NasdaqGS - Delayed Quote USD
Amphastar Pharmaceuticals, Inc. (AMPH)
24.19
+0.12
+(0.50%)
At close: April 25 at 4:00:02 PM EDT
24.30
+0.11
+(0.47%)
Pre-Market: 8:00:46 AM EDT
Insider Purchases Last 6 Months
| Shares | Transactions | |
|---|---|---|
| Purchases | 1,055,121 | 15 |
| Sales | 55,264 | 9 |
| Net Shares Purchased (Sold) | 999,857 | 24 |
| Total Insider Shares Held | 10.97M | -- |
| % Net Shares Purchased (Sold) | 10.00% | -- |
Net Institutional Purchases Prior Quarter to Latest Quarter
| Shares | |
|---|---|
| Net Shares Purchased (Sold) | -- |
| % Change in Institutional Shares Held | -- |
Insider Transactions Reported - Last Two Years
| Insider | Transaction | Type | Value | Date |
|---|---|---|---|---|
| PETERSEN FLOYD F Director | Sale at price 28.38 per share. | Direct | 14,190 | Apr 1, 2025 |
| ZHANG JACK YONGFENG Chief Executive Officer | Conversion of Exercise of derivative security at price 14.69 per share. | Indirect | 7,369,826 | Mar 14, 2025 |
| PETERS WILLIAM J Chief Financial Officer | Stock Award(Grant) at price 0.00 per share. | Direct | 0 | Mar 10, 2025 |
| ZHANG JACK YONGFENG Chief Executive Officer | Stock Award(Grant) at price 0.00 per share. | Indirect | 0 | Mar 10, 2025 |
| ZHOU RONG Officer | Stock Award(Grant) at price 0.00 per share. | Direct | 0 | Mar 10, 2025 |
| LIAWATIDEWI YAKOB Officer and Director | Stock Award(Grant) at price 0.00 per share. | Direct | 0 | Mar 10, 2025 |
| PETERSEN FLOYD F Director | Sale at price 27.99 per share. | Direct | 27,986 | Mar 6, 2025 |
| PETERS WILLIAM J Chief Financial Officer | Sale at price 27.54 per share. | Direct | 116,515 | Mar 4, 2025 |
| PETERS WILLIAM J Chief Financial Officer | Conversion of Exercise of derivative security at price 13.35 per share. | Direct | 99,992 | Mar 4, 2025 |
| ZHOU RONG Officer | Sale at price 44.42 - 45.23 per share. | Direct | 672,815 | Dec 13, 2024 |
| ZHOU RONG Officer | Conversion of Exercise of derivative security at price 11.33 per share. | Direct | 169,950 | Dec 13, 2024 |
| PRINS RICHARD K Director | Stock Gift at price 0.00 per share. | Direct | 0 | Dec 9, 2024 |
| PRINS RICHARD K Director | Sale at price 43.77 per share. | Direct | 437,702 | Dec 9, 2024 |
| PRINS RICHARD K Director | Conversion of Exercise of derivative security at price 19.52 per share. | Direct | 195,200 | Dec 9, 2024 |
| PRINS RICHARD K Director | Stock Gift at price 0.00 per share. | Direct | 0 | Nov 12, 2024 |
| PRINS RICHARD K Director | Sale at price 48.80 per share. | Direct | 243,986 | Nov 12, 2024 |
| PRINS RICHARD K Director | Conversion of Exercise of derivative security at price 16.69 per share. | Direct | 41,725 | Nov 12, 2024 |
| ZHOU RONG Officer | Sale at price 48.88 per share. | Direct | 336,930 | Nov 12, 2024 |
| ZHOU RONG Officer | Conversion of Exercise of derivative security at price 14.95 per share. | Direct | 103,050 | Nov 12, 2024 |
| ZHANG JACK YONGFENG Chief Executive Officer | Stock Gift at price 0.00 per share. | Indirect | 0 | Nov 11, 2024 |
| PETERS WILLIAM J Chief Financial Officer | Sale at price 52.05 per share. | Direct | 386,523 | Nov 6, 2024 |
| PETERS WILLIAM J Chief Financial Officer | Conversion of Exercise of derivative security at price 13.03 per share. | Direct | 96,761 | Nov 6, 2024 |
