<Page> Filed pursuant to Rule 424(b)(3) Registration Statement No. 333-62762 PROSPECTUS SUPPLEMENT DATED OCTOBER 19, 2001 (TO PROSPECTUS DATED JULY 27, 2001) 800,306 SHARES OF COMMON STOCK INTRADO INC. ----------------------------------------- You should read this prospectus supplement and the accompanying prospectus carefully before you invest. Both documents contain information you should consider when making your investment decision. SEE "RISK FACTORS" BEGINNING ON PAGE 2 OF THE PROSPECTUS TO READ ABOUT FACTORS YOU SHOULD CONSIDER BEFORE BUYING SHARES OF OUR COMMON STOCK. SELLING STOCKHOLDERS The following table updates information contained in the prospectus, dated July 27, 2001, regarding the security holders that may use this prospectus to sell their common stock. <Table> <Caption> Number of Shares Which Shares Owned After Shares Owned May be Sold Offering (1) Before the Pursuant to this ---------------------------- Selling Stockholders Offering Prospectus Number Percentage ------------------------------------------ ----------------- ----------------- ---------- ------------- RS Investment Management Co. LLC 632,111 632,111 -0- -0- Alan Budd Zuckerman 86,664 86,664 -0- -0- First Union International Capital Markets, Ltd. 30,800 30,800 -0- -0- Thomas W. Schneider 1,850 1,850 -0- -0- Floyd Murray LLC 720 720 -0- -0- Keith A. Koch 537 537 -0- -0- Thomas J. O'Rourke 404 404 -0- -0- Siegfried P. Duray-Bito 300 300 -0- -0- Sherry L. Andersen 300 300 -0- -0- Jay A. Murray 270 270 -0- -0- Richard J. Rouse 210 210 -0- -0- J. Patrick Driver 150 150 -0- -0- Bathgate McColley Capital Group LLC 7,500 7,500 -0- -0- Cynthia Cox 1,700 1,700 -0- -0- Leopard Communications 36,590 36,590 -0- -0- </Table> ------------------------------------------ (1) Assumes all shares offered are sold. Except as otherwise noted, neither the selling stockholders, nor their officers, directors and major shareholders, has held any material relationship with Intrado or any of our affiliates within the past three years other than as an owner of our securities. <Page> GENERAL You should rely only on the information provided or incorporated by reference in this prospectus supplement or in the accompanying prospectus. We have not authorized anyone else to provide you with different information. You should not assume that the information in this prospectus supplement or in the accompanying prospectus is accurate as of any date other than the date on the front of these documents. NEITHER THE SECURITIES AND EXCHANGE COMMISSION NOR ANY OTHER REGULATORY BODY HAS APPROVED OR DISAPPROVED OF THESE SECURITIES OR PASSED UPON THE ACCURACY OR ADEQUACY OF THIS PROSPECTUS SUPPLEMENT OR THE ACCOMPANYING PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE. The date of this Prospectus Supplement is October 19, 2001.