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BIIB · NASDAQ · Biotechnology
Everything reported about this company, newest first. Each line shows the dates that matter for its source.
Congress trade · Transaction Aug 18, 2026 · Disclosed Sep 1, 2026
Disclosed sale of BIIB — reported range $1,001 - $15,000SourceInsider trade · Traded Aug 3, 2026 · Filed Aug 5, 2026
Director sold ~$121K of BIIB shares in the open marketSourceInsider trade · Traded Aug 4, 2026 · Filed Aug 5, 2026
Director sold ~$119K of BIIB shares in the open marketSourceCongress trade · Transaction Mar 27, 2026 · Disclosed Jul 21, 2026
Disclosed purchase of BIIB — reported range $1,001 - $15,000SourceCongress trade · Transaction Jun 2, 2026 · Disclosed Jul 7, 2026
Disclosed sale of BIIB — reported range $15,001 - $50,000SourceCongress trade · Transaction Jun 5, 2026 · Disclosed Jul 2, 2026
Disclosed purchase of BIIB — reported range $1,001 - $15,000SourceCongress trade · Transaction May 11, 2026 · Disclosed Jun 8, 2026
Disclosed purchase of BIIB — reported range $50,001 - $100,000SourceCongress trade · Transaction May 12, 2026 · Disclosed Jun 8, 2026
Disclosed purchase of BIIB — reported range $1,001 - $15,000SourceCongress trade · Transaction May 11, 2026 · Disclosed Jun 8, 2026
Disclosed purchase of BIIB — reported range $1,001 - $15,000SourceInsider trade · Traded Feb 12, 2026 · Filed Feb 18, 2026
Officer purchased ~$585 of BIIB shares in the open marketSourceCongress trade · Transaction Jan 30, 2026 · Disclosed Feb 13, 2026
Disclosed purchase of BIIB — reported range $1,001 - $15,000SourceInsider trade · Traded Feb 9, 2026 · Filed Feb 10, 2026
Officer sold ~$532K of BIIB shares in the open marketSource5%+ stake · Stake as of Dec 31, 2025 · Filed Feb 5, 2026
FMR LLC now owns 6.4% of BIIB as a passive investorSourceCongress trade · Transaction May 15, 2025 · Disclosed Jun 9, 2025
Disclosed purchase of BIIB — reported range $1,001 - $15,000SourceCongress trade · Transaction Apr 8, 2025 · Disclosed May 8, 2025
Disclosed sale of BIIB — reported range $1,001 - $15,000SourceCongress trade · Transaction Feb 25, 2025 · Disclosed Mar 27, 2025
Disclosed purchase of BIIB — reported range $1,001 - $15,000SourceInsider trade · Traded Feb 2, 2026 · Filed Feb 3, 2026
Officer sold ~$134K of BIIB shares in the open marketSource
