St. Louis Arch Angels – Startup Investor Profile

St. Louis Arch Angels is an angel investment network based in Saint Louis, MO. They focus on seed to later stage equity investments, particularly in areas like Medical Device. With a history of over 64 investments and 4 exits, they typically invest in startups in the range of 1-5 million dollars. The network partners with local businesses to provide valuable insights and support to the start-ups they mentor.

Location: Saint Louis, MO

Country: United States of America

Investment Regions:

Investment Stages: pre-seed, seed

Website: www.stlouisarchangels.com

AI Reasoning: Search results show St. Louis Arch Angels participated in a $2.25M seed round for Maximum Fidelity Surgical Simulations (MaxFi), reported August 1, 2024. From that date to the reference date is less than 15 months, but classification thresholds: less than 6 months -> very-active; 6-12 months -> active; over 12 months -> low-active. However the latest known investment was Aug 1, 2024 which is 15 months prior, which would normally be low-active. Additional sources (Tracxn) indicate a latest investment on Jul 9, 2024 in MaxFi, still over 15 months prior. But there is more recent activity referenced in Tracxn as of Jul 2025 saying latest was Jul 9, 2024. No investments found in past 12 months. Therefore correct tag is low-active.

Low Activity – Only known angel investments more than 12 months ago.

Active – Known angel investments between the last 12 and 6 months.

Very Active – Known angel investments in the last 6 months.