EXHIBIT 32.1
CERTIFICATION OF CHIEF EXECUTIVE OFFICER
PURSUANT TO 18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO
SECTION 906 Of THE SARBANES-OXLEY ACT OF 2002
I, Eric D. Belcher, Chief Executive Officer of InnerWorkings, Inc. (the “Company”), hereby certify, that:
(1) The Company’s quarterly report on Form 10-Q for the quarterly period ended September 30, 2010 (the “Form 10-Q”) fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and
(2) The information contained in the Form 10-Q fairly presents, in all material respects, the financial condition and results of operations of the Company.
| /s/ Eric D. Belcher | |
| Eric D. Belcher | |
| Chief Executive Officer | |
| November 5, 2010 | |
