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): DECEMBER 15, 2000 ----------------- CUBIST PHARMACEUTICALS, INC --------------------------- (Exact Name of Registrant as Specified in Charter) DELAWARE 0-21379 22-3192085 - ------------------------------------------------------------------------------- (State or Other Jurisdiction (Commission (IRS Employer of Incorporation) File Number) Identification No.) 24 EMILY STREET, CAMBRIDGE, MASSACHUSETTS 02139 -------------------------------------------------- (Address of Principal Executive Offices) (Zip Code) Registrant's telephone number, including area code: (617) 576-1999 -------------- -2- ITEM 5. OTHER EVENTS. On October 23, 2000, the Registrant completed the acquisition of TerraGen Discovery Inc. in a transaction accounted for as a pooling-of-interest. In connection therewith, Cubist hereby reports the following results for the thirty days of combined operation during the month of November 2000. Total revenues for the month ended November 30, 2000 were $379,889. Net loss for the month ended November 30, 2000 was $5,084,652. Earnings per share for the month ended November 30, 2000 was ($0.18) per share. ITEM 7. FINANCIAL STATEMENTS AND EXHIBITS. (c) EXHIBITS. None SIGNATURES 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. CUBIST PHARMACEUTICALS, INC. By: /s/ THOMAS A. SHEA ------------------------------ Thomas A. Shea, Vice President, Treasurer and Chief Financial Officer Dated: December 15, 2000