William Brennan

Chief Financial Officer


In his role as Chief Financial Officer, Bill focuses on driving the financial health of Apex as well as identifying the right processes to ensure operational alignment across the firm and deliver superior service to Apex clients.


Prior to joining Apex, Bill was Chief Operating Officer at Prophecy Asset Management, LLC. Before that he served as Managing Director and Global Co-Head of Clearing for Goldman Sachs where he was responsible for infrastructure and financial management as well as building out an international clearing platform. Prior to joining Goldman Sachs, Bill served as Chief Financial Officer at First Options of Chicago, Inc.

Bill graduated from the University of Illinois with a B.S. in Accounting. He became a C.P.A. in 1989 and received his J.D. from IIT-Chicago Kent College of Law in 1995.


In his free time, Bill indulges his love of classic television and finding new genres of music.

“Be kind to the people you meet on the way up, because you’re gonna meet the same people on the way down.”

  Wilson Mizner