Funding search · EIN 136171217 · New York, NY
Mostyn Foundation
A private foundation (files IRS Form 990-PF). Most private foundations do not take unsolicited applications; the route in is usually a program officer.
- 170
- grants reported
- $1.9M
- total given
- 2022–2025
- filing years
- $7,250
- median grant
Based on grants this organization reported to the IRS for tax years 2022–2025. This is what they filed, not a complete record of their giving, and recent years may be incomplete because filings lag.
What they fund
Full IRS filings ↗How this is builtReport an error
Funding pattern
What this funder pays for, at what size, and how to position adjacent work. Read from their filings, with every number checked against the record.
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Top recipients
Repeat recipients are the strongest signal of whether a funder has an open door or quietly re-funds the same organizations.
- Wild Oceans5 grants · $450,000
- Free Arts of Nyc5 grants · $186,000
- Int'L Gamefish Association5 grants · $140,000
- Diabetes Research Institute5 grants · $125,000
- Bonefish & Tarpon Trust5 grants · $97,000
- Islesboro Affordable Property5 grants · $57,000
- Heartstrong Horsemanship2 grants · $55,000
- Bermuda Institute of Ocean5 grants · $50,000
- Miami Project To Cure Paralysis5 grants · $50,000
- Lucy Burns Institute5 grants · $50,000
Giving over time
Grant history
The 100 largest of 170 grants.
- $105,000
Wild Oceans · Waterford, VA · 2023
Marine conservation
- $90,000
Wild Oceans · Waterford, VA · 2022
Marine conservation
- $85,000
Wild Oceans · Waterford, VA · 2025
Marine conservation
- $85,000
Wild Oceans · Waterford, VA · 2024
Marine conservation
- $85,000
Wild Oceans · Waterford, VA · 2024
Marine conservation
- $50,000
Free Arts of Nyc · New York, NY · 2022
General
- $46,000
Free Arts of Nyc · New York, NY · 2025
General
- $40,000
Free Arts of Nyc · New York, NY · 2024
General
- $40,000
Free Arts of Nyc · New York, NY · 2024
General
- $40,000
Heartstrong Horsemanship · Oologah, OK · 2023
General
- $30,000
Int'L Gamefish Association · Dania Beach, FL · 2025
General
- $30,000
Int'L Gamefish Association · Dania Beach, FL · 2024
General
- $30,000
Int'L Gamefish Association · Dania Beach, FL · 2024
General
- $28,000
Guy Harvey Foundation · Fort Lauderdale, FL · 2025
General support
- $25,000
Diabetes Research Institute · Hollywood, FL · 2025
General
- $25,000
Bonefish & Tarpon Trust · Key Largo, FL · 2024
General
- $25,000
Bonefish & Tarpon Trust · Key Largo, FL · 2024
General
- $25,000
Diabetes Research Institute · Hollywood, FL · 2024
General
- $25,000
Diabetes Research Institute · Hollywood, FL · 2024
General
- $25,000
Diabetes Research Institute · Hollywood, FL · 2023
General
- $25,000
Int'L Gamefish Association · Dania Beach, FL · 2023
General
- $25,000
Diabetes Research Institute · Hollywood, FL · 2022
General
- $25,000
Int'L Gamefish Association · Dania Beach, FL · 2022
General
- $25,000
Islesboro Affordable Property · Rockland, ME · 2022
General
- $17,000
Bonefish & Tarpon Trust · Key Largo, FL · 2025
General
- $15,000
Earth Allies Restoration Network · Carbondale, CO · 2024
General
- $15,000
Earth Allies Restoration Network · Carbondale, CO · 2024
General
- $15,000
Miami Project To Cure Paralysis · Miami, FL · 2024
General
- $15,000
Miami Project To Cure Paralysis · Miami, FL · 2024
General
- $15,000
Bonefish & Tarpon Trust · Key Largo, FL · 2023
General
- $15,000
Bonefish & Tarpon Trust · Key Largo, FL · 2022
General
- $15,000
Heartstrong Horsemanship · Oologah, OK · 2022
General
- $12,500
Food On the Stove · Washington, DC · 2022
General
- $10,000
Alliance for Safety & Justice · Oakland, CA · 2025
General
- $10,000
Bermuda Institute of Ocean · New York, NY · 2025
General
- $10,000
Committee To Project Journalists · New York, NY · 2025
General
- $10,000
Earth Allies Restoration Network · Carbondale, CO · 2025
General
- $10,000
Lucy Burns Institute · Madison, WI · 2025
General
- $10,000
Miami Project To Cure Paralysis · Miami, FL · 2025
General
- $10,000
Nat'L Assoc of Children Addictions · Kensington, MD · 2025
General
- $10,000
Pro Publica · New York, NY · 2025
General
- $10,000
Rural Advancement Foundation Int'L · Pittsboro, NC · 2025
General
- $10,000
Alliance for Safety & Justice · Oakland, CA · 2024
General
- $10,000
Alliance for Safety & Justice · Oakland, CA · 2024
General
- $10,000
Bermuda Institute of Ocean · New York, NY · 2024
