· Private foundation
O'Donnell Iselin Foundation Inc
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 FY2017–2025.
Where the money goes
Your grants by size, and where they go.
By grant size · FY2025
- Under $10k23 grants · $62k
- $10k–50k10 grants · $135k
| Recipient | Amount |
|---|---|
| NEW YORK BOTANICAL GARDEN | $25,000 |
| ST TIMOTHY'S SCHOOL | $25,000 |
| WOODS HOLE OCEANOGRAPHIC INSTITUTE | $15,000 |
| THE MONTESSORI SCHOOL ENDOWMENT FUND | $10,000 |
| SPENCE CHAPIN | $10,000 |
| PLANNED PARENTHOOD OF SOUTHERN NEW ENGLAND | $10,000 |
| PLANNED PARENTHOOD OF GREATER NEW YORK | $10,000 |
| THE MONTESSORI SCHOOL | $10,000 |
| ST HILDA'S & ST HUGH'S SCHOOL | $10,000 |
| GREENWICH LAND TRUST INC | $10,000 |
| ASPCA | $5,000 |
| UNITED CHURCH OF ROWAYTON | $5,000 |
| REDDING LAND TRUST | $5,000 |
| NORTH COUNTRY SCHOOL SCHOLARSHIP | $5,000 |
| CONNECTICUT FOOD BANK | $5,000 |
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 (FY17–25, $103k) land where the poverty rate runs at 15%, against an area that typically sits at 12%. 78% 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.
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.
43 repeat relationships — 33 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
- NYNEW YORK BOTANICAL GARDEN9× · 2017–2025 · $220k · revenue +40%
- WHWOODS HOLE OCEANOGRAPHIC INSTITUTION9× · 2017–2025 · $175k · revenue +68%
- PPPLANNED PARENTHOOD OF GREATER NEW YORK INC9× · 2017–2025 · $130k · revenue +74%
Funded once
- WWWings World Quest Incgraduatedone grant, 2017 · $8k · revenue +313%
- FCFRIENDS COMMITTEE ON NATIONAL LEGISLATIONgraduatedone grant, 2017 · $2k · revenue +67%
ENVIRONMENTAL DEFENSE FUND INCORPORATEDgraduatedone grant, 2017 · $2k · revenue +202%
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 organization's mission is to conserve and promote new england's native plants to ensure healthy, biologically diverse landscapes.
Dutchess land conservancy (dlc) is dedicated to preserving the scenic, agricultural and environmental resources of dutchess county, new york, and the surrounding area. dlc, as a private non-profit land conservation organization, carries…
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…
Rainforest trust saves endangered wildlife and protects our planet by creating rainforest reserves through partnerships, community engagement, and donor support.
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."
To preserve the unique character and natural resources of harvard.
The adirondack council ensures the ecological integrity (clean water and air, wildlife habitat, etc.), wild character (solitude, scenic beauty, etc.), and vibrant communities of new york's six-million-acre adirondack park. the adirondack…
See schedule onylcv is a non-partisan policy making and political action organization that works to make environmental protection a top priority with elected officials, decision-makers and the voters by evaluating incumbent performance and…
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…
To cultivate and develop an expansive collection of trees, gardens, and plants for all to explore, enjoy and study; and to provide through education and stewardship, a greener, healthier, more beautiful environment.
The wildlands trust works throughout southeastern massachusetts to conserve and permanently protect native habitats, farmland, and lands of high ecologic and scenic value that serve to keep our communities healthy and our residents…
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.
For reference, the grantee most central to the portfolio’s shape is The Elephant Sanctuary in Tennessee and the most unlike its peers is Museum of the City of New York. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
For each theme you fund, this compares how the sector’s money is shifting with how your own giving is shifting.
Sector change and giving change are each shown relative to their own range, growing (right) or shrinking (left); both normalized, so inflation isn’t mistaken for growth.
Your grantees are a median of 54 years old; the field is 16. You back the established end — and your money leans older still.
The field is 22% 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 13% 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.
36 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. 36 of the 52 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 CORPORATION OF ST TIMOTHY'S SCHOOL ↗
- Who funds NEW YORK BOTANICAL GARDEN ↗
- Who funds WOODS HOLE OCEANOGRAPHIC INSTITUTION ↗
- Who funds PLANNED PARENTHOOD OF GREATER NEW YORK INC ↗
- Who funds THE GREENWICH LAND TRUST INC ↗
- Who funds SPENCE-CHAPIN SERVICES TO FAMILIES AND CHILDREN ↗
- Who funds PLANNED PARENTHOOD OF SOUTHERN NEW ENGLAND INC ↗
- Who funds Redding Land Trust Inc ↗
- Who funds THE AMERICAN SOCIETY FOR THE PREVENTION OF CRUELTY TO ANIMALS ↗
- Who funds CONNECTICUT FOODSHARE INC ↗
- Who funds PERSON TO PERSON INC ↗
- Who funds MEDECINS SANS FRONTIERES USA INC ↗
- Who funds THE ELEPHANT SANCTUARY IN TENNESSEE ↗
- Who funds AMERICARES FOUNDATION INC ↗
- Who funds ALL HANDS AND HEARTS SMART RESPONSE INC ↗
- Who funds KISMA PRESERVE ↗
- Who funds DOROTHY DAY HOSPITALITY HOUSE INC ↗
- Who funds Kieve Wavus Education Inc ↗
- Who funds MUSEUM OF THE CITY OF NEW YORK ↗
- Who funds SAVE THE SOUND ↗
- Who funds Haystack Mountain School of Crafts ↗
- Who funds AUDUBON CANYON RANCH INC ↗
- Who funds Wings World Quest Inc ↗
- Who funds ROWAYTON ARTS CENTER ↗
- Who funds WOODLAWN CONSERVANCY INC ↗
- Who funds FRIENDS OF BOLINAS STINSON BEACH LIBRARIES ↗
- Who funds COMMONWEAL ↗
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: Cleveland H Dodge Foundation Inc · Maine Community Foundation Inc · Marin Community Foundation · National Philanthropic Trust · The Goldman Sachs Charitable Gift Fund · Gs Donor Advised Philanthropy Fund for Wealth Management Inc · Morgan Stanley Global Impact Funding Trust Inc · American Endowment Foundation · Vanguard Charitable Endowment Program · Jpmorgan Chase Foundation · The Bank of America Charitable Foundation 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 O'Donnell Iselin Foundation Inc 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.
- Woods Hole Oceanographic Institution — 63% of income from government
- Lockwood-Mathews Mansion Museum of Norwalk Inc — 43% of income from government
- Save the Sound — 37% of income from government
- Planned Parenthood of Southern New England Inc — 10% of income from government
- Connecticut Foodshare Inc — 5% of income from government
- Person to Person Inc — 5% of income from government
- The Grammar School Inc — 4% of income from government
- Americares Foundation Inc — 0% of income from government
- Rowayton Arts Center — 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.