Foundation profile
Treeline Foundation
Private foundation · Seattle, WA
Invitation only
Grants (last 3 years)
44
Total given (last 3 years)
$1.1M
Median grant
$20k
Range
$3.3k – $110k
Giving by year
Total grants paid per tax year, as reported to the IRS.
Where the money goes
Causes
Pollution control · 17%Natural resources · 16%Environment · 11%Environmental education · 10%Human services · 4%
States
WashingtonCaliforniaOregonMassachusettsNew York
How to apply, full grant list and leadership
Contacts, deadlines, restrictions, openness to new grantees and every grant this foundation made.
Start free trial Log inFree for 7 days, then $69/month. Cancel anytime before October 12, 2026 and you won't be charged.
Source: IRS Form 990-PF / 990 Schedule I filings. Not affiliated with the IRS. About the data