BIOGEN INC. (BIIB) Form 8-K Material Events
BIOGEN INC. (BIIB) is a publicly traded company on the Nasdaq, categorized under SIC 2836 (Biological Products, (No Diagnostic Substances)). Access real-time SEC filings, 10-K annual reports, 10-Q quarterlies, 8-K current reports, PCAOB auditor history, and executive compensation disclosures.
Ticker: BIIB
CIK: 875045
Exchange: Nasdaq
SIC 2836: Biological Products, (No Diagnostic Substances)
Fiscal Year End: 12/31
State: DE
Independent PCAOB Auditor
Explore PCAOB Audit Intelligence →
Audit Firm
PricewaterhouseCoopers LLP
Auditor SinceSince 12/31/2016 12:00:00 AM
Lead Engagement PartnerKevin Burney
Audit LocationBoston, Massachusetts, United States
Latest SEC EDGAR Filings
Showing 10-K, 10-Q, 8-K, Form 4, and other SEC submissions| Form | Filing Date | Reporting Period | Description | Accession Number | Actions |
|---|---|---|---|---|---|
| 4 | 2026-10-05 | 2026-10-01 | PRIMARY DOCUMENT | 0000875045-26-000084 | View SEC Doc Filr Page |
| 4 | 2026-09-03 | 2026-09-01 | PRIMARY DOCUMENT | 0000875045-26-000082 | View SEC Doc Filr Page |
| 3 | 2026-08-12 | 2026-08-03 | PRIMARY DOCUMENT | 0000875045-26-000080 | View SEC Doc Filr Page |
| SCHEDULE 13G/A | 2026-08-06 | — | SCHEDULE 13G/A Filing | 0000315066-26-001959 | View SEC Doc Filr Page |
| 4 | 2026-08-05 | 2026-08-03 | PRIMARY DOCUMENT | 0000875045-26-000076 | View SEC Doc Filr Page |
| 144 | 2026-08-04 | — | 144 Filing | 0001959173-26-005582 | View SEC Doc Filr Page |
| 144 | 2026-08-03 | — | 144 Filing | 0001959173-26-005518 | View SEC Doc Filr Page |
| 10-Q | 2026-07-29 | 2026-06-30 | 10-Q | 0000875045-26-000075 | View SEC Doc Filr Page |
| 8-K | 2026-07-29 | 2026-07-29 | 8-K | 0000875045-26-000073 | View SEC Doc Filr Page |
| 8-K | 2026-07-01 | 2026-07-01 | 8-K | 0000875045-26-000068 | View SEC Doc Filr Page |
| 4 | 2026-06-11 | 2026-06-09 | PRIMARY DOCUMENT | 0000875045-26-000065 | View SEC Doc Filr Page |
| 4 | 2026-06-11 | 2026-06-09 | PRIMARY DOCUMENT | 0000875045-26-000064 | View SEC Doc Filr Page |
| 4 | 2026-06-11 | 2026-06-09 | PRIMARY DOCUMENT | 0000875045-26-000063 | View SEC Doc Filr Page |
| 4 | 2026-06-11 | 2026-06-09 | PRIMARY DOCUMENT | 0000875045-26-000062 | View SEC Doc Filr Page |
| 4 | 2026-06-11 | 2026-06-09 | PRIMARY DOCUMENT | 0000875045-26-000060 | View SEC Doc Filr Page |
| 4 | 2026-06-11 | 2026-06-09 | PRIMARY DOCUMENT | 0000875045-26-000059 | View SEC Doc Filr Page |
| 4 | 2026-06-11 | 2026-06-09 | PRIMARY DOCUMENT | 0000875045-26-000055 | View SEC Doc Filr Page |
| 4 | 2026-06-11 | 2026-06-09 | PRIMARY DOCUMENT | 0000875045-26-000054 | View SEC Doc Filr Page |
| 4 | 2026-06-11 | 2026-06-09 | PRIMARY DOCUMENT | 0000875045-26-000052 | View SEC Doc Filr Page |
| 8-K | 2026-06-10 | 2026-06-09 | CURRENT REPORT | 0000950157-26-000700 | View SEC Doc Filr Page |
| 8-K/A | 2026-06-10 | 2026-05-14 | CURRENT REPORT | 0000950157-26-000699 | View SEC Doc Filr Page |
| SCHEDULE 13G/A | 2026-06-05 | — | SCHEDULE 13G/A Filing | 0000315066-26-001417 | View SEC Doc Filr Page |
| SCHEDULE 13D/A | 2026-05-14 | — | SCHEDULE 13D/A Filing | 0000950157-26-000611 | View SEC Doc Filr Page |
| 8-K | 2026-05-14 | 2026-05-14 | 8-K | 0001193125-26-222908 | View SEC Doc Filr Page |
| SC TO-T/A | 2026-05-14 | — | SC TO-T/A | 0001193125-26-222837 | View SEC Doc Filr Page |