BIIB Insider Activity

View recent SEC Form 4 insider transactions for BIIB, including purchases, sales, option exercises, and other insider filings.

DateInsiderTypeQuantityPriceTotal ValueShares Owned
Aug 04, 2026Minor LloydSale593$200.96$119,169.282,689
Aug 03, 2026Minor LloydSale593$203.34$120,580.623,282
Showing 2 of 2