BIIB SEC Filings
SEC filings for BIIB. Annual and quarterly reports, 8-K events,
Form 4 insider filings and 13D/G stake disclosures.
| Form | Filed | Accession |
|---|---|---|
| 10-Q | Jul 29, 2026 | 0000875045-26-000075EDGAR |
| 10-Q | Apr 29, 2026 | 0000875045-26-000045EDGAR |
| 10-Q | Oct 30, 2025 | 0000875045-25-000049EDGAR |
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Source: SEC EDGAR.