Last updated Aug 4, 2026
BIOGEN INC. (BIIB) is a publicly traded company. This page tracks every superinvestor 13F holding, congressional stock trade, and Form 4 insider transaction in BIIB. Across our datasets, 1 superinvestors hold BIIB, 2 members of Congress have traded it, and 1 insider buys are on record.
Notable holders include Mark Hillman. Active congressional traders include Ro Khanna and Rob Bresnahan.
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