Ticker | Value | Shares | Price | Security | Type | Insider | Title | Return | Flags | Date |
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Richard K. Prins currently holds 17,365 shares of Amphastar Pharmaceuticals, Inc. (AMPH), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, Richard K. Prins has been a net seller of AMPH stock. They have purchased $40.1K and sold $7.2M worth of shares.
Richard K. Prins's most recent insider trade was on Jun 1, 2026, when they sold 17,365 shares at $0.00 per share.
Richard K. Prins serves as Executive at Amphastar Pharmaceuticals, Inc. (AMPH). They have executed 463 insider transactions totaling $7.2M over their tenure at the company.
Richard K. Prins holds the position of Executive at Amphastar Pharmaceuticals, Inc., where they are responsible for executive-level decision-making and strategic oversight. They have been associated with the company for 13 years and currently hold a stake valued at $0.
Richard K. Prins has shown a selling trading pattern, with $40.1K in total purchases and $7.2M in total sales across all transactions. Their most recent activity indicates a tendency to reduce their position.
The largest transaction by Richard K. Prins was on Aug 12, 2024, when they sold $736.5K worth of AMPH shares. This transaction involved 17,101 shares at $43.07 per share.
Richard K. Prins currently owns 17,365 shares of Amphastar Pharmaceuticals, Inc. (AMPH), with an estimated value of $0. This stake represents their equity holdings accumulated through purchases, awards, and option exercises.
All of Richard K. Prins's SEC Form 4 insider trading filings are tracked on this page. Each transaction links directly to the official SEC EDGAR filing. Richard K. Prins has 463 Form 4 filings on record as an insider at Amphastar Pharmaceuticals, Inc..
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