Mark A. Petty

Founded in 2011, 9th Street Investments LLC is a venture capital firm located in Golden, Colorado. The firm is a non-traditional venture capital group that was born out of Coorstek, a leader advanced ceramics.

EmiSense Technologies LLC develops smart sensors for clean emissions. It offers oxygen and particulate matter sensors. The firms products include PMTrac (Particulate Matter) sensors, NOxTrac (NOx) sensors, Intake-O2 sensors, and HCTrac (Hydrocarbon) Sensors. The company was founded on October 23, 2009 and is headquartered in Ladera Ranch, CA.

CoorsTek, Inc. manufactures and markets ceramics and precision seals. It offers research and development, custom manufacturing and design assistance services. The firm serves aerospace and defense, auto and transportation, chemicals, consumer and household, electronics and energy industries. The company was founded by Adolph Coors in 1872 and is headquartered in Golden, CO.

Steelhead Composites LLC designs, manufactures, and distributes manufactures composite overwrapped pressure vessels. It offers manufacturing of aluminum cylinders, design and analysis of composite pressure vessels, advanced filament winding of composite pressure vessels, material analysis of composite materials and plastics, cycle testing, and precision 3D inspection of parts. The company was founded by Andrew Coors in October 2010 and is headquartered in Golden, CO.