Stephen Lee, co-founder and partner of KLR Group LLC, is today's Thirty Under 40 honoree. Stephen helped to launch and build Houston-based KLR from scratch in 2012. Since then the company has advised and participated in more than $4 billion of capital raises and M&A assignments.

See Stephen's complete profile, including an audio interview.

Take a look at all of the Thirty Under 40 honorees.