June 1, 2026 · Form 4 insider transaction
Lee Howard bought 8,143 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 2 days after the transaction.
The reported shares are represented by restricted stock units, or RSUs, all of which vest on June 1, 2027.