General
- $10,000
Bermuda Institute of Ocean · New York, NY · 2024
General
- $10,000
Committee To Project Journalists · New York, NY · 2024
General
- $10,000
Committee To Project Journalists · New York, NY · 2024
General
- $10,000
Costal Conservation Association · Orlando, FL · 2024
General
- $10,000
Costal Conservation Association · Orlando, FL · 2024
General
- $10,000
Islesboro Affordable Property · Rockland, ME · 2024
General
- $10,000
Islesboro Affordable Property · Rockland, ME · 2024
General
- $10,000
Lucy Burns Institute · Madison, WI · 2024
General
- $10,000
Lucy Burns Institute · Madison, WI · 2024
General
- $10,000
Nat'L Assoc of Children Addictions · Kensington, MD · 2024
General
- $10,000
Nat'L Assoc of Children Addictions · Kensington, MD · 2024
General
- $10,000
Power of 10 Initiative · Washington, DC · 2024
General
- $10,000
Power of 10 Initiative · Washington, DC · 2024
General
- $10,000
Pro Publica · New York, NY · 2024
General
- $10,000
Pro Publica · New York, NY · 2024
General
- $10,000
Rural Advancement Foundation Int'L · Pittsboro, NC · 2024
General
- $10,000
Rural Advancement Foundation Int'L · Pittsboro, NC · 2024
General
- $10,000
The Bail Project · Pasadena, CA · 2024
General
- $10,000
The Bail Project · Pasadena, CA · 2024
General
- $10,000
Alliance for Safety & Justice · Oakland, CA · 2023
General
- $10,000
Bermuda Institute of Ocean · New York, NY · 2023
General
- $10,000
Committee To Project Journalists · New York, NY · 2023
General
- $10,000
Costal Conservation Association · Orlando, FL · 2023
General
- $10,000
Free Arts of Nyc · New York, NY · 2023
General
- $10,000
Heroes On the Water · Allen, TX · 2023
General
- $10,000
Lucy Burns Institute · Madison, WI · 2023
General
- $10,000
Nat'L Assoc of Children Addictions · Kensington, MD · 2023
General
- $10,000
Rural Advancement Foundation Int'L · Pittsboro, NC · 2023
General
- $10,000
Bermuda Institute of Ocean · New York, NY · 2022
General
- $10,000
Lucy Burns Institute · Madison, WI · 2022
General
- $10,000
National Assoc Children Addictions · Kensington, MD · 2022
General
- $10,000
Prison Policy Initiative · Northampton, MA · 2022
General
- $10,000
Razom · New York, NY · 2022
General
- $10,000
Rip Medical Debt · Long Island City, NY · 2022
General
- $10,000
Rural Advancement Foundation Int'L · Pittsboro, NC · 2022
General
- $7,500
Safe Shores - Dc Childrens Advocacy · Washington, DC · 2025
General
- $7,500
Safe Shores - Dc Childrens Advocacy · Washington, DC · 2024
General
- $7,500
Safe Shores - Dc Childrens Advocacy · Washington, DC · 2024
General
- $7,500
Safe Shores - Dc Childrens Advocacy · Washington, DC · 2023
General
- $7,500
Safe Shores - Dc Childrens Advocacy · Washington, DC · 2022
General
- $7,000
Islesboro Affordable Property · Rockland, ME · 2025
General
- $6,000
Oceanites · Washington, DC · 2025
General
- $5,000
Chef Ann Foundation · Boulder, CO · 2025
General
- $5,000
Leleka Foundation · Palo Alto, CA · 2025
General
- $5,000
Nova Ukraine · Stanford, CA · 2025
General
- $5,000
Razom · New York, NY · 2025
General
- $5,000
Seed Spot · Phoenix, AZ · 2025
General
- $5,000
The Groundtruth Project · Boston, MA · 2025
General
- $5,000
Congress for New Urbanism · Washington, DC · 2024
General
- $5,000
Congress for New Urbanism · Washington, DC · 2024
General
- $5,000
Leleka Foundation · Palo Alto, CA · 2024
General
- $5,000
Nova Ukraine · Stanford, CA · 2024
General
- $5,000
Nova Ukraine · Stanford, CA · 2024
General
- $5,000
Oceanites · Washington, DC · 2024
General
- $5,000
Oceanites · Washington, DC · 2024
General
Who else funds this kind of work
Same state
- The Bloomberg Family Foundation815 grants · $3.00B
- Pfizer Patient Assistance Foundation134 grants · $5.49B
- Gs Donor Advised Philanthropy Fund19,135 grants · $6.79B
Similar purposes
- Anne Ray Foundation302 grants · $489.6M
- National Fish and Wildlife Foundation3,150 grants · $1.09B
- The David and Lucile Packard Foundation3,141 grants · $1.12B
Similar grant size
- The US Charitable Gift Trust12,013 grants · $406.6M
- Paypal Charitable Giving Fund32,081 grants · $1.40B
- Seattle Foundation14,012 grants · $457.3M
Grants already paid are the record; PaperOrbit reads your paper and finds the funders whose record matches it — then explains why.
Search funders like this oneSource: IRS Form 990-PF, Part XV, as filed by the foundation. These are grants already paid — a record of what this funder backs, not an open call.