CHICAGO--(BUSINESS WIRE)--InnerWorkings (NASDAQ: INWK), the leading global marketing execution firm, has announced Eric Belcher, Chief Executive Officer, will participate in the following investor conferences: B Riley Annual Investor ConferenceLos Angeles, CAMay 12, 2015 Barrington Spring Investment ConferenceChicago, ILMay 14, 2015 Craig Hallum Institutional Investor ConferenceMinneapolis, MNMay 27, 2015 Benchmark One-on-One ConferenceMilwaukee, WIMay 28, 2015 A live webcast of the company’s c