ZASLOFF MICHAEL A has filed 10 insider transactions across 1 company since May 2023.
Most recent transaction: a grant/award of 5122 shares of Amphastar Pharmaceuticals, Inc. ($AMPH) on June 02, 2025.
Activity breakdown: 0 open-market purchases and 4 sales.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| June 2, 2025 | Amphastar Pharmaceuticals, Inc. | $AMPH | ZASLOFF MICHAEL A | Not found | A | Common Stock | 5122 | $0.00 | 29,524.0000 | 49,890,000 | 20.99% | 0.01% |
| June 2, 2025 | Amphastar Pharmaceuticals, Inc. | $AMPH | ZASLOFF MICHAEL A | Not found | A | Stock Option (right to buy) | 11402 | $0.00 | 11,402.0000 | 49,890,000 | 9999.99% | 0.02% |
| June 3, 2024 | Amphastar Pharmaceuticals, Inc. | $AMPH | ZASLOFF MICHAEL A | Not found | A | Common Stock | 3076 | $0.00 | 24,402.0000 | 53,013,000 | 14.42% | 0.01% |
| June 3, 2024 | Amphastar Pharmaceuticals, Inc. | $AMPH | ZASLOFF MICHAEL A | Not found | A | Stock Option (right to buy) | 6864 | $0.00 | 6,864.0000 | 53,013,000 | 9999.99% | 0.01% |
| March 5, 2024 | Amphastar Pharmaceuticals, Inc. | $AMPH | ZASLOFF MICHAEL A | Not found | S | Common Stock | 9389 | $47.06 | 24,437.0000 | 53,001,000 | 27.76% | 0.02% |
| March 5, 2024 | Amphastar Pharmaceuticals, Inc. | $AMPH | ZASLOFF MICHAEL A | Not found | S | Common Stock | 3111 | $47.53 | 21,326.0000 | 53,001,000 | 12.73% | 0.01% |
| Aug. 15, 2023 | Amphastar Pharmaceuticals, Inc. | $AMPH | ZASLOFF MICHAEL A | Director | S | Common Stock | 12759 | $57.22 | 33,826.0000 | 53,102,000 | 27.39% | 0.02% |
| June 5, 2023 | Amphastar Pharmaceuticals, Inc. | $AMPH | ZASLOFF MICHAEL A | Director | A | Common Stock | 2716 | $0.00 | 46,585.0000 | 51,970,000 | 6.19% | 0.01% |
| June 5, 2023 | Amphastar Pharmaceuticals, Inc. | $AMPH | ZASLOFF MICHAEL A | Director | A | Stock Option (right to buy) | 7016 | $0.00 | 7,016.0000 | 51,970,000 | 9999.99% | 0.01% |
| May 15, 2023 | Amphastar Pharmaceuticals, Inc. | $AMPH | ZASLOFF MICHAEL A | Director | S | Common Stock | 7500 | $42.18 | 43,869.0000 | 51,970,000 | 14.60% | 0.01% |