BIIBBIOGEN INC.
Insider trading & SEC Form 4 activity — last 90 days. Latest filing: 2026-10-05.
Insider buys (90d)
$0.00
Insider sells (90d)
$239.7K
Net flow
$-239.7K
Filings
2
Buy transactions
0
Sell transactions
2
Distinct insiders
2
Last close (cached)
$253.84
as of 2026-10-22
1d return
+5.3%
5d return
+7.9%
1m return
+11.6%
Top insiders trading BIIB (90d)
Recent transactions (4)
| Filed | Txn date | Insider | Code | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| 2026-10-05 | 2026-10-02 | Godbout Sean Officer | Tax | 8 | $219.88 | $1.8K | open → |
| 2026-10-05 | 2026-10-02 | Godbout Sean Officer | Exer. | 27 | $0.00 | $0.00 | open → |
| 2026-08-05 | 2026-08-04 | Minor Lloyd Director | Sale | 593 | $200.96 | $119.2K | open → |
| 2026-08-05 | 2026-08-03 | Minor Lloyd Director | Sale | 593 | $203.34 | $120.6K | open → |
Other tickers these insiders trade
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