Insiders / Viehbacher Christopher
Viehbacher Christopher
CIK 1774478personinsider
Companies
1
First seen
Feb 10, 2026
Last activity
Feb 17, 2026
Companies
| Company | Shares held | Latest |
|---|---|---|
| Biogen Inc. · BIIB | 29,924 | — |
All securities held
2 positions · latest reported per filing
| Company | Security | Shares |
|---|---|---|
| Biogen Inc. | Common Stock | 29,924 |
| Biogen Inc. | Restricted Stock UnitDerivative | 38,015 |
Activity
InsidersInstitutions
This person's insider trades (Form 4), across every company.| Date | Action | Company | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|
| Feb 6, 2026 | Other | BIIB Biogen Inc. Common Stock | $1.33M | -7K -18.12% | 29,924 0.02% of shares | low |
| Feb 6, 2026 | Other | BIIB Biogen Inc. Common Stock | $876.3K | -4K -17.12% | 21,095 0.01% of shares | low |
| Feb 6, 2026 | Exercise | BIIB Biogen Inc. Common Stock | $0 | +15K +73.25% | 36,548 0.02% of shares | low |
| Feb 6, 2026 | Exercise | BIIB Biogen Inc. Common Stock | $0 | +9K +54.78% | 25,451 0.02% of shares | low |
| Feb 13, 2026 | Grant | BIIB Biogen Inc. Restricted Stock Unit | — | +38K | 38,015 0.03% of shares | low |
| Feb 6, 2026 | Exercise | BIIB Biogen Inc. Restricted Stock Unit | — | -15K -33.33% | 30,907 0.02% of shares | low |
| Feb 6, 2026 | Exercise | BIIB Biogen Inc. Restricted Stock Unit | — | -9K -50.00% | 9,009 <0.01% of shares | low |