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                             Prospectus Supplement to Prospectus dated September
                             27, 2000, File No. 333-45406 Filed Pursuant to Rule
                             424(b)(3)

                       ILLINOIS SUPERCONDUCTOR CORPORATION

                                   SUPPLEMENT
                                       TO
                       PROSPECTUS DATED SEPTEMBER 27, 2000

     This is a Supplement to Illinois Superconductor Corporation's Prospectus,
dated September 27, 2000 (the "Prospectus"), with respect to the offer and sale
of up to 3,440,526 shares of Common Stock, including preferred stock purchase
rights, of Illinois Superconductor Corporation. This Supplement amends and
supplements certain information contained in the Prospectus. We encourage you to
read this Supplement carefully.

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     NEITHER THE SECURITIES AND EXCHANGE COMMISSION NOR ANY STATE SECURITIES
COMMISSIONER HAS APPROVED OR DISAPPROVED OF THE SHARES OF ILLINOIS
SUPERCONDUCTOR CORPORATION COMMON STOCK TO BE ISSUED UNDER THIS SUPPLEMENT AND
THE PROSPECTUS OR DETERMINED IF THIS SUPPLEMENT OR THE PROSPECTUS IS TRUTHFUL OR
COMPLETE. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.

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                THE DATE OF THIS SUPPLEMENT IS DECEMBER 27, 2000.

CURRENT REPORT ON FORM 8-K

     On December 27, 2000, the Company filed a Current Report on Form 8-K
reporting that the Company had issued a press release announcing its acquisition
of certain assets related to the Adaptive Notch Filtering ("ANF") business unit
of Lockheed Martin Canada, Inc. ("LMC"), in exchange for 2,500,000 shares of
common stock of the Company, pursuant to a Transaction Agreement dated as of
November 1, 2000, and the appointment of Daniel Spoor, President and Chief
Executive Officer of Lockheed Martin Canada Inc., to the Company's Board of
Directors.

     The Company hereby incorporates by reference into this Supplement and the
Prospectus the Current Report on Form 8-K filed December 27, 2000.

     A copy of the Company's Current Report on Form 8-K filed December 27, 2000
is being provided to you along with this Supplement.

Information about documents that have been incorporated by reference into the
Prospectus is included in the section of the Prospectus captioned "Where You Can
Find More Information."