Insider Trading & Ownership of Jack Y. Zhang

Location
Rancho Cucamonga, CA
Summary
The estimated net worth of Jack Y. Zhang is at least $112,189,838 dollars as of 17 Mar 2026. Jack Y. Zhang is the CEO & CHIEF SCIENTIFIC OFFICER, Director, 10%+ Owner of Amphastar Pharmaceuticals, Inc. and owns shares of Amphastar Pharmaceuticals, Inc. (AMPH) stock worth about $112.19M.
Signature
/s/ Eva Wen, by power of attorney for Jack Y. Zhang
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Ownership of Jack Y. Zhang

Symbol Company Relationship Holdings Value Past Year Net Change Change % Report Period
AMPH Amphastar Pharmaceuticals, Inc. CEO & CHIEF SCIENTIFIC OFFICER, Director, 10%+ Owner $112,189,838 15 Mar 2026

Insider Transactions Reported by Jack Y. Zhang:

Sym Company Class Transaction % Value $ * Price $ Shares Shares After Date Ownership
* An asterisk sign (*) next to the price indicates that the price is likely invalid.