# 303rd Engineering Group, LLC

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

- Legal business name: 303rd Engineering Group, LLC
- Entity type: LLC
- Original incorporation date: October 13, 2005
- Time in business: 21 years
- Jurisdiction count: 5

## All known addresses

- 1935 Arsenal St Ste 201, Saint Louis, MO 63118 (listed in Missouri)
- 1935 Arsenal St, Saint Louis, MO 63118 (listed in Montana)

## Registered states

- [Illinois](https://index.baselayer.com/il/37b6f3afa5fc170b): Foreign registration
- [Missouri](https://index.baselayer.com/mo/7a603cc6a8cd2133): Domestic registration
- [Montana](https://index.baselayer.com/mt/360f9cfb88662ce1): Foreign registration
- [Oklahoma](https://index.baselayer.com/ok/11a46fea595c5e08): Foreign registration
- [Puerto Rico](https://index.baselayer.com/pr/64d2d46893b9a276): Foreign registration

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

Cite as: Baselayer Business Index (https://index.baselayer.com/business/7a603cc6a8cd2133)