| LIAWATIDEWI YAKOB Officer and Director | Sale at price 52.05 per share. | Direct | 271,389 | Nov 6, 2024 |
| LIAWATIDEWI YAKOB Officer and Director | Conversion of Exercise of derivative security at price 13.03 per share. | Direct | 67,938 | Nov 6, 2024 |
| ZHANG JACK YONGFENG Chief Executive Officer | Conversion of Exercise of derivative security at price 14.69 per share. | Direct | 1,469,000 | Sep 13, 2024 |
| ZHOU RONG Officer | Sale at price 48.26 per share. | Direct | 144,784 | Sep 13, 2024 |
| ZHOU RONG Officer | Conversion of Exercise of derivative security at price 14.95 per share. | Direct | 44,850 | Sep 13, 2024 |
| PETERSEN FLOYD F Director | Sale at price 46.47 per share. | Direct | 139,417 | Sep 5, 2024 |
| ZHOU RONG Officer | Sale at price 48.35 per share. | Direct | 193,400 | Aug 26, 2024 |
| ZHOU RONG Officer | Conversion of Exercise of derivative security at price 14.95 per share. | Direct | 59,800 | Aug 26, 2024 |
| PRINS RICHARD K Director | Sale at price 43.07 per share. | Direct | 736,550 | Aug 12, 2024 |
| PRINS RICHARD K Director | Conversion of Exercise of derivative security at price 19.52 - 20.08 per share. | Direct | 339,170 | Aug 12, 2024 |
| PETERS WILLIAM J Chief Financial Officer | Sale at price 44.23 per share. | Direct | 454,773 | Jul 31, 2024 |
| PETERS WILLIAM J Chief Financial Officer | Conversion of Exercise of derivative security at price 20.23 per share. | Direct | 208,005 | Jul 31, 2024 |
| PETERS WILLIAM J Chief Financial Officer | Sale at price 40.85 - 41.29 per share. | Direct | 147,169 | Jun 27, 2024 |
| ZHANG JACK YONGFENG Chief Executive Officer | Conversion of Exercise of derivative security at price 14.69 per share. | Direct | 1,469,000 | Jun 10, 2024 |
| PETERSEN FLOYD F Director | Sale at price 41.40 per share. | Direct | 124,200 | Jun 10, 2024 |
| ZASLOFF MICHAEL A Director | Stock Award(Grant) at price 0.00 per share. | Direct | 0 | Jun 3, 2024 |
| PRINS RICHARD K Director | Stock Award(Grant) at price 0.00 per share. | Direct | 0 | Jun 3, 2024 |
| LEE HOWARD S Director | Stock Award(Grant) at price 0.00 per share. | Direct | 0 | Jun 3, 2024 |
| PETERSEN FLOYD F Director | Stock Award(Grant) at price 0.00 per share. | Direct | 0 | Jun 3, 2024 |
| PETERSEN FLOYD F Director | Sale at price 42.65 per share. | Direct | 21,326 | Jun 3, 2024 |
| GERST DIANE G. Director | Stock Award(Grant) at price 0.00 per share. | Direct | 0 | Jun 3, 2024 |
| DEFLIN GAYLE Director | Stock Award(Grant) at price 0.00 per share. | Direct | 0 | Jun 3, 2024 |
| PETERSEN FLOYD F Director | Sale at price 41.67 per share. | Direct | 20,837 | May 1, 2024 |
| PETERSEN FLOYD F Director | Sale at price 43.43 per share. | Direct | 21,714 | Apr 1, 2024 |
| ZHANG JACK YONGFENG Chief Executive Officer | Conversion of Exercise of derivative security at price 12.46 per share. | Indirect | 12,870,881 | Mar 15, 2024 |
| PETERS WILLIAM J Chief Financial Officer | Sale at price 46.30 - 48.00 per share. | Direct | 842,883 | Mar 6, 2024 |
| PETERS WILLIAM J Chief Financial Officer | Conversion of Exercise of derivative security at price 11.33 per share. | Direct | 99,999 | Mar 6, 2024 |
| ZASLOFF MICHAEL A Director | Sale at price 47.06 - 47.53 per share. | Direct | 589,724 | Mar 5, 2024 |
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