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Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material:
SEC Accession No. 0001193125-23-165434
Filing Date
2023-06-12
Accepted
2023-06-12 17:18:58
Documents
2

Document Format Files

Seq Description Document Type Size
1 DEFA14A d514505ddefa14a.htm DEFA14A 20865
2 GRAPHIC g514505g0612211057848.jpg GRAPHIC 2613
  Complete submission text file 0001193125-23-165434.txt   25863
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)

IRS No.: 330112644 | State of Incorp.: DE | Fiscal Year End: 1231
Type: DEFA14A | Act: 34 | File No.: 000-19311 | Film No.: 231009353
SIC: 2836 Biological Products, (No Diagnostic Substances)