Petersen Floyd F. (CIK 1611286) reported 12 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2025-12-15). Recent activity: Sell AMPH (2,426 shares), Sell AMPH (1,737 shares), Buy AMPH (16,679 shares), Sell AMPH (16,679 shares), Sell AMPH (500 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2025-12-15 | Amphastar Pharmaceuticals, Inc. (AMPH) | Director | Sell | 2,426 | $62,882 |
| 2025-12-15 | Amphastar Pharmaceuticals, Inc. (AMPH) | Director | Sell | 1,737 | $44,624 |
| 2025-11-17 | Amphastar Pharmaceuticals, Inc. (AMPH) | Director | Buy | 16,679 | $278,373 |
| 2025-11-17 | Amphastar Pharmaceuticals, Inc. (AMPH) | Director | Sell | 16,679 | $441,827 |
| 2025-11-05 | Amphastar Pharmaceuticals, Inc. (AMPH) | Director | Sell | 500 | $12,635 |
| 2025-10-02 | Amphastar Pharmaceuticals, Inc. (AMPH) | Director | Sell | 500 | $13,600 |
| 2025-09-03 | Amphastar Pharmaceuticals, Inc. (AMPH) | Director | Sell | 500 | $15,490 |
| 2025-08-04 | Amphastar Pharmaceuticals, Inc. (AMPH) | Director | Sell | 500 | $10,415 |
| 2025-07-03 | Amphastar Pharmaceuticals, Inc. (AMPH) | Director | Sell | 500 | $11,735 |
| 2025-06-04 | Amphastar Pharmaceuticals, Inc. (AMPH) | Director | Sell | 500 | $12,835 |
| 2025-06-04 | Amphastar Pharmaceuticals, Inc. (AMPH) | Director | Buy | 5,122 | $0 |
| 2025-05-02 | Amphastar Pharmaceuticals, Inc. (AMPH) | Director | Sell | 500 | $12,040 |
Source: SEC Form 4 filings · as of 2025-12-15