PRINS RICHARD K
SEC CIK 1047579 · EDGAR
BoughtSold
Most active insiders at AMPH, 12 months
| # | Insider | Title | Bought | Sold |
|---|---|---|---|---|
| 1 | Petersen Floyd F. | Dir | — | $575.6K |
| 2 | Zhou Rong | SENIOR EVP, PRODUCTION CENTER | — | $571.1K |
| 3 | PETERS WILLIAM J | CFO, EVP, Treas, Dir | — | $287.4K |
| 4 | PRINS RICHARD K | Dir | — | $275.1K |
| 5 | Pierce Anthony T | Dir | — | — |
| 6 | Gaugh David Russell | Dir | — | — |
| 7 | Deflin Gayle | Dir | — | — |
| 8 | Liawatidewi Yakob | EVP CORP ADMIN CENTER, Dir | — | — |
| 9 | Gerst Diane G. | Dir | — | — |
| 10 | Zhang Jack Y. | CEO, CSO, Dir, 10% | — | — |
Transactions 40
| X | Filed | Traded | Ticker | Company | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026-08-12 18:14 | 2026-08-11 | AMPH | Amphastar Pharmaceuticals, Inc. | PRINS RICHARD K | Dir | S - Sale | $20.30 | -7,973 | 29.6K | -21% | -$161.9K | |
| D | 2026-06-03 21:22 | 2024-08-19 | AMPH | Amphastar Pharmaceuticals, Inc. | PRINS RICHARD K | Dir | G - Gift | $0.00 | -1,500 | 29.5K | -5% | $0 |
| D | 2026-06-03 21:22 | 2026-06-01 | AMPH | Amphastar Pharmaceuticals, Inc. | PRINS RICHARD K | Dir | A - Grant | $0.00 | +8,143 | 37.6K | +28% | $0 |
| DM | 2026-04-06 16:02 | 2026-04-01 | IGC | IGC Pharma, Inc. | PRINS RICHARD K | Dir | M - OptEx | $0.00 | +170.0K | 1.54M | +12% | $0 |
| D | 2026-01-20 | 2026-01-19 | IGC | IGC Pharma, Inc. | PRINS RICHARD K | Dir | M - OptEx | $0.00 | +100.0K | 1.37M | +8% | $0 |
| D | 2025-11-25 | 2025-11-25 | AMPH | Amphastar Pharmaceuticals, Inc. | PRINS RICHARD K | Dir | S - Sale+OE | $27.10 | -4,179 | 35.2K | -11% | -$113.3K |
| D | 2025-11-25 | 2025-11-25 | AMPH | Amphastar Pharmaceuticals, Inc. | PRINS RICHARD K | Dir | M - OptEx | $16.69 | +4,179 | 39.4K | +12% | +$69.7K |
| D | 2025-06-04 | 2025-06-02 | AMPH | Amphastar Pharmaceuticals, Inc. | PRINS RICHARD K | Dir | A - Grant | $0.00 | +5,122 | 35.2K | +17% | $0 |
| D | 2024-12-11 | 2024-12-09 | AMPH | Amphastar Pharmaceuticals, Inc. | PRINS RICHARD K | Dir | M - OptEx | $19.52 | +10.0K | 40.5K | +33% | +$195.2K |
| D | 2024-12-11 | 2024-12-09 | AMPH | Amphastar Pharmaceuticals, Inc. | PRINS RICHARD K | Dir | G - Gift | $0.00 | -410 | 30.1K | -1% | $0 |
| D | 2024-12-11 | 2024-12-09 | AMPH | Amphastar Pharmaceuticals, Inc. | PRINS RICHARD K | Dir | S - Sale+OE | $43.77 | -10.0K | 30.5K | -25% | -$437.7K |
| D | 2024-11-13 | 2024-11-12 | AMPH | Amphastar Pharmaceuticals, Inc. | PRINS RICHARD K | Dir | S - Sale+OE | $48.80 | -5,000 | 31.5K | -14% | -$244.0K |
| D | 2024-11-13 | 2024-11-12 | AMPH | Amphastar Pharmaceuticals, Inc. | PRINS RICHARD K | Dir | G - Gift | $0.00 | -1,000 | 30.5K | -3% | $0 |
| D | 2024-11-13 | 2024-11-12 | AMPH | Amphastar Pharmaceuticals, Inc. | PRINS RICHARD K | Dir | M - OptEx | $16.69 | +2,500 | 36.5K | +7% | +$41.7K |
| DM | 2024-08-13 | 2024-08-12 | AMPH | Amphastar Pharmaceuticals, Inc. | PRINS RICHARD K | Dir | M - OptEx | $19.83 | +17.1K | 43.9K | +64% | +$339.2K |
| D | 2024-08-13 | 2024-08-12 | AMPH | Amphastar Pharmaceuticals, Inc. | PRINS RICHARD K | Dir | S - Sale+OE | $43.07 | -17.1K | 34.0K | -33% | -$736.5K |
| 2024-08-12 | 2024-08-12 | IGC | IGC Pharma, Inc. | PRINS RICHARD K | Dir | G - Gift | $0.00 | -200.0K | 1.04M | -16% | $0 | |
| D | 2024-06-05 | 2024-06-03 | AMPH | Amphastar Pharmaceuticals, Inc. | PRINS RICHARD K | Dir | A - Grant | $0.00 | +3,076 | 34.0K | +10% | $0 |
