· Private foundation
The Ptarmigan Foundation Inc
Its FY2024 filing reports that it funds preselected organizations and did not take unsolicited requests; check the foundation's own site before ruling it out.
What it funded, over time
Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2024.
Where the money goes
Grants by size, and the largest recipients.
By grant size · FY2024
- Under $10k5 grants · $20k
- $10k–50k3 grants · $30k
- $50k–250k1 grant · $100k
| Recipient | Amount |
|---|---|
| STANFORD UNIVERSITY HOOVER INSTITUTION | $100,000 |
| GEORGE WASHINGTON'S MOUNT VERNON | $10,000 |
| THE HILL MUSEUM AND MANUSCRIPT LIBRARY | $10,000 |
| AMERICAN COUNCIL OF TRUSTEES AND ALUMNI | $10,000 |
| GEORGE MASON UNIVERSITY ANTONIN SCALIA LAW SCHOOL | $5,000 |
| MOUNT DESERT FESTIVAL OF CHAMBER MUSIC | $5,000 |
| THE GENERAL HENRY KNOX MUSEUM | $5,000 |
| THE JACKSON LABORATORY | $3,000 |
| THE PARISH OF ST MARY AND ST JUDE | $2,000 |
Does the money reach high-need areas?
Each grant placed by the hardship in its grantee’s ZIP, against the area’s typical level.
Dollar for dollar, its grants (FY17–24) land where the poverty rate runs at 11%, against an area that typically sits at 8%. 57% of its dollars go to grantees based in above-average-need neighborhoods. Most of its grants land in higher-need ZIPs.
How this is measured
Which US states its grants reach
How this is measured
Who it funds again
Organizations funded in more than one year, against those funded once.
Grantees it renews have grown median revenue +46% since the first grant, against +23% for those funded once.
11 repeat relationships: 8 still active in FY2024, 3 since wound down; 1 grantees were first funded in FY2024 (too recent to call).
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 FY2024, 93% of grant dollars renewed an existing relationship; $10k went to new ones.
Where new relationships form · theme of each grantee’s first grant
How this is measured
Backed again, and grew
- ACAMERICAN COUNCIL OF TRUSTEES AND ALUMNI8× · 2017–2024 · $80k · revenue +89%
- MDMount Desert Festival of Chamber Music4× · 2020–2024 · $38k · revenue +96% · 34% of their budget
- TJTHE JACKSON LABORATORY4× · 2021–2024 · $23k · revenue +14%
Funded once
- TGTHE GARDEN CLUB OF AMERICAgraduatedone grant, 2017 · $100k · revenue +49%
- AFAMERICANS FOR OXFORD INCone grant, 2019 · $100k · revenue +23%
- CCCHRIST CHURCH PARISH OF GEORGETOWNone grant, 2022 · $50k
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.
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.
Undergraduate, graduate, and professional education and research across a broad array of academic domains.
The mission of the university of cambridge is to contribute to society through the pursuit of education, learning, and research at the highest international levels of excellence. organizationally, we achieve this through two divisions…
The mission of mit is to advance knowledge and educate students in science, technology, and other areas of scholarship that will best serve the nation and the world in the 21st century.
The bac is committed to provide excellence in design education grounded in practice and accessible to diverse communities.
The mission of the american college of the mediterranean is to provide excellence in international education, inspire intercultural awareness, and prepare students for success in a global community through the study of european and…
Rooted in the liberal arts & sciences & lutheran expression of the christian faith, & is committed to offering a challenging education that develops qualities of mind, spirit, & body necessary for a rewarding life of leadership & service…
The University of New Haven is a student-centered comprehensive university with an emphasis on excellence in liberal arts and professional education. Our mission is to prepare our students to lead purposeful and fulfilling lives in a…
The mission of the george washington university (gw) is to educate individuals in liberal arts, languages, sciences, learned professions, and other courses and subjects of study, and to conduct scholarly research and publish the findings…
To graduate people of uncommon integrity, competence, and maturity, who are effective lifelong learners and responsible citizens, and who are prepared to contribute substantially to the world in which they live.
Research, education and general - princeton university is a private not-for-profit, non-sectarian institution of higher learning with approximately 5,700 undergraduate and 3,300 graduate students. 2,500 students graduated in the 2024-2025…
Wilson college empowers students to be confident and critical thinkers, creative visionaries, effective communicators, honorable leaders, and agents of justice.
The broad mission of the ASCSA has remained constant over its distinguished history: teaching research archaeological exploration publication and dissemination of research. Founded in 1881 the ASCSA provides graduate students and scholars…
How this is measured
12 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. 12 of the 24 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.
Where the money sits, by cause and then by grantee
Each grantee by its size and the funder’s share of it; top left is load-bearing
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 THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY ↗
- Who funds THE GARDEN CLUB OF AMERICA ↗
- Who funds AMERICANS FOR OXFORD INC ↗
- Who funds AMERICAN COUNCIL OF TRUSTEES AND ALUMNI ↗
- Who funds HILL MUSEUM & MANUSCRIPT LIBRARY ↗
- Who funds The General Henry Knox Museum ↗
- Who funds Mount Desert Festival of Chamber Music ↗
- Who funds THE JACKSON LABORATORY ↗
- Who funds INSTITUTE FOR JUSTICE ↗
- Who funds THE CENTER FOR EDUCATION REFORM ↗
- Who funds THE MOUNT VERNON LADIES' ASSOCIATION OF THE UNION ↗
- Who funds JERUSALEM UNIVERSITY COLLEGE ↗
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: National Philanthropic Trust · Vanguard Charitable Endowment Program · Donor Advised Charitable Giving Inc · Fidelity Investments Charitable Gift Fund
How this is measured
How much its grantees rely on government
Each dot is one organization The Ptarmigan Foundation Inc funds: left to right is the share of its income from government, bottom to top the share from The Ptarmigan Foundation Inc. Bigger dots raise more.
How this is measured
Warm introductions · Powered by PlinthPlus
How do I get to The Ptarmigan Foundation Inc?
Find your warmest path to The Ptarmigan 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.
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