BIIB - Company ID 0000875045
BIOGEN INC. has filed 2,690 public company documents between 1996 and 2026. The most frequent type is insider trade (1,544 filings), alongside the regular cadence of annual reports, quarterly reports, and event disclosures every public company must make. Use the filters to focus on one filing type, or flip the sort to trace the company's history from its earliest paperwork.
Data parsed from SEC EDGAR XBRL filings. See the full market cap rankings.
| Type | Filing | Filed | Period covered | Open |
|---|---|---|---|---|
| 4 | Insider trade | 14y ago2011-12-20 | 2011-12-19 | View filing |
| 8-K | Major company event | 14y ago2011-12-19 | 2011-12-19 | View filing |
| 8-K | Major company event | 14y ago2011-12-14 | 2011-12-13 | View filing |
| 4 | Insider trade | 14y ago2011-12-08 | 2011-12-06 | View filing |
| 4 | Insider trade | 14y ago2011-12-02 | 2011-12-01 | View filing |
| 8-K | Major company event | 14y ago2011-11-29 | 2011-11-29 | View filing |
| 4 | Insider trade | 14y ago2011-11-14 | 2011-11-09 | View filing |
| 3 | New insider ownership | 14y ago2011-11-07 | 2011-11-07 | View filing |
| 4 | Insider trade | 14y ago2011-11-04 | 2011-11-02 | View filing |
| 4 | Insider trade | 14y ago2011-11-03 | 2011-11-01 | View filing |
| SC 13G/A | Passive ownership stake (update) | 14y ago2011-11-03 | - | View filing |
| 10-Q | Quarterly report | 14y ago2011-10-28 | 2011-09-30 | View filing |
| 8-K | Major company event | 14y ago2011-10-28 | 2011-10-28 | View filing |
| 4 | Insider trade | 14y ago2011-10-07 | 2011-10-05 | View filing |
| 4 | Insider trade | 14y ago2011-10-04 | 2011-10-01 | View filing |
| 4 | Insider trade | 14y ago2011-09-29 | 2011-09-27 | View filing |
| 8-K | Major company event | 14y ago2011-09-29 | 2011-09-29 | View filing |
| 4 | Insider trade | 14y ago2011-09-19 | 2011-09-16 | View filing |
| 4 | Insider trade | 14y ago2011-09-02 | 2011-09-01 | View filing |
| 4 | Insider trade | 14y ago2011-08-31 | 2011-08-29 | View filing |
| 4 | Insider trade | 14y ago2011-08-31 | 2011-08-29 | View filing |
| 4 | Insider trade | 14y ago2011-08-03 | 2011-08-01 | View filing |
| 4 | Insider trade | 14y ago2011-08-03 | 2011-08-01 | View filing |
| 10-Q | Quarterly report | 14y ago2011-07-26 | 2011-06-30 | View filing |
| 8-K | Major company event | 14y ago2011-07-26 | 2011-07-26 | View filing |
| 4 | Insider trade | 14y ago2011-07-21 | 2011-07-20 | View filing |
| 4 | Insider trade | 14y ago2011-07-19 | 2011-07-14 | View filing |
| 4 | Insider trade | 15y ago2011-07-01 | 2011-07-01 | View filing |
| 8-K | Major company event | 15y ago2011-06-24 | 2011-06-23 | View filing |
| 8-K | Major company event | 15y ago2011-06-23 | 2011-06-23 | View filing |
| SC 13D/A | Activist ownership stake (update) | 15y ago2011-06-22 | - | View filing |
| 4 | Insider trade | 15y ago2011-06-14 | 2011-06-14 | View filing |
| 8-K | Major company event | 15y ago2011-06-07 | 2011-06-01 | View filing |
| 4 | Insider trade | 15y ago2011-06-03 | 2011-06-01 | View filing |
| 4 | Insider trade | 15y ago2011-06-02 | 2011-06-01 | View filing |
| 4 | Insider trade | 15y ago2011-06-02 | 2011-06-01 | View filing |
| 4 | Insider trade | 15y ago2011-06-02 | 2011-06-01 | View filing |
| 4 | Insider trade | 15y ago2011-06-02 | 2011-06-01 | View filing |
| 4 | Insider trade | 15y ago2011-06-02 | 2011-06-01 | View filing |
| 4 | Insider trade | 15y ago2011-06-02 | 2011-06-01 | View filing |
| 4 | Insider trade | 15y ago2011-06-02 | 2011-06-01 | View filing |
| 4 | Insider trade | 15y ago2011-06-02 | 2011-06-01 | View filing |
| 4 | Insider trade | 15y ago2011-06-02 | 2011-06-01 | View filing |
| 4 | Insider trade | 15y ago2011-06-02 | 2011-06-01 | View filing |
| 4 | Insider trade | 15y ago2011-05-27 | 2011-05-25 | View filing |
| 4 | Insider trade | 15y ago2011-05-27 | 2011-05-26 | View filing |
| 4 | Insider trade | 15y ago2011-05-27 | 2011-05-26 | View filing |
| SC 13D/A | Activist ownership stake (update) | 15y ago2011-05-23 | - | View filing |
| 4 | Insider trade | 15y ago2011-05-09 | 2011-05-06 | View filing |
| 4 | Insider trade | 15y ago2011-05-04 | 2011-05-03 | View filing |