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· 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.

$1.1M
Granted FY2024still arriving
44
Grants FY2024still arriving
10
States reached
$110k
Largest
01What it funds
0197% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2024.

Environment$5.8MHuman Services$1.1MArts & Culture$959kRecreation & Sports$810kHousing & Shelter$560kEducation$505kAnimals$320kInternational$205kOther$0
02FY2024 · 44 grants

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
$20,000
Median grant
10
States reached
$750k
Total assets
Largest grants
RecipientAmount
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
02The need
03

Does the money reach high-need areas?

Each grant placed by the hardship in its grantee’s ZIP, against the area’s typical level.

show:

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.

area typical 11%DEFINE AMERICAN: $10k → 14%DEFINE AMERICAN: $10k → 14%DEFINE AMERICAN: $10k → 14%YOUTHCARE: $20k → 9%BENEFITS LAW CENTER: $25k → 9%BENEFITS LAW CENTER: $25k → 9%SEATTLE COMMUNITY LAW CENTER: $25k → 9%BENEFITS LAW CENTER: $10k → 9%BENEFITS LAW CENTER: $10k → 9%BENEFITS LAW CENTER: $10k → 9%BENEFITS LAW CENTER: $5k → 9%SEATTLE COMMUNITY LAW CENTER: $5k → 9%YMCA OF GREATER SEATTLE: $215k → 9%YMCA OF GREATER SEATTLE: $110k → 9%YMCA OF GREATER SEATTLE: $110k → 9%YMCA OF GREATER SEATTLE: $110k → 9%YMCA OF GREATER SEATTLE: $90k → 9%YMCA OF GREATER SEATTLE: $90k → 9%YMCA OF GREATER SEATTLE: $90k → 9%YMCA OF GREATER SEATTLE: $90k → 9%YMCA OF GREATER SEATTLE: $25k → 9%YMCA OF GREATER SEATTLE: $25k → 9%YMCA OF GREATER SEATTLE: $25k → 9%YMCA OF GREATER SEATTLE: $25k → 9%YOUTHCARE: $25k → 9%YOUTHCARE: $25k → 9%YOUTHCARE: $25k → 9%YMCA OF GREATER SEATTLE: $20k → 9%YOUTHCARE: $25k → 9%YOUTHCARE: $20k → 9%YOUTHCARE: $20k → 9%YOUTHCARE: $20k → 9%0%20%40%50%more need →
grant to an above-average-need area below average· circle size = grant amount
How this is measured
Matched: human-services grants are those whose grantee’s IRS cause code is Human Services. Placed by people below the poverty line in the grantee’s ZIP, averaged from the tracts in that ZIP.

Which US states its grants reach

WA
MN
NY
MA
OR
CA
CO
AZ
NM
NC
DC
GA
How this is measured
US grants placed by each grantee’s ZIP, which can differ from where services are delivered. Need from public data (U.S. Census/ACS, CDC PLACES, Eviction Lab, USDA), shown as context about the area, never attributed to the funder’s giving.
04

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%.

Treeline Foundationlessmore of its giving
Placed by recipient address · 5.7% directed abroad (not shown)
How this is measured
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 funder’s own 990 grant descriptions.
03Its grantees
repeat funding

Who it funds again

Organizations funded in more than one year, against those funded once.

98%of every dollar goes to organizations it has funded before.
$9.6M · 61 repeat orgs$223k to everyone else

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

Re-uppedFunded once

Organizations

61
10

Total granted

$9.6M
$199k

Median revenue growth · since first grant

+53%
-1%

Still filing today

84%
100%

New vs renewed · share of each year

In FY2024, 98% of grant dollars renewed an existing relationship; $23k went to new ones.

