· Private foundation
Theodore a Rapp Foundation
Its FY2025 filing reports that it accepted unsolicited grant applications.
What you funded, over time
Every grant placed by its stated purpose and the recipient’s mission, by year — across FY2021–2025.
Where the money goes
Your grants by size, and where they go.
By grant size · FY2025
- Under $10k5 grants · $23k
- $10k–50k3 grants · $45k
- $50k–250k6 grants · $415k
| Recipient | Amount |
|---|---|
| WEILL CORNELL MEDICINE | $100,000 |
| DARROW SCHOOL | $100,000 |
| MICHAEL J FOX FOUNDATION | $60,000 |
| SAMUEL WAXMAN CANCER RESEARCH FOUNDATION | $55,350 |
| ALS ASSOCIATION | $50,000 |
| ALZHEIMERS ASSOCATION | $50,000 |
| AMERICAN CANCER SOCIETY | $20,000 |
| Individual grant recipient | $15,000 |
| AMERICAN BALLET THEATER | $10,000 |
| NEW CANAAN LIBRARY | $6,000 |
| WAVENY PARK CONSERVANCY | $6,000 |
| TOWN PLAYERS OF NEW CANAAN | $5,000 |
| SENIOR CENTER OF NEW CANAAN | $5,000 |
| JUNIOR LEAGUE OF CHARLOTTE | $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.
Dollar for dollar, your grants (FY21–25) land where the poverty rate runs at 16%, against an area that typically sits at 14%. 66% of your 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 +15% since the first grant, against 0% for the ones you funded once.
18 repeat relationships — 12 still active in FY2025, 6 since wound down; 2 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, 97% 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
THE MICHAEL J FOX FOUNDATION FOR PARKINSON'S RESEARCH5× · 2021–2025 · $256k · revenue +43%- MMMONTEFIORE MEDICAL CENTER2× · 2021–2022 · $75k · revenue +39%
MEDECINS SANS FRONTIERES USA INC2× · 2021–2022 · $50k · revenue +20%
Funded once
- AHAmerican Heart Association Incgraduatedone grant, 2021 · $25k · revenue +33%
- SOSCHOOL OF AMERICAN BALLET INCone grant, 2024 · $5k · revenue 0%
- NSNOEL SHOE MUSEUMone grant, 2023 · $2k
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.
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.
Nyu is a private university with approximately 60,000 matriculating students in 20 schools and institutes. nyu's primary missions are education, research and scholarship, and patient care.
The museum's mission statement is: "to discover, interpret, and disseminate - through scientific research and education - knowledge about human cultures, the natural world, and the universe."
Leadership in the prevention, treatment, and cure of cancer through excellence, vision and cost effectiveness in patient care, outreach programs, research, and education.
The institute for advanced study (the institute) is one of the world's leading centers for theoretical research and intellectual inquiry. see schedule o.
Perform, promote and sustain classical ballet.
The Morgan Library & Museum celebrates and shares the history and process of human creativity from antiquity to the present day through the preservation, study, and interpretation of a dynamic and growing collection.
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,…
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…
Balletx expands the vocabulary of contemporary ballet for all audiences through innovative performances, world premiere choreography, dance education, and community programs.
The mission of ynhh is to provide innovative and excellent patient care, teaching, research, and service to the communities it serves.
Mission: to heal, to teach, to discover and to advance the health of the communities we serve. values: humanity, innovation, teamwork, diversity and equity - our values define our philosophy of care. they shape our actions and motivate and…
For reference, the grantee most central to the portfolio’s shape is Montefiore Medical Center and the most unlike its peers is Noel Shoe Museum. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
15 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. 15 of the 23 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 SAMUEL WAXMAN CANCER RESEARCH FOUNDATION ↗
- Who funds THE MICHAEL J FOX FOUNDATION FOR PARKINSON'S RESEARCH ↗
- Who funds DARROW SCHOOL ↗
- Who funds MONTEFIORE MEDICAL CENTER ↗
- Who funds MEDECINS SANS FRONTIERES USA INC ↗
- Who funds GREENWICH HOSPITAL ↗
- Who funds American Heart Association Inc ↗
- Who funds THE NEW CANAAN LIBRARY INC ↗
- Who funds WAVENY PARK CONSERVANCY INC ↗
- Who funds NEW YORK PUBLIC RADIO ↗
- Who funds TOWN PLAYERS OF NEW CANAAN INC ↗
- Who funds BALLET THEATRE FOUNDATION INC ↗
- Who funds SCHOOL OF AMERICAN BALLET INC ↗
- Who funds NOEL SHOE MUSEUM ↗
- Who funds The Junior League of Charlotte 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: Donor Advised Charitable Giving 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 Theodore a Rapp 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.
- Town Players of New Canaan Inc — 2% of income from government
- Greenwich Hospital — 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.
Warm introductions · Powered by PlinthPlus
How do I get to Theodore a Rapp Foundation?
Find your warmest path to Theodore a Rapp 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.