BIOGEN IDEC INCInsider Trading & SEC Form 4 Analysis
Institutional analysis of internal capital flows based on SEC Form 4 filings.
Automated_Intelligence_Report :: BIIB
Algorithmic analysis of recent insider trading activity for BIIB reveals a bearish posture among the C-suite and board members. Based on the latest SEC Form 4 filings, we have tracked capital events executed by 20 distinct corporate insiders. The aggregate nominal exposure during this reporting cycle reached $10.56M.
Market dynamics show a negative net capital flow of $2.68M when isolating open-market purchases versus open-market sales. The trading volume is heavily weighted towards open-market executions, providing a clearer signal of insider conviction regarding current valuation levels compared to option-based equity grants.
From a microstructural perspective, the landscape is fragmented. DORSA CAROLINE led the buying pressure, while SHERWIN STEPHEN A registered the largest single offload of shares. Continuous monitoring of these Tier-1 actors is essential, as their liquidity decisions often precede material corporate events or reflect an informed, asymmetric perspective on the future performance of BIIB.
$10.56M
USD NOMINAL VALUE20
UNIQUE C-SUITE ENTITIES2026.05.01
ISO_8601 FORMATAutomated_Queries :: Frequently Asked Questions
>Who is currently buying BIIB stock?
Based on the latest SEC Form 4 filings, DORSA CAROLINE (Director) has been actively acquiring shares. The total recent insider buying volume stands at $0.15M.
>Are BIIB insiders selling their shares?
Yes, we have tracked $2.83M in recent insider liquidations. The most notable recent seller is SHERWIN STEPHEN A, who executed the largest single offload.
>What is the overall insider sentiment for BIIB?
The short-term structural capital flow indicates a BEARISH sentiment, with a net flow of $2.68M generated by 20 active C-Suite entities.