5 results
8-K
EX-2.1
BIIB
Biogen Inc
31 Jul 23
Entry into a Material Definitive Agreement
7:00am
8-K
EX-2.1
BIIB
Biogen Inc
2 Feb 17
Entry into a Material Definitive Agreement
12:00am
8-K/A
EX-2.1
BIIB
Biogen Inc
12 Feb 13
Financial Statements and Exhibits
12:00am
8-K
EX-2.1
BIIB
Biogen Inc
23 Jun 03
Other events
12:00am
8-A12B
EX-2
BIIB
Biogen Inc
1 Aug 97
Registration of securities on exchange
12:00am
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