Shamrock Trust Dated 04 18 2016
Invitation OnlyTucson, Arizona · EIN 81-2714048 · Private foundation
Half of its grants to organizations were between $100 and $1,000.
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
52% of grants went outside Arizona.
Grants paid in tax year 2025
| Recipient | Location | Purpose | Amount |
|---|---|---|---|
| Forest Highlands Foundation | Flagstaff, AZ | As needed | $5,000 |
| Catholic Foundation | Tucson, AZ | As needed | $3,000 |
| Tucson Museum of Art | Tucson, AZ | As needed | $1,500 |
| Denver Art Museum | Denver, CO | As needed | $1,100 |
| Goldwater Institute | Phoenix, AZ | As needed | $1,000 |
| Gootter Jensen Foundation | Tucson, AZ | As needed | $1,000 |
| Friends of Sabino Canyon | Tucson, AZ | As needed | $500 |
| Holy Names Academy | Seattle, WA | As needed | $500 |
| Leadership Institute | Arlington, VA | As needed | $500 |
| Southeastern Legal Foundation | Roswell, GA | As needed | $500 |
| Literary Society | Chandler, AZ | As needed | $400 |
| St Paul Center | Steubenville, OH | As needed | $250 |
| Dominican Mission Foundation | San Francisco, CA | As needed | $200 |
| Irish Cultural Center | Phoenix, AZ | As needed | $200 |
| National Law Enforcement | Washington, DC | As needed | $200 |
| Az Sonoran Desert Museum | Tucson, AZ | As needed | $169 |
| Parkinson Research Foundation | Washington, DC | As needed | $150 |
| Capital Research Foundation | Washington, DC | As needed | $100 |
| Committee for a Constructive Tomorr | Berryville, VA | As needed | $100 |
| Nau Newman Center | Flagstaff, AZ | As needed | $100 |
| Sound of Freedom Foundation | Murrieta, CA | As needed | $100 |
| St Francis Shelter | Tucson, AZ | As needed | $100 |
| Rezdawg Rescue | Lafayette, CO | As needed | $52 |
The return also lists 20 grants to individuals ($35,190). We do not publish the names of individual recipients.
Giving by year
| Tax year | Grants paid | Grant lines |
|---|---|---|
| 2025 | $51,911 | 43 |
| 2024 | $104,769 | 50 |
| 2023 | $96,264 | 43 |
Sources
- IRS Form 990-PF, tax year 2025, filed Jul 29, 2026 - IRS e-file batch, object ID 202602109349100885
- IRS Tax Exempt Organization Search for EIN 81-2714048
- 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.