The Margot Marsh Biodiversity Foundation
Invitation OnlyNew York, New York · EIN 33-0683174 · Private foundation · Website
Half of its grants to organizations were between $15,000 and $25,000.
How to apply
On its return for tax year 2025 the foundation checked the box saying it only makes contributions to preselected charitable organizations and does not accept unsolicited requests for funds.
What it funds
Share of grant lines on the latest return, classified from the purpose each grant states.
Where it gives
93% of grants went outside New York.
Grants paid in tax year 2025
| Recipient | Location | Purpose | Amount |
|---|---|---|---|
| Rewild | Austin, TX | 2025 primate action fund | $150,000 |
| Friends of Bonobos | Durham, NC | Third reintroduction of bonobos, pan paniscus, at ekolo ya bonobo community reserve, drc | $25,000 |
| Gorilla Rehabilitation and Conservation Education | Niwot, CO | Usala conservation corridor to protect grauer's gorillas (gorilla beringei graueri), north kivu, dr congo | $25,000 |
| Rewild | Austin, TX | List of the world's 25 most endangered primates a meeting at the xxx congress of the international primatological society, antananarivo… | $25,000 |
| Rewild | Austin, TX | The use of drones to improve forest surveillance, monitoring and the conservation of cercopithecus roloway and colobus vellerosus; two… | $25,000 |
| Cloud Forest Fund | Manhasset Hill, NY | Saving the critical habitat of the world's rarest monkey: the tonkin snub-nosed monkey habitat in khau ca forest, vietnam | $25,000 |
| Fauna & Flora International | Washington, DC | Community-Based conservation of the myanmar snub-nosed monkey (rhinopithecus strykeri), myanmar phase IV | $20,000 |
| Lincoln Park Zoo | Chicago, IL | Conservation of western lowland gorillas (gorilla gorilla gorilla) and central chimpanzees (pan troglodytes troglodytes) in the congo basin | $20,000 |
| Wild Earth Allies | Chevy Chase, MD | Conservation of the blue monkey (cercopithecus mitis) on idjwi island, democratic republic of the congo | $20,000 |
| Bonobo Conservation Initiative | Washington, DC | Protecting endangered bonobos (pan paniscus) and a critical biodiversity corridor in the congo rainforest (lilungu, tshuapa province,… | $20,000 |
| Gorilla Rehabilitation and Conservation Education | Niwot, CO | Usala conservation corridor to protect grauer's gorillas (gorilla beringei graueri), north kivu, drc | $20,000 |
| Ohio State University | Broxbourne, UK | Community-Led conservation of the critically endangered roloway monkey and endangered white-naped mangabey through sustainable nature-based… | $15,700 |
| University of Illinois Urbana Champaign | Urbana, IL | Monitoring ontogenetic changes in wild chimpanzee (pan troglodytes) gut microbiota at kibale national park, uganda | $15,000 |
| Rewild | Austin, TX | Support for the publication of the iucn ssc primate specialist group journal primate conservation: printing of issue 39 (2025) | $12,000 |
| New Nature Foundation | Philadelphia, PA | Safeguarding habitat for endangered ashy red colobus and other species in western uganda through expansion of biomass briquette production | $11,200 |
| The Kasiisi Project | Grand Ledge, MI | Expanding school and community handwashing campaigns to reduce human-to-chimpanzee (pan troglodytes schweinfurthii) respiratory infections… | $10,000 |
The return also lists 1 grant to individuals ($10,000). We do not publish the names of individual recipients.
Giving by year
| Tax year | Grants paid | Grant lines |
|---|---|---|
| 2025 | $448,900 | 17 |
| 2024 | $503,700 | 19 |
| 2023 | $444,600 | 19 |
Sources
- IRS Form 990-PF, tax year 2025, filed May 1, 2026 - IRS e-file batch, object ID 202641219349102304
- IRS Tax Exempt Organization Search for EIN 33-0683174
- Profile updated Nov 5, 2026
Facts on this page come from the foundation's own IRS Form 990-PF filings as published by the IRS. Grantvello does not know whether a foundation is accepting proposals right now: a past grant is not an open opportunity. Always confirm current guidelines with the funder before applying.