Home Countries United States Environment The Mountains to Sound Greenway Tr
The Mountains to Sound Greenway Tr logo

The Mountains to Sound Greenway Tr

The mountains to sound greenway trust leads and inspires action to conserve and enhance the landscape of the mountains to sound greenway, ensuring a long-term balance between people …

Environment Seattle, WA EIN: 911531234 (IRS) Reg: 91-1531234 (IRS) Sign up to see website
Claim this charity
Ready to give?
100% goes to The Mountains to Sound Greenway Tr

GiveRadar doesn't take a cut. Donate directly on their site.

Make your donation
80
Integrity Assessment
Strong transparency
80/100 · methodology

About The Mountains to Sound Greenway Tr

Our work endeavors to enhance a geographic corridor of connected ecosystems and communities spanning 1.5 million acres from Seattle to Ellensburg.

Founded
Headquarters
Seattle, WA
Foundation type
Publicly-supported charity (509(a)(2))
NTEE code
C300
IRS subsection
501(c)(03)
Ruling date
Size
large

Verified certifications

Confirmed against the issuing authority - not self-reported.

IRS Tax-Deductible since 1996

Mission

The mountains to sound greenway trust leads and inspires action to conserve and enhance the landscape of the mountains to sound greenway, ensuring a long-term balance between people and nature.

Focus areas & reach

· What they work on and where

How it stacks up against peers

· vs. 8 similar environment in United States
Program spending This charity: 84%
Peer average: 78%
CEO comp as % of revenue This charity: 4.32%
Peer average: 0.48%
Integrity Assessment This charity: 80
Peer average: 90

Concerns

· None found
No red flags found
Screened for IRS revocation history, Open investigations, Governance scandals, Related-party deals, Excessive exec comp.

Where every $1 goes

· FY2024 · IRS 990 (FY2024)
$0.84
Program$0.84
84% to programs beats the peer average (78%) and beats the Charity Navigator "highly efficient" threshold (75%).

GiveRadar Analysis

Original analysis from GiveRadar's dataset of comparable organizations

GiveRadar's verified records show The Mountains to Sound Greenway Tr with a complete profile, sourced from the IRS.

  • GiveRadar has verified more about this organization than about 90% of the 30,143 environment charities in the United States it tracks, because GiveRadar has verified its financial disclosures and its governance. Most of those have little verified data on record yet. View this cohort
  • It has more complete contact information than nearly all comparable charities, with a verified website, email, phone and address on record. See national comparisons
  • By reported annual revenue, it is larger than 77% of the 13,369 environment charities in the United States with financial records on GiveRadar. See the filings
GiveRadar has verified
  • government registration
  • financial records (5 filed years)
  • disclosed leadership
  • a website
  • a contact email
  • a donation page
Not yet verified by GiveRadar
  • an owner-submitted profile claim

Analysis based on GiveRadar's benchmark dataset of 2026-07-03. It describes what GiveRadar has verified, not a judgment of the organization itself.

Common questions

· Auto-generated from filings + methodology

The Mountains to Sound Greenway Tr is a registered environment nonprofit based in Seattle, WA, United States. It is registered with the Internal Revenue Service (IRS). It was founded in 1991 and has been operating for 35 years. Its EIN is 911531234. According to GiveRadar's records, it holds active tax-deductible status on the IRS Publication 78 list, which means donations are tax-deductible and the organization is in good standing with the IRS. GiveRadar's Integrity Assessment for the organization is 80/100, which reflects how much public information is available, not whether the charity is legitimate. The organization reports $4M in annual revenue. 256 officers and directors are publicly disclosed. No red flags have been detected.

The Mountains to Sound Greenway Tr's EIN (Employer Identification Number) is 911531234. This is the organization's IRS tax identification number; you can use it to verify tax-exempt status and to look up its Form 990 filings with the IRS.

The Mountains to Sound Greenway Tr has a GiveRadar Integrity Assessment of 80/100. This score combines five components: Registration (20 pts), Financial Transparency (30 pts), Governance (20 pts), Contact Availability (10 pts), and Data Recency (20 pts), with negative adjustments for any red flags. A score of 80 ('Strong transparency') reflects well-documented governance, recent financials, named leadership, and working contact details. The charity allocates 84% of expenses to programs, which contributes positively to its score. For comparison, the average integrity assessment for environment charities in United States is 90/100.

The Mountains to Sound Greenway Tr is located in Seattle, WA, United States. The organization was established in 1991 and has been active for 35 years.

Based on official tax filings, The Mountains to Sound Greenway Tr has $4M in annual revenue. It allocates 84% of expenses to programs and services. This is above the average of 78% for environment charities in United States. Create a free GiveRadar account to view the complete financial breakdown with year-over-year trends.

The Mountains to Sound Greenway Tr is classified as an Environment organization, registered in United States. It operates as a Publicly-supported charity (509(a)(2)). By size, it is categorized as a large organization. It has $4M in annual revenue. The organization has 256 disclosed officers and directors.

No red flags have been detected for The Mountains to Sound Greenway Tr. GiveRadar automatically screens charities for concerning patterns including high executive compensation, low program spending, and missing financial filings. Based on available official data, no issues have been identified.

According to GiveRadar's records, The Mountains to Sound Greenway Tr holds active tax-deductible status on the IRS Publication 78 list, which means donations are tax-deductible and the organization is in good standing with the IRS. It is registered with the Internal Revenue Service (IRS). It reports that 84% of expenses go to programs (the peer average is 78%). You can donate directly through their official donation page linked on their GiveRadar profile. GiveRadar provides data for research and does not endorse any organization. A GiveRadar Integrity Assessment reflects how much public data is available, not whether an organization is safe to donate to, so it is always smart to do your own research before giving.

