· Private foundation
Jeffrey Tarrant 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.
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
- $10k–50k7 grants · $150k
- $50k–250k2 grants · $100k
| Recipient | Amount |
|---|---|
| DANA-FARBER CANCER INSTITUTE & THE JIMMY FUND | $50,000 |
| BREAST CANCER RESEARCH FOUNDATION | $50,000 |
| ROBIN HOOD | $35,000 |
| CHILDREN'S AID | $30,000 |
| CITY OF HOPE MEDICAL FOUNDATION | $25,000 |
| LEUKEMIA & LYMPHOMA SOCIETY INC | $25,000 |
| ST MICHAEL'S SCHOOL AND NURSERY | $15,000 |
| THE TREVOR PROJECT | $10,000 |
| BOSTON CHILDREN'S HOSPITAL TRUST | $10,000 |
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 (FY25–25, $30k) land where the poverty rate runs at 17%, 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.
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.
4 repeat relationships — 3 still active in FY2025, 1 since wound down; 6 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, 28% of grant dollars renewed an existing relationship; $180k 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
Dana-Farber Cancer Institute Inc5× · 2021–2025 · $255k · revenue +44%- CFCANDESCENT FILMS LLC2× · 2017–2018 · $137k
- CHChildren's Hospital Corporation2× · 2024–2025 · $25k · revenue 0%
Funded once
- RRROCK & ROLL HALL OF FAME FOUNDATION INCgraduatedone grant, 2019 · $96k · revenue +298%
- BOBUILDING OPP FOR SELF-SUFFICIENCYgraduatedone grant, 2022 · $15k · revenue +36%
- GAGABRIELLE'S ANGEL FOUNDATION FOR CANCER RESEARCH INCone grant, 2022 · $15k · revenue -11%
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.
Sanford burnham prebys medical discovery institute's mission is to advance the biomedical sciences by cultivating the next generation of scientific leaders, providing meaningful opportunities for researchers of all backgrounds to learn,…
Susan g. komen 's mission is to save lives by meeting the most critical needs in our communities & investing in breakthrough research to prevent & cure breast cancer.
For more than 125 years, the mission of the johns hopkins hospital has been to lead the world in the diagnosis and treatment of disease and to train tomorrow's great physicians, nurses and scientists. above all, we aim to provide the…
Operate a state-of-the-art, world-class genomic research center that creates and uses advanced genomics to understand the genetic basis of disease. for more information, see schedule o.
City of Hope National Medical Center's mission is to make hope a reality for all touched by cancer and diabetes. PLEASE SEE SCHEDULE O FOR A CONTINUATION OF OUR MISSION
The mission of children's hospital & research center at oakland is to protect and advance the health and well-being of children through clinical care, teaching and research.
Susan g. komen has an unmatched, comprehensive 360-degree approach to fighting breast cancer across all fronts and supporting millions of people in the u.s. and in countries worldwide. we advocate for policies to protect patients, drive…
City of Hope's mission is to make hope a reality for all touched by cancer and diabetes. PLEASE SEE SCHEDULE O FOR A CONTINUATION OF OUR MISSION
Please see schedule o
Leadership in the prevention, treatment, and cure of cancer through excellence, vision and cost effectiveness in patient care, outreach programs, research, and education.
The mission of the lung cancer research foundation is to improve lung cancer outcomes by funding research for the prevention, diagnosis, treatment and cure of lung cancer.
For reference, the grantee most central to the portfolio’s shape is The Breast Cancer Research 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.
14 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. 14 of the 15 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 Dana-Farber Cancer Institute Inc ↗
- Who funds ROCK & ROLL HALL OF FAME FOUNDATION INC ↗
- Who funds THE BREAST CANCER RESEARCH FOUNDATION INC ↗
- Who funds ROBIN HOOD FOUNDATION ↗
- Who funds THE CHILDREN'S AID SOCIETY ↗
- Who funds Children's Hospital Corporation ↗
- Who funds CITY OF HOPE MEDICAL FOUNDATION ↗
- Who funds BLOOD CANCER UNITED INC ↗
- Who funds ST MICHAEL'S SCHOOL AND NURSERY INC ↗
- Who funds BUILDING OPP FOR SELF-SUFFICIENCY ↗
- Who funds GABRIELLE'S ANGEL FOUNDATION FOR CANCER RESEARCH INC ↗
- Who funds TREVOR PROJECT INC ↗
- Who funds TOMPKINS CONSERVATION ↗
- Who funds UNCOMMONORG 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 · Paypal Charitable Giving Fund · 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 Jeffrey Tarrant 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.
- St Michael's School and Nursery Inc — 48% of income from government
- Children's Hospital Corporation — 10% of income from government
- Dana-Farber Cancer Institute Inc — 7% 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 Jeffrey Tarrant Family Foundation?
Find your warmest path to Jeffrey Tarrant Family 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.