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Form SC 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend]
SEC Accession No. 0001047469-03-013002
Filing Date
2003-04-11
Accepted
2003-04-10 19:56:14
Documents
1

Document Format Files

Seq Description Document Type Size
1 SC 13G/A a2108026zsc13ga.htm SC 13G/A 20769
  Complete submission text file 0001047469-03-013002.txt   22746
Mailing Address 14 CAMBRIDGE CTR CAMBRIDGE MA 02142
Business Address 14 CAMBRIDGE CTR CAMBRIDGE MA 02142 6176792000
BIOGEN INC (Subject) CIK: 0000714655 (see all company filings)

IRS No.: 043002117 | State of Incorp.: MA | Fiscal Year End: 1231
Type: SC 13G/A | Act: 34 | File No.: 005-35348 | Film No.: 03646211
SIC: 2836 Biological Products, (No Diagnostic Substances)

Mailing Address 225 SOUTH LAKE AVE SUITE 400 PASADENA CA 91101
Business Address 225 SOUTH LAKE AVE STE 400 PASADENA CA 91101-3005 8183049222
PRIMECAP MANAGEMENT CO/CA/ (Filed by) CIK: 0000763212 (see all company filings)

IRS No.: 953868081