· Private foundation
The GDL 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.
What it funded, over time
Every grant placed by its stated purpose and the recipient’s mission, by year, FY2019 to 2025.
Where the money goes
Grants by size, and the largest recipients.
By grant size · FY2025
- Under $10k4 grants · $13k
- $10k–50k5 grants · $73k
| Recipient | Amount |
|---|---|
| Northfield Mount Herman School | $22,500 |
| Trustees of Tufts College | $20,000 |
| Grand Teton National Park Fdn | $10,000 |
| Jackson Hole Land Trust | $10,000 |
| Cornell University | $10,000 |
| Adam J Lewis Academy | $5,000 |
| Cornell Lab of Ornithology | $2,500 |
| University of Illinois Fdtn | $2,500 |
| Appalachian Mountain Club | $2,500 |
Does the money reach high-need areas?
Each grant placed by the hardship in its grantee’s ZIP, against the area’s typical level.
Its human-services grants (FY19–19, $500) land where the poverty rate runs at 10%, against an area that typically sits at 8%. 100% of those 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 -21% for those funded once.
10 repeat relationships: 8 still active in FY2025, 2 since wound down; 1 grantees were first funded in FY2025 (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 FY2025, 97% of grant dollars renewed an existing relationship; $3k went to new ones.
Where new relationships form · theme of each grantee’s first grant
How this is measured
Backed again, and grew
Trustees of Tufts College5× · 2020–2025 · $130k · revenue +39%
NORTHFIELD MOUNT HERMON SCHOOL5× · 2021–2025 · $100k · revenue +46%
GRAND TETON NATIONAL PARK FOUNDATION5× · 2021–2025 · $90k · revenue +250%
Funded once
- UOUNIVERSITY OF TEXAS AT AUSTINone grant, 2020 · $40k
- GSGEOLOGICAL SOCIETY OF AMERICA FOUNDATIONone grant, 2019 · $15k · revenue -25%
- ARAMERICAN ROCK MECHANICS ASSOCIATION ARMA FOUNDATIONone grant, 2020 · $5k · revenue -99%
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.
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.
Advance science, engineering, and innovation throughout the world for the benefit of all. the world's largest multidisciplinary scientific society and a leading publisher of cutting-edge research through its science family of journals,…
The american astronomical society (aas), established in 1899, is the major organization of professional astronomers in north america. the basic objective of the aas is to promote the advancement of astronomy and closely related branches of…
Agu's mission is to advance and support an inclusive community of earth and space scientists and partners dedicated to discovery and solutions to societal challenges. agu seeks to catalyze discovery and solutions to scientific and societal…
We provide students, educators, practitioners, and partners with the resources they need to enter the field, develop their careers, and form professional friendships that can last a lifetime. through annual and ongoing programs, events,…
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…
American gas association's (the association) mission is to develop and advocate for informed, innovative, and durable policy that fulfills our nation's energy needs, environmental aspirations and economic potential. we are committed to…
Enhance the ability of actec members to provide the most efficient and highest quality services to their clients; develop qualified trust and estate counselors; improve and reform probate, trust and tax laws, procedures, and standards of…
See schedule ouniversity corporation for atmospheric research (ucar), on behalf of, and in cooperation with its member university members, is engaged in the management of long-term atmospheric and related research and educational…
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 primary mission of furman as a liberal arts institution is to provide a distinctive education in fine arts, humanities, social sciences, mathematics and the sciences, as well as selected professional disciplines.
To preserve the unique character and natural resources of harvard.
How this is measured
16 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. 16 of the 19 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 Trustees of Tufts College ↗
- Who funds NORTHFIELD MOUNT HERMON SCHOOL ↗
- Who funds GRAND TETON NATIONAL PARK FOUNDATION ↗
- Who funds JACKSON HOLE LAND TRUST ↗
- Who funds Cornell University ↗
- Who funds ADAM J LEWIS ACADEMY INC ↗
- Who funds JACKSON HOLE COMMUNITY HOUSING TRUST ↗
- Who funds University of Illinois Foundation ↗
- Who funds GEOLOGICAL SOCIETY OF AMERICA FOUNDATION ↗
- Who funds THE COMMUNITY FOUNDATION OF EASTERN CONNECTICUT INC ↗
- Who funds Appalachian Mountain Club ↗
- Who funds AMERICAN ROCK MECHANICS ASSOCIATION ARMA FOUNDATION ↗
- Who funds GEOLOGICAL SOCIETY OF AMERICA INC ↗
- Who funds Central Texas Food Bank Inc ↗
- Who funds WOMENS STORYBOOK PROJECT OF TEXAS ↗
- Who funds CONSPIRARE INC ↗
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: Donor Advised Charitable Giving Inc · American Online Giving Foundation Inc · Fidelity Investments Charitable Gift Fund · Amazonsmile Foundation
How this is measured
How much its grantees rely on government
Each dot is one organization The GDL Foundation funds: left to right is the share of its income from government, bottom to top the share from The GDL Foundation. Bigger dots raise more.
- Trustees of Tufts College: 13% of income from government
- Appalachian Mountain Club: 1% of income from government
How this is measured
Warm introductions · Powered by PlinthPlus
How do I get to The GDL Foundation?
Find your warmest path to The GDL 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.
Play a game based on GDL’s filings →