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The Margot Marsh Biodiversity Foundation at a glance

· Private foundation

The Margot Marsh Biodiversity 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.

$449k
Granted FY2025still arriving
17
Grants FY2025still arriving
9
States reached
$150k
Largest
01What it fundsRead
02The needRead
03Its granteesRead
04Its fieldRead
05Through PlinthRead
01What it funds
01100% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2025.

Animals$2.8MEnvironment$1.7MEducation$146kArts & Culture$30kReligion$25kHealth$20k
02FY2025 · 17 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2025

  • $10k–50k16 grants · $299k
  • $50k–250k1 grant · $150k
$20,000
Median grant
9
States reached
$1.7M
Total assets
Largest grants
RecipientAmount
REWILD$150,000
GORILLA REHABILITATION AND CONSERVATION EDUCATION$25,000
REWILD$25,000
FRIENDS OF BONOBOS$25,000
REWILD$25,000
CLOUD FOREST FUND$25,000
FAUNA & FLORA INTERNATIONAL$20,000
GORILLA REHABILITATION AND CONSERVATION EDUCATION$20,000
WILD EARTH ALLIES$20,000
LINCOLN PARK ZOO$20,000
BONOBO CONSERVATION INITIATIVE$20,000
OHIO STATE UNIVERSITY$15,700
UNIVERSITY OF ILLINOIS URBANA CHAMPAIGN$15,000
REWILD$12,000
NEW NATURE FOUNDATION$11,200
02The need
03

Does the money reach high-need areas?

Each grant placed by the hardship in its grantee’s ZIP, against the area’s typical level.

show:

Dollar for dollar, its grants (FY17–25) land where the poverty rate runs at 13%, against an area that typically sits at 11%. 64% of its dollars go to grantees based in above-average-need neighborhoods. Most of its grants land in higher-need ZIPs.

area typical 11%CONSERVATION FUSION INC: $20k → 6%OMAHA ZOOLOGICAL SOCIETY: $20k → 12%CLOUD FOREST FUND: $25k → 6%RESEARCH FOUNDATION FOR SUNY-BUFFALO STATE: $20k → 13%GLOBAL WILDLIFE CONSERVATION: $135k → 10%INTERNATIONAL PRIMATOLOGICAL SOCIETY: $20k → 12%HOUSTON ZOO: $25k → 16%FAUNA & FLORA INTERNATIONAL: $20k → 14%DEPARTMENT OF BIOMEDICAL SCIENCES GRAND VALLEY STATE UNIVERSITY: $20k → 8%DIAN FOSSEY GORILLA FUND: $20k → 13%UNIVERSITY OF GEORGIA: $20k → 27%GORILLA REHABILITATION AND CONSERVATION EDUCATION: $30k → 12%CINCINNATI ZOO AND BOTANICAL GARDENS: $25k → 16%LINCOLN PARK ZOOLOGICAL SOCIETY: $25k → 14%PRINCETON UNIVERSITY: $20k → 11%CONSERVATION INTERNATIONAL: $20k → 7%SAVE THE GOLDEN LION TAMARIN: $25k → 8%CONSERVATION FUSION INC: $20k → 6%OMAHA ZOOLOGICAL SOCIETY: $20k → 12%WILDLIFE CONSERVATION SOCIETY: $20k → 28%GLOBAL WILDLIFE CONSERVATION: $135k → 10%GORILLA REHABILITATION AND CONSERVATION EDUCATION: $28k → 12%CINCINNATI ZOO & BOTANICAL GARDEN: $25k → 16%LINCOLN PARK ZOO: $25k → 14%WILD EARTH ALLIES: $25k → 8%CONSERVATION FUSION INC: $20k → 6%OMAHA ZOOLOGICAL SOCIETY: $20k → 12%NEW NATURE FOUNDATION: $25k → 22%GLOBAL WILDLIFE CONSERVATION: $25k → 10%GORILLA REHABILITATION AND CONSERVATION EDUCATION: $25k → 12%CINCINNATI ZOO AND BOTANICAL GARDENS: $25k → 16%LINCOLN PARK ZOO: $25k → 14%WILD EARTH ALLIES: $25k → 8%GLOBAL WILDLIFE CONSERVATION: $25k → 10%GORILLA REHABILITATION AND CONSERVATION EDUCATION: $25k → 12%WILD EARTH ALLIES: $25k → 8%REWILD: $25k → 10%GLOBAL WILDLIFE CONSERVATION: $135k → 14%GORILLA REHABILITATION AND CONSERVATION EDUCATION: $25k → 12%GLOBAL WILDLIFE CONSERVATION: $25k → 10%GLOBAL WILDLIFE CONSERVATION: $135k → 14%GRACE: $25k → 12%GLOBAL WILDLIFE CONSERVATION: $24k → 10%GLOBAL WILDLIFE CONSERVATION: $25k → 14%GRACE: $25k → 12%GLOBAL WILDLIFE CONSERVATION: $25k → 14%GLOBAL WILDLIFE CONSERVATION: $25k → 14%GLOBAL WILDLIFE CONSERVATION: $24k → 14%0%20%40%50%more need →
grant to an above-average-need area below average· circle size = grant amount
How this is measured
Matched: human-services grants are those whose grantee’s IRS cause code is Human Services. Placed by people below the poverty line in the grantee’s ZIP, averaged from the tracts in that ZIP.

