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CEO & CHIEF SCIENTIFIC OFFICER Zhang Jack Y. covered exercise/tax liability with 8,179 shares, decreasing direct ownership by 0.23% to 2,502,801 units (SEC Form 4)

ByQuantisnow·Wall Street's wire, on your screen.
AMPH· Amphastar Pharmaceuticals Inc.
Health Care
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CEO & CHIEF SCIENTIFIC OFFICER Zhang Jack Y. covered exercise/tax liability with 8,179 shares, decreasing direct ownership by 0.23% to 2,502,801 units (SEC Form 4) | Quantisnow