John O'Brien

Managing Director, Senior Sales Trader



Mr. O'Brien is a Managing Director, Senior Sales Trader for ROTH MKM. Before ROTH Capital Partners' acquisition in 2023, he joined MKM Partners in 2006 to open and run the Cleveland office. In 2014, he was appointed Head of the West Coast to develop MKM Partner's institutional research, sales, and trading product offerings on the West Coast. Before joining MKM Partner, he was a Managing Director at Keybanc Capital Markets and Head of Sales Trading from 2003 to 2006. From 1999 to 2003, he was Sr. V.P. of Sales Trading for Keybanc, managing their west coast trading operations. From 1993 to 1999, he was an OTC market maker for Legg Mason and Everen Securities.

Mr. O'Brien received his B.S. in Finance from Georgetown University.


Joined Roth

February 2023


B.S. from Georgetown University