· Private foundation
Island Foundation
Its FY2024 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 FY2017–2024.
Where the money goes
Your grants by size, and where they go.
By grant size · FY2024
- Under $10k10 grants · $10k
- $50k–250k1 grant · $139k
| Recipient | Amount |
|---|---|
| WILDLIFE CONSERVATION SOCIETY | $139,340 |
| BROOKS SCHOOL | $5,144 |
| GRIOT ARTS | $2,500 |
| LAKEVIEW CEMETERY | $1,000 |
| PACIFIC FOREST TRUST | $500 |
| Individual grant recipient | $250 |
| PROPUBLIC | $250 |
| HARVARD UNIVERSITY | $250 |
| WIKIMEDIA FOUNDATION | $250 |
| THE WILDLIFE SOCIETY | $96 |
| AMNH | $24 |
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 (FY17–24) land where the poverty rate runs at 24%, against an area that typically sits at 10%. 96% 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 +73% since the first grant, against +10% for the ones you funded once.
13 repeat relationships — 5 still active in FY2024, 8 since wound down; 5 grantees were first funded in FY2024 (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 FY2024, 98% of grant dollars renewed an existing relationship; $3k 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
- WCWildlife Conservation Society8× · 2017–2024 · $1.1M · revenue +59%
DUKE UNIVERSITY2× · 2019–2021 · $127k · revenue +44%- TPThe Pacific Forest Trust Incorporated6× · 2017–2024 · $30k · revenue +293%
Funded once
- DDDUKE DRONE AND REMOTE SENSING LABone grant, 2018 · $21k
- UOUNIVERSTIY OF SOUTHERN CALIFORNIAone grant, 2019 · $20k
- UOUNIVERSITY OF SOURTHERN CALIFORNIAone grant, 2021 · $20k
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.
Wri is committed to creating change that improves people's lives and ensures the natural world can thrive. (see schedule o)wri's bold vision requires a formula for success we call "count it. change it. scale it.":- count it: our work is…
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.
The bac is committed to provide excellence in design education grounded in practice and accessible to diverse communities.
To establish and promote programs to protect the global climate, forests, wildlife and the natural environment, through research, advocacy, and investigation.
Research, education and general - princeton university is a private not-for-profit, non-sectarian institution of higher learning with approximately 5,700 undergraduate and 3,300 graduate students. 2,500 students graduated in the 2024-2025…
Advance science, engineering, and innovation throughout the world for the benefit of all. the world's largest multidisciplinary scientific society and a leading publisher of cutting-edge research through its science family of journals,…
Wwf's mission is to conserve nature and reduce the most pressing threats to the diversity of life on earth. (continued on schedule o)
The purpose of rainforest foundation us is to support indigenous peoples and forest communities in their efforts to secure their lands, protect their environment, and uphold their rights.
Ci works to spotlight and secure the critical benefits that nature provides to humanity.
The union of concerned scientists puts rigorous, independent science into action, developing solutions and advocating for a healthy, safe, and just future.
The organization's mission is to conserve and promote new england's native plants to ensure healthy, biologically diverse landscapes.
Help improve policy and decision making through research and analysis.
For reference, the grantee most central to the portfolio’s shape is Mongabay Org Corp and the most unlike its peers is Kew Foundation America. 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 33 years old; the field is 18. You back the established end — and your money leans older still.
The field is 19% 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.
30 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. 30 of the 49 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 Wildlife Conservation Society ↗
- Who funds DUKE UNIVERSITY ↗
- Who funds The Pacific Forest Trust Incorporated ↗
- Who funds President and Fellows of Harvard College ↗
- Who funds MONGABAY ORG CORP ↗
- Who funds UNIVERSITY OF SOUTHERN CALIFORNIA ↗
- Who funds THE VOTER PARTICIPATION CENTER ↗
- Who funds RAINFOREST TRUST ↗
- Who funds BROOKS SCHOOL ↗
- Who funds WILDLIFE PROTECTION SOLUTIONS ↗
- Who funds RESOURCES LEGACY FUND ↗
- Who funds THE TURTLE SURVIVAL ALLIANCE FOUNDATION ↗
- Who funds REWILD ↗
- Who funds ISLAND CONSERVATION ↗
- Who funds RARE ↗
- Who funds BUCKLEY COUNTRY DAY SCHOOL ↗
- Who funds GRIOT ARTS INC ↗
- Who funds HAWKEN SCHOOL ↗
- Who funds WILDAID INC ↗
- Who funds TROUT UNLIMITED INC ↗
- Who funds WIKIMEDIA FOUNDATION INC ↗
- Who funds COMMUNITY INITIATIVES ↗
- Who funds THE ANDREW GOODMAN FOUNDATION INC ↗
- Who funds INTERNATIONAL DOCUMENTARY FOUNDATION INC ↗
- Who funds Kew Foundation America ↗
- Who funds THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY ↗
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 David and Lucile Packard Foundation · Silicon Valley Community Foundation · National Philanthropic Trust · Vanguard Charitable Endowment Program · The Pfizer Foundation Inc · American Endowment Foundation · Donor Advised Charitable Giving Inc · The Bank of America Charitable Foundation 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 Island 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 or a single department — and drag the year to watch it move.
- President and Fellows of Harvard College — 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 Island Foundation?
Find your warmest path to Island 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.