Open Insider Trading Activity for Amphastar Pharmaceuticals, Inc. Director Prins Richard K
31-day price and insider activity (up to 2 years)
Daily candles with triangles for the buy and sale transactions shown below. Scroll left or zoom out to load earlier candles (up to 2 years).
▲ Insider buy
▼ Insider sale
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Charting by TradingView Lightweight Charts
| Ticker | Filing Date | Transaction Date | Company | Insider | Title | Transaction | Trade Count | Shares | Avg. Price | Total Value | Position Size Change | SEC Filing |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Explained M/S: sale activity tied to share conversions or derivative-related share movements. AMPH | 2025-11-25 | 2025-11-25 | Amphastar Pharmaceuticals, Inc. | Prins Richard K | Director | Sell | 1 | 4,179 | $27.10 | $113,250.90 | 10.62% | View Filing |