Ticker | Value | Shares | Price | Security | Type | Insider | Title | Return | Flags | Date |
|---|---|---|---|---|---|---|---|---|---|---|
| No transactions found | ||||||||||
Rong Zhou currently holds 171,554 shares of Amphastar Pharmaceuticals, Inc. (AMPH), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, Rong Zhou has been a net seller of AMPH stock. They have purchased $0 and sold $5.3M worth of shares.
Rong Zhou's most recent insider trade was on Mar 15, 2026, when they sold 1,225 shares at $18.18 per share.
Rong Zhou serves as Executive at Amphastar Pharmaceuticals, Inc. (AMPH). They have executed 108 insider transactions totaling $5.3M over their tenure at the company.
Rong Zhou 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 11 years and currently hold a stake valued at $0.
Rong Zhou has shown a selling trading pattern, with $0 in total purchases and $5.3M in total sales across all transactions. Their most recent activity indicates a tendency to reduce their position.
The largest transaction by Rong Zhou was on May 18, 2023, when they sold $442.1K worth of AMPH shares. This transaction involved 10,000 shares at $44.21 per share.
Rong Zhou currently owns 171,554 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 Rong Zhou's SEC Form 4 insider trading filings are tracked on this page. Each transaction links directly to the official SEC EDGAR filing. Rong Zhou has 108 Form 4 filings on record as an insider at Amphastar Pharmaceuticals, Inc..
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