · EIN 94-3275970 · Private foundation
Half of its grants to organizations were between $1,000 and $10,000.
How to apply
The foundation filed the following application information (Form 990-PF Part XV, tax year 2025):
| Contact | Castiglione A Casauria Foundation |
|---|---|
| Address | 600 Puuloa Road, Honolulu HI 968192003 |
| Phone | 8088312500 |
| not applicable | |
| Form and materials | Letter stating purpose |
| Deadlines | September 30th of each year |
| Restrictions | None |
Copied as filed. Deadlines on a tax return describe the foundation's usual process; they are not confirmation of a current open cycle.
What it funds
Share of grant lines on the latest return, classified from the purpose each grant states.
Where it gives
11% of grants went outside Hawaii.
Grants paid in tax year 2025
| Recipient | Location | Purpose | Amount |
|---|---|---|---|
| Punahou School | Honolulu, HI | General Fund | $25,000 |
| Kapiolani Health Foundation | Honolulu, HI | General Fund | $20,000 |
| University of San Diego | San Diego, CA | Grant | $15,000 |
| Rehab Foundation | Honolulu, HI | General Fund | $11,000 |
| Straub Foundation | Honolulu, HI | General Fund | $10,000 |
| Honolulu Symphony Foundation | Honolulu, HI | Grant | $10,000 |
| Belgian Sheepdog Rescue Trust | Avon, NY | General Fund | $5,000 |
| Hawaii Kai Koa Foundation | Honolulu, HI | Grant | $5,000 |
| Grassroot Institute of Hawaii | Honolulu, HI | General Fund | $2,500 |
| Aloha Council Boy Scouts of America | Honolulu, HI | General Fund | $2,000 |
| Friends of Kewalos | Honolulu, HI | General Fund | $2,000 |
| Tax Foundation of Hawaii | Honolulu, HI | General Fund | $2,000 |
| American Cancer Society | Honolulu, HI | Grant | $2,000 |
| Hawaiian Humane Society | Honolulu, HI | General Fund | $1,000 |
| St Andrews Priory School | Honolulu, HI | General Fund | $1,000 |
| Historic Hawaii Foundation | Honolulu, HI | Grant | $1,000 |
| Hawaii Children's Cancer Foundation | Honolulu, HI | Grant | $1,000 |
| Hawaii Hotel Industry Foundation | Honolulu, HI | Grant | $500 |
The return also lists 5 grants to individuals ($79,000). We do not publish the names of individual recipients.
Giving by year
| Tax year | Grants paid | Grant lines |
|---|---|---|
| 2025 | $195,000 | 23 |
| 2024 | $193,500 | 22 |
| 2023 | $197,100 | 15 |
Sources
- IRS Form 990-PF, tax year 2025, filed May 8, 2026 - IRS e-file batch, object ID 202631289349102453
- IRS Tax Exempt Organization Search for EIN 94-3275970
- Profile updated Nov 5, 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.