Deflin Gayle Acquires Amphastar Pharmaceuticals Stock Options and RSUs

2026-06-03SEC Filing 4 (0001866024-26-000003)

On June 1, 2026, Deflin Gayle, a director at Amphastar Pharmaceuticals, Inc. (AMPH), acquired 17,365 stock options and 8,143 restricted stock units (RSUs). The stock options, with an exercise price of $18.42, vest on June 1, 2027, and expire on June 1, 2036. The RSUs also vest on June 1, 2027. Following these transactions, Gayle directly owns 19,057 shares of common stock. This filing is a Form 4, indicating a change in beneficial ownership.