· 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 you funded, over time
Every grant placed by its stated purpose and the recipient’s mission, by year — across FY2017–2024.
Where the money goes
Your grants by size, and where they go.
By grant size · FY2024
- Under $10k3 grants · $10k
- $10k–50k34 grants · $540k
- $50k–250k7 grants · $575k
| Recipient | Amount |
|---|---|
| YMCA OF GREATER SEATTLE | $110,000 |
| SIGHTLINE INSTITUTE | $100,000 |
| WASHINGTON TRAILS ASSOCIATION | $100,000 |
| THE SIERRA CLUB FOUNDATION | $75,000 |
| 350ORG | $75,000 |
| NORTHWEST ABORTION ACCESS FUND | $65,000 |
| FORTERRA | $50,000 |
| BENEFITS LAW CENTER | $25,000 |
| EARTHGEN | $25,000 |
| Individual grant recipient | $25,000 |
| ZENO | $25,000 |
| SEATTLE SHAKESPEARE COMPANY | $25,000 |
| THE TRUST FOR PUBLIC LAND | $25,000 |
| DESC | $20,000 |
| MARY'S PLACE | $20,000 |
Do your dollars go where the need is?
Each grant placed by the hardship in its grantee’s ZIP, then read against the area’s typical level.
Your 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. Your grants skew toward lower-need ZIPs.
Matched: human-services grants are those whose grantee’s IRS cause code is Human Services. Placed by people below the poverty linein the grantee’s ZIP, averaged from the tracts in that ZIP; grantee ZIP can differ from where services are delivered.
Which US states your grants reach
US grants placed by each grantee’s ZIP, which can differ from where services are actually delivered. Need from public data — U.S. Census/ACS, CDC PLACES, Eviction Lab, USDA — shown as context about the area, never attributed to your giving.
Where the work is directed
The same grants, placed two ways — where each recipient sits, and where its stated purpose earmarks the money.
About 9% of Treeline Foundation’s grant dollars are earmarked, by their stated purpose, for a different county than the recipient’s own address — money that lands at a nonprofit in one place but is meant to do its work in another. Read by recipient address, 80% of the giving stays in WA; read by stated purpose it is 77% — less of the work is directed home than the recipients' locations suggest.
Recipient view: each grant at its grantee’s ZIP, mapped to a county. Directed view: each grant at the county its stated purpose names, falling back to the recipient’s county when the purpose names no place; US grants only. A county shows only if it carries the top 95% of that view’s dollars. Purposes are read from the foundation’s own 990 grant descriptions.
Who you back again
Which organizations you funded more than once, and which you funded a single time. Each grantee is matched to its own filings.
And the relationships you keep tend to grow: grantees you re-up on have seen median revenue of +42% since the first grant, against -40% for the ones you 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
First-time = a grantee’s first year in your filing window; renewed = funded in an earlier year too. As a portfolio matures the renewed share naturally climbs — once funded, an org stays “renewable” — so the signal is the years that buck it (a new-grantee intake wave). The earliest year is left-censored: relationships that predate the data read as “new.” Theme is the grantee’s IRS cause.
Backed again, and grew
- TYTHE YOUNG MEN'S CHRISTIAN ASSOCIATION OF GREATER SEATTLE (6871)8× · 2017–2024 · $1.0M · revenue +38%
- SISightline Institute7× · 2017–2024 · $700k · revenue +10%
- 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%
Repeat = funded in two or more distinct years; growth and survival are read from each grantee’s own subsequent IRS filings.
The map has a center of gravity: the average direction from the rest of the sector toward the organizations the foundation funds — the shape of its giving. Scoring every nonprofit along that direction surfaces the ones that look most like the portfolio. These are the closest matchesthat aren’t grantees — 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.
For reference, the grantee most central to the portfolio’s shape is Philanthropy Northwest and the most unlike its peers is The 5 Gyres Institute. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
For each theme you fund, this compares how the sector’s money is shifting with how your own giving is shifting.
Sector change and giving change are each shown relative to their own range, growing (right) or shrinking (left); both normalized, so inflation isn’t mistaken for growth.
Your grantees are a median of 36 years old; the field is 16. You back the established end — and your money leans older still.
The field is 21% startups (under 5 years old) — 0% of your grantees by number, and just 0% of your money.
The orgs you fund almost never close — 0.0% lost their exemption, against 12% of the field you don’t fund.
Age = years since IRS exemption (a founding proxy). “Closed” = auto-revocation for 3 years of non-filing — a floor on closure, not proof, and bigger established orgs lapse least. Association, not causation.
64 grantees tracked through their own filings, 2017–2025.
Each one resolved to its own IRS returns and tracked year by year — your grant beside their revenue from every source. Association, dated; never a causal claim.
Counted here: distinct organizations you funded across 2017–2025, 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; the rest are funded organizations whose filings we could not track year by year.
Where your money sits — by cause, then by grantee
Each org by its size and your share of it — top-left is where you’re load-bearing
Go grantee by grantee — a decade per org, and how each moved after you funded them
A decade per grantee — revenue shaded, your 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 ↗
The grantmakers whose grantees overlap with yours far more than size alone predicts. Each orbits closer the stronger the alignment; the arcs between them show where they also fund each other. Here it reads as a tightly interlocked camp — 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
Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. A research starting point: overlap is association, not proof of shared intent.
Government reliance of your grantees
Every dot is one organization Treeline Foundation funds. Left–right is the share of its income from government; up–down is the share from you. Bigger dots raise more. Filter to federal or a single department — and drag the year to watch it move.
Government income is each org’s traced federal awards (USASpending — grants and contracts) plus state payments (open checkbooks) as a share of its total revenue (IRS Form 990); the self-reported government-grant line (990 line 1e) is carried for cross-check: a grantee that reports government grants we could not trace to a source is left off the chart rather than shown as receiving none. An association, not a claim that your grant caused the public funding. Coverage is precision-first — a floor, not a census; state records exist for 9 states, so a grantee outside them shows no state figure (dimmed) rather than a false zero. Federal award amounts are obligations, which can span years, so a single-year share is indicative. 990 filings lag 12–24 months.
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.