BIOGEN INC. — 4 Filings
1,542 4 filings on record
This page lists all 4 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 1,542 4 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 |
|---|---|---|---|---|
| 4 | PRIMARY DOCUMENT | 0000875045-26-000029 | Feb 17, 2026 | Feb 13, 2026 |
| 4 | PRIMARY DOCUMENT | 0000875045-26-000030 | Feb 17, 2026 | Feb 13, 2026 |
| 4 | PRIMARY DOCUMENT | 0000875045-26-000032 | Feb 17, 2026 | Feb 13, 2026 |
| 4 | PRIMARY DOCUMENT | 0000875045-26-000035 | Feb 17, 2026 | Feb 13, 2026 |
| 4 | PRIMARY DOCUMENT | 0000875045-26-000031 | Feb 17, 2026 | Feb 13, 2026 |
| 4 | PRIMARY DOCUMENT | 0000875045-26-000033 | Feb 17, 2026 | Feb 12, 2026 |
| 4 | PRIMARY DOCUMENT | 0000875045-26-000034 | Feb 17, 2026 | Feb 13, 2026 |
| 4 | PRIMARY DOCUMENT | 0000875045-26-000026 | Feb 17, 2026 | Feb 13, 2026 |
| 4 | PRIMARY DOCUMENT | 0000875045-26-000027 | Feb 17, 2026 | Feb 13, 2026 |
| 4 | PRIMARY DOCUMENT | 0000875045-26-000028 | Feb 17, 2026 | Feb 13, 2026 |
| 4 | PRIMARY DOCUMENT | 0000875045-26-000021 | Feb 10, 2026 | Feb 6, 2026 |
| 4 | PRIMARY DOCUMENT | 0000875045-26-000022 | Feb 10, 2026 | Feb 6, 2026 |
| 4 | PRIMARY DOCUMENT | 0000875045-26-000023 | Feb 10, 2026 | Feb 6, 2026 |
| 4 | PRIMARY DOCUMENT | 0000875045-26-000020 | Feb 10, 2026 | Feb 6, 2026 |
| 4 | PRIMARY DOCUMENT | 0000875045-26-000015 | Feb 10, 2026 | Feb 6, 2026 |
| 4 | PRIMARY DOCUMENT | 0000875045-26-000019 | Feb 10, 2026 | Feb 6, 2026 |
| 4 | PRIMARY DOCUMENT | 0000875045-26-000016 | Feb 10, 2026 | Feb 6, 2026 |
| 4 | PRIMARY DOCUMENT | 0000875045-26-000017 | Feb 10, 2026 | Feb 6, 2026 |
| 4 | PRIMARY DOCUMENT | 0000875045-26-000018 | Feb 10, 2026 | Feb 6, 2026 |
| 4 | PRIMARY DOCUMENT | 0000875045-26-000024 | Feb 10, 2026 | Feb 6, 2026 |
| 4 | PRIMARY DOCUMENT | 0000875045-26-000007 | Feb 3, 2026 | Jan 30, 2026 |
| 4 | PRIMARY DOCUMENT | 0000875045-25-000052 | Dec 3, 2025 | Dec 1, 2025 |
| 4 | PRIMARY DOCUMENT | 0000875045-25-000051 | Nov 4, 2025 | Oct 31, 2025 |
| 4 | PRIMARY DOCUMENT | 0000875045-25-000037 | Oct 6, 2025 | Oct 2, 2025 |
| 4 | PRIMARY DOCUMENT | 0001127602-25-021083 | Sep 2, 2025 | Aug 29, 2025 |
| 4 | PRIMARY DOCUMENT | 0001127602-25-019295 | Jul 16, 2025 | Jul 8, 2025 |
| 4 | PRIMARY DOCUMENT | 0001127602-25-017763 | Jun 18, 2025 | Jun 17, 2025 |
| 4 | PRIMARY DOCUMENT | 0001127602-25-017765 | Jun 18, 2025 | Jun 17, 2025 |
| 4 | PRIMARY DOCUMENT | 0001127602-25-017766 | Jun 18, 2025 | Jun 17, 2025 |
| 4 | PRIMARY DOCUMENT | 0001127602-25-017762 | Jun 18, 2025 | Jun 17, 2025 |
| 4 | PRIMARY DOCUMENT | 0001127602-25-017761 | Jun 18, 2025 | Jun 17, 2025 |
| 4 | PRIMARY DOCUMENT | 0001127602-25-017756 | Jun 18, 2025 | Jun 17, 2025 |
| 4 | PRIMARY DOCUMENT | 0001127602-25-017767 | Jun 18, 2025 | Jun 17, 2025 |
| 4 | PRIMARY DOCUMENT | 0001127602-25-017758 | Jun 18, 2025 | Jun 17, 2025 |
| 4 | PRIMARY DOCUMENT | 0001127602-25-017759 | Jun 18, 2025 | Jun 17, 2025 |
| 4 | PRIMARY DOCUMENT | 0001127602-25-017760 | Jun 18, 2025 | Jun 17, 2025 |
| 4 | PRIMARY DOCUMENT | 0001127602-25-015011 | May 20, 2025 | May 19, 2025 |
| 4 | PRIMARY DOCUMENT | 0001127602-25-013345 | May 5, 2025 | May 2, 2025 |
| 4 | PRIMARY DOCUMENT | 0001127602-25-013346 | May 5, 2025 | May 1, 2025 |
| 4 | PRIMARY DOCUMENT | 0001127602-25-011365 | Apr 3, 2025 | Apr 1, 2025 |
| 4 | PRIMARY DOCUMENT | 0001127602-25-008861 | Mar 10, 2025 | Mar 7, 2025 |
| 4 | PRIMARY DOCUMENT | 0001127602-25-004452 | Feb 12, 2025 | Feb 10, 2025 |
| 4 | PRIMARY DOCUMENT | 0001127602-25-004462 | Feb 12, 2025 | Feb 10, 2025 |
| 4 | PRIMARY DOCUMENT | 0001127602-25-004454 | Feb 12, 2025 | Feb 10, 2025 |
| 4 | PRIMARY DOCUMENT | 0001127602-25-004456 | Feb 12, 2025 | Feb 10, 2025 |
| 4 | PRIMARY DOCUMENT | 0001127602-25-004457 | Feb 12, 2025 | Feb 10, 2025 |
| 4 | PRIMARY DOCUMENT | 0001127602-25-004459 | Feb 12, 2025 | Feb 10, 2025 |
| 4 | PRIMARY DOCUMENT | 0001127602-25-004461 | Feb 12, 2025 | Feb 10, 2025 |
| 4 | PRIMARY DOCUMENT | 0001127602-25-004243 | Feb 11, 2025 | Feb 7, 2025 |
| 4 | PRIMARY DOCUMENT | 0001127602-25-003964 | Feb 10, 2025 | Feb 7, 2025 |