Insider Trading Report for Zhou Rong

Zhou Rong, Senior EVP of Production Center at Amphastar Pharmaceuticals, Inc. (AMPH), reported several transactions on September 16, 2026. Rong acquired 10,000 shares of Common Stock at $13.35 per share and disposed of 10,000 shares of Common Stock at a weighted average price of $23.94, with individual sales ranging from $23.83 to $24.05. Additionally, Rong exercised an employee stock option to acquire 10,000 shares of Common Stock at $0.00, with an exercise price of $13.35. Following these transactions, Rong directly owns 169,203 shares and indirectly owns 104,668 shares through the Zhou Family Trust and his spouse. The report was signed by Eva Wen, by power of attorney, on September 17, 2026.