Floyd F. Petersen is Director at Amphastar Pharmaceuticals, Inc. (AMPH). They have made 14 open-market trades across 1 company since 2014, most recently 2025-12-12.
CIK 0001611286
1 open-market purchase totalling $33K since 2014, against 13 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| AMPH | 71,368 | $2.0M |
Shares reported on the most recent Form 4, priced at the 2025-12-15 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| AMPH | SELL | 2025-12-11 | 2025-12-15 | $25.86 | $170K | +3.6% | +6.0% | -25.7% |
| AMPH | SELL | 2025-11-13 | 2025-11-17 | $26.49 | $884K | +7.3% | +1.0% | +10.2% |
| AMPH | SELL · 10b5-1 | 2025-11-03 | 2025-11-05 | $25.27 | $13K | +2.4% | +5.4% | +11.1% |
| AMPH | SELL · 10b5-1 | 2025-10-01 | 2025-10-02 | $27.20 | $14K | -10.0% | -4.6% | +1.0% |
| AMPH | SELL · 10b5-1 | 2025-09-02 | 2025-09-03 | $30.98 | $15K | -7.2% | -9.0% | -9.3% |
| AMPH | SELL · 10b5-1 | 2025-08-01 | 2025-08-04 | $20.83 | $10K | +40.9% | +37.1% | +18.0% |
| AMPH | SELL · 10b5-1 | 2025-07-02 | 2025-07-03 | $23.47 | $12K | -7.8% | -7.2% | +17.0% |
| AMPH | SELL · 10b5-1 | 2025-06-02 | 2025-06-04 | $25.67 | $13K | +0.3% | -11.7% | +19.0% |
| AMPH | SELL · 10b5-1 | 2025-05-01 | 2025-05-02 | $24.08 | $12K | -4.7% | +3.8% | -14.3% |
| AMPH | SELL · 10b5-1 | 2025-04-01 | 2025-04-02 | $28.38 | $14K | -11.7% | -11.5% | -15.6% |
| AMPH | SELL · 10b5-1 | 2025-03-06 | 2025-03-07 | $27.99 | $28K | -2.7% | -12.7% | -10.9% |
| AMPH | SELL | 2024-09-05 | 2024-09-06 | $46.47 | $139K | +10.4% | +3.9% | -3.3% |
| AMPH | SELL | 2024-06-10 | 2024-06-11 | $41.40 | $124K | -2.2% | -6.2% | +6.7% |
| AMPH | SELL · 10b5-1 | 2024-06-03 | 2024-06-05 | $42.65 | $21K | -3.3% | -9.9% | +12.1% |
| AMPH | SELL · 10b5-1 | 2024-05-01 | 2024-05-02 | $41.67 | $21K | -3.9% | -1.7% | +1.2% |
| AMPH | SELL · 10b5-1 | 2024-04-01 | 2024-04-02 | $43.43 | $22K | -6.1% | +1.1% | -8.7% |
| AMPH | SELL · 10b5-1 | 2024-03-01 | 2024-03-04 | $45.69 | $23K | -8.8% | -11.4% | -10.8% |
| AMPH | SELL · 10b5-1 | 2024-02-01 | 2024-02-02 | $53.10 | $27K | +4.7% | -11.0% | -18.7% |
| AMPH | SELL · 10b5-1 | 2024-01-02 | 2024-01-03 | $61.36 | $31K | -10.0% | -14.4% | -31.4% |
| AMPH | SELL · 10b5-1 | 2023-12-01 | 2023-12-04 | $57.90 | $29K | -2.8% | +2.1% | -22.0% |
| AMPH | SELL · 10b5-1 | 2023-11-01 | 2023-11-02 | $45.30 | $23K | +22.3% | +30.1% | +15.8% |
| AMPH | SELL · 10b5-1 | 2023-10-02 | 2023-10-03 | $45.78 | $23K | +1.9% | +1.2% | +38.8% |
| AMPH | SELL | 2023-05-17 | 2023-05-18 | $43.13 | $216K | +0.6% | +26.5% | +27.1% |
| AMPH | SELL · 10b5-1 | 2023-04-03 | 2023-04-04 | $37.72 | $19K | +7.9% | -6.0% | +48.2% |
| AMPH | SELL · 10b5-1 | 2023-03-01 | 2023-03-02 | $36.70 | $18K | +0.3% | +2.8% | +19.6% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.