Mailing Address

Sightline Institute
1402 3rd Avenue Suite 500
Seattle, WA 98101

Sightline Institute is a tax exempt organization located in Seattle, Washington. Donations to Sightline Institute are tax deductible. This organization has been in operation for 25 years, which makes it slightly younger than other nonprofits in the state. Sightline Institute has significantly larger assets when compared to other nonprofits in Washington. This organization last reported to the IRS significantly more income than average compared to other nonprofits in Washington.

Classification and Focus

EIN
52-1833599
Organization Code
Code 1: Corporation
Deductibility Code
Code 1: Contributions are deductible.
Affiliation Code
Code 3: Independent
Subsection and Classification Codes
  • Code 03-2: Educational organization - 501(c)(3)
Activity Codes
  • Code 124: Study and research (non-scientific)
NTEE Common Code
Code C: Environmental Quality, Protection and Beautification
NTEE Code
Code C00: Environmental Quality, Protection and Beautification
Foundation Code
Code 00: All organizations except 501(c)(3)
Exempt Organization Status Code
Code 01: Unconditional Exemption

Financials

Ruling Date
1998-06-01
Accounting Month
December
2013 Income
$2,219,792
Total Assets
$2,677,165
Form 990 Revenue Amount
$1,888,451
Filing Requirement Code
Code 01: 990 (all other) or 990EZ return
PF Filing Requirement Code
Code 0: No 990-PF return