Live feed
Filing
SCHEDULE 13G/A
SCHEDULE 13G/A0000763212-25-000007·BIOGEN INC.
Schedule 13G ownership disclosure
BIOGEN INC COM
COM · CUSIP: 09062X103
Event date: 2025-09-30
- Filing-level shares
- 14,954,697
- Percent of class
- 10.2%
- PRIMECAP MANAGEMENT CO/CA/
Shares: 14,954,697 · Class: 10.2%
Amounts are as disclosed in this filing. Schedule type alone does not establish investment intent.
Source: SEC EDGAR filingFiling metadata
- Accession number
- 0000763212-25-000007
- Form type
- SCHEDULE 13G/A
- Filer
- BIOGEN INC.
- CIK
- CIK 875045
- Filed
- Nov 13, 2025
- Reporting period
- Sep 30, 2025
- Description
- Schedule 13G beneficial ownership