Michael A. Zasloff, Director at Amphastar Pharmaceuticals, Inc. (AMPH), sold 7,500 shares at $42.18 ($316K) on 2023-05-15, disclosed to the SEC on 2023-05-16.
Seasonal sale ($316k) by Director — this insider has traded AMPH in May in at least three consecutive prior years. Pattern-driven, low signal.
Negative factors outweigh the positive ones.
| Filing → |
| AMPH | SELL | 2022-05-17 | $733K | — | Filing → |
| AMPH | SELL | 2022-03-17 | $337K | — | Filing → |
| AMPH | SELL | 2021-05-14 | $999K | — | Filing → |