UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. Date of Report (Date of earliest event reported): OCTOBER 26, 1999 -------------------- QUIDEL CORPORATION (Exact Name of Registrant as Specified in its Charter) Commission file number 0-10961 ------- DELAWARE 94-2573850 (State or other jurisdiction of (I.R.S. Employer incorporation or organization) Identification Number) 10165 MCKELLAR COURT, SAN DIEGO, CA 92121 (Address of Principal Executive Offices) TELEPHONE (858) 552-1100 (Registrant's Telephone Number, Including Area Code) QUIDEL CORPORATION FORM 8-K CURRENT REPORT TABLE OF CONTENTS PAGE ---- Item 8. Change in Fiscal Year 3 Signature 4 ITEM 8. CHANGE IN FISCAL YEAR - ------------------------------ Quidel Corporation is filing this report on Form 8-K to report a change in fiscal year from a March 31 fiscal year to a December 31 fiscal year. The Company will report the transition period on a Form 10-K for the nine months ended December 31, 1999. In addition, the Company will also report on a Form 10-K the financial statements for the twelve months ended December 31, 1999. SIGNATURE Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. QUIDEL CORPORATION Date: November 10, 1999 /s/ Charles J. Cashion ----------------- ---------------------- Charles J. Cashion Senior Vice President, Corporate Operations, Chief Financial Officer and Secretary