107 filings
POS AM
BIIB
Biogen Inc
6 Jul 22
Prospectus update (post-effective amendment)
4:05pm
424B3
BIIB
Biogen Inc
26 May 22
Prospectus supplement
4:36pm
S-4
BIIB
Biogen Inc
Registration of securities issued in business combination transactions
17 May 22
5:30pm
424B2
BIIB
Biogen Inc
28 Apr 20
Prospectus for primary offering
4:21pm
FWP
BIIB
Biogen Inc
28 Apr 20
Free writing prospectus
12:00am
424B2
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27 Apr 20
Prospectus for primary offering
8:29am
S-3ASR
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24 Apr 20
Automatic shelf registration
8:28am
S-8
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16 Jun 17
Registration of securities for employees
12:00am
FWP
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11 Sep 15
Free writing prospectus
12:00am
424B2
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11 Sep 15
Prospectus for primary offering
12:00am
424B2
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10 Sep 15
Prospectus for primary offering
12:00am
S-3ASR
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8 Sep 15
Automatic shelf registration
12:00am
S-8
7xubs3cvrynmg
26 Jun 15
Registration of securities for employees
12:00am
S-8
cjxo3pnifkak6ai473lc
26 Oct 10
Registration of securities for employees
12:00am
SC TO-T/A
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17 Dec 09
Third party tender offer statement (amended)
12:00am
SC TO-T/A
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15 Dec 09
Third party tender offer statement (amended)
12:00am
SC TO-T/A
sahb2zb4i78l55
11 Dec 09
Third party tender offer statement (amended)
12:00am
SC TO-T/A
l6ruxrk3j0bw1zpp34
3 Dec 09
Third party tender offer statement (amended)
12:00am
SC TO-T/A
yzl0zkggr0c3lhx
16 Oct 09
Third party tender offer statement (amended)
12:00am
SC TO-T/A
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7 Oct 09
Third party tender offer statement (amended)
12:00am