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*
KELLOGG PETER N

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

(Street)
CAMBRIDGE MA 02142

(City) (State) (Zip)
2. Date of Event Requiring Statement (Month/Day/Year)
11/12/2003
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)
EVP, CFO
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)
No Securities Beneficially owned. 0 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
Explanation of Responses:
Peter N. Kellogg 11/12/2003
** 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, Benjamin Harshbarger and Kevin M. Foley 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 12th day of November, 2003.


						/s/ Peter N. Kellogg
						(Signature)

						Peter N. Kellogg