SEC FORM 3 SEC Form 3
FORM 3 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
 
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1. Name and Address of Reporting Person*
Gilman Michael

(Last) (First) (Middle)
14 CAMBRIDGE CENTER

(Street)
CAMBRIDGE MA 02142

(City) (State) (Zip)
2. Date of Event Requiring Statement (Month/Day/Year)
05/14/2004
3. Issuer Name and Ticker or Trading Symbol
BIOGEN IDEC INC [ BIIB ]
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director 10% Owner
X Officer (give title below) Other (specify below)
Sr. Vice President - Research
5. If Amendment, Date of Original Filed (Month/Day/Year)
6. Individual or Joint/Group Filing (Check Applicable Line)
X Form filed by One Reporting Person
Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock 8,965.7721 D
Table II - Derivative Securities Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4) 2. Date Exercisable and Expiration Date (Month/Day/Year) 3. Title and Amount of Securities Underlying Derivative Security (Instr. 4) 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 6. Nature of Indirect Beneficial Ownership (Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Stock Option (right-to-buy)(1) (2) 05/17/2009 Common Stock 44,500 44.54 D
Stock Option (right-to-buy)(1) (3) 12/09/2009 Common Stock 4,025 62.28 D
Stock Option (right-to-buy)(1) (4) 04/05/2010 Common Stock 143,750 56.77 D
Stock Option (right-to-buy)(1) (5) 04/28/2010 Common Stock 23,000 49.67 D
Stock Option (right-to-buy)(1) (6) 12/15/2010 Common Stock 28,750 45.46 D
Stock Option (right-to-buy)(1) (7) 12/14/2011 Common Stock 25,300 49.03 D
Stock Option (right-to-buy)(1) (8) 12/06/2012 Common Stock 23,287 37.45 D
Stock Option (right-to-buy)(1) (9) 02/06/2014 Common Stock 20,000 43.5 D
Explanation of Responses:
1. Granted under one of the Issuer's stock option plans, in an exempt transaction under SEC rule 16(b)-3(d).
2. The stock option became exercisable in five (5) equal annual installments, commencing one year after the grant date of 05/17/99.
3. The stock option became exercisable in five (5) equal annual installments, commencing one year after the grant date of 12/09/99.
4. The stock option became exercisable in five (5) equal annual installments, commencing one year after the grant date of 04/05/00.
5. The stock option became exercisable in five (5) equal annual installments, commencing one year after the grant date of 04/28/00.
6. The stock option became exercisable in five (5) equal annual installments, commencing one year after the grant date of 12/15/00.
7. The stock option became exercisable in four (4) equal annual installments, commencing one year after the grant date of 12/14/01.
8. The stock option became exercisable in four (4) equal annual installments, commencing one year after the grant date of 12/06/02.
9. The stock option becomes exercisable in four (4) equal annual installments on 12/31/04, 12/31/05, 12/31/06 and 12/31/07.
Remarks:
By: Benjamin S. Harshbarger For: Michael Gilman 05/20/2004
** Signature of Reporting Person Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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POWER OF ATTORNEY


I, the undersigned, a director and/or an
executive officer of Biogen Idec Inc., hereby authorize and designate
Thomas J. Bucknum, Anne Marie Cook, Jo Ann Taormina, and Benjamin S.
Harshbarger and each of them acting alone, as my attorney-in-fact to
execute and file on my behalf any and all Forms 3, 4 and 5 (including any
amendments thereto) that I may be required to file with the United States
Securities and Exchange Commission as a result of my ownership of or
transactions in securities of Biogen Idec Inc.  The authority granted under
this power of attorney shall continue for so long as I am required to file
Forms 3, 4 and 5 with regard to my ownership of or transactions in
securities of Biogen Idec Inc., unless earlier revoked in writing, but
shall terminate automatically as to each individual attorney-in-fact when
such person is no longer an employee of Biogen Idec Inc.  I acknowledge
that the attorneys-in-fact appointed hereunder are not assuming, nor is
Biogen Idec Inc. assuming, any of my responsibility to comply with Section
16 of the Securities Exchange Act of 1934.

	IN WITNESS WHEREOF, the
undersigned has caused this instrument to be duly executed this 17th day of
May, 2004.


						/s/ Michael Gilman

						Michael Gilman,
Ph.D.