· Private foundation
Thomas M & Nancy H O'Neill 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.
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 $10k1 grant · $3k
- $10k–50k3 grants · $100k
| Recipient | Amount |
|---|---|
| Galisano Children's Museum of Naples | $40,000 |
| Medicines for Humanity | $35,000 |
| Harvard College | $25,000 |
| The Joey Fund | $3,000 |
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 (FY17–22, $8k) land where the poverty rate runs at 15%, 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.
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 +87% since the first grant, against +84% for the ones you funded once.
14 repeat relationships — 4 still active in FY2025, 10 since wound down.
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, 100% of grant dollars renewed an existing relationship; $0 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
- MFMEDICINES FOR HUMANITY INC9× · 2017–2025 · $280k · revenue +15%
- GCGOLISANO CHILDREN'S MUSEUM OF NAPLES INC4× · 2021–2025 · $63k · revenue +87%
Dana-Farber Cancer Institute Inc3× · 2017–2019 · $15k · revenue +132%
Funded once
- CHChildren's Hospital Corporationgraduatedone grant, 2022 · $10k · revenue +27%
- CHChildren's Hospital Circle of Careone grant, 2017 · $10k
- NCNaples Children's Museumone 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.
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.
Mcphs university prepares students for careers in health care through teaching, scholarship, research, professional service and community engagement.
The Foundation's mission is to provide pathology services primarily to patients at Boston Children's Hospital and at satellite locations. The Foundation carries on and promotes basic and applied medical research and education in the field…
The Foundation provides neurosurgical services primarily to patients at Boston Children's Hospital and at satellite locations. The Foundation carries on and promotes basic and applied medical research and education in the field of…
Northeast college of health sciences (the college) is committed to academic excellence, leadership, and professional best practices in the health sciences.
The Organization operates exclusively for the benefit of the charitable purposes of Boston Children's Hospital (the Hospital) and the affiliated Foundations. It works jointly with the Hospital and the Foundations in developing and…
To operate exclusively for the benefit of The Children's Hospital Corporation and its affiliated organizations in the conduct of their charitable, educational and scientific functions.
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 Foundation's mission is to provide ophthalmology services primarily to patients at Boston Children's Hospital and at satellite locations. The Foundation carries on and promotes basic and applied medical research and education in the…
The bac is committed to provide excellence in design education grounded in practice and accessible to diverse communities.
Bates is a college of the liberal arts and sciences, and is a coeducational, nonsectarian, residential college with special commitments to academic rigor, and to assuring in all of its efforts the dignity of each individual, and access to…
For reference, the grantee most central to the portfolio’s shape is Naples Children Foundation Inc and the most unlike its peers is Dana-Farber Cancer Institute Inc. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
12 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. 12 of the 24 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 MEDICINES FOR HUMANITY INC ↗
- Who funds GOLISANO CHILDREN'S MUSEUM OF NAPLES INC ↗
- Who funds President and Fellows of Harvard College ↗
- Who funds BRIDGE BOSTON FOUNDATION INC ↗
- Who funds Dana-Farber Cancer Institute Inc ↗
- Who funds NANTUCKET GOLF CLUB FOUNDATION INC ↗
- Who funds Children's Hospital Corporation ↗
- Who funds The Peter G Colton Memorial Fund ↗
- Who funds PINE STREET INN INC ↗
- Who funds ROSIE'S PLACE INC ↗
- Who funds NAPLES CHILDREN FOUNDATION INC ↗
- Who funds My Brothers Keeper Inc ↗
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: Vanguard Charitable Endowment Program · Donor Advised Charitable Giving Inc · Fidelity Investments Charitable Gift Fund
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 Thomas M & Nancy H O'Neill 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.
- Children's Hospital Corporation — 12% of income from government
- Pine Street Inn Inc — 11% of income from government
- President and Fellows of Harvard College — 10% of income from government
- Dana-Farber Cancer Institute Inc — 8% 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.
Warm introductions · Powered by PlinthPlus
How do I get to Thomas M & Nancy H O'Neill Foundation?
Find your warmest path to Thomas M & Nancy H O'Neill Foundation through trustees and officers whose names appear on both boards. Search for your organization and Plinth traces the shortest route it can evidence.
Each link is a name appearing on two organizations’ public IRS 990 filings, matched on that name and, where the filings support it, on location. A same-state match has geographic support, which is a second matching feature rather than confirmation that the two are one person; a cross-state one is the likeliest to be two people who share a name. Every hop shows its tier, low-confidence and distant paths are held back rather than guessed, and it is worth confirming the person before you use the introduction.