Form 8-K - Current report:
SEC Accession No. 0001193125-25-117854
Filing Date
2025-05-12
Accepted
2025-05-12 16:45:12
Documents
17
Period of Report
2025-05-06
Items
Item 8.01: Other Events
Item 9.01: Financial Statements and Exhibits

Document Format Files

Seq Description Document Type Size
1 8-K d13940d8k.htm   iXBRL 8-K 29116
2 EX-1.1 d13940dex11.htm EX-1.1 142682
3 EX-4.2 d13940dex42.htm EX-4.2 181287
4 EX-5.1 d13940dex51.htm EX-5.1 9429
8 GRAPHIC g13940g0508072051097.jpg GRAPHIC 4136
  Complete submission text file 0001193125-25-117854.txt   560441

Data Files

Seq Description Document Type Size
5 XBRL TAXONOMY EXTENSION SCHEMA biib-20250506.xsd EX-101.SCH 2860
6 XBRL TAXONOMY EXTENSION LABEL LINKBASE biib-20250506_lab.xml EX-101.LAB 17236
7 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE biib-20250506_pre.xml EX-101.PRE 10819
19 EXTRACTED XBRL INSTANCE DOCUMENT d13940d8k_htm.xml XML 3477
Mailing Address 225 BINNEY STREET CAMBRIDGE MA 02142
Business Address 225 BINNEY STREET CAMBRIDGE MA 02142 7814642000
BIOGEN INC. (Filer) CIK: 0000875045 (see all company filings)

EIN.: 330112644 | State of Incorp.: DE | Fiscal Year End: 1231
Type: 8-K | Act: 34 | File No.: 000-19311 | Film No.: 25935594
SIC: 2836 Biological Products, (No Diagnostic Substances)
(CF Office: 03 Life Sciences)