VANGUARD GROUP INC 13D and 13G filings for Biogen Inc.:
- Schedule 13D must be filed within ten days after a person or an organization acquires beneficial ownership of more than 5% of a voting class of a company's equity securities.
- Shares have been adjusted for stock splits.
| Reported DateTime | Transaction Date | Type | Company Symbol | Filed By Symbol | Shares Owned % Owned | Shares Vs. Prev Report | View |
| 2024-11-12 1:24 pm Unchanged | 2024-09-30 | 13G | Biogen Inc. BIIB | VANGUARD GROUP INC | 16,677,806 11.440% | 0 (Unchanged) | Filing |
| 2024-11-04 11:20 am Purchase | 2024-09-30 | 13G | Biogen Inc. BIIB | VANGUARD GROUP INC | 16,677,806 11.440% | 2,156,464 (+14.85%) | Filing |
| 2024-02-12 11:21 am Purchase | 2024-01-31 | 13G | Biogen Inc. BIIB | VANGUARD GROUP INC | 14,521,342 10.020% | 114,463 (+0.79%) | Filing |
| 2024-02-12 10:50 am Purchase | 2023-12-29 | 13G | Biogen Inc. BIIB | VANGUARD GROUP INC | 14,406,879 9.940% | 2,430,256 (+20.29%) | Filing |
| 2023-02-09 11:12 am Purchase | 2022-12-30 | 13G | Biogen Inc. BIIB | VANGUARD GROUP INC | 11,976,623 8.320% | 439,324 (+3.81%) | Filing |
| 2022-02-09 3:33 pm Sale | 2021-12-31 | 13G | Biogen Inc. BIIB | VANGUARD GROUP INC | 11,537,299 7.850% | -359,211 (-3.02%) | Filing |
| 2021-02-10 10:39 am Sale | 2020-12-31 | 13G | Biogen Inc. BIIB | VANGUARD GROUP INC | 11,896,510 7.730% | -1,974,028 (-14.23%) | Filing |