Our work endeavors to enhance a geographic corridor of connected ecosystems and communities spanning 1.5 million acres from Seattle to Ellensburg. The Mountains to Sound Greenway Tr is classified as an environment organization registered in United States. The organization was founded in 1991.

Among environment charities registered in United States: It allocates 84% of expenses to programs, above the peer average of 78%. Its annual revenue of $4M is comparable to the peer average of $2M.

Yes, donations to The Mountains to Sound Greenway Tr are generally tax-deductible in the United States. The Mountains to Sound Greenway Tr is a 501(c)(3) tax-exempt organization. Its EIN is 911531234, which you can use for tax filing purposes. Donors can typically deduct contributions on their federal income tax return if they itemize deductions. Consult a tax professional for guidance specific to your situation.

Annual revenue
$1M-$10M
84% to programs
Source: IRS 990 (FY2024) why this matters
Unlock exact figures

Filing history

5 years on file from IRS 990 (FY2024): revenue, expenses, program spending, assets, and liabilities by fiscal year.

Years on record: FY2024, FY2023, FY2022, FY2021, FY2020.
Financial details are free - with a GiveRadar account

See 5 years of revenue, expense breakdowns, and balance sheet.

Sign up to view
Already have an account? Log in
No credit card · Takes 20 seconds

Taxes

Tax-deductibility for donors

Donations may be tax-deductible for residents of United States under local rules. Confirm with the charity directly.

Always confirm tax treatment with the charity directly or your tax advisor before donating.

Staff & volunteers

From filings and published profiles

Employees
38

Leadership

From FY2024 filing

JO
Jon H•••••••
Executive Director

Officers & trustees (25)

Source: Public filings

See full names, roles, and stories

25 officers and trustees on file - free with a GiveRadar account.

Already have an account? Log in
Sign up to view

Latest news

From global news sources

No recent news coverage found

News coverage will appear here when articles mention this organization.

Activity timeline

Filings and press mentions, merged

Form filed
$3.6M revenue
FY2024
IRS 990
Form filed
$5.6M revenue
FY2023
IRS 990
Form filed
$3.7M revenue
FY2022
IRS 990
Form filed
$3.3M revenue
FY2021
IRS 990
Form filed
$2.5M revenue
FY2020
IRS 990

No reviews yet. Be the first to share your experience.

Have you donated or volunteered here?

Share your experience - it takes 30 seconds. Verified reviews help other donors decide.

Sign up to write a review

Cause areas in United States

How many charities work in each area, with this charity's area highlighted.

Human Services 322,679
Education 195,586
Arts & Culture 133,128
Advocacy & Civil Rights 128,026
Religion 114,636
Health 98,862
Community Development 56,086
Youth Development 53,450
Environment this charity 30,143
See all cause areas in United States

Most common causes in United States

Causes charities work on most.

Community Development 235,146
Education 159,016
Religion 103,741
Arts & Culture 101,203
Human Rights 76,926
Health 65,250
Youth Development 47,775
Animal Welfare 32,425

Sources and verification

Registration and legal identity
Internal Revenue Service (IRS) - Tax Exempt Organization Search
Financial filings
IRS Form 990 filings - Fiscal year 2024 most recent on file.
Officers and trustees
Internal Revenue Service (IRS) - Tax Exempt Organization Search - 256 disclosed in the public registry.

Data freshness

Last updated
Jun 12, 2026
Registry checked
Jun 6, 2026
Profile completeness
90%

What we know and don't know

Exactly which public data we hold on this charity. Our score reflects transparency, not impact.

On record · 10
  • Financial data · FY2024 on record
  • Named leadership · 256 officers on file
  • Executive pay · Disclosed
  • Government registration · Registered with an official registry
  • Mission statement · Published
  • Official website · On record
  • Headquarters address · On file
  • Direct contact · Email or phone published
  • Tax-deductibility · Verified
  • Founding date · 1991
Not available · 1
  • Programs & activities
    No named programs listed by the charity

Methodology

GiveRadar builds each profile primarily from official government charity registries, supplemented where available by third-party nonprofit databases and news archives, and combines it into a single 0-100 integrity assessment. The exact sources for this charity are listed above. We don't take a cut of any donation, ever.

Read full methodology

Are you the owner or a board member?

If you represent this organization and want to correct or update its data, you can claim this listing to edit details yourself, or email [email protected] with the correct information. We review every request and respond within 30 days.

Quick facts about The Mountains to Sound Greenway Tr

What is The Mountains to Sound Greenway Tr?
The Mountains to Sound Greenway Tr is a environment publicly-supported charity (509(a)(2)) based in Seattle, United States. Our work endeavors to enhance a geographic corridor of connected ecosystems and communities spanning 1.5 million acres from Seattle to Ellensburg.
When was The Mountains to Sound Greenway Tr founded?
The Mountains to Sound Greenway Tr was founded in 1991.
Who leads The Mountains to Sound Greenway Tr?
Jon Hoekstra serves as Executive Director.
Where is The Mountains to Sound Greenway Tr located?
Headquartered in Seattle, WA, United States.
What is The Mountains to Sound Greenway Tr's annual budget?
Annual revenue for fiscal year 2024 is approximately $1M-$10M. 84% of expenses go to program services.
Is The Mountains to Sound Greenway Tr trustworthy?
The Mountains to Sound Greenway Tr has a GiveRadar Integrity Assessment of 80 out of 100 (Strong transparency). The score reflects public-data transparency: registration, financial disclosure, governance, contact details, and how recently data was refreshed. It does not measure program impact.
What is The Mountains to Sound Greenway Tr's registration number?
IRS EIN: 911531234. Registration: 91-1531234 (United States).
What is The Mountains to Sound Greenway Tr's website?
http://www.mtsgreenway.org