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, Steven E. Zuccarini, 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, 2006 (the “Form 10-Q”) fully complies with the requirements of Section 13(a) of the Securities Exchange Act of 1934, as amended; and
(2) The information contained in the Form 10-Q fairly presents, in all material aspects, the financial condition and results of operations of the Company.
/s/ Steven E. Zuccarini |
| Steven E. Zuccarini |
| Chief Executive Officer |
| November 14, 2006 |