SEC Filing Summary

Zhou Rong, Senior EVP of Production Center at Amphastar Pharmaceuticals, Inc., reported a sale of 3,187 shares of Common Stock on September 2, 2026. The shares were sold at a weighted average price of $23.6291, with prices ranging from $23.62 to $23.69. Following this transaction, Mr. Rong directly owns 169,203 shares. Additionally, the filing indicates indirect ownership of 99,668 shares held by the Zhou Family Trust and 5,000 shares held by his spouse. The filing also notes 836 shares acquired under an employee stock purchase plan.