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BIIB Biogen Inc. Common Stock
Insider figures are trailing 90 days, open-market Form 4 only. Institutional figures are the latest reported quarter. These windows are not simultaneous.
-$240K net selling - trailing 90 days
0 buyers - 1 unique sellers
Historical context: No open-market activity in Sep 2026 — insiders sold in 7 of the last 24 months
Institutional activity: not available - insufficient comparable institutions for the latest complete quarter.
open-market Form 4 only - grants, exercises, tax withholding excluded. ~ derived from SEC-reported shares x price.
Institutional activity: not available - insufficient comparable institutions for the latest complete quarter.
Who is responsible
| Insider | Role | Net activity | Rows |
|---|---|---|---|
| Minor Lloyd | — | -~$0.2M | 2 |
Transactions
| Date | Insider | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| August 4, 2026 | Minor Lloyd | — | S | -593 | 200.96 | ~$0.1M |
| August 3, 2026 | Minor Lloyd | — | S | -593 | 203.34 | ~$0.1M |
| February 12, 2026 | Murphy Nicole | Head of Pharm Ops and Tech | P | 3 | 195.035 | ~$1K |
| February 9, 2026 | Singhal Priya | Head of Development | S | -2660 | 199.83 | ~$0.5M |
| February 2, 2026 | Singhal Priya | Head of Development | S | -748 | 179.3 | ~$0.1M |
| September 2, 2025 | Singhal Priya | Head of Development | S | -517 | 133.55 | ~$69K |
| July 8, 2025 | Izzar Rachid | Head of Global Product Strat. | S | -2223 | 135 | ~$0.3M |
| May 19, 2025 | Singhal Priya | Head of Development | S | -3806 | 126.25 | ~$0.5M |
| May 2, 2025 | DORSA CAROLINE | — | P | 1235 | 122.72 | ~$0.2M |
| March 7, 2025 | SHERWIN STEPHEN A | — | S | -8760 | 150.0162 | ~$1.3M |
| December 9, 2024 | Singhal Priya | Head of Development | S | -110 | 157.21 | ~$17K |