Richard K. Prins, Director at Amphastar Pharmaceuticals, Inc. (AMPH), sold 8,326 shares at $57.39 ($478K) on 2023-08-15, disclosed to the SEC on 2023-08-16.
Seasonal sale ($478k) by Director — this insider has traded AMPH in August in at least three consecutive prior years. Pattern-driven, low signal.
Negative factors outweigh the positive ones.
| # | Price | Shares | Value | % of Total |
|---|---|---|---|---|
| 1 | $57.39 | 4,163 | $239K | 50.0% |
| 2 | $57.39 | 4,163 | $239K | 50.0% |
| Total | $57.39 avg | 8,326 | $478K | 100% |
| Filing → |
| AMPH | SELL | 2024-12-11 | $875K | — | Filing → |
| AMPH | SELL | 2024-11-13 | $244K | — | Filing → |
| AMPH | SELL | 2024-08-13 | $1.5M | — | Filing → |