# 350 Seattle

Business profile: public business information with links to supporting state records. Data as of October 16, 2026.

- Legal business name: 350 Seattle
- Alternative and DBA names: 350 Seattle, Corporation
- Entity type: Nonprofit
- Original incorporation date: October 28, 2013
- Time in business: 12 years and 11 months
- Jurisdiction count: 2

## All known addresses

- 600 1st Ave, Seattle, WA 98104 (listed in Washington)
- 5031 University Way NE, Seattle, WA 98105 (listed in Indiana)

## Registered states

- [Indiana](https://index.baselayer.com/in/ce5f73a7d71df8cd): Foreign registration, as 350 Seattle, Corporation
- [Washington](https://index.baselayer.com/wa/999b47de47924470): Domestic registration

Source: public state registration records. Missing values are not a negative finding.

Cite as: Baselayer Business Index (https://index.baselayer.com/business/999b47de47924470)