================================================================================ SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 --------------- AMENDMENT NO. 3 TO SCHEDULE 14D-9 (RULE 14d-101) SOLICITATION/RECOMMENDATION STATEMENT UNDER SECTION 14(d)(4) OF THE SECURITIES EXCHANGE ACT OF 1934 MERCATOR SOFTWARE, INC. (Name of Subject Company) MERCATOR SOFTWARE, INC. (Name of Person(s) Filing Statement) COMMON STOCK, PAR VALUE $0.01 PER SHARE (INCLUDING THE ASSOCIATED PREFERRED STOCK PURCHASE RIGHTS) (Title of Class of Securities) 587587106 (CUSIP Number of Class of Securities) --------------- ROY C. KING CHAIRMAN, CHIEF EXECUTIVE OFFICER AND PRESIDENT MERCATOR SOFTWARE, INC. 45 DANBURY ROAD WILTON, CT 06897 TELEPHONE: (203) 761-8600 (Name, address and telephone number of person authorized to receive notice and communication on behalf of the person(s) filing statement) Copy to: MICHAEL WEINSIER, ESQ. CHARLES A. SAMUELSON, ESQ. JENKENS & GILCHRIST PARKER CHAPIN LLP 405 LEXINGTON AVENUE NEW YORK, NY 10174 TELEPHONE: (212) 704-6000 |_| Check the box if the filing relates solely to preliminary communications made before the commencement of a tender offer. ================================================================================ This Amendment No. 3 to Schedule 14D-9 amends and supplements the Schedule 14D-9 initially filed by Mercator Software, Inc., a Delaware corporation ("Mercator"), with the Securities and Exchange Commission on August 8, 2003 (the "Initial Filing") relating to a tender offer commenced by Greek Acquisition Corporation, a Delaware corporation and a wholly-owned subsidiary of Ascential Software Corporation, a Delaware corporation, on August 8, 2003 to purchase all of the outstanding shares of Mercator's common stock, par value $0.01 per share, together with the associated preferred stock purchase rights. Mercator amended the initial filing on August 19, 2003 (the "First Amendment") and August 26, 2003 (the "Second Amendment"). The Initial Filing, as amended by the First Amendment and the Second Amendment is referred to as the "Schedule 14D-9." Capitalized terms used but not defined herein have the meanings assigned to them in the Schedule 14D-9. The information in the Schedule 14D-9 is hereby expressly incorporated herein by reference, except as otherwise set forth below. ITEM 9. EXHIBITS Item 9 of Schedule 14D-9 is hereby amended and supplemented by adding the following exhibits (filed herewith): EXHIBIT NO. DESCRIPTION ----------- ----------- (e)(16) e-mail sent to Mercator's employees on September 9, 2003 regarding extension of the tender offer (e)(17) Press release issued by Ascential on September 9, 2003 (incorporated by reference to Exhibit (a)(1)(P) of the Schedule TO) 1 SIGNATURE After due inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct. Dated: September 9, 2003 MERCATOR SOFTWARE, INC. By: /s/ Roy C. King --------------------------------- Roy C. King Chairman of the Board of Directors, Chief Executive Officer and President