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Form 4 - Statement of changes in beneficial ownership of securities:
SEC Accession No. 0001127602-21-006970
Filing Date
2021-02-22
Accepted
2021-02-22 16:04:29
Documents
2
Period of Report
2021-02-18

Document Format Files

Seq Description Document Type Size
1 PRIMARY DOCUMENT form4.html 4  
1 PRIMARY DOCUMENT form4.xml 4 4210
2 POWER OF ATTORNEY (PUBLIC): POWER OF ATTORNEY doc1.txt EX-24 4099
  Complete submission text file 0001127602-21-006970.txt   9941
Mailing Address 225 BINNEY STREET CAMBRIDGE MA 02142
Business Address 225 BINNEY STREET CAMBRIDGE MA 02142 7814642000
BIOGEN INC. (Issuer) CIK: 0000875045 (see all company filings)

IRS No.: 330112644 | State of Incorp.: DE | Fiscal Year End: 1231
SIC: 2836 Biological Products, (No Diagnostic Substances)

Mailing Address C/O BIOGEN IDEC INC. 14 CAMBRIDGE CENTER CAMBRIDGE MA 02142
Business Address
ALEXANDER SUSAN H (Reporting) CIK: 0001263839 (see all company filings)

Type: 4 | Act: 34 | File No.: 000-19311 | Film No.: 21660219