· Private foundation
Martin R Prince Charitable Foundation Inc
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.
Read this first · the figures below need context
58% of Martin R Prince Charitable Foundation Inc’s FY2025 grant dollars went to President And Fellows Of Harvard College, not to grantees.
Its money now reaches organizations through that sponsor, which does not report who recommended each grant. FY2025 names 22 organizations directly, so a portfolio cannot be read from it. Everything below is therefore FY2024, the last year Martin R Prince Charitable Foundation Inc named its own grantees at scale: 15 organizations, $1M. It is dated, not current.
Organizations named directly on the return
Amber years are those where most dollars went to a sponsor.
What you funded, over time
Every grant clustered by its grantee’s IRS cause code (NTEE), by year — across FY2017–2025.
Where the money goes
Your grants by size, and where they go.
By grant size · FY2024
- Under $10k8 grants · $23k
- $10k–50k7 grants · $111k
- $50k–250k4 grants · $455k
- $250k+1 grant · $415k
| Recipient | Amount |
|---|---|
| HARVARD MEDICAL SCHOOL | $415,000 |
| MASSACHUSETTS INSTITUTE OF TECHNOLOGY | $205,000 |
| EARTHJUSTICE | $100,000 |
| UNIVERSITY OF MICHIGAN | $100,000 |
| GREENPEACE FUND | $50,000 |
| SOCIETY OF MAGNETIC RESONANCE ANGIOGRAPHY | $31,000 |
| BRITISH SCHOOLS AND UNIVERSITIES FOUNDATION | $20,000 |
| THE CHAPIN SCHOOL | $15,000 |
| PLANNED PARENTHOOD FEDERATION OF AMERICA | $15,000 |
| THE OCEAN CONSERVANCY | $10,000 |
| POPULATION CONNECTION | $10,000 |
| UNITARIAN UNIVERSALIST ASSOCIATION | $10,000 |
| SIERRA CLUB | $5,000 |
| APPALACHIAN TRAIL CONSERVANCY | $5,000 |
| THE TRUST FOR PUBLIC LAND | $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 (FY18–18, $200) land where the poverty rate runs at 7%, against an area that typically sits at 8%. 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 +51% since the first grant, against +43% for the ones you funded once.
50 repeat relationships — 19 still active in FY2024, 31 since wound down; 2 grantees were first funded in FY2024 (too recent to call). Read against FY2024, the last year this funder named its own grantees directly; its giving has since run through a sponsor, which reports no donor behind each grant.
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; $13k 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
- UOUniversity of Michigan8× · 2017–2025 · $675k · revenue +202% · 42% of their budget
EARTHJUSTICE8× · 2017–2025 · $601k · revenue +82%
GREENPEACE FUND INC9× · 2017–2025 · $380k · revenue +31%
Funded once
- TPTHE PRESIDENT AND FELLOWS OF HARVARD UNIVERSITYone grant, 2021 · $200k
- RSRadiological Society of North America Incone grant, 2017 · $100k · revenue +25%
- FUFIRST UNITARIAN UNIVERSALIST CHURCH OF MARIETTAone grant, 2017 · $16k
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.
Ci works to spotlight and secure the critical benefits that nature provides to humanity.
Rainforest trust saves endangered wildlife and protects our planet by creating rainforest reserves through partnerships, community engagement, and donor support.
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.
The wildlife society's mission is to inspire, empower, and enable wildlife professionals to sustain wildlife populations and habitats through science-based management and conservation.
Nacwa is the national voice of public clean water utilities, shaping water policy, convening a vibrant peer network, and empowering water leaders.
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,…
To strenghten people's ability to guarantee their individual and collective right to a healthy environment, via the development, implementation, and effective enforcement of national and international law.
To engage and catalyze global seafood supply chains in rebuilding depleted fish stocks and reducing the environmental impacts of fishing and fish farming.
Wildaid's mission is to inspire change and empower the world to protect wildlife and vital habitats from critical threats.
The climate institute is organized for the purpose of educating the general public and policy makers as to the gravity of potential climate change, exploring the policy implications of the latest scientific findings on climate modelling…
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…
American gas association's (the association) mission is to develop and advocate for informed, innovative, and durable policy that fulfills our nation's energy needs, environmental aspirations and economic potential. we are committed to…
For reference, the grantee most central to the portfolio’s shape is Nrdc Action Fund Inc and the most unlike its peers is William Woodward Jr Nursery School Inc. 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 55 years old; the field is 17. You back the established end — and your money leans older still.
The field is 20% startups (under 5 years old) — 0% of your grantees by number, and just 0% of your money.
The orgs you fund almost never close — 2% lost their exemption, against 11% 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.
54 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. 54 of the 76 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 Massachusetts Institute of Technology ↗
- Who funds President and Fellows of Harvard College ↗
- Who funds University of Michigan ↗
- Who funds EARTHJUSTICE ↗
- Who funds GREENPEACE FUND INC ↗
- Who funds THE NATURE CONSERVANCY ↗
- Who funds INTERNATIONAL SOCIETY FOR MAGNETIC RESONANCE IN MEDICINE ↗
- Who funds PLANNED PARENTHOOD FEDERATION OF AMERICA INC ↗
- Who funds BRITISH SCHOOLS & UNIVERSITIES FOUNDATION INC ↗
- Who funds THE CHAPIN SCHOOL LTD ↗
- Who funds Radiological Society of North America Inc ↗
- Who funds NATURAL RESOURCES DEFENSE COUNCIL INC ↗
- Who funds INTERNATIONAL PLANNED PARENTHOOD FEDERATION WESTERN HEMISPHERE REGION ↗
- Who funds ENVIRONMENTAL DEFENSE FUND INCORPORATED ↗
- Who funds OCEAN CONSERVANCY ↗
- Who funds FRIENDS OF THE EARTH ↗
- Who funds MEDECINS SANS FRONTIERES USA INC ↗
- Who funds SOCIETY FOR MAGNETIC RESONANCE ANGIOGRAPHY C/O DR OLIVER WIEBEN ↗
- Who funds POPULATION CONNECTION ↗
- Who funds THE UNION OF CONCERNED SCIENTISTS INC ↗
- Who funds NRDC ACTION FUND INC ↗
- Who funds APPALACHIAN TRAIL CONSERVANCY ↗
- Who funds NATIONAL WILDLIFE FEDERATION ↗
- Who funds The Rogosin Institute Inc ↗
- Who funds LEAGUE OF CONSERVATION VOTERS INC ↗
- Who funds CENTRAL PARK CONSERVANCY INC ↗
- Who funds UNIVERSITY OF CALIFORNIA SAN FRANCISCO FOUNDATION ↗
- Who funds THE WILDERNESS SOCIETY ↗
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: Ge Aerospace Foundation · Vanguard Charitable Endowment Program · The Bank of America Charitable Foundation Inc · American Online Giving Foundation Inc · 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 Martin R Prince Charitable 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 or a single department — and drag the year to watch it move.
- Massachusetts Institute of Technology — 35% of income from government
- 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.
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Find your warmest path to Martin R Prince Charitable Foundation Inc 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.