· Private foundation
Thomas O Brown 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, FY2017 to 2024.
Where the money goes
Grants by size, and the largest recipients.
By grant size · FY2025
- Under $10k2 grants · $6k
- $10k–50k8 grants · $195k
- $50k–250k1 grant · $60k
| Recipient | Amount |
|---|---|
| GLACIER NATIONAL PARK CONSERVANCY | $60,000 |
| PUBLIC LAND ALLIANCE | $30,000 |
| GRAND TETON NATIONAL PARK FOUNDATION | $30,000 |
| GREATER YELLOWSTONE COALITION | $30,000 |
| NATIONAL PARKS CONSERVATION ASSOCIATION | $25,000 |
| PALOUSE LAND TRUST | $25,000 |
| FRIENDS OF WHITEFISH DUNES STATE PARK | $25,000 |
| ROCKY MOUNTAIN CONSERVANCY | $20,000 |
| WASHINGTON'S NATIONAL PARK FUND | $10,000 |
| TART TRAILS | $5,000 |
| NATIONAL PARK FOUNDATION | $1,000 |
Does the money reach high-need areas?
Each grant placed by the hardship in its grantee’s ZIP, against the area’s typical level.
Its human-services grants (FY17–22, $135k) land where the poverty rate runs at 16%, against an area that typically sits at 9%. 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 +119% since the first grant, against +42% for those funded once.
18 repeat relationships: 10 still active in FY2025, 8 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, 90% of grant dollars renewed an existing relationship; $25k went to new ones.
Where new relationships form · theme of each grantee’s first grant
How this is measured
Backed again, and grew
GLACIER NATIONAL PARK CONSERVANCY9× · 2017–2025 · $530k · revenue +125%
NATIONAL PARKS CONSERVATION ASSOCIATION9× · 2017–2025 · $240k · revenue +51%- GYGREATER YELLOWSTONE COALITION9× · 2017–2025 · $236k · revenue +45%
Funded once
- TRTHE RIDGES SANCTUARY INCgraduatedone grant, 2018 · $10k · revenue +138%
- EPECOLOGY PROJECT INTERNATIONALone grant, 2017 · $2k · revenue -1%
WASHINGTON STATE UNIVERSITY FOUNDATIONgraduatedone grant, 2019 · $1k · revenue +42%
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 pacific crest trail association's mission is to advocate for the pacific crest trail as an inspirational outdoor experience, to connect people to the pct, and to conserve the trail.
The mission of the teton regional land trust is to conserve working farms and ranches, fish and wildlife habitat, and scenic open spaces in eastern idaho for this and future generations.
Placer Land Trust works with willing landowners and conservation partners to permanently protect and care for natural and agricultural lands in Placer County for current and future generations.
Cascadia wildlands defends and restores cacasia's wild ecosystems in the forests,in the courts, and in the streets. we envision vast old-growth forests, rivers full of wild salmon, wolves howling in the backcountry, a stable climate, and…
Working to restore the watersheds, wilderness, and wildlife in the high sierra nevada following the john muir trail (est. 1915) for all life in california.
Icl's mission is to create a conservation community and pragmatic, enduring solutions that protect and restore the air you breathe, the water you drink, and the land and wildlife you love.
It is our mission at huron pines to conserve and enhance northern michigan's natural resources to ensure healthy water, protected places and vibrant communities. for alomst 50 years, our work across the forests, lakes and streams of…
We bring science, policy, and proven solutions directly to communities working to restore the integrity and natural connectivity of the landscapes in which they live. (see schedule o)
Colorado open lands' mission is to preserve the significant open lands and natural heritage of colorado through private and public partnerships, innovative land conservation, and strategic leadership.
The national forest foundation (nff), chartered by congress, turns america's love of nature into meaningful action for 193-million acre national forest system through on the ground program work and grant making activities, and accepts and…
The wood river land trust's mission is to protect and sustain the treasured landscapes and life-giving waters of the wood river valley and to inspire love for this special place for generations to come.
How this is measured
18 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. 18 of the 22 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 GLACIER NATIONAL PARK CONSERVANCY ↗
- Who funds NATIONAL PARKS CONSERVATION ASSOCIATION ↗
- Who funds GREATER YELLOWSTONE COALITION ↗
- Who funds PUBLIC LANDS ALLIANCE ↗
- Who funds PALOUSE LAND TRUST INC ↗
- Who funds TRAVERSE AREA RECREATION & TRANSPORTATION TRAILS INC ↗
- Who funds SAVE THE REDWOODS LEAGUE ↗
- Who funds LATAH TRAIL FOUNDATION INC ↗
- Who funds ROCKY MOUNTAIN CONSERVANCY ↗
- Who funds PALOUSE-CLEARWATER ENVIRONMENTAL INSTITUTE INC ↗
- Who funds WASHINGTON'S NATIONAL PARK FUND ↗
- Who funds ZION NATURAL HISTORY ASSOCIATION ↗
- Who funds GRAND TETON NATIONAL PARK FOUNDATION ↗
- Who funds PARKS AND WILDLIFE FOUNDATION OF TEXAS ↗
- Who funds THE RIDGES SANCTUARY INC ↗
- Who funds NATIONAL PARK FOUNDATION ↗
- Who funds ECOLOGY PROJECT INTERNATIONAL ↗
- Who funds WASHINGTON STATE UNIVERSITY FOUNDATION ↗
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 Park Foundation · Shell USA Company Foundation · Raymond James Charitable Endowment Fund · Vanguard Charitable Endowment Program · Morgan Stanley Global Impact Funding Trust Inc · The Bank of America Charitable Foundation Inc · National Philanthropic Trust · American Online Giving Foundation Inc · Donor Advised Charitable Giving Inc · Fidelity Investments Charitable Gift Fund · Amazonsmile Foundation
How this is measured
How much its grantees rely on government
Each dot is one organization Thomas O Brown Foundation funds: left to right is the share of its income from government, bottom to top the share from Thomas O Brown Foundation. Bigger dots raise more.
How this is measured
Play a game based on Thomas O Brown’s filings →