Which US states its grants reach

ME
WA
MN
IL
WI
MI
NY
MA
OR
OH
PA
NJ
CA
CO
NE
KY
VA
MD
NC
DC
GA
TX
FL
How this is measured
US grants placed by each grantee’s ZIP, which can differ from where services are delivered. Need from public data (U.S. Census/ACS, CDC PLACES, Eviction Lab, USDA), shown as context about the area, never attributed to the funder’s giving.
04

Where the work is directed

The same grants placed two ways: where each recipient sits, and where its stated purpose sends the money.

About 37% of The Margot Marsh Biodiversity Foundation’s grant dollars are earmarked for a different county than the recipient’s own address. By recipient address, 6% of the giving stays in NY; by stated purpose, 1%.

The Margot Marsh Biodiversity Foundationlessmore of its giving
Placed by recipient address · 50% directed abroad (not shown)
How this is measured
Recipient view: each grant at its grantee’s ZIP, mapped to a county. Directed view: each grant at the county its stated purpose names, falling back to the recipient’s county when the purpose names no place; US grants only. A county shows only if it carries the top 95% of that view’s dollars. Purposes are read from the funder’s own 990 grant descriptions.
03Its grantees
repeat funding

Who it funds again

Organizations funded in more than one year, against those funded once.

87%of every dollar goes to organizations it has funded before.
$4.1M · 28 repeat orgs$628k to everyone else

Grantees it renews have grown median revenue +39% since the first grant, against +8% for those funded once.

28 repeat relationships: 9 still active in FY2025, 19 since wound down; 4 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

28
39

Total granted

$4.1M
$562k

Median revenue growth · since first grant

+39%
+8%

Still filing today

71%
44%

New vs renewed · share of each year

In FY2025, 85% of grant dollars renewed an existing relationship; $66k went to new ones.

50%100%’17’18’19’20’21’22’23’24’25
RenewedFirst-time

Where new relationships form · theme of each grantee’s first grant

’17’18’19’20’21’22’23’24’25
AnimalsEnvironmentEducationScience & TechPhilanthropyOther
How this is measured
First-time means a grantee’s first year in the filing window; renewed means funded in an earlier year too. The renewed share climbs naturally as a portfolio matures, so the signal is a year that bucks it (a wave of new grantees). 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

  • REWILD
    9× · 2017–2025 · $1.6M · revenue +550%
  • GR
    GORILLA REHABILITATION CONSERVATION EDUCATION (GRACE) CENTER INC
    5× · 2021–2025 · $193k · revenue +21%
  • WE
    Wild Earth Allies Inc
    9× · 2017–2025 · $185k · revenue +129%

Funded once

  • ST
    SAVE THE GOLDEN LION TAMARIN
    one grant, 2020 · $25k · revenue -16%
  • G
    GRACE
    one grant, 2024 · $25k
  • G
    GRACE
    one grant, 2021 · $25k
How this is measured

Repeat means funded in two or more distinct years. Growth and survival are read from each grantee’s own subsequent IRS filings.

04Its field

Closest unfunded matches

The nonprofits that most resemble its grantees but are not funded by it, scored along the direction from the rest of the field toward the portfolio. A resemblance in what they say they do, not a recommendation.

1
World Wildlife Fund Inc

Wwf's mission is to conserve nature and reduce the most pressing threats to the diversity of life on earth. (continued on schedule o)

Environment
2
Rainforest Trust

Rainforest trust saves endangered wildlife and protects our planet by creating rainforest reserves through partnerships, community engagement, and donor support.