50%100%’17’18’19’20’21’22’23’24
RenewedFirst-time

Where new relationships form · theme of each grantee’s first grant

’17’18’19’20’21’22’23’24
EnvironmentEducationArts & CultureHuman ServicesYouth DevelopmentHousing & ShelterOther
How this is measured
First-time means a grantee’s first year in the filing window; renewed means funded in an earlier year too. The renewed share climbs naturally as a portfolio matures, so the signal is a year that bucks it (a wave of new grantees). 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

  • TY
    THE YOUNG MEN'S CHRISTIAN ASSOCIATION OF GREATER SEATTLE (6871)
    8× · 2017–2024 · $1.0M · revenue +49%
  • SI
    Sightline Institute
    7× · 2017–2024 · $700k · revenue +95%
  • WT
    WASHINGTON TRAILS ASSOCIATION
    8× · 2017–2024 · $700k · revenue +96%

Funded once

  • NATIONAL NETWORK OF ABORTION FUNDS INCgraduated
    one grant, 2019 · $50k · revenue +188%
  • TT
    The Trauma Foundation
    one grant, 2022 · $25k · revenue -43%
  • PN
    PHILANTHROPY NORTHWEST
    one 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.

04Its field

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.

1
Fsc I&P

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.…

Philanthropy
2
Earthcorps

To cultivate leaders and community partnerships to advance environmental justice.

International
3
Great Peninsula Conservancy

Preserve in perpetuity the natural habitats, rural landscapes, and open spaces of the great peninsula of washington's puget sound.

Environment
4
Washington Wild

Washington wild protects and restores wild lands and waters in washington state through advocacy, education and civic engagement.

Animals
5
Association of Washington Cities

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…

—
6
Spark Northwest

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…

Environment
7
Eastern National

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.

Recreation & Sports
8
350PDX

Building a diverse grassroots movement to address the causes of climate disruption through justice-based solutions by inspiring, training and mobilizing people to act.

Environment
9
Center for Environmental Law & Policy

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.

Environment
10
Environmental Investigation Agency

To establish and promote programs to protect the global climate, forests, wildlife and the natural environment, through research, advocacy, and investigation.

International
11
Aquarium of the Pacific Corporation

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.

Animals
12
Whatcom Land Trust

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.

Environment
How this is measured
The grantee most central to the portfolio’s shape is Philanthropy Northwest; 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.
05the grantee network

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.

0
Load-bearing (≥25% of a budget)
21
Early backer (in before they grew)
63/64
Grantees still filing
47/64
Grew since first funded

