Surmodics (SRDX) 10-Q 2003 Q2 Quarterly report

EXHIBIT 99.1

CERTIFICATION PURSUANT TO
18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

     In connection with the Quarterly Report of SurModics, Inc. (the “Company”) on Form 10-Q for the quarter ended March 31, 2003 as filed with the Securities and Exchange Commission (the “Report”), I, Dale R. Olseth, Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. §1350, as adopted pursuant to §906 of the Sarbanes-Oxley Act of 2002, that:

     (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.

     Dated: May 14, 2003

/s/ Dale R. Olseth
Dale R. Olseth
Chief Executive Officer

A signed original of this written statement required by Section 906 has been provided to SurModics, Inc. and will be retained by SurModics, Inc. and furnished to the Securities and Exchange Commission or its staff upon written request.

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