Form 4 for BIIB Biogen
Accepted 2026-02-03 00:00:00 ET · period of report 2026-01-30 · accession 0000875045-26-000007 · 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 | 2026-02-03 | 2026-01-30 | BIIB | Singhal Priya | Head of Development | F - Tax | $179.89 | -582 | 7,019 | -8% | -$104.7K |
| D | 2026-02-03 | 2026-02-02 | BIIB | Singhal Priya | Head of Development | S - Sale+OE | $179.30 | -748 | 6,271 | -11% | -$134.1K |
| D | 2026-02-03 | 2026-01-30 | BIIB | Singhal Priya | Head of Development | M - OptEx | $0.00 | +1,829 | 7,601 | +32% | $0 |
| D | 2026-02-03 | 2026-01-30 | BIIB | Singhal Priya | Head of Development | M - OptEx | $0.00 | -1,829 | 0 | -100% | $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 | 2026-01-30 | F | D | 582 | $179.89 | 7,019.14 | D | — | — | |
| 2 | Common | Common Stock | 2026-02-02 | S | D | 748 | $179.30 | 6,271.14 | D | — | — | |
| 3 | Common | Common Stock | 2026-01-30 | M | A | 1,829 | $0.00 | 7,601.14 | D | — | — | |
| 4 | Derivative | Restricted Stock Unit | 2026-01-30 | M | D | 1,829 | $0.00 | 0 | D | $0.00 · — to 2026-02-01 | 1,829 Common Stock | (F1) This award was granted to the reporting person on February 1, 2023 and will vest in three equal installments on each anniversary of the grant date. |