Where the money sits, by cause and then by grantee

SIERRA CLUB FOUNDATION: $705,000 · EnvironmentSIERRA CLUB FOUNDATIONSightline Institute: $700,000 · EnvironmentSightline InstituteFORTERRA NW: $550,000 · EnvironmentFORTERRA NW350ORG: $500,000 · Environment350ORGNORTHWEST ABORTION ACCESS FUND: $365,000 · EnvironmentNORTHWEST ABORTION ACCESS FUNDTHE WILDERNESS SOCIETY: $300,000 · EnvironmentTHE WILDERNESS SOCIETYEarthGen Fka WA Green Schools: $155,000 · EnvironmentISLANDWOOD: $130,000 · Environment+7 more: $495,000 · Environment+7 moreTHE NATURE CONSERVANCY: $1,327,000 · OtherTHE NATURE CONSERVANCYWASHINGTON TRAILS ASSOCIATION: $700,000 · OtherWASHINGTON TRAILS ASSOCIATIONCLIMATE SOLUTIONS: $600,000 · OtherCLIMATE SOLUTIONSSEATTLE SHAKESPEARE FESTIVAL: $210,000 · OtherYWCA SEATTLE KING SNOHOMISH: $180,000 · OtherDESC: $160,000 · OtherTune In To Nature org: $200,000 · Other+27 more: $915,998 · Other+27 moreTHE YOUNG MEN'S CHRISTIAN ASSOCIATION OF GREATER SEATTLE (6871): $1,025,000 · Human ServicesTHE YOUNG MEN…YOUTHCARE: $180,000 · Human ServicesYOUTHCAREBENEFITS LAW CENTER: $115,000 · Human ServicesBENEFITS LAW …+1 more: $30,000 · Human ServicesZeno: $200,000 · EducationCHILDREN & NATURE NETWORK: $100,000 · EducationCASA LATINA: $90,000 · EducationSawhorse Revolution: $70,000 · EducationUNIVERSITY OF WASHINGTON FOUNDATION: $30,000 · EducationSEATTLE GIRLS' SCHOOL: $30,000 · Education+3 more: $25,000 · EducationThe Vera Project: $135,000 · Arts & CulturePACIFIC SCIENCE CENTER FOUNDATION: $120,000 · Arts & CultureA CONTEMPORARY THEATRE INC: $80,000 · Arts & CultureNORTHWEST CHOIRS: $80,000 · Arts & CultureSEATTLE REPERTORY THEATRE: $70,000 · Arts & CultureArtist Trust: $24,000 · Arts & CultureNORTHWEST FILM FORUM: $20,000 · Arts & Culture+1 more: $5,000 · Arts & CulturePLYMOUTH HOUSING GROUP AND SUBSIDIARIES: $160,000 · Housing & ShelterSolid Ground Washington: $160,000 · Housing & ShelterMaris Place: $180,000 · Youth DevelopmentTotem Star: $60,000 · Youth DevelopmentMETHOW CONSERVANCY: $15,000 · Youth Development
Environment$3,900,000Other$4,292,998Human Services$1,350,000Education$545,000Arts & Culture$534,000Housing & Shelter$320,000Youth Development$255,000

Each grantee by its size and the funder’s share of it; top left is load-bearing

25%50%75%100%$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetTHE NATURE CONSERVANCY: $1,327,000 over 4y, 0.0% of budgetTHE YOUNG MEN'S CHRISTIAN ASSOCIATION OF GREATER SEATTLE (6871): $1,025,000 over 8y, 0.3% of budgetSIERRA CLUB FOUNDATION: $705,000 over 8y, 0.1% of budgetSightline Institute: $700,000 over 7y, 4.4% of budgetWASHINGTON TRAILS ASSOCIATION: $700,000 over 8y, 1.6% of budgetCLIMATE SOLUTIONS: $600,000 over 4y, 5.6% of budgetFORTERRA NW: $550,000 over 8y, 2.0% of budget350ORG: $500,000 over 8y, 0.4% of budgetNORTHWEST ABORTION ACCESS FUND: $365,000 over 7y, 9.8% of budgetTHE WILDERNESS SOCIETY: $300,000 over 6y, 0.2% of budgetSEATTLE SHAKESPEARE FESTIVAL: $210,000 over 8y, 2.8% of budgetZeno: $200,000 over 8y, 2.6% of budgetTune In To Nature org: $200,000 over 4y, 11% of budgetMaris Place: $180,000 over 8y, 12% of budgetYOUTHCARE: $180,000 over 8y, 0.2% of budgetPLYMOUTH HOUSING GROUP AND SUBSIDIARIES: $160,000 over 8y, 0.1% of budgetSolid Ground Washington: $160,000 over 8y, 0.1% of budgetEarthGen Fka WA Green Schools: $155,000 over 8y, 2.3% of budgetThe Vera Project: $135,000 over 8y, 3.4% of budgetISLANDWOOD: $130,000 over 8y, 0.3% of budgetTHE TRUST FOR PUBLIC LAND: $125,000 over 5y, 0.0% of budgetPACIFIC SCIENCE CENTER FOUNDATION: $120,000 over 8y, 0.2% of budgetBENEFITS LAW CENTER: $115,000 over 8y, 4.9% of budgetCHILDREN & NATURE NETWORK: $100,000 over 6y, 1.5% of budgetTHE AMERICAN ALPINE CLUB: $100,000 over 8y, 0.3% of budgetCASA LATINA: $90,000 over 6y, 0.8% of budgetTINY TREES PRESCHOOL: $85,000 over 5y, 1.1% of budgetThe Mountains to Sound Greenway Trust: $80,000 over 8y, 0.4% of budgetA CONTEMPORARY THEATRE INC: $80,000 over 8y, 0.7% of budgetNORTHWEST CHOIRS: $80,000 over 8y, 1.3% of budgetTHE MOUNTAINEERS: $80,000 over 8y, 0.2% of budgetSEATTLE REPERTORY THEATRE: $70,000 over 6y, 0.2% of budgetSawhorse Revolution: $70,000 over 7y, 2.3% of budgetWASHINGTON CONSERVATION ACTION EDUCATION FUND: $60,000 over 4y, 0.5% of budgetBIRDS CONNECT SEATTLE: $60,000 over 8y, 1.0% of budgetTotem Star: $60,000 over 7y, 2.2% of budgetNATIONAL NETWORK OF ABORTION FUNDS INC: $50,000 over 1y, 0.4% of budgetCOOPERATIVE FOR ASSISTANCE AND RELIEF EVERYWHERE INC: $45,000 over 2y, 0.0% of budgetNATIONAL AUDUBON SOCIETY INC: $40,000 over 2y, 0.0% of budgetRVC SEATTLE: $40,000 over 5y, 0.1% of budgetAMERICAN CIVIL LIBERTIES UNION FOUNDATION INC: $40,000 over 2y, 0.0% of budgetTHE ACCESS FUND: $40,000 over 2y, 0.6% of budgetDEFINE AMERICAN INC: $30,000 over 3y, 0.5% of budgetUNIVERSITY OF WASHINGTON FOUNDATION: $30,000 over 3y, 0.0% of budgetSEATTLE GIRLS' SCHOOL: $30,000 over 3y, 0.2% of budgetCRISIS TEXT LINE INC: $30,000 over 3y, 0.1% of budgetThe Trauma Foundation: $25,000 over 1y, 16% of budgetSEATTLE FOUNDATION: $24,000 over 1y, 0.0% of budget
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.

