Form 424B2 - Prospectus [Rule 424(b)(2)]:
SEC Accession No. 0001193125-25-115583
Filing Date
2025-05-08
Accepted
2025-05-08 09:07:22
Documents
15

Document Format Files

Seq Description Document Type Size
1 424B2 d889472d424b2.htm 424B2 491412
2 EX-FILING FEES d889472dexfilingfees.htm   iXBRL EX-FILING FEES 53274
3 GRAPHIC g889472g99n01.jpg GRAPHIC 39598
4 GRAPHIC g947116g03g03.jpg GRAPHIC 37417
  Complete submission text file 0001193125-25-115583.txt   797313

Data Files

Seq Description Document Type Size
18 EXTRACTED XBRL INSTANCE DOCUMENT d889472dexfilingfees_htm.xml XML 10403
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: 424B2 | Act: 33 | File No.: 333-286915 | Film No.: 25924152
SIC: 2836 Biological Products, (No Diagnostic Substances)
(CF Office: 03 Life Sciences)