Form 4 for BIIB Biogen
Accepted 2026-02-10 00:00:00 ET · period of report 2026-02-06 · accession 0000875045-26-000021 · 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| DM | 2026-02-10 | 2026-02-06 | BIIB | Kramer Robin | CFO | M - OptEx | $0.00 | +5,003 | 8,801 | +132% | $0 |
| DM | 2026-02-10 | 2026-02-06 | BIIB | Kramer Robin | CFO | F - Tax | $201.18 | -1,543 | 9,024 | -15% | -$310.4K |
| DM | 2026-02-10 | 2026-02-06 | BIIB | Kramer Robin | CFO | M - OptEx | $0.00 | -5,003 | 7,024 | -42% | $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 | 2026-02-06 | M | A | 703 | $0.00 | 9,230.75 | D | — | — | |
| 2 | Common | Common Stock | 2026-02-06 | M | A | 3,511 | $0.00 | 12,534.75 | D | — | — | |
| 3 | Common | Common Stock | 2026-02-06 | F | D | 1,063 | $201.18 | 11,471.75 | D | — | — | |
| 4 | Common | Common Stock | 2026-02-06 | F | D | 273 | $201.18 | 8,527.75 | D | — | — | |
| 5 | Common | Common Stock | 2026-02-06 | M | A | 789 | $0.00 | 8,800.75 | D | — | — | |
| 6 | Common | Common Stock | 2026-02-06 | F | D | 207 | $201.18 | 9,023.75 | D | — | — | |
| 7 | Derivative | Restricted Stock Unit | 2026-02-06 | M | D | 789 | $0.00 | 0 | D | $0.00 · — to 2026-02-08 | 789 Common Stock | (F1) The restricted stock units vest in three (3) equal annual installments commencing one year after the grant date of 02/08/2023. |
| 8 | Derivative | Restricted Stock Unit | 2026-02-06 | M | D | 703 | $0.00 | 704 | D | $0.00 · — to 2027-02-07 | 703 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. |
| 9 | Derivative | Restricted Stock Unit | 2026-02-06 | M | D | 3,511 | $0.00 | 7,024 | D | $0.00 · — to 2025-02-06 | 3,511 Common Stock | (F3) The restricted stock units vest in three equal yearly installments beginning on the first anniversary of the grant date of February 6, 2025. |