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Symbol
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AMPH on Nasdaq
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Investment type
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Equity / Common Stock
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Latest Disclosed Shares Owned
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12,524,153 shares
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Security Ownership %
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25%
Jack Y. Zhang ownership in Amphastar Pharmaceuticals, Inc. Common Stock (AMPH)
07 Feb 2025 - Jack Y. Zhang has filed an SCHEDULE 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 12,524,153 shares of Amphastar Pharmaceuticals, Inc. Common Stock (AMPH).
This represents 25% ownership of the company.
This is the first filing by Jack Y. Zhang disclosing ownership of Amphastar Pharmaceuticals, Inc. Common Stock (AMPH).