BIOGEN IDEC INC
BIOGEN IDEC INC (BIIB) is a publicly traded company in the Unknown sector. Across all available filings, 46 corporate insiders have executed 1014 transactions totaling $283.6M, demonstrating a bullish sentiment with $82.4M in net insider flow. The most recent transaction on Feb 2, 2026 involved a sale of 748 shares valued at $134.1K.
BIIB Insider Activity Summary
Who Is Buying BIIB Stock?
No significant insider buying has been recorded for BIIB in the recent period.
Who Is Selling BIIB Stock?
No significant insider selling has been recorded for BIIB in the recent period.
Is BIOGEN IDEC INC Insider Trading Bullish or Bearish?
Based on recent SEC filings, insider sentiment for BIIB is bullish with an Insider Alignment Score of 65/100 and a net flow of $82.4M. Insiders are accumulating shares, which historically signals confidence in the company's future performance.
BIIB Frequently Asked Questions
Understanding BIIB Insider Activity
Insider trading at BIOGEN IDEC INC (BIIB) refers to stock transactions made by corporate insiders—executives, directors, and beneficial owners holding more than 10% of the company's shares. These individuals have access to material non-public information and are required by law to report their trades to the SEC within two business days. Currently, 46 insiders are actively trading BIIB stock, having executed 1014 transactions in the past 90 days. The most active insider is Alexander J. Denner (Executive), who has made 23 transactions totaling $177.1M.
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Track BIOGEN IDEC INC Insider Activity
Get notified when executives and directors at BIIB file new Form 4 transactions