Supplement No. 5
to
Prospectus Dated January 14, 1994
1,800,000 Shares of
Biogen, Inc.
Common Stock
($.01 par value)
This Prospectus Supplement No. 5 supplements the Prospectus
(the "Prospectus") dated January 14, 1994, included in a
Registration Statement on Form S-3, No. 33-51639, filed with
the Securities and Exchange Commission on December 21, 1993
(the "Registration Statement"). Reference is made to the
Registration Statement, the information incorporated therein
by reference and exhibits thereto for further information
with respect to the business and operations of Biogen, Inc.
and the shares of Common Stock covered by the Prospectus.
Capitalized terms not otherwise defined herein have the
meanings ascribed to them in the Prospectus.
The date of this Prospectus Supplement is
October 18, 1995
<PAGE>
Selling Stockholders
On October 18, 1995, Bear Stearns & Co., Inc. ("Bear
Stearns") purchased from the Registered Holder 100,000 of
the Shares at a net price of $59.6375. Bear Stearns will
resell the purchased Shares in any manner in which the
Registered Holder could sell such Shares pursuant to the
Prospectus. Any compensation in the form of discounts, fees
or commissions from the Registered Holder and any profits on
the sale of such Shares may be deemed underwriting discounts
and commissions.
cook.sec.prospsup5
