New York · Private foundation
Mostyn 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.
- $396k
- Granted FY2025(still arriving)
- 45
- Grants FY2025
- 30
- Organizations funded FY2024
- 37%
- First-time grantees FY2024
- Median grant, FY2025
- $5,000
- Largest grant, FY2025
- $85,000
- Organizations funded a year
- 24 to 43
- FY2018 to FY2024
- States reached, FY2025
- 22
- Total assets, FY2025
- $6.2M
- Applications
- Preselected organizations only
- Per its most recent filing; check its own site
How open it is to new grantees
In FY2024, 37% of the organizations Mostyn Foundation Inc funded were first-time grantees, receiving 16% of its grant dollars.
New vs renewed · share of each year
In FY2024, 84% of grant dollars renewed an existing relationship; $64k went to new ones.
Where new relationships form · theme of each grantee’s first grant
How this is measured
The numbers by year
| Fiscal year | Organizations funded | To those organizations | First-time grantees |
|---|---|---|---|
| FY2025still arriving | 44 | $391k | 52% |
| FY2024 | 30 | $396k | 37% |
| FY2023 | 34 | $369k | 47% |
| FY2022 | 31 | $390k | 48% |
| FY2021 | 32 | $426k | 47% |
| FY2020 | 43 | $341k | 77% |
| FY2019 | 24 | $342k | 92% |
| FY2018 | 25 | $351k | 48% |
What it funded, over time
Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2025.
Where its grants go
Grant dollars by states, across the years we hold.
Which US states its grants reach
Top grantees
Largest recipients by total granted, FY2017 to FY2025, and the share of each one’s budget the grants supplied at peak.
| Grantee | Total granted | Years | Share of their budget |
|---|---|---|---|
| Wild Oceans Inc | $661,000 | 8 | 24% |
| International Game Fish Association Inc | $271,000 | 9 | 1% |
| Diabetes Research Institute Foundation Inc | $167,500 | 9 | 0% |
| Heartstrong Horsemanship Inc | $112,500 | 6 | 38% |
| Bonefish & Tarpon Trust Inc | $112,000 | 8 | 1% |
| Rural Advancement Foundation Internation | $70,000 | 7 | 1% |
| Lucy Burns Institute Inc | $60,000 | 6 | 0% |
| Islesboro Affordable Property | $47,000 | 4 | 17% |
| Town of Islesboro | $35,000 | 2 | n/a |
| Food On The Stove Inc | $32,500 | 3 | 22% |
Show all 98 grantees
What it could do for these grantees
Plus 72 recipients with no EIN on record ($1.2M), not named here.
Where it is load-bearing
Mostyn Foundation Inc supplied at least a quarter of the budget for 1 of its grantees at some point. The chart plots its 90 largest grantees; load-bearing ones sit top left.
Tap a dot to name the grantee.
How this is measured
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.
Open a dossier: Greater Washington Community Foundation · The Morris and Gwendolyn Cafritz Foundation · The New York Community Trust · Clark Charitable Foundation Inc Dba a James & Alice B Clark Foundation · Eugene & Agnes E Meyer Foundation · Tides Foundation · Silicon Valley Community Foundation · John S and James L Knight Foundation · Rockefeller Philanthropy Advisors Inc · Gs Donor Advised Philanthropy Fund for Wealth Management Inc · New Venture Fund · Globalgiving Foundation Inc
How this is measured
Warm introductions · Powered by PlinthPlus
How do I get to Mostyn Foundation Inc?
Find your warmest path to Mostyn 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.
About Mostyn Foundation Inc
- How much does Mostyn Foundation Inc give?
- Mostyn Foundation Inc reported 45 grants totaling $396,000 in its FY2025 IRS filing. It funded between 24 and 43 organizations a year over FY2018 to FY2024.
- What does Mostyn Foundation Inc fund?
- By grant dollars over FY2017 to FY2025, its largest causes are Environment (25%), Arts & Culture (15%), Animals (15%).
- Who are Mostyn Foundation Inc's largest grantees?
- By total granted over FY2017 to FY2025: Wild Oceans Inc ($661k), International Game Fish Association Inc ($271k), Diabetes Research Institute Foundation Inc ($168k).
- Does Mostyn Foundation Inc fund new organizations?
- In FY2024, 37% of the organizations it funded were first-time grantees.
- Does Mostyn Foundation Inc accept unsolicited applications?
- Its most recent filing reports that it funds preselected organizations and does not take unsolicited requests. Check the foundation's own site before ruling it out.
- Which funders back the same organizations as Mostyn Foundation Inc?
- Its strongest co-funders, measured against what their size predicts, include Greater Washington Community Foundation, The Morris and Gwendolyn Cafritz Foundation, The New York Community Trust.
- Where is Mostyn Foundation Inc based?
- Mostyn Foundation Inc is based in NY.
Play a game based on Mostyn’s filings →