BIOGEN INC. — SC 13G/A Filings
117 SC 13G/A filings on record
This page lists all SC 13G/A filings submitted to the SEC by BIOGEN INC. (BIIB), sorted by most recent first. Each row links to the full filing on EdgarLookup. BIOGEN INC. has filed 117 SC 13G/A documents with the SEC since 2014. To view all SEC filings by BIOGEN INC., see the full filings list.
All
10-C
10-K
10-K/A
10-K405
10-K405/A
10-Q
10-Q/A
11-K
144
3
3/A
4
4/A
424B2
424B3
424B4
425
5
8-A12B
8-A12G/A
8-B12G
8-K
8-K/A
ARS
CORRESP
CT ORDER
DEF 14A
DEFA14A
DEFC14A
DEFR14A
DFAN14A
DFRN14A
EFFECT
FWP
NO ACT
NT 10-K
NT 10-Q
POS AM
POS EX
PRE 14A
PREC14A
PRER14A
PRES14A
PRRN14A
PX14A6G
RW
S-3
S-3/A
S-3ASR
S-3MEF
S-4
S-4/A
S-8
S-8 POS
SC 13D
SC 13D/A
SC 13G
SC 13G/A
SC TO-C
SC TO-I
SC TO-I/A
SC TO-T
SC TO-T/A
SCHEDULE 13D
SCHEDULE 13D/A
SCHEDULE 13G
SCHEDULE 13G/A
UPLOAD
| Form | Description | Accession Number | Filed | Period |
|---|---|---|---|---|
| SC 13G/A | — | 0000932471-24-000849 | Nov 12, 2024 | — |
| SC 13G/A | SC 13G/A | 0001193125-24-253265 | Nov 7, 2024 | — |
| SC 13G/A | — | 0000932471-24-000309 | Nov 4, 2024 | — |
| SC 13G/A | SC 13G/A | 0001193125-24-202234 | Aug 16, 2024 | — |
| SC 13G/A | — | 0001086364-24-008372 | Aug 7, 2024 | — |
| SC 13G/A | SCHEDULE 13G/A | 0001104659-24-013916 | Feb 12, 2024 | — |
| SC 13G/A | PRIMECAP MANAGEMENT CO/CA/ | 0001085146-24-001101 | Feb 12, 2024 | — |
| SC 13G/A | SC 13G/A | 0001193125-24-032402 | Feb 12, 2024 | — |
| SC 13G/A | SC 13G/A | 0001193125-24-032401 | Feb 12, 2024 | — |
| SC 13G/A | SCHEDULE 13G/A | 0001104659-24-013959 | Feb 12, 2024 | — |
| SC 13G/A | — | 0001086364-24-002278 | Jan 24, 2024 | — |
| SC 13G/A | SCHEDULE 13G/A | 0001104659-23-015459 | Feb 9, 2023 | — |
| SC 13G/A | PRIMECAP MANAGEMENT CO/CA/ | 0001085146-23-000900 | Feb 9, 2023 | — |
| SC 13G/A | — | 0001306550-23-003112 | Jan 24, 2023 | — |
| SC 13G/A | — | 0000834237-22-008773 | Mar 7, 2022 | — |
| SC 13G/A | PRIMECAP MANAGEMENT CO/CA/ | 0001085146-22-000717 | Feb 10, 2022 | — |
| SC 13G/A | SCHEDULE 13G/A | 0001104659-22-016641 | Feb 9, 2022 | — |
| SC 13G/A | SCHEDULE 13G/A | 0001104659-21-021513 | Feb 12, 2021 | — |
| SC 13G/A | SCHEDULE 13G/A | 0001104659-21-017580 | Feb 10, 2021 | — |
| SC 13G/A | — | 0000834237-21-002850 | Jan 29, 2021 | — |
| SC 13G/A | SC 13G/A | 0001104659-20-133697 | Dec 9, 2020 | — |
| SC 13G/A | SC 13G/A | 0001104659-20-019058 | Feb 12, 2020 | — |
| SC 13G/A | SCHEDULE 13G/A | 0001104659-20-018478 | Feb 12, 2020 | — |
| SC 13G/A | SC 13G/A | 0001193125-20-031460 | Feb 11, 2020 | — |
| SC 13G/A | — | 0000834237-20-004697 | Feb 5, 2020 | — |
| SC 13G/A | — | 0000932471-19-004902 | Feb 11, 2019 | — |
| SC 13G/A | SC 13G/A | 0001104659-19-006789 | Feb 8, 2019 | — |
| SC 13G/A | — | 0000215457-19-003371 | Feb 4, 2019 | — |
| SC 13G/A | — | 0000932471-18-002772 | Feb 8, 2018 | — |
| SC 13G/A | — | 0000215457-18-003877 | Jan 29, 2018 | — |
| SC 13G/A | — | 0000315066-17-001485 | Feb 14, 2017 | — |
| SC 13G/A | — | 0000932471-17-001626 | Feb 10, 2017 | — |
| SC 13G/A | — | 0000215457-17-001353 | Jan 19, 2017 | — |
| SC 13G/A | SC 13G/A | 0001104659-16-096126 | Feb 12, 2016 | — |
| SC 13G/A | — | 0000315066-16-004925 | Feb 12, 2016 | — |
| SC 13G/A | BIIB AS OF 12/31/2015 | 0000080255-16-001111 | Feb 11, 2016 | — |
| SC 13G/A | — | 0000215457-16-005475 | Feb 10, 2016 | — |
| SC 13G/A | — | 0000932471-16-010672 | Feb 10, 2016 | — |
| SC 13G/A | — | 0000315066-15-001723 | Feb 13, 2015 | — |
| SC 13G/A | SC 13G/A | 0001104659-15-010202 | Feb 13, 2015 | — |
| SC 13G/A | — | 0001086364-15-001059 | Jan 29, 2015 | — |
| SC 13G/A | — | 0000315066-14-001900 | Feb 14, 2014 | — |
| SC 13G/A | SC 13G/A | 0001104659-14-010569 | Feb 14, 2014 | — |
| SC 13G/A | — | 0000932471-14-002527 | Feb 4, 2014 | — |
| SC 13G/A | — | 0001086364-14-002019 | Feb 4, 2014 | — |
| SC 13G/A | — | 0000932471-13-004928 | Feb 14, 2013 | — |
| SC 13G/A | — | 0000315066-13-002269 | Feb 14, 2013 | — |
| SC 13G/A | SC 13G/A | 0001422848-13-000022 | Feb 12, 2013 | — |
| SC 13G/A | — | 0001305227-13-000363 | Feb 8, 2013 | — |
| SC 13G/A | — | 0000315066-12-003835 | Aug 10, 2012 | — |