November 25, 2025 · Form 4 insider transaction
PRINS RICHARD K sold 4,179 shares of Amphastar Pharmaceuticals Inc at $27.10 per share, a transaction worth $113.3K. The trade was recorded as open-market sale and disclosed on an SEC Form 4, filed 0 days after the transaction.
The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $27.10 to $27.125, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.