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William Mariner Greenman currently holds 5,053,036 shares of CERUS CORP (CERS), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, William Mariner Greenman has been a net seller of CERS stock. They have purchased $260.0K and sold $6.4M worth of shares.
William Mariner Greenman's most recent insider trade was on Jun 30, 2026, when they sold 101,919 shares at $2.94 per share.
William Mariner Greenman serves as Executive at CERUS CORP (CERS). They have executed 96 insider transactions totaling $6.6M over their tenure at the company.
William Mariner Greenman holds the position of Executive at CERUS 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.
William Mariner Greenman has shown a selling trading pattern, with $260.0K in total purchases and $6.4M in total sales across all transactions. Their most recent activity indicates a tendency to reduce their position.
The largest transaction by William Mariner Greenman was on Apr 16, 2021, when they sold $1.5M worth of CERS shares. This transaction involved 233,859 shares at $6.35 per share.
William Mariner Greenman currently owns 5,053,036 shares of CERUS CORP (CERS), with an estimated value of $0. This stake represents their equity holdings accumulated through purchases, awards, and option exercises.
All of William Mariner Greenman's SEC Form 4 insider trading filings are tracked on this page. Each transaction links directly to the official SEC EDGAR filing. William Mariner Greenman has 96 Form 4 filings on record as an insider at CERUS CORP.
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