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Robert J. Flanagan currently holds 19,638 shares of MARTEK BIOSCIENCES CORP (MATK), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, Robert J. Flanagan has been a net seller of MATK stock. They have purchased $1.4M and sold $14.7M worth of shares.
Robert J. Flanagan's most recent insider trade was on Jul 1, 2025, when they sold 2,778 shares at $0.00 per share.
Robert J. Flanagan serves as Executive at MARTEK BIOSCIENCES CORP (MATK). They have executed 72 insider transactions totaling $16.1M over their tenure at the company.
Robert J. Flanagan holds the position of Executive at MARTEK BIOSCIENCES CORP, where they are responsible for executive-level decision-making and strategic oversight. They have been associated with the company for 20 years and currently hold a stake valued at $0.
Robert J. Flanagan has shown a selling trading pattern, with $1.4M in total purchases and $14.7M in total sales across all transactions. Their most recent activity indicates a tendency to reduce their position.
The largest transaction by Robert J. Flanagan was on Sep 16, 2013, when they sold $10.0M worth of SGNT shares. This transaction involved 500,000 shares at $20.03 per share.
Robert J. Flanagan currently owns 19,638 shares of MARTEK BIOSCIENCES CORP (MATK), with an estimated value of $0. This stake represents their equity holdings accumulated through purchases, awards, and option exercises.
All of Robert J. Flanagan's SEC Form 4 insider trading filings are tracked on this page. Each transaction links directly to the official SEC EDGAR filing. Robert J. Flanagan has 72 Form 4 filings on record as an insider at MARTEK BIOSCIENCES CORP.
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