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 |
|---|---|---|---|---|
| 8-K | Major company event | 3y ago2023-04-25 | 2023-04-25 | View filing |
| 8-K | Major company event | 3y ago2023-04-18 | 2023-04-12 | View filing |
| 4 | Insider trade | 3y ago2023-04-06 | 2023-04-04 | View filing |
| 144 | Insider sale notice | 3y ago2023-04-04 | - | View filing |
| 4 | Insider trade | 3y ago2023-04-04 | 2023-03-31 | View filing |
| 4 | Insider trade | 3y ago2023-03-30 | 2023-03-28 | View filing |
| 144 | Insider sale notice | 3y ago2023-03-28 | - | View filing |
| 8-K | Major company event | 3y ago2023-03-09 | 2023-03-05 | View filing |
| 4 | Insider trade | 3y ago2023-03-06 | 2023-03-02 | View filing |
| 4 | Insider trade | 3y ago2023-02-22 | 2023-02-17 | View filing |
| 4 | Insider trade | 3y ago2023-02-22 | 2023-02-17 | View filing |
| 4 | Insider trade | 3y ago2023-02-22 | 2023-02-17 | View filing |
| 4 | Insider trade | 3y ago2023-02-22 | 2023-02-17 | View filing |
| 4 | Insider trade | 3y ago2023-02-22 | 2023-02-17 | View filing |
| 4 | Insider trade | 3y ago2023-02-22 | 2023-02-17 | View filing |
| 4 | Insider trade | 3y ago2023-02-22 | 2023-02-17 | View filing |
| 10-K | Annual report | 3y ago2023-02-15 | 2022-12-31 | View filing |
| 8-K | Major company event | 3y ago2023-02-15 | 2023-02-15 | View filing |
| 4 | Insider trade | 3y ago2023-02-14 | 2023-02-10 | View filing |
| 4 | Insider trade | 3y ago2023-02-14 | 2023-02-10 | View filing |
| 4 | Insider trade | 3y ago2023-02-14 | 2023-02-10 | View filing |
| 4 | Insider trade | 3y ago2023-02-14 | 2023-02-10 | View filing |
| 4 | Insider trade | 3y ago2023-02-14 | 2023-02-10 | View filing |
| 4 | Insider trade | 3y ago2023-02-14 | 2023-02-10 | View filing |
| 4 | Insider trade | 3y ago2023-02-14 | 2023-02-10 | View filing |
| 4 | Insider trade | 3y ago2023-02-10 | 2023-02-08 | View filing |
| 4 | Insider trade | 3y ago2023-02-10 | 2023-02-08 | View filing |
| 4 | Insider trade | 3y ago2023-02-10 | 2023-02-08 | View filing |
| 4 | Insider trade | 3y ago2023-02-10 | 2023-02-08 | View filing |
| 4 | Insider trade | 3y ago2023-02-10 | 2023-02-08 | View filing |
| 4 | Insider trade | 3y ago2023-02-10 | 2023-02-08 | View filing |
| SC 13G/A | Passive ownership stake (update) | 3y ago2023-02-09 | - | View filing |
| SC 13G/A | Passive ownership stake (update) | 3y ago2023-02-09 | - | View filing |
| 4 | Insider trade | 3y ago2023-02-03 | 2023-02-01 | View filing |
| 5 | Annual insider summary | 3y ago2023-01-27 | 2022-12-31 | View filing |
| 5 | Annual insider summary | 3y ago2023-01-27 | 2022-12-31 | View filing |
| 4 | Insider trade | 3y ago2023-01-27 | 2023-01-25 | View filing |
| 4 | Insider trade | 3y ago2023-01-27 | 2023-01-25 | View filing |
| 4 | Insider trade | 3y ago2023-01-27 | 2023-01-25 | View filing |
| 4 | Insider trade | 3y ago2023-01-27 | 2023-01-25 | View filing |
| 4 | Insider trade | 3y ago2023-01-27 | 2023-01-25 | View filing |
| 4 | Insider trade | 3y ago2023-01-27 | 2023-01-25 | View filing |
| SC 13G/A | Passive ownership stake (update) | 3y ago2023-01-24 | - | View filing |
| 3 | New insider ownership | 3y ago2023-01-17 | 2023-01-05 | View filing |