EXHIBIT 99.1




                               CAMBREX CORPORATION
     CERTIFICATION PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002
                            (18 U.S.C. SECTION 1350)



Pursuant to the requirements of Section 906 of the Sarbanes-Oxley Act of 2002
(18 U.S.C. Sections 1350 (a) and (b)), the undersigned hereby certifies as
follows:


     1.   James A. Mack is the President, Chairman of the Board and Chief
          Executive Officer of Cambrex Corporation, and is a member of the
          Benefits Administration Committee of the Cambrex Corporation Savings
          Plan (the "Plan").

     2.   The undersigned certifies:

               a. The Plan's Form 11K for the annual period ended December 31,
               2002, accompanying this Certification, in the form filed with the
               Securities and Exchange Commission (the "Report") fully complies
               with the requirements of Section 15(d) of the Securities Exchange
               Act of 1934 and

               b. The information in the Report fairly presents, in all material
               respects, the financial condition and results of operations of
               the Plan.




Dated:  June 30, 2003

                                    /s/ James A. Mack
                                    -------------------------------------------
                                    James A. Mack, President
                                    Chairman of the Board and
                                    Chief Executive Officer

                                    On behalf of the Benefits Administration
                                    Committee of the Cambrex Corporation Savings
                                    Plan





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