CHICAGO--(BUSINESS WIRE)--InnerWorkings, Inc. (NASDAQ: INWK), a global marketing supply chain company, will announce its first quarter 2015 results after financial markets close on Thursday, May 7, 2015. Eric D. Belcher, Chief Executive Officer, and Ryan K. Spohn, interim Chief Financial Officer, will host a live webcast presentation on InnerWorkings' first quarter results and lead a question and answer session at 4:30 p.m. Central time (5:30 p.m. Eastern time) on Thursday, May 7, 2015. The pho