· Private foundation
The Sternbergh Foundation Ltd
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 $10k5 grants · $3k
- $10k–50k2 grants · $42k
| Recipient | Amount |
|---|---|
| NANTUCKET COTTAGE HOSPITAL | $31,500 |
| CLEVELAND CLINIC MARTIN HEALTH | $10,000 |
| SAILFISH POINT FDN | $2,000 |
| UNITED WAY OF MARTIN COUNTY | $1,000 |
| SWIM ACROSS AMERICA | $200 |
| NANTUCKET HISTORICAL ASSOC | $150 |
| TOM NEVERS CIVIC ASSOCIATION | $50 |
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 (FY17–21, $2k) land where the poverty rate runs at 10%, against an area that typically sits at 12%. 6% 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.
21 repeat relationships — 6 still active in FY2025, 15 since wound down; 1 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, 100% of grant dollars renewed an existing relationship; $50 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
- SPSAILFISH POINT FOUNDATION INC9× · 2017–2025 · $16k · revenue +60%
- CRCANCER RESEARCH INSTITUTE INC8× · 2017–2024 · $4k · revenue +43%
- GCGREENWICH COUNTRY DAY SCHOOL INC6× · 2017–2022 · $3k · revenue +182%
Funded once
- BGBOYS & GIRLS CLUB OF MARTIN COUNTYgraduatedone grant, 2018 · $500 · revenue +511%
- FOFLORIDA OCEANOGRAPHIC SOCIETY INCone grant, 2019 · $484 · revenue +12%
- IGIndividual grant recipientone grant, 2019 · $250
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 nantucket conservation foundation owns, protects, and stewards over 9,000 acres of land and coastal shoreline, conserves nantucket's rare and significant natural resources, and engages in impactful ecological research to inform…
To engage people of all ages in the joy of sailing, offering access to all nantucket's youth, and teaching every participant in our programs enduring life and leadership skills, with a deep respect for the marine environment.
To provide means for the recreation and entertainment of its members, by establishing and maintaining a club with the proper buildings, grounds, and facilities to promote yachting, sports and social activities.
The nantucket atheneum, a private non-profit organization provides public library service to the island's year-round and seasonal residents, housed in a historic 1847 building and the weezie library for children. the atheneum collects,…
The norwalk seaport association, inc. offers a cultural, environmental, and historical journey to the norwalk islands. the sheffield island lighthouse and the light keeper's cottage provide a unique historical and educational venue which…
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.
To enrich the cultural life of the island by fostering and supporting music education and performance opportunities for young people and adults.
Rimta's mission is to champion the rhode island marine industry through advocacy, education, environmental stewardship, innovation and promotion.
Support and encourage a collaborative community of the visual, performing and literary arts through education, grants, scholarships and events.
Saint anselm is a catholic, benedictine college providing all of its students a distinctive liberal arts education that incorporates opportunities for professional and career preparation. it does so in a learning community that encourages…
To generate private support for public education on nantucket, to foster private and public partnerships that benefit the children of nantucket public schools, and to honor excellence in teaching and learning.
The new england aquarium is a catalyst for global change through public engagement and education, commitment to marine animal conservation, innovative scientific research, and effective advocacy for a vital and vibrant ocean.
For reference, the grantee most central to the portfolio’s shape is The Community Foundation - Martin / St Lucie Inc and the most unlike its peers is Pomona College. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
19 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. 19 of the 38 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 SAILFISH POINT FOUNDATION INC ↗
- Who funds UNITED WAY OF MARTIN COUNTY INC ↗
- Who funds CANCER RESEARCH INSTITUTE INC ↗
- Who funds GREENWICH COUNTRY DAY SCHOOL INC ↗
- Who funds THE COMMUNITY FOUNDATION - MARTIN / ST LUCIE INC ↗
- Who funds PROJECT LIFT INC ↗
- Who funds ARTISTS ASSOCIATION OF NANTUCKET INC ↗
- Who funds NANTUCKET HISTORICAL ASSOCIATION ↗
- Who funds Swim Across America Inc ↗
- Who funds NANTUCKET DREAMLAND FOUNDATION INC ↗
- Who funds BOYS & GIRLS CLUB OF MARTIN COUNTY ↗
- Who funds FLORIDA OCEANOGRAPHIC SOCIETY INC ↗
- Who funds NANTUCKET POLICE CHARITABLE ASSOCIATION INC ↗
- Who funds NANTUCKET MARIA MITCHELL ASSOCIATION IN ↗
- Who funds WOUNDED WARRIOR PROJECT INC ↗
- Who funds SEDONA PUBLIC LIBRARY INC ↗
- Who funds TABLE TO TABLE INC ↗
- Who funds HIBISCUS CHILDREN'S CENTER FOUNDATION INC ↗
- Who funds POMONA COLLEGE ↗
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 · 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 Sternbergh Foundation Ltd 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.
- Nantucket Maria Mitchell Association in — 9% of income from government
- Nantucket Dreamland Foundation Inc — 4% of income from government
- United Way of Martin County Inc — 4% of income from government
- Boys & Girls Club of Martin County — 2% of income from government
- Nantucket Historical Association — 1% of income from government
- Florida Oceanographic Society Inc — 0% of income from government
- Artists Association of Nantucket Inc — 0% of income from government
- Wounded Warrior Project 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.