Form 4 for BIIB Biogen
Accepted 2026-02-10 00:00:00 ET · period of report 2026-02-06 · accession 0000875045-26-000022 · 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 | Murphy Nicole | Head of Pharm Ops, Tech | F - Tax | $201.18 | -3,339 | 15.3K | -18% | -$671.7K |
| DM | 2026-02-10 | 2026-02-06 | BIIB | Murphy Nicole | Head of Pharm Ops, Tech | M - OptEx | $0.00 | +8,725 | 21.0K | +71% | $0 |
| DM | 2026-02-10 | 2026-02-06 | BIIB | Murphy Nicole | Head of Pharm Ops, Tech | M - OptEx | $0.00 | -8,725 | 9,367 | -48% | $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 | 1,408 | $201.18 | 19,608.04 | D | — | — | |
| 2 | Common | Common Stock | 2026-02-06 | F | D | 914 | $201.18 | 16,333.04 | D | — | — | |
| 3 | Common | Common Stock | 2026-02-06 | M | A | 1,940 | $0.00 | 17,247.04 | D | — | — | |
| 4 | Common | Common Stock | 2026-02-06 | F | D | 1,017 | $201.18 | 15,307.04 | D | — | — | |
| 5 | Common | Common Stock | 2026-02-06 | M | A | 2,102 | $0.00 | 16,324.04 | D | — | — | (F1) Includes 166.6667 shares acquired under the Biogen Inc. employee stock purchase plan on 3/31/2025. |
| 6 | Common | Common Stock | 2026-02-06 | M | A | 4,683 | $0.00 | 21,016.04 | D | — | — | |
| 7 | Derivative | Restricted Stock Unit | 2026-02-06 | M | D | 2,102 | $0.00 | 0 | D | $0.00 · — to 2026-02-08 | 2,102 Common Stock | (F2) The restricted stock units vest in three (3) equal annual installments commencing one year after the grant date of 02/8/2023. |
| 8 | Derivative | Restricted Stock Unit | 2026-02-06 | M | D | 1,940 | $0.00 | 1,940 | D | $0.00 · — to 2027-02-07 | 1,940 Common Stock | (F3) 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 | 4,683 | $0.00 | 9,367 | D | $0.00 · — to 2028-02-06 | 4,683 Common Stock | (F4) The restricted stock units vest in three equal yearly installments beginning on the first anniversary of the grant date of February 6, 2025. |