Form 4 - Statement of changes in beneficial ownership of securities:
SEC Accession No. 0000875045-25-000052
Filing Date
2025-12-03
Accepted
2025-12-03 16:42:56
Documents
1
Period of Report
2025-12-01

Document Format Files

Seq Description Document Type Size
1 PRIMARY DOCUMENT form4.html 4  
1 PRIMARY DOCUMENT form4.xml 4 6717
  Complete submission text file 0000875045-25-000052.txt   8433
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)

EIN.: 330112644 | State of Incorp.: DE | Fiscal Year End: 1231
SIC: 2836 Biological Products, (No Diagnostic Substances)
(CF Office: 03 Life Sciences)

Mailing Address C/O AXCELLA HEALTH, INC. 840 MEMORIAL DRIVE CAMBRIDGE MA 02139
Business Address
Viehbacher Christopher (Reporting) CIK: 0001774478 (see all company filings)

Type: 4 | Act: 34 | File No.: 000-19311 | Film No.: 251547040