T-REX is more than just a cool workspace.

T‐REX is a non-profit startup incubator & world-class venue providing the early-stage entrepreneur with low cost & flexible enterprise space, while serving the region with quality programming and inspiring community. Six years after its inception, T-REX continues to grow, with plans to activate additional space and support more entrepreneurs in the eight-story Lammert Building on Washington Avenue in downtown St. Louis. It is now home to over 200 companies, including more than 180 startups. The T-REX community also includes several in-house entrepreneur support organizatons, including Arch Grants, Cultivation Capital, iTEN, Missouri Small Business Technology Development Center, Veterans Business Resource Center, Stadia Ventures, SixThirty, SixThirty Cyber, and the Midwest Cyber Center.

Our Goal:

To increase the vitality of the regional economy by recruiting and nurturing startup companies that advance technological development, encourage creative thinking through design and employ highly skilled workers that will contribute to the economic development of St. Louis.  This goal would not be possible without the help of our sponsors, which you can see here.
total jobs created in St. Louis (since 2011)
total annual economic output (USD)

Our mission is to foster the St. Louis startup community by:


Providing facilities to entrepreneurs to allow them to reduce risks, lower capital and operating costs and to assist with their early success.


Creating and welcoming programming that encourages entrepreneurship, innovation and business creativity.


Having accelerators, mentors, universities, business resources and government assisted programs in close proximity to early stage companies.

"T-REX's name comes from our first location, the Railway Exchange. When Downtown STL, the Regional Chamber and City of St. Louis came together to form the Technology Entrepreneur Center (T.E.C.) they made their first home at the Old Railway Exchange on Olive. Put them together: TEC + Railway Ex = T-REX!"

− Fun Fact #13

"The Lammert Building, T-REX's home was once the famous Lammert Furniture Company, and is one of the oldest buildings in Downtown St. Louis."

− Fun Fact #37

"There are T-REX heads and faces painted onto old paintings that are scattered throughout the walls of the Lammert Building."

− Fun Fact #1007