Form 4 for BIIB Biogen
Accepted 2025-02-10 00:00:00 ET · period of report 2025-02-06 · accession 0001127602-25-003962 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| D | 2025-02-10 | 2025-02-07 | BIIB | Viehbacher Christopher | Pres, CEO, Dir | F - Tax | $141.35 | -3,201 | 12.8K | -20% | -$452.5K |
| D | 2025-02-10 | 2025-02-07 | BIIB | Viehbacher Christopher | Pres, CEO, Dir | M - OptEx | $0.00 | +9,008 | 16.0K | +129% | $0 |
| D | 2025-02-10 | 2025-02-07 | BIIB | Viehbacher Christopher | Pres, CEO, Dir | M - OptEx | $0.00 | -9,008 | 18.0K | -33% | $0 |
| D | 2025-02-10 | 2025-02-06 | BIIB | Viehbacher Christopher | Pres, CEO, Dir | A - Grant | $0.00 | +46.4K | 46.4K | New | $0 |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Common Stock | 2025-02-07 | F | D | 3,201 | $141.35 | 12,807 | D | — | — | |
| 2 | Common | Common Stock | 2025-02-07 | M | A | 9,008 | $0.00 | 16,008 | D | — | — | |
| 3 | Derivative | Restricted Stock Unit | 2025-02-07 | M | D | 9,008 | $0.00 | 18,017 | D | $0.00 · — to 2027-02-07 | 9,008 Common Stock | (F2) The restricted stock units vest in three (3) equal annual installments, commencing one year after the grant date of 02/07/2024. |
| 4 | Derivative | Restricted Stock Unit | 2025-02-06 | A | A | 46,360 | $0.00 | 46,360 | D | $0.00 · — to 2028-02-06 | 46,360 Common Stock | (F1) The restricted stock units vest in three equal yearly installments beginning on the first anniversary of the grant date of February 6, 2025. |