Amphastar Pharmaceuticals, Inc. 4

Senior EVP Zhou Rong sold 3,187 shares of Amphastar Pharmaceuticals, Inc. Common Stock for about $75K and now holds significant remaining direct and indirect positions.

On September 2, 2026, Zhou Rong, Senior EVP, Production Center of Amphastar Pharmaceuticals, Inc., sold 3,187 shares of Common Stock at a weighted average price of $23.6291 per share for total proceeds of approximately $75,300, in multiple transactions within a narrow price range of $23.62 to $23.69. Following this sale, Zhou Rong reported direct ownership of 169,203 shares, and additional indirect holdings of 99,668 shares held by the Zhou Family Trust (for which the reporting person serves as trustee) and 5,000 shares held by the reporting person’s spouse, with the direct holdings including 836 shares acquired under the issuer’s 2014 Employee Stock Purchase Plan.

Filing Facts

CIK

1297184

Ticker

AMPH

Form

4

Source Type

fda

Accession

0001645326-26-000012

Alert Tier

5