International
3
African Wildlife Foundation Inc

Awf's mission is to ensure wildlife and wild lands thrive in modern africa. we work to equip african governments, institutions, business, and communities with the tools, insights, and support they need to define, own, and realize a…

Animals
4
Panthera Corporation

Panthera's mission is the conservation of the world's 40 wild cat species, many of which are endangered or threatened. panthera develops, implements and oversees wild cat conservation strategies on a global scale.

Animals
5
International Primate Protection League

Protecting the world's remaining primates by monitoring and exposing illegal trade, supporting a worldwide network of overseas sanctuaries and ngo's, publicising the plight of abused primates, and operating a sanctuary for resued gibbons.

Animals
6
Wildlife Impact

Protect wildlife and ecosystems through research, evidence-based evaluation, capacity development and advocacy.

Animals
7
Endangered Species International

Endangered Species International is strongly committed to reversing the trend of human-induced species extinction, saving endangered animals, and preserving wild places.

Animals
8
Dazzle Africa

Dazzle africa's mission is to partner with local organizations to provide programs in conservation, education and community development. the organization aims to ensure that future generations are self-sufficient and iconic african…

Animals
9
Natura International Inc

Natura International conserves rainforests and other key natural ecosystems and the endangered species they contain through creation of protected areas in collaboration with local governments and communities in Latin America. In this way…

Public Benefit
10
Rainforest Foundation Inc

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.

Environment
11
Fundacion Cordillera Tropical

Conservation of natural resources

International
12
Zambia Carnivore Programme

To safeguard large carnivores, their prey, and habitat in zambia through applied research, conservation, and education.

Animals
How this is measured
The grantee most central to the portfolio’s shape is Jane Goodall Institute for Wildlife Research Education and Conservation; the most unlike its peers is Drexel University. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
05the grantee network

38 grantees tracked through their own filings, 2017–2025.

Each grant beside the grantee’s revenue from every source, year by year.

How this is measured

Counted here: distinct organizations funded across 2017 to 2025, not grant rows in a single year, so this will not match the grant count on the cover. 38 of the 72 grantees resolved in that span have returns of their own we could reconcile.

Each grantee is resolved to its own IRS returns. Association, dated; never a causal claim.

0
Load-bearing (≥25% of a budget)
5
Early backer (in before they grew)
38/38
Grantees still filing
28/38
Grew since first funded

Where the money sits, by cause and then by grantee

REWILD: $1,633,200 · AnimalsREWILDGORILLA REHABILITATION CONSERVATION EDUCATION (GRACE) CENTER INC: $193,000 · AnimalsGORILLA REHABILITATION CONSERVATION EDUCATION (GRACE) CENTER INCFRIENDS OF BONOBOS: $142,000 · AnimalsFRIENDS OF BONOBOSLINCOLN PARK ZOOLOGICAL SOCIETY: $135,000 · AnimalsWildlife Conservation Society: $129,500 · AnimalsBONOBO CONSERVATION INITIATIVE: $90,000 · Animals+12 more: $333,000 · Animals+12 moreGLOBAL WILDLIFE CONSERVATION: $436,000 · OtherGLOBAL WILDLIFE CONSERVATIONINTERNATIONAL PRIMATOLOGICAL SOCIETY: $85,000 · OtherINTERNATIONAL PRIMATOLOGICAL S…UNIVERSITY OF GEORGIA: $45,000 · OtherWESTERN WASHINGTON UNIVERSITY: $45,000 · Other+34 more: $641,675 · Other+34 moreWild Earth Allies Inc: $185,000 · EnvironmentWild Earth …CONSERVATION INTERNATIONAL FOUNDATION: $106,600 · EnvironmentCONSERVATIO…THE NEW NATURE FOUNDATION: $86,200 · EnvironmentTHE NEW NAT…CONSERVATION FUSION INC: $80,000 · EnvironmentCONSERVATIO…+3 more: $37,000 · Environment+3 moreFAUNA & FLORA INTERNATIONAL USA INC: $151,000 · PhilanthropyKASIISI PROJECT INC: $39,500 · EducationDUKE UNIVERSITY: $25,824 · EducationThe Trustees of Princeton University: $20,000 · EducationDREXEL UNIVERSITY: $15,000 · EducationFordham University: $15,000 · EducationCornell University: $11,000 · EducationTHE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK: $10,000 · EducationLEMUR LOVE INC: $10,000 · Science & Tech
Animals$2,655,700Other$1,252,675Environment$494,800Philanthropy$151,000Education$136,324Science & Tech$10,000

