MarketPeel
Insider Trading Intelligence
Head of Development
Fri, Jan 30, 2026
Jan 30
sold $104.70k of BIIB
582 shares @ $179.89
Decreased holdings by -7.70%
Net across this filing: +8.60% (+499 shares)
15th largest trade (out of 80)
Tax WithholdingCluster Buy
Trade made by an officer
Part of a cluster of 2 transactions by 2 insiders
Shares withheld by the issuer to cover taxes on vesting — not a market sale
Net holdings across this filing: +8.6% (+499 shares)
Price 23% above 200-day moving average
BIIBBIOGEN INC.
Health CareBiotechnology
1D0.00%
1W+5.59%
1M+12.05%
3M
6M
1Y

Recent insider activity at BIIB

FREE · DAILY · 6 AM ET

One short email. Insider buys, congressional trades, and plain-English analysis.

Feedback