Form 4 for BIIB Biogen
Accepted 2025-09-02 00:00:00 ET · period of report 2025-08-29 · accession 0001127602-25-021083 · 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 | 2025-09-02 | 2025-08-29 | BIIB | Singhal Priya | Head of Development | F - Tax | $132.22 | -807 | 6,289 | -11% | -$106.7K |
| D | 2025-09-02 | 2025-08-29 | BIIB | Singhal Priya | Head of Development | M - OptEx | $0.00 | +1,669 | 7,096 | +31% | $0 |
| D | 2025-09-02 | 2025-09-02 | BIIB | Singhal Priya | Head of Development | S - Sale+OE | $133.55 | -517 | 5,772 | -8% | -$69.0K |
| D | 2025-09-02 | 2025-08-29 | BIIB | Singhal Priya | Head of Development | M - OptEx | $0.00 | -1,669 | 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 | 2025-08-29 | F | D | 807 | $132.22 | 6,289.14 | D | — | — | |
| 2 | Common | Common Stock | 2025-08-29 | M | A | 1,669 | $0.00 | 7,096.14 | D | — | — | |
| 3 | Common | Common Stock | 2025-09-02 | S | D | 517 | $133.55 | 5,772.14 | D | — | — | |
| 4 | Derivative | Restricted Stock Unit | 2025-08-29 | M | D | 1,669 | $0.00 | 0 | D | $0.00 · — to 2025-09-01 | 1,669 Common Stock | (F1) This award was granted to the reporting person on September 1, 2022 and will vest in three equal installments on each anniversary of the grant date. |