· Private foundation
Treeline Foundation
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 $10k3 grants · $10k
- $10k–50k34 grants · $540k
- $50k–250k7 grants · $575k
| Recipient | Amount |
|---|---|
| YMCA OF GREATER SEATTLE | $110,000 |
| WASHINGTON TRAILS ASSOCIATION | $100,000 |
| SIGHTLINE INSTITUTE | $100,000 |
| THE SIERRA CLUB FOUNDATION | $75,000 |
| 350ORG | $75,000 |
| NORTHWEST ABORTION ACCESS FUND | $65,000 |
| FORTERRA | $50,000 |
| SEATTLE SHAKESPEARE COMPANY | $25,000 |
| ZENO | $25,000 |
| EARTHGEN | $25,000 |
| Individual grant recipient | $25,000 |
| BENEFITS LAW CENTER | $25,000 |
| THE TRUST FOR PUBLIC LAND | $25,000 |
| YOUTHCARE | $20,000 |
| DESC | $20,000 |
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 (FY17–24, $1.4M) land where the poverty rate runs at 9%, against an area that typically sits at 11%. 2% of those dollars go to grantees based in above-average-need neighborhoods. Its grants skew toward lower-need ZIPs.
How this is measured
Which US states its grants reach
How this is measured
Where the work is directed
The same grants placed two ways: where each recipient sits, and where its stated purpose sends the money.
About 9% of Treeline Foundation’s grant dollars are earmarked for a different county than the recipient’s own address. By recipient address, 80% of the giving stays in WA; by stated purpose, 77%.
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 +53% since the first grant, against -1% for those funded once.
61 repeat relationships: 42 still active in FY2024, 19 since wound down; 2 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, 98% of grant dollars renewed an existing relationship; $23k went to new ones.
Where new relationships form · theme of each grantee’s first grant
How this is measured
Backed again, and grew
- TYTHE YOUNG MEN'S CHRISTIAN ASSOCIATION OF GREATER SEATTLE (6871)8× · 2017–2024 · $1.0M · revenue +49%
- SISightline Institute7× · 2017–2024 · $700k · revenue +95%
- WTWASHINGTON TRAILS ASSOCIATION8× · 2017–2024 · $700k · revenue +96%
Funded once
NATIONAL NETWORK OF ABORTION FUNDS INCgraduatedone grant, 2019 · $50k · revenue +188%- TTThe Trauma Foundationone grant, 2022 · $25k · revenue -43%
- PNPHILANTHROPY NORTHWESTone grant, 2020 · $24k · revenue -84%
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.
Fsc i&p promotes environmentally appropriate, socially beneficial, and economically viable management of the world's forests. this mission aligns with the forest stewardship council (fsc), its network of offices, and other organizations.…
To cultivate leaders and community partnerships to advance environmental justice.
Preserve in perpetuity the natural habitats, rural landscapes, and open spaces of the great peninsula of washington's puget sound.
Washington wild protects and restores wild lands and waters in washington state through advocacy, education and civic engagement.
The association of washington cities builds connections between our state's diverse cities and towns, while providing our members with the support needed to thrive through delivery of data-driven education, nationally recognized pooling…
Founded in 2001, Spark Northwest accelerates the just transition to clean energy in the Pacific Northwest. Spark Northwest uses two primary strategies: (1) on-the-ground project consulting, focusing on communities with limited financial…
Eastern national promotes the public's understanding and support of america's national parks and other public trust partners by providing quality educational experiences, products and services.
Building a diverse grassroots movement to address the causes of climate disruption through justice-based solutions by inspiring, training and mobilizing people to act.
The Center for Environmental Law & Policy is a statewide organization whose mission is to protect, preserve and restore Washington's waters through education, advocacy, policy reform, and public interest litigation.
To establish and promote programs to protect the global climate, forests, wildlife and the natural environment, through research, advocacy, and investigation.
The aquarium of the pacific's mission is to instill a sense of wonder, respect, and stewardship for the pacific ocean, its inhabitants, and ecosystems.
The mission of the Whatcom Land Trust is to preserve and protect wildlife habitat, scenic, agricultural and open space lands in Whatcom County for future generations by securing interests in land and promoting land stewardship.
How this is measured
64 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. 64 of the 75 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 NATURE CONSERVANCY ↗
- Who funds THE YOUNG MEN'S CHRISTIAN ASSOCIATION OF GREATER SEATTLE (6871) ↗
- Who funds SIERRA CLUB FOUNDATION ↗
- Who funds Sightline Institute ↗
- Who funds WASHINGTON TRAILS ASSOCIATION ↗
- Who funds CLIMATE SOLUTIONS ↗
- Who funds FORTERRA NW ↗
- Who funds 350ORG ↗
- Who funds NORTHWEST ABORTION ACCESS FUND ↗
- Who funds THE WILDERNESS SOCIETY ↗
- Who funds SEATTLE SHAKESPEARE FESTIVAL ↗
- Who funds Zeno ↗
- Who funds Tune In To Nature org ↗
- Who funds Maris Place ↗
- Who funds YOUTHCARE ↗
- Who funds PLYMOUTH HOUSING GROUP AND SUBSIDIARIES ↗
- Who funds Solid Ground Washington ↗
- Who funds EarthGen Fka WA Green Schools ↗
- Who funds The Vera Project ↗
- Who funds ISLANDWOOD ↗
- Who funds THE TRUST FOR PUBLIC LAND ↗
- Who funds PACIFIC SCIENCE CENTER FOUNDATION ↗
- Who funds BENEFITS LAW CENTER ↗
- Who funds CHILDREN & NATURE NETWORK ↗
- Who funds THE AMERICAN ALPINE CLUB ↗
- Who funds CASA LATINA ↗
- Who funds TINY TREES PRESCHOOL ↗
- Who funds The Mountains to Sound Greenway Trust ↗
- Who funds A CONTEMPORARY THEATRE INC ↗
- Who funds NORTHWEST CHOIRS ↗
- Who funds THE MOUNTAINEERS ↗
- Who funds SEATTLE REPERTORY THEATRE ↗
- Who funds Sawhorse Revolution ↗
- Who funds WASHINGTON CONSERVATION ACTION EDUCATION FUND ↗
- Who funds BIRDS CONNECT SEATTLE ↗
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: Seattle Foundation · Puget Sound Energy Foundation · The Norcliffe Foundation · Kaleidoscope Foundation · Grousemont Foundation · Mightycause Charitable Foundation · Moccasin Lake Foundation · The Bullitt Foundation · Real Progress Foundation · McKinstry Charitable Foundation · United Way of King County · Artsfund
How this is measured
How much its grantees rely on government
Each dot is one organization Treeline Foundation funds: left to right is the share of its income from government, bottom to top the share from Treeline Foundation. Bigger dots raise more.
How this is measured
Warm introductions · Powered by PlinthPlus
How do I get to Treeline Foundation?
Find your warmest path to Treeline 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 Treeline’s filings →