Rong Zhou, EVP, Production Center at Amphastar Pharmaceuticals, Inc. (AMPH), sold 3,200 shares at $25.00 ($80K) on 2019-03-01, disclosed to the SEC on 2019-03-04.
Seasonal sale ($80k) by EVP, Production Center — this insider has traded AMPH in March in at least three consecutive prior years. Pattern-driven, low signal.
Nothing distinguishes this filing.
| Filing → |
| AMPH | SELL | 2024-12-16 | $673K | — | Filing → |
| AMPH | SELL | 2024-11-13 | $674K | — | Filing → |
| AMPH | SELL | 2024-09-17 | $145K | — | Filing → |