· Private foundation
The Tiller Family Foundation
Its FY2025 filing reports that it funds preselected organizations and did not take unsolicited requests; check the foundation's own site before ruling it out.
Read this first · the figures below need context
52% of The Tiller Family Foundation’s FY2025 grant dollars went to Mayo Clinic, not to grantees.
Its money now reaches organizations through that sponsor, which does not report who recommended each grant. FY2025 names 10 organizations directly, so a portfolio cannot be read from it.
Organizations named directly on the return
Amber years are those where most dollars went to a sponsor.
What you funded, over time
Every grant placed by its stated purpose and the recipient’s mission, by year — across FY2017–2025.
Where the money goes
Your grants by size, and where they go.
By grant size · FY2025
- Under $10k12 grants · $36k
- $10k–50k1 grant · $10k
- $50k–250k1 grant · $50k
| Recipient | Amount |
|---|---|
| MAYO CLINIC | $50,000 |
| DATTILIO MEDICAL MISSION | $10,000 |
| FRIENDS OF THE CHARLOTTE NEWS | $7,000 |
| ARIZONA STATE UNIVERSITY FOUNDATION | $6,000 |
| OUR LADY OF MOUNT CARMEL PARISH | $5,000 |
| SHELBURNE MUSEUM INC | $3,000 |
| OUR LADY OF JOY CATHOLIC PARISH | $3,000 |
| ORDWAY CENTER FOR THE PERFORMING ARTS | $2,500 |
| SHELBURNE FARMS | $2,500 |
| THE CHARLOTTE FOOD SHELF | $2,000 |
| CHILDREN OF FALLEN PATRIOTS FDN | $1,500 |
| SPECIAL FORCES FOUNDATION | $1,000 |
| FRIENDS OF CHARLOTTE SENIOR CENTER | $1,000 |
| DESERT FOOTHILLS THEATER | $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 (FY17–25, $7k) land where the poverty rate runs at 10%, against an area that typically sits at 7%. 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 +72% since the first grant, against +22% for the ones you funded once.
15 repeat relationships — 9 still active in FY2025, 6 since wound down; 4 grantees were first funded in FY2025 (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 FY2025, 68% of grant dollars renewed an existing relationship; $15k 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
ARIZONA STATE UNIVERSITY FOUNDATION FOR A NEW AMERICAN UNIVERSITY7× · 2017–2025 · $43k · revenue +196%
SHELBURNE FARMS7× · 2019–2025 · $21k · revenue +257%- SMSHELBURNE MUSEUM INC7× · 2019–2025 · $19k · revenue +261%
Funded once
- TOTown of Charlotteone grant, 2019 · $20k
- POPLACE OF HOPE HAITIone grant, 2017 · $10k
- FBFAIRVIEW BEHAVIORAL SERVICESone grant, 2017 · $10k
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.
To enrich the community by producing and presenting exceptional live theatre that touches the heart, engages the mind and delights the spirit.
Undergraduate, graduate, and professional education and research across a broad array of academic domains.
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,…
Dartmouth College educates the most promising students and prepares them for a lifetime of learning and of responsible leadership, through a faculty dedicated to teaching and the creation of knowledge.
The primary mission of furman as a liberal arts institution is to provide a distinctive education in fine arts, humanities, social sciences, mathematics and the sciences, as well as selected professional disciplines.
We champion the health needs of children and families. we are committed to improving children's health by providing the highest-quality, family centered care, advanced through research and education.
The mission of mit is to advance knowledge and educate students in science, technology, and other areas of scholarship that will best serve the nation and the world in the 21st century.
Endicott college offers students a vibrant academic environment that remains true to its founding principle of integrating professional and liberal arts with experiential learning. for more information see schedule o.
The mission of lowell observatory is to pursue the study of astronomy, especially the study of our solar system and its evolution; to conduct pure research in astronomical phenomena; and to maintain quality public education and outreach…
To support charitable, plant-based scientific, and educational activities exclusively for the benefit of the minnesota landscape arboretum of the university of minnesota
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…
Dickinson college provides a useful, innovative and interdisciplinary education in the liberal arts and sciences to prepare students to lead rich and fulfilling lives of engaged global citizenship
For reference, the grantee most central to the portfolio’s shape is Special Olympics Massachusetts Inc and the most unlike its peers is Zenith Services Incorporated. 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 36 years old; the field is 20. You back the established end — and your money leans older still.
The field is 17% startups (under 5 years old) — 0% of your grantees by number, and just 0% of your money.
The orgs you fund almost never close — 3% lost their exemption, against 10% 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.
24 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. 24 of the 46 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 MAYO CLINIC ↗
- Who funds ARIZONA STATE UNIVERSITY FOUNDATION FOR A NEW AMERICAN UNIVERSITY ↗
- Who funds SHELBURNE FARMS ↗
- Who funds SHELBURNE MUSEUM INC ↗
- Who funds PLACE OF HOPE IN HAITI INC ↗
- Who funds Children of Fallen Patriots Foundation ↗
- Who funds GUTHRIE THEATER FOUNDATION ↗
- Who funds HENNEPIN THEATRE TRUST ↗
- Who funds CHARLOTTE FOOD SHELF INC ↗
- Who funds VERMONT FLIGHT ACADEMY INC ↗
- Who funds ORDWAY CENTER FOR THE PERFORMING ARTS ↗
- Who funds ZION NATURAL HISTORY ASSOCIATION ↗
- Who funds THE EDINA CRIME PREVENTION FUND INC ↗
- Who funds CHARLOTTE FIRE AND RESCUE SERVICES INC ↗
- Who funds RYAN HOUSE ↗
- Who funds LEADER DOGS FOR THE BLIND ↗
- Who funds FOOTHILLS COMMUNITY FOUNDATION INC ↗
- Who funds SPECIAL OLYMPICS MINNESOTA INC ↗
- Who funds PAN-MASSACHUSETTS CHALLENGE INC ↗
- Who funds ZENITH SERVICES INCORPORATED ↗
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: Morgan Stanley Global Impact Funding Trust Inc · National Philanthropic Trust · Donor Advised Charitable Giving Inc · American Online Giving Foundation Inc · Fidelity Investments Charitable Gift Fund · Amazonsmile Foundation
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 Tiller Family Foundation 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, a single department, or state — and drag the year to watch it move.
- Shelburne Museum Inc — 9% of income from government
- Shelburne Farms — 3% of income from government
- Special Olympics Massachusetts Inc — 1% of income from government
- Pan-Massachusetts Challenge Inc — 0% of income from government
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.