July 9, 2026 · Form 4 insider transaction
Pierce Anthony T bought 7,886 shares of Amphastar Pharmaceuticals, Inc. at $0.00 per share, a transaction worth N/A. The trade was recorded as grant or award and disclosed on an SEC Form 4, filed 4 days after the transaction.
The reported shares are represented by restricted stock units, or RSUs, all of which vest on July 9, 2027.