Each grantee by its size and the funder’s share of it; top left is load-bearing

25%50%75%100%$100k$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetREWILD: $1,633,200 over 9y, 1.5% of budgetGORILLA REHABILITATION CONSERVATION EDUCATION (GRACE) CENTER INC: $193,000 over 5y, 3.1% of budgetWild Earth Allies Inc: $185,000 over 9y, 0.7% of budgetFAUNA & FLORA INTERNATIONAL USA INC: $151,000 over 6y, 2.9% of budgetFRIENDS OF BONOBOS: $142,000 over 7y, 2.2% of budgetLINCOLN PARK ZOOLOGICAL SOCIETY: $135,000 over 6y, 0.1% of budgetWildlife Conservation Society: $129,500 over 3y, 0.0% of budgetCONSERVATION INTERNATIONAL FOUNDATION: $106,600 over 4y, 0.0% of budgetBONOBO CONSERVATION INITIATIVE: $90,000 over 5y, 6.0% of budgetTHE NEW NATURE FOUNDATION: $86,200 over 5y, 11% of budgetINTERNATIONAL PRIMATOLOGICAL SOCIETY: $85,000 over 4y, 20% of budgetCONSERVATION FUSION INC: $80,000 over 4y, 17% of budgetOMAHA ZOOLOGICAL SOCIETY: $80,000 over 3y, 0.1% of budgetZOOLOGICAL SOCIETY OF CINCINNATI: $75,000 over 3y, 0.0% of budgetDian Fossey Gorilla Fund International Inc: $41,475 over 3y, 0.2% of budgetSEACOLOGY: $40,500 over 4y, 0.5% of budgetHouston Zoo Inc: $40,000 over 2y, 0.0% of budgetKASIISI PROJECT INC: $39,500 over 3y, 2.3% of budgetDUKE UNIVERSITY: $25,824 over 2y, 0.0% of budgetSAVE THE GOLDEN LION TAMARIN: $25,000 over 1y, 13% of budgetDENVER ZOOLOGICAL FOUNDATION: $25,000 over 2y, 0.0% of budgetThe Trustees of Princeton University: $20,000 over 1y, 0.0% of budgetJANE GOODALL INSTITUTE FOR WILDLIFE RESEARCH EDUCATION AND CONSERVATION: $18,000 over 1y, 0.1% of budgetMGVP INC Mountain Gorilla Veterinary Project: $15,000 over 1y, 0.9% of budgetDREXEL UNIVERSITY: $15,000 over 1y, 0.0% of budgetFordham University: $15,000 over 1y, 0.0% of budgetORANGUTAN OUTREACH INC ATTN RICHARD ZIMMERMAN: $15,000 over 1y, 3.7% of budgetRAINFOREST PARTNERSHIP: $12,000 over 1y, 4.0% of budgetCornell University: $11,000 over 1y, 0.0% of budgetWILDLIFE ALLIANCE INC: $10,000 over 1y, 0.1% of budgetTHE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK: $10,000 over 1y, 0.0% of budgetPAN AFRICAN SANCTUARY ALLIANCE INC: $10,000 over 1y, 0.6% of budgetENVIRONMENTAL EDUCATION & CONSERVATION GLOBAL INC: $10,000 over 1y, 19% of budgetCHILDREN OF CONSERVATION INC: $10,000 over 1y, 6.0% of budgetTRUSTEES OF BOSTON UNIVERSITY: $10,000 over 1y, 0.0% of budget
Grantee by grantee: a decade per organization, before and after funding

A decade per grantee: revenue shaded, grants as bars, all rows on one timeline.

