# Filing Detail

Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material:
SEC Accession No. 0001193125-23-165725
Filing Date
2023-06-13
Accepted
2023-06-13 07:28:28
Documents
3

Document Format Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
1 | DEFA14A | d435422ddefa14a.htm | DEFA14A | 11986
2 | GRAPHIC | g435422g55a03.jpg | GRAPHIC | 353170
3 | GRAPHIC | g435422g55a04.jpg | GRAPHIC | 431259
| Complete submission text file | 0001193125-23-165725.txt |  | 1093990

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: DEFA14A | Act: 34 | File No.: 000-19311 | Film No.: 231010239
SIC: 2836 Biological Products, (No Diagnostic Substances)