Floyd F. Petersen serves as Executive at Amphastar Pharmaceuticals, Inc., where they oversee executive responsibilities. Since joining the company, Floyd F. Petersen has executed 99 insider transactions totaling $4.8M, demonstrating a bearish approach to their equity position. Their most recent transaction on Dec 12, 2025 involved selling 2,426 shares valued at $62.9K.
Floyd F. Petersen currently holds 71,368 shares of Amphastar Pharmaceuticals, Inc. (AMPH), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, Floyd F. Petersen has been a net seller of AMPH stock. They have purchased $33.1K and sold $4.7M worth of shares.
Floyd F. Petersen's most recent insider trade was on Dec 12, 2025, when they sold 2,426 shares at $25.92 per share.
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| $25.69 |
| Discretionary |
| Nov 13, 2025 | AMPH | $278.4K | Option Exercise | 16,679 | $16.69 | Discretionary |
| Nov 13, 2025 | AMPH | $441.8K | Sale | 16,679 | $26.49 | Discretionary |
| Nov 3, 2025 | AMPH | $12.6K | Sale | 500 | $25.27 | Discretionary |
| Oct 1, 2025 | AMPH | $13.6K | Sale | 500 | $27.20 | Discretionary |
| Sep 2, 2025 | AMPH | $15.5K | Sale | 500 | $30.98 | Discretionary |
| Aug 1, 2025 | AMPH | $10.4K | Sale | 500 | $20.83 | Discretionary |
| Jul 2, 2025 | AMPH | $11.7K | Sale | 500 | $23.47 | Discretionary |
| Sep 5, 2024 | AMPH | $139.4K | Sale | 3,000 | $46.47 | Discretionary |
| Jun 10, 2024 | AMPH | $124.2K | Sale | 3,000 | $41.40 | Discretionary |
| Jun 3, 2024 | AMPH | $21.3K | Sale | 500 | $42.65 | Planned |
| Jun 3, 2024 | AMPH | $0 | Award | 3,076 | $N/A | Planned |
| May 1, 2024 | AMPH | $20.8K | Sale | 500 | $41.67 | Planned |
| Apr 1, 2024 | AMPH | $21.7K | Sale | 500 | $43.43 | Planned |
| Mar 1, 2024 | AMPH | $20.6K | Sale | 451 | $45.60 | Planned |
| Mar 1, 2024 | AMPH | $2.3K | Sale | 49 | $46.53 | Planned |
| Feb 1, 2024 | AMPH | $25.2K | Sale | 474 | $53.07 | Planned |
| Feb 1, 2024 | AMPH | $1.4K | Sale | 26 | $53.64 | Planned |
| Jan 2, 2024 | AMPH | $21.8K | Sale | 353 | $61.70 | Planned |
| Jan 2, 2024 | AMPH | $8.9K | Sale | 147 | $60.56 | Planned |
| Dec 1, 2023 | AMPH | $7.7K | Sale | 135 | $57.24 | Planned |
| Dec 1, 2023 | AMPH | $21.2K | Sale | 365 | $58.15 | Planned |
| Nov 1, 2023 | AMPH | $22.6K | Sale | 500 | $45.30 | Planned |
| Oct 2, 2023 | AMPH | $22.9K | Sale | 500 | $45.78 | Planned |
| Jun 5, 2023 | AMPH | $0 | Award | 2,716 | $N/A | Discretionary |
| May 17, 2023 | AMPH | $215.7K | Sale | 5,000 | $43.13 | Discretionary |
| Apr 3, 2023 | AMPH | $18.5K | Sale | 491 | $37.72 | Planned |
| Mar 1, 2023 | AMPH | $15.1K | Sale | 412 | $36.59 | Discretionary |
| Mar 1, 2023 | AMPH | $3.2K | Sale | 87 | $37.25 | Discretionary |