· Private foundation
Castle 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.
| Recipient | Amount |
|---|---|
| POMFRET SCHOOL | $5,000 |
| Individual grant recipient | $4,645 |
| EASTERN CT SYMPHONY ORCHESTRA | $2,500 |
| LA GRUA CENTER FOUNDATION | $2,100 |
| GRAMPY'S CHARITIES | $2,000 |
| TAFT SCHOOL | $2,000 |
| PRINCETON UNIVERSITY | $1,800 |
| LAWRENCE MEMORIAL HOSPITAL | $1,600 |
| OCEAN COMMUNITY YMCA | $1,000 |
| DARTMOUTH COLLEGE | $1,000 |
| MICHAEL J FOX FOUNDATION | $1,000 |
| COMMUNITY FOUNDATION OF EASTERN CT | $1,000 |
| STONINGTON FREE LIBRARY | $850 |
| STONINGTON CEMETERY ASSN | $550 |
| MYSTIC SEAPORT MUSEUM | $500 |
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, $18k) land where the poverty rate runs at 8%, against an area that typically sits at 10%. 0% of those dollars go to grantees based in above-average-need neighborhoods. Your grants skew toward lower-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 +42% since the first grant, against +21% for the ones you funded once.
33 repeat relationships — 25 still active in FY2025, 8 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, 99% of grant dollars renewed an existing relationship; $400 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 Trustees of Princeton University9× · 2017–2025 · $41k · revenue +5%- PSPOMFRET SCHOOL INCORPORATED9× · 2017–2025 · $35k · revenue +29%
- TTTHE TAFT SCHOOL CORPORATION9× · 2017–2025 · $18k · revenue +135%
Funded once
- FIFIDELITY INVESTMENTSone grant, 2017 · $103k
- RMRONALD MCDONALD HOUSE CHARITIES FLone grant, 2024 · $2k
- MAMYSTIC AQUARIUMone grant, 2024 · $1k
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 University of New Haven is a student-centered comprehensive university with an emphasis on excellence in liberal arts and professional education. Our mission is to prepare our students to lead purposeful and fulfilling lives in a…
Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.
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.
Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.
(see schedule o)the stony brook school is an independent college preparatory school (grades 7-12) that exists to challenge young men and women to know jesus christ as lord, to love others as themselves, and to grow in knowledge and skill,…
Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.
The bac is committed to provide excellence in design education grounded in practice and accessible to diverse communities.
Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.
Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.
Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.
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.
Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.
For reference, the grantee most central to the portfolio’s shape is The Taft School Corporation and the most unlike its peers is Grampy's Charities James Jonatha William Castle Ttees. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
Your grantees are a median of 48 years old; the field is 21. You back the established end — and your money leans older still.
The field is 18% startups (under 5 years old) — 0% of your grantees by number, and just 0% of your money.
The orgs you fund almost never close — 0.0% 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.
21 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. 21 of the 42 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 The Trustees of Princeton University ↗
- Who funds POMFRET SCHOOL INCORPORATED ↗
- Who funds THE TAFT SCHOOL CORPORATION ↗
- Who funds LAWRENCE MEMORIAL HOSPITAL INC ↗
- Who funds GRAMPY'S CHARITIES JAMES JONATHA WILLIAM CASTLE TTEES ↗
- Who funds STONINGTON COMMUNITY CENTER INC ↗
- Who funds THE STONINGTON FREE LIBRARY INC ↗
- Who funds Trustees of Dartmouth College ↗
- Who funds OCEAN COMMUNITY YMCA ↗
- Who funds PINE POINT SCHOOL INC ↗
- Who funds STONINGTON CEMETERY ASSOCIATION INC ↗
- Who funds THE MICHAEL J FOX FOUNDATION FOR PARKINSON'S RESEARCH ↗
- Who funds Stonington Village Improvement Assoc Inc ↗
- Who funds STONINGTON HISTORICAL SOCIETY INC ↗
- Who funds MYSTIC SEAPORT MUSEUM INC ↗
- Who funds BOSTON YOUTH SYMPHONY ORCHESTRAS INC ↗
- Who funds HAITIAN HEALTH FOUNDATION ↗
- Who funds THE TRUST FOR PUBLIC LAND ↗
- Who funds ALWAYS HOME INC ↗
- Who funds Snow Leopard Conservancy ↗
- Who funds WIKIMEDIA FOUNDATION 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: The Pfizer Foundation Inc · Doogood Foundation Inc · Royce Family Fund Inc · Chelsea Groton Foundation · Dxn Foundation · Tua Benson P Blake Char Trust · The Michael & Dudley Delbalso Charitable Trust · Fromson Foundation Inc · Gs Donor Advised Philanthropy Fund for Wealth Management Inc · Ibm International Foundation · National Philanthropic Trust · Morgan Stanley Global Impact Funding Trust 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 Castle 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.
- The Trustees of Princeton University — 11% of income from government
- Mystic Seaport Museum Inc — 5% of income from government
- The Stonington Free Library Inc — 2% of income from government
- Stonington Village Improvement Assoc Inc — 2% of income from government
- Boston Youth Symphony Orchestras Inc — 1% of income from government
- Lawrence Memorial Hospital 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.