EXHIBIT 99 CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER AND PRINCIPAL FINANCIAL OFFICER PURSUANT TO 18 U.S.C. 1350 In connection with the Form 10-Q (the "Report") of Ferro Corporation (the "Company") [Name of Report] [Name of Company] for the period ending March 31, 2003, I, Hector R. Ortino, Chairman and [Date] [Name of Officer] Chief Executive Officer of the Company, certify that: [Title] (1) The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and (2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company. /s/ Hector R. Ortino - ------------------------------------ Hector R. Ortino Chairman and Chief Executive Officer Dated: May 14, 2003 --------------------------- 24 Exhibit 99 CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER AND PRINCIPAL FINANCIAL OFFICER PURSUANT TO 18 U.S.C. 1350 In connection with the Form 10-Q (the "Report") of Ferro Corporation (the "Company") [Name of Report] [Name of Company] for the period ending March 31, 2003, I, J. William Heitman, Vice President, Finance and Acting Chief Financial Officer, certify that : [Date] [Name of Officer] [Title] (1) The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and (2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company. /s/ J. William Heitman - --------------------------------------------- J. William Heitman Vice President, Finance and Acting Chief Financial Officer Dated: May 14, 2003 --------------------------- 25