Richard K. Prins, Director at Amphastar Pharmaceuticals, Inc. (AMPH), sold 10,582 shares at $21.36 ($226K) on 2021-12-10, disclosed to the SEC on 2021-12-13.
Open-market sale of $226k AMPH by Director. Not flagged as scheduled, tax-driven, or recurring — but no specific bearish signal from our filters. Reasons for insider sales vary widely.
Nothing distinguishes this filing.
| # | Price | Shares | Value | % of Total |
|---|---|---|---|---|
| 1 | $21.36 | 5,291 | $113K | 50.0% |
| 2 | $21.36 | 5,291 | $113K | 50.0% |
| Total | $21.36 avg | 10,582 | $226K | 100% |
| Filing → |
| AMPH | SELL | 2024-12-11 | $875K | — | Filing → |
| AMPH | SELL | 2024-11-13 | $244K | — | Filing → |
| AMPH | SELL | 2024-08-13 | $1.5M | — | Filing → |