Seattle FoundationWA54.3× affinity30 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

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
Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. Overlap is association, not proof of shared intent.

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.

2024
’20’21’22’23’24’25
no gov · 20%1%5%11%20%funder's share of their income ↑0%25%50%75%100%share of the org’s income from government →
    no gov moneyreceives it· size = income
    2get no government money at all
    24report government grants on their 990 we could not trace to a source (not plotted)
    0rely on government for over half their income
    typical government reliance, FY20–25
    How this is measured
    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 a grant caused the public funding. Coverage is precision-first, a floor rather than 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 to 24 months.
    05Through Plinth

    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.

    On method. Every financial figure here is read from IRS e-file XML, the funder’s own 990/990-PF, and from the multi-year returns of the 75 grantees we resolved, each linked to its source. Grantee outcomes are each organization’s own program-service reporting (Form 990, Part III), read as association with funding, never as caused by it. Low-confidence name matches are suppressed rather than guessed. How we build these →

    How this is measured
    Each figure carries one of six labels. Filed is what the funder reported on its return. Official is another government record about an organization, such as a federal award or a charity register, joined by name where no shared identifier exists. Resolved is an identity we worked out where the filing named a recipient without an EIN, kept only above a measured confidence threshold. Computed is arithmetic over those, like themes, portfolio clusters and co-funder strength. Context is a statistic about a place rather than about an organization, which is what the need overlay is: it describes the area a grantee’s address sits in, not where its work lands. Inferred is drawn by a model from text, like the partnerships read out of public news and organization websites. Each is labeled where it appears.

    Generated from the IRS Form 990-PF e-file return for fiscal year 2024, released 2024. Filings run roughly 12 to 24 months behind; figures are dated accordingly.

    Source object · view filing

    Play a game based on Treeline’s filings →

    More from the funding graph