EXHIBIT 32.1 STATEMENT FURNISHED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002, 18 U.S.C. SECTION 1350 The undersigned, James L. Brissenden, is the President and Chief Executive Officer of INFICON Holding AG (the "Company"). This statement is being furnished in connection with the submission by the Company of the Company's Report on Form 6-K on or about November 14, 2003 (the "Report"). By execution of this statement, I certify that: (A) the Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 (15 U.S.C. 78m(a) and 78o(d)) and (B) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company. It is not intended that this statement be deemed to be filed for purposes of the Securities Exchange Act of 1934. Date: November 14, 2003 By: /s/ James L. Brissenden ----------------------------------- James L. Brissenden President and Chief Executive Officer - 28 -