· Private foundation
The Shamrock Trust
Its FY2024 filing reports that it funds preselected organizations and did not take unsolicited requests; check the foundation's own site before ruling it out.
What you funded, over time
Every grant placed by its stated purpose and the recipient’s mission, by year — across FY2018–2024.
Where the money goes
Your grants by size, and where they go.
By grant size · FY2024
- Under $10k48 grants · $45k
- $10k–50k1 grant · $10k
- $50k–250k1 grant · $50k
| Recipient | Amount |
|---|---|
| Individual grant recipient | $50,000 |
| CATHOLIC COMMUNITY SERVICES | $10,000 |
| TUNNEL TO TOWERS | $5,000 |
| GOLDWATERS INSTITUTE | $5,000 |
| ANNUAL CATHOLIC APPEAL | $5,000 |
| FOREST HIGHLANDS FOUNDATION | $5,000 |
| LITERACY CONNECTS | $2,000 |
| SAN FRANCISCO DE ASIS | $1,500 |
| ST THOMAS THE APOSTLE | $1,500 |
| TUCSON MUSEUM OF ART | $1,500 |
| DENVER ART MUSEUM | $1,100 |
| ST JUDES | $1,000 |
| PATRONATO OF SAN XAVIER | $1,000 |
| CHILD HELP | $1,000 |
| ST VINCENT DE PAUL | $1,000 |
Do your dollars go where the need is?
Each grant placed by the hardship in its grantee’s ZIP, then read against the area’s typical level.
Your human-services grants (FY19–24, $4k) land where the poverty rate runs at 12%, against an area that typically sits at 10%. 100% of those dollars go to grantees based in above-average-need neighborhoods. Most of your grants land in higher-need ZIPs.
Matched: human-services grants are those whose grantee’s IRS cause code is Human Services. Placed by people below the poverty linein the grantee’s ZIP, averaged from the tracts in that ZIP; grantee ZIP can differ from where services are delivered.
Which US states your grants reach
US grants placed by each grantee’s ZIP, which can differ from where services are actually delivered. Need from public data — U.S. Census/ACS, CDC PLACES, Eviction Lab, USDA — shown as context about the area, never attributed to your giving.
Who you back again
Which organizations you funded more than once, and which you funded a single time. Each grantee is matched to its own filings.
And the relationships you keep tend to grow: grantees you re-up on have seen median revenue of +46% since the first grant, against +1% for the ones you funded once.
36 repeat relationships — 17 still active in FY2024, 19 since wound down; 27 grantees were first funded in FY2024 (too recent to call).
How the two cohorts compare
Organizations
Total granted
Median revenue growth · since first grant
Still filing today
New vs renewed · share of each year
In FY2024, 33% of grant dollars renewed an existing relationship; $69k went to new ones.
Where new relationships form · theme of each grantee’s first grant
First-time = a grantee’s first year in your filing window; renewed = funded in an earlier year too. As a portfolio matures the renewed share naturally climbs — once funded, an org stays “renewable” — so the signal is the years that buck it (a new-grantee intake wave). The earliest year is left-censored: relationships that predate the data read as “new.” Theme is the grantee’s IRS cause.
Backed again, and grew
- AFAMERICANS FOR PROSPERITY3× · 2018–2023 · $12k · revenue +132%
- TMTUCSON MUSEUM OF ART AND HISTORIC BLOCK INC6× · 2019–2024 · $10k · revenue +50%
- BABanner Alzheimer's Foundation2× · 2019–2022 · $6k · revenue +44%
Funded once
- TNTRINITY NEWMAN CENTERone grant, 2023 · $50k
- IGIndividual grant recipientone grant, 2022 · $10k
- MCMAYO CLINIC FOUNDATIONone grant, 2023 · $5k
Repeat = funded in two or more distinct years; growth and survival are read from each grantee’s own subsequent IRS filings.
The map has a center of gravity: the average direction from the rest of the sector toward the organizations the foundation funds — the shape of its giving. Scoring every nonprofit along that direction surfaces the ones that look most like the portfolio. These are the closest matchesthat aren’t grantees — a resemblance in what they say they do, not a recommendation.
The institute's mission is to conduct research on key issues facing society to help both the church and society deal thoughtfully with the major issues they face globally. the institute also sponsors and conducts research and scholarship…
The open markets institute works to help people relearn how to use competition policy to build stronger democracies, more just and equitable societies, more innovative and sustainable economies, and a more secure and peaceful world.
The american enterprise institute is a community of scholars and supporters committed to expanding liberty, increasing individual opportunity, and strengthening free enterprise. aei pursues these ideals through independent thinking and the…
Rooted in the liberal arts & sciences & lutheran expression of the christian faith, & is committed to offering a challenging education that develops qualities of mind, spirit, & body necessary for a rewarding life of leadership & service…
The santa fe institute is a transdisciplinary research community that expands the boundaries of scientific understanding. its aim is to discover, comprehend, and communicate the common fundamental principles in complex physical,…
The bac is committed to provide excellence in design education grounded in practice and accessible to diverse communities.
Provide an independent forum for those who dare to read, think, speak, and write to advance the professional, literary, and scientific understanding of sea power and other issues critical to global security.