  • Who funds REWILD ↗
  • Who funds GORILLA REHABILITATION CONSERVATION EDUCATION (GRACE) CENTER INC ↗
  • Who funds Wild Earth Allies Inc ↗
  • Who funds FAUNA & FLORA INTERNATIONAL USA INC ↗
  • Who funds FRIENDS OF BONOBOS ↗
  • Who funds LINCOLN PARK ZOOLOGICAL SOCIETY ↗
  • Who funds Wildlife Conservation Society ↗
  • Who funds CONSERVATION INTERNATIONAL FOUNDATION ↗
  • Who funds BONOBO CONSERVATION INITIATIVE ↗
  • Who funds THE NEW NATURE FOUNDATION ↗
  • Who funds INTERNATIONAL PRIMATOLOGICAL SOCIETY ↗
  • Who funds CONSERVATION FUSION INC ↗
  • Who funds OMAHA ZOOLOGICAL SOCIETY ↗
  • Who funds ZOOLOGICAL SOCIETY OF CINCINNATI ↗
  • Who funds Dian Fossey Gorilla Fund International Inc ↗
  • Who funds SEACOLOGY ↗
  • Who funds Houston Zoo Inc ↗
  • Who funds KASIISI PROJECT INC ↗
  • Who funds DUKE UNIVERSITY ↗
  • Who funds SAVE THE GOLDEN LION TAMARIN ↗
  • Who funds DENVER ZOOLOGICAL FOUNDATION ↗
  • Who funds The Trustees of Princeton University ↗
  • Who funds JANE GOODALL INSTITUTE FOR WILDLIFE RESEARCH EDUCATION AND CONSERVATION ↗

Co-funders

Grantmakers whose grantees overlap with this funder’s far more than size alone predicts. Closer means stronger alignment; arcs show where they also fund each other. Here they form a tightly interlocked group: most of these funders back each other's grantees too.

Columbus Zoological P…Arcus FoundationSeaworld & Busch Gard…National Geographic S…Globalgiving Foundati…AbbVie FoundationVanguard Charitable E…Morgan Stanley Global…Donor Advised Charita…Network for GoodAmerican Online Givin…The Bank of America C…
Columbus Zoological Park AssociationOH20× affinity7 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Columbus Zoological Park Association · Arcus Foundation · Seaworld & Busch Gardens Conservation Fund · National Geographic Society · Globalgiving Foundation Inc · AbbVie Foundation · Vanguard Charitable Endowment Program · Morgan Stanley Global Impact Funding Trust Inc · Donor Advised Charitable Giving Inc · Network for Good · American Online Giving Foundation Inc · The Bank of America Charitable Foundation Inc

How this is measured
Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. Overlap is association, not proof of shared intent.

How much its grantees rely on government

Each dot is one organization The Margot Marsh Biodiversity Foundation funds: left to right is the share of its income from government, bottom to top the share from The Margot Marsh Biodiversity Foundation. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 30%1%5%11%20%funder's share of their income ↑0%19%38%56%75%share of the org’s income from government →median 12%
  • Pan African Sanctuary Alliance Inc: 68% of income from government
  • Trustees of Boston University: 12% of income from government
  • The Trustees of Princeton University: 11% of income from government
no gov moneyreceives it· size = income
3get no government money at all
5report government grants on their 990 we could not trace to a source (not plotted)
1rely on government for over half their income
⤢ axis zoomed · 0–75%
typical government reliance, FY20–25
How this is measured
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 a grant caused the public funding. Coverage is precision-first, a floor rather than 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 to 24 months.
05Through Plinth

Warm introductions · Powered by PlinthPlus

How do I get to The Margot Marsh Biodiversity Foundation?

Find your warmest path to The Margot Marsh Biodiversity 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.

On method. Every financial figure here is read from IRS e-file XML, the funder’s own 990/990-PF, and from the multi-year returns of the 72 grantees we resolved, each linked to its source. Grantee outcomes are each organization’s own program-service reporting (Form 990, Part III), read as association with funding, never as caused by it. Low-confidence name matches are suppressed rather than guessed. How we build these →

How this is measured
Each figure carries one of six labels. Filed is what the funder reported on its return. Official is another government record about an organization, such as a federal award or a charity register, joined by name where no shared identifier exists. Resolved is an identity we worked out where the filing named a recipient without an EIN, kept only above a measured confidence threshold. Computed is arithmetic over those, like themes, portfolio clusters and co-funder strength. Context is a statistic about a place rather than about an organization, which is what the need overlay is: it describes the area a grantee’s address sits in, not where its work lands. Inferred is drawn by a model from text, like the partnerships read out of public news and organization websites. Each is labeled where it appears.

Generated from the IRS Form 990-PF e-file return for fiscal year 2025, released 2025. Filings run roughly 12 to 24 months behind; figures are dated accordingly.

Source object · view filing

Play a game based on Margot Marsh Biodiversity’s filings →

More from the funding graph

The unnamed billions
grants reported with no recipient in the public record
The regranting layer
51% of grant dollars land in the regranting layer
The DAF merry-go-round
$9.7B circulates between donor-advised funds
The endowment market
who holds foundation money, and what just moved
The camps
funders cluster by geography, not ideology
By state
where grant money is based, and what stays home