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Mark Stejbach currently holds 20,569 shares of Alkermes plc. (ALKS), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, Mark Stejbach has been a net seller of ALKS stock. They have purchased $99.0K and sold $5.4M worth of shares.
Mark Stejbach's most recent insider trade was on Jan 26, 2026, when they sold 3,722 shares at $0.00 per share.
Mark Stejbach serves as Executive at Alkermes plc. (ALKS). They have executed 68 insider transactions totaling $5.5M over their tenure at the company.
Mark Stejbach holds the position of Executive at Alkermes plc., where they are responsible for executive-level decision-making and strategic oversight. They have been associated with the company for 16 years and currently hold a stake valued at $0.
Mark Stejbach has shown a selling trading pattern, with $99.0K in total purchases and $5.4M in total sales across all transactions. Their most recent activity indicates a tendency to reduce their position.
The largest transaction by Mark Stejbach was on Dec 1, 2015, when they sold $1.1M worth of ALKS shares. This transaction involved 15,200 shares at $71.99 per share.
Mark Stejbach currently owns 20,569 shares of Alkermes plc. (ALKS), with an estimated value of $0. This stake represents their equity holdings accumulated through purchases, awards, and option exercises.
All of Mark Stejbach's SEC Form 4 insider trading filings are tracked on this page. Each transaction links directly to the official SEC EDGAR filing. Mark Stejbach has 68 Form 4 filings on record as an insider at Alkermes plc..
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