# 121 First Street LLC

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

- Legal business name: 121 First Street LLC
- Entity type: LLC
- Original incorporation date: April 5, 2013
- Time in business: 13 years and 6 months
- Jurisdiction count: 1

## All known addresses

- 111 1st St, Cambridge, MA 02141 (listed in Massachusetts)

## Registered states

- [Massachusetts](https://index.baselayer.com/ma/8934d950bb662e57): Domestic registration

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

Cite as: Baselayer Business Index (https://index.baselayer.com/business/8934d950bb662e57)