Stephen Marcus

Riot Ventures Management LLC (Riot Ventures) is a venture capital firm founded in 2017 by Stephen Marcus. The firm is headquartered in Venice, California.

Usable Machines, Inc. provides AI integration tools to automate workflow and secure data for businesses. The American company's IT security offers the latest AI capabilities while maintaining security, support, and cost control over models. The company's accessible artificial intelligence allows users to use integrated AI machines to get instant solutions to repeated queries and questions. The company was founded by Bryan Vann, Margaret Jennings, and Ron Williams, with Ron Williams serving as CEO since incorporation.

Shield AI, Inc. designs, develops, and builds artificial intelligence products for the U.S. national security sector and first responders. It works with special operations forces and other department of defense units to deliver next generation intelligence, reconnaissance, and surveillance systems. The company was founded by Ryan Tseng, Andrew Reiter and Brandon Tseng in May 2015 and is headquartered in San Diego, CA.

NAV Management LLC (NAV Management) is a venture capital firm founded in 1999 by John Backus, Thanasis Delistathis, Todd Hixon and Scott Johnson. The firm is headquartered in Reston, Virginia.