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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 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 18, 2004

Biogen Idec Inc.

(Exact name of registrant as specified in its charter)
         
Delaware   0-19311   33-0112644
(State or other jurisdiction
of incorporation)
  (Commission
File Number)
  (I.R.S. Employer
Identification No.)
         
14 Cambridge Center, Cambridge, Massachusetts   02142
(Address of principal executive offices)   (Zip Code)

Registrant’s telephone number, including area code: (617) 679-2000

Not Applicable

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

     
o
  Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
 
   
o
  Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
 
   
o
  Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
 
   
o
  Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))



 


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ITEM 8.01 Other Events
SIGNATURES


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ITEM 8.01 Other Events

     Burt Adelman, the registrant’s Executive Vice President, Development, entered into a Rule 10b5-1 sales plan on October 18, 2004. Sales under the plan are scheduled to take place between January 1, 2005 and December 31, 2005. The maximum number of shares which can be sold under the plan is 82,000, all of which are the subject of stock options.

 


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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.

         
  Biogen Idec Inc.
 
 
Date: November 5, 2004  By:   /s/ Anne Marie Cook    
    Anne Marie Cook   
    Vice President, Chief Corporate Counsel