| DM | 2024-03-15 | 2024-03-13 | IGC | IGC Pharma, Inc. | PRINS RICHARD K | Dir | M - OptEx | $0.00 | +329.6K | 1.07M | +44% | $0 |
| 2023-11-20 | 2023-11-17 | AMPH | Amphastar Pharmaceuticals, Inc. | PRINS RICHARD K | Dir | S - Sale | $55.86 | -4,000 | 31.9K | -11% | -$223.4K | |
| 2023-11-20 | 2023-11-17 | AMPH | Amphastar Pharmaceuticals, Inc. | PRINS RICHARD K | Dir | G - Gift | $0.00 | -1,000 | 30.9K | -3% | $0 | |
| 2023-11-15 | 2023-11-13 | AMPH | Amphastar Pharmaceuticals, Inc. | PRINS RICHARD K | Dir | S - Sale | $52.50 | -5,000 | 35.9K | -12% | -$262.5K | |
| 2023-08-21 | 2023-08-18 | AMPH | Amphastar Pharmaceuticals, Inc. | PRINS RICHARD K | Dir | S - Sale | $52.50 | -2,000 | 40.9K | -5% | -$105.0K | |
| 2023-08-16 | 2023-08-15 | AMPH | Amphastar Pharmaceuticals, Inc. | PRINS RICHARD K | Dir | S - Sale | $57.39 | -4,163 | 42.9K | -9% | -$238.9K | |
| DM | 2023-06-27 | 2023-03-31 | IGC | IGC Pharma, Inc. | PRINS RICHARD K | Dir | M - OptEx | $0.00 | +158.3K | 913.3K | +21% | $0 |
| D | 2023-06-07 | 2023-06-05 | AMPH | Amphastar Pharmaceuticals, Inc. | PRINS RICHARD K | Dir | A - Grant | $0.00 | +2,716 | 47.1K | +6% | $0 |
| DM | 2023-05-16 | 2023-05-12+ | AMPH | Amphastar Pharmaceuticals, Inc. | PRINS RICHARD K | Dir | S - Sale+OE | $42.78 | -10.0K | 47.3K | -17% | -$427.8K |
| DM | 2023-05-16 | 2023-05-12+ | AMPH | Amphastar Pharmaceuticals, Inc. | PRINS RICHARD K | Dir | M - OptEx | $16.69 | +10.0K | 49.3K | +25% | +$166.9K |
| D | 2023-05-16 | 2023-05-12 | AMPH | Amphastar Pharmaceuticals, Inc. | PRINS RICHARD K | Dir | G - Gift | $0.00 | -3,000 | 44.3K | -6% | $0 |
| DM | 2022-06-28 | 2022-03-21+ | IGC | IGC Pharma, Inc. | PRINS RICHARD K | Dir | M - OptEx | $0.00 | +225.0K | 755.0K | +42% | $0 |
| D | 2022-06-14 | 2022-05-17 | AMPH | Amphastar Pharmaceuticals, Inc. | PRINS RICHARD K | Dir | G - Gift | $0.00 | -2,000 | 43.2K | -4% | $0 |
| D | 2022-06-14 | 2022-06-10 | AMPH | Amphastar Pharmaceuticals, Inc. | PRINS RICHARD K | Dir | A - Grant | $0.00 | +4,163 | 47.3K | +10% | $0 |
| D | 2022-03-17 | 2022-03-15 | AMPH | Amphastar Pharmaceuticals, Inc. | PRINS RICHARD K | Dir | M - OptEx | $17.11 | +10.0K | 55.2K | +22% | +$171.1K |
| D | 2022-03-17 | 2022-03-15 | AMPH | Amphastar Pharmaceuticals, Inc. | PRINS RICHARD K | Dir | S - Sale+OE | $34.02 | -10.0K | 45.2K | -18% | -$340.2K |
| D | 2021-12-27 | 2021-12-20 | IGC | IGC Pharma, Inc. | PRINS RICHARD K | Dir | A - Grant | $0.00 | +300.0K | 570.0K | +111% | $0 |
| D | 2021-12-27 | 2021-12-23 | IGC | IGC Pharma, Inc. | PRINS RICHARD K | Dir | G - Gift | $0.00 | -40.0K | 530.0K | -7% | $0 |
| D | 2021-12-13 | 2021-12-10 | AMPH | Amphastar Pharmaceuticals, Inc. | PRINS RICHARD K | Dir | M - OptEx | $17.11 | +5,291 | 50.5K | +12% | +$90.5K |
| D | 2021-12-13 | 2021-12-10 | AMPH | Amphastar Pharmaceuticals, Inc. | PRINS RICHARD K | Dir | S - Sale+OE | $21.36 | -5,291 | 45.2K | -10% | -$113.0K |
| D | 2021-11-23 | 2021-11-22 | AMPH | Amphastar Pharmaceuticals, Inc. | PRINS RICHARD K | Dir | S - Sale+OE | $21.22 | -5,000 | 45.2K | -10% | -$106.1K |
| D | 2021-11-23 | 2021-11-22 | AMPH | Amphastar Pharmaceuticals, Inc. | PRINS RICHARD K | Dir | M - OptEx | $17.11 | +5,000 | 50.2K | +11% | +$85.5K |
Purchase Sale Sale after option exercise All abbreviations