| SC 13G/A | 2024-02-12 | PRIMECAP MANAGEMENT CO/CA/ | BIOGEN INC. | 16,264,481 | 11.2% | EDGAR |
| SC 13G/A | 2024-02-12 | VANGUARD GROUP INC | BIOGEN INC. | 14,406,879 | 9.9% | EDGAR |
| SC 13G/A | 2024-02-12 | VANGUARD GROUP INC | BIOGEN INC. | 14,521,342 | 10.0% | EDGAR |
| SC 13G/A | 2024-02-12 | BIOGEN INC. | Denali Therapeutics Inc. | 12,751,365 | - | EDGAR |
| SC 13G/A | 2024-02-12 | BIOGEN INC. | SANGAMO THERAPEUTICS, INC | 14,652,466 | 1.0% | EDGAR |
| SC 13G/A | 2024-01-24 | BlackRock Inc. | BIOGEN INC. | 14,246,320 | 9.8% | EDGAR |
| SC 13D/A | 2023-09-28 | BIOGEN INC. | REATA PHARMACEUTICALS INC | 0 | 0.0% | EDGAR |
| SC 13D | 2023-08-07 | BIOGEN INC. | REATA PHARMACEUTICALS INC | 8,936,791 | 23.4% | EDGAR |
| SC 13G/A | 2023-02-09 | PRIMECAP MANAGEMENT CO/CA/ | BIOGEN INC. | 15,700,576 | 10.9% | EDGAR |
| SC 13G/A | 2023-02-09 | VANGUARD GROUP INC | BIOGEN INC. | 11,976,623 | 8.3% | EDGAR |
| SC 13G/A | 2023-01-24 | BlackRock Inc. | BIOGEN INC. | 14,260,137 | 9.9% | EDGAR |
| SC 13G/A | 2022-03-07 | BlackRock Inc. | BIOGEN INC. | 13,736,954 | 9.4% | EDGAR |
| SC 13G/A | 2022-02-10 | PRIMECAP MANAGEMENT CO/CA/ | BIOGEN INC. | 15,757,405 | 10.7% | EDGAR |
| SC 13G/A | 2022-02-09 | VANGUARD GROUP INC | BIOGEN INC. | 11,537,299 | 7.8% | EDGAR |
| SC 13G | 2022-02-08 | BlackRock Inc. | BIOGEN INC. | 13,736,954 | 9.4% | EDGAR |
| SC 13G/A | 2021-02-12 | PRIMECAP MANAGEMENT CO/CA/ | BIOGEN INC. | 15,822,066 | 10.3% | EDGAR |
| SC 13G/A | 2021-02-10 | VANGUARD GROUP INC | BIOGEN INC. | 11,896,510 | 7.7% | EDGAR |
| SC 13G/A | 2021-01-29 | BlackRock Inc. | BIOGEN INC. | 13,419,601 | 8.7% | EDGAR |
| SC 13G | 2021-01-11 | BIOGEN INC. | Sage Therapeutics, Inc. | 6,241,473 | 10.7% | EDGAR |
| SC 13G/A | 2020-12-09 | PRIMECAP MANAGEMENT CO/CA/ | BIOGEN INC. | 15,887,379 | 10.3% | EDGAR |