================================================================================ UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K/A (Amendment No. 1) FOR ANNUAL AND TRANSITION REPORTS PURSUANT TO SECTIONS 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 [X] ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE FISCAL YEAR ENDED DECEMBER 31, 2006 [ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM _________________ TO __________________ COMMISSION FILE NUMBER 1-10235 IDEX CORPORATION (Exact Name of Registrant as Specified in its Charter) DELAWARE 36-3555336 (State or other jurisdiction of (I.R.S. Employer incorporation or organization) Identification No.) 630 DUNDEE ROAD, NORTHBROOK, ILLINOIS 60062 (Address of principal executive offices) (Zip Code) Registrant's telephone number: (847) 498-7070 SECURITIES REGISTERED PURSUANT TO SECTION 12(b) OF THE ACT: TITLE OF EACH CLASS NAME OF EACH EXCHANGE ON WHICH REGISTERED ------------------- ----------------------------------------- COMMON STOCK, NEW YORK STOCK EXCHANGE PAR VALUE $.01 PER SHARE AND CHICAGO STOCK EXCHANGE SECURITIES REGISTERED PURSUANT TO SECTION 12(g) OF THE ACT: NONE Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes [X] No [ ] Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes [ ] No [X] Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes [X] No [ ] Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of registrant's knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K. [X] Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer or a non-accelerated filer. See definition of "accelerated filer and large accelerated filer" in Rule 12b-2 of the Exchange Act. Large accelerated filer [X] Accelerated filer [ ] Non-accelerated filer [ ] Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act). Yes [ ] No [X] The aggregate market value of the voting stock (based on the June 30, 2006 closing price of $47.20) held by non-affiliates of IDEX Corporation was $2,495,689,616. The number of shares outstanding of IDEX Corporation's common stock, par value $.01 per share (the "Common Stock"), as of February 15, 2007 was 53,823,941 (net of treasury shares). DOCUMENTS INCORPORATED BY REFERENCE None ================================================================================ EXPLANATORY NOTE This Amendment No. 1 to the Company's Annual Report on Form 10K for the year ended December 31, 2006 is being filed to amend Exhibit 13 to include language required by the New York Stock Exchange certification disclosures. As such, we have filed the following exhibits herewith: 13 The portions of IDEX Corporation's 2006 Annual Report to Shareholders, which are specifically incorporated by reference 31.1 Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 31.2 Certification of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 Except as described above, no other changes have been made to the original filing and this Form 10-K/A does not amend, update or change the financial statements or any other items or disclosures in the original filing. SIGNATURES Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. IDEX CORPORATION By: /s/ DOMINIC A. ROMEO ------------------------------------------ Dominic A. Romeo Vice President and Chief Financial Officer Date: May 1, 2007 2