Pew Research Center is a nonpartisan "fact tank" that informs the public about the issues, attitudes and trends shaping America and the world. Pew Research Center generates a foundation of facts that enriches the public dialogue and…
The peterson institute for international economics (piie) is an independent nonprofit, nonpartisan research organization dedicated to strengthening prosperity and human welfare in the global economy through expert analysis and practical…
The mission of the george washington university (gw) is to educate individuals in liberal arts, languages, sciences, learned professions, and other courses and subjects of study, and to conduct scholarly research and publish the findings…
Undergraduate, graduate, and professional education and research across a broad array of academic domains.
Help improve policy and decision making through research and analysis.
For reference, the grantee most central to the portfolio’s shape is The Claremont Institute for the Study of Statesmanship & Political Philosophy and the most unlike its peers is Arizona-Sonora Desert Museum. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
For each theme you fund, this compares how the sector’s money is shifting with how your own giving is shifting.
Sector change and giving change are each shown relative to their own range, growing (right) or shrinking (left); both normalized, so inflation isn’t mistaken for growth.
Your grantees are a median of 39 years old; the field is 12. You back the established end — and your money leans older still.
The field is 28% startups (under 5 years old) — 5% of your grantees by number, and just 22% of your money.
The orgs you fund almost never close — 0.0% lost their exemption, against 16% of the field you don’t fund.
Age = years since IRS exemption (a founding proxy). “Closed” = auto-revocation for 3 years of non-filing — a floor on closure, not proof, and bigger established orgs lapse least. Association, not causation.
40 grantees tracked through their own filings, 2017–2025.
Each one resolved to its own IRS returns and tracked year by year — your grant beside their revenue from every source. Association, dated; never a causal claim.
Counted here: distinct organizations you funded across 2017–2025, not grant rows in a single year — so this will not match the grant count on the cover. 40 of the 111 grantees resolved in that span have returns of their own we could reconcile; the rest are funded organizations whose filings we could not track year by year.
Where your money sits — by cause, then by grantee
Each org by its size and your share of it — top-left is where you’re load-bearing
Go grantee by grantee — a decade per org, and how each moved after you funded them
A decade per grantee — revenue shaded, your grants as bars, all rows on one timeline.
- Who funds Forest Highlands Foundation ↗
- Who funds AMERICANS FOR PROSPERITY ↗
- Who funds TUCSON MUSEUM OF ART AND HISTORIC BLOCK INC ↗
- Who funds Banner Alzheimer's Foundation ↗
- Who funds Leadership Institute ↗
- Who funds DENVER ART MUSEUM ↗
- Who funds JUDICIAL WATCH INC ↗
- Who funds DIOCESAN COUNCIL FOR THE SOCIETY OF ST VINCENT DE PAUL DIOCESE PHOENIX ↗
- Who funds CHILDHELP INC ↗
- Who funds PATRONATO SAN XAVIER ↗
- Who funds STEPHEN SILLER TUNNEL TO TOWERS FOUNDATION ↗
- Who funds LITERACY CONNECTS ↗
- Who funds FREEDOM CENTER INC ↗
- Who funds FRIENDS OF SABINO CANYON INC ↗
- Who funds BARRY GOLDWATER INSTITUTE FOR PUBLIC POLICY RESEARCH ↗
- Who funds THE FUND FOR AMERICAN STUDIES ↗
- Who funds TAX FOUNDATION ↗
- Who funds SOUTHEASTERN LEGAL FOUNDATION INC ↗
- Who funds GOOTTER-JENSEN FOUNDATION ↗
The grantmakers whose grantees overlap with yours far more than size alone predicts. Each orbits closer the stronger the alignment; the arcs between them show where they also fund each other. Here it reads as a tightly interlocked camp — most of these funders back each other's grantees too.
Open a dossier: The Shamrock Foundation · Community Foundation for Southern Arizona · Arizona Community Foundation · William and Mary Ross Foundation · Connie Hillman Family Foundation · Jewish Community Foundation of Southern Arizona · The Hs Lopez Family Foundation · United Way of Tucson and Southern Arizona Inc · National Philanthropic Trust · Vanguard Charitable Endowment Program · Morgan Stanley Global Impact Funding Trust Inc · Donor Advised Charitable Giving Inc
Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. A research starting point: overlap is association, not proof of shared intent.
Government reliance of your grantees
Every dot is one organization The Shamrock Trust funds. Left–right is the share of its income from government; up–down is the share from you. Bigger dots raise more. Filter to federal or a single department — and drag the year to watch it move.
Government income is each org’s traced federal awards (USASpending — grants and contracts) plus state payments (open checkbooks) as a share of its total revenue (IRS Form 990); the self-reported government-grant line (990 line 1e) is carried for cross-check: a grantee that reports government grants we could not trace to a source is left off the chart rather than shown as receiving none. An association, not a claim that your grant caused the public funding. Coverage is precision-first — a floor, not a census; state records exist for 9 states, so a grantee outside them shows no state figure (dimmed) rather than a false zero. Federal award amounts are obligations, which can span years, so a single-year share is indicative. 990 filings lag 12–24 months.