Form 4 for BIIB Biogen
Accepted 2026-02-10 00:00:00 ET · period of report 2026-02-06 · accession 0000875045-26-000020 · 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 | Keeney Adam | Head of Corp. Development | F - Tax | $201.18 | -1,583 | 3,597 | -31% | -$318.5K |
| DM | 2026-02-10 | 2026-02-06 | BIIB | Keeney Adam | Head of Corp. Development | M - OptEx | $0.00 | +5,080 | 4,186 | New | $0 |
| DM | 2026-02-10 | 2026-02-06 | BIIB | Keeney Adam | Head of Corp. Development | M - OptEx | $0.00 | -5,080 | 6,557 | -44% | $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 | F | D | 994 | $201.18 | 5,881 | D | — | — | |
| 2 | Common | Common Stock | 2026-02-06 | M | A | 3,278 | $0.00 | 6,875 | D | — | — | |
| 3 | Common | Common Stock | 2026-02-06 | M | A | 1,802 | $0.00 | 4,186 | D | — | — | |
| 4 | Common | Common Stock | 2026-02-06 | F | D | 589 | $201.18 | 3,597 | D | — | — | |
| 5 | Derivative | Restricted Stock Unit | 2026-02-06 | M | D | 1,802 | $0.00 | 1,802 | D | $0.00 · — to 2027-02-07 | 1,802 Common Stock | (F1) The restricted stock units vest in three (3) equal annual installments, commencing one year after the grant date of 02/07/2024. |
| 6 | Derivative | Restricted Stock Unit | 2026-02-06 | M | D | 3,278 | $0.00 | 6,557 | D | $0.00 · — to 2028-02-06 | 3,278 Common Stock | (F2) The restricted stock units vest in three equal yearly installments beginning on the first anniversary of the grant date of February 6, 2025. |