Rong Zhou (SENIOR EVP, PRODUCTION CENTER) sold ~$75K of Amphstar Pharmaceuticals, Inc.
Automatic saleLoading…
Traded Aug 7, 2026 · Filed Aug 11, 2026
Derivative exercise or conversion — not an open-market buy.
Written from the filing's own figures. OQRO describes what was reported and never tells you what to buy or sell
option exercise
Code M — exercise or conversion of a derivative security
Footnote references an employee stock purchase plan
Only flagged when a footnote says so; never inferred
Rong Zhou (SENIOR EVP, PRODUCTION CENTER) sold ~$75K of Amphstar Pharmaceuticals, Inc.
Automatic saleTraded Aug 11 · filed 1 day laterNot under a reported trading plan
A Amphstar Pharmaceuticals director sold $162K of Amphstar Pharmaceuticals shares. The filing does not indicate a pre-arranged trading plan.
William J Peters (CFO, EVP & TREASURER) sold ~$184K of Amphstar Pharmaceuticals, Inc.
Scheduled in advance