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Fin
Echo
Markets
Dashboard
Search
Fear & Greed
Tools
Watchlist
Budget
Context
Upcoming
Notifications
Upcoming
Research
News
Market Events
Economy
SEC Filings
Finecho Content
ZHANG JACK Y.
Private
CIK: 1611157
Location
RANCHO CUCAMONGA, CA
Insider Of
1
Name & Role
Position
Tenure
Holdings
AMPHASTAR PHARMACEUTICALS, INC.
CEO & CHIEF SCIENTIFIC OFFICER
Since Mar 2026
—
AMPHASTAR PHARMACEUTICALS, INC.
Position
CEO & CHIEF SCIENTIFIC OFFICER
Tenure
Since Mar 2026
Holdings
—