05/02/2024 3:56 PM | Amphastar Pharmaceuticals (Issuer) Petersen Floyd F. (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
04/19/2024 3:21 PM | Amphastar Pharmaceuticals (Filer)
| Form DEFA14A | |
04/12/2024 3:08 PM | Amphastar Pharmaceuticals (Filer)
| Form DEF 14A | |
04/12/2024 3:08 PM | Amphastar Pharmaceuticals (Filer)
| Form DEF 14A | |
04/12/2024 3:14 PM | Amphastar Pharmaceuticals (Filer)
| Form DEFA14A | |
04/12/2024 3:14 PM | Amphastar Pharmaceuticals (Filer)
| Form DEFA14A | |
04/02/2024 8:31 PM | Amphastar Pharmaceuticals (Issuer) Petersen Floyd F. (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
|
03/19/2024 5:55 PM | Amphastar Pharmaceuticals (Issuer) Luo Mary Z. (Reporting) Zhang Jack Y. (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
03/08/2024 3:47 PM | Amphastar Pharmaceuticals (Issuer) Zhou Rong (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
03/08/2024 3:49 PM | Amphastar Pharmaceuticals (Issuer) Liawatidewi Yakob (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
03/08/2024 3:52 PM | Amphastar Pharmaceuticals (Issuer) PETERS WILLIAM J (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
03/08/2024 3:32 PM | Amphastar Pharmaceuticals (Issuer) Luo Mary Z. (Reporting) Zhang Jack Y. (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
03/06/2024 4:54 PM | Amphastar Pharmaceuticals (Issuer) Liawatidewi Yakob (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
03/06/2024 4:57 PM | Amphastar Pharmaceuticals (Issuer) ZASLOFF MICHAEL A (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
03/06/2024 5:29 PM | Amphastar Pharmaceuticals (Issuer) Luo Mary Z. (Reporting) Zhang Jack Y. (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
03/06/2024 4:49 PM | Amphastar Pharmaceuticals (Issuer) PETERS WILLIAM J (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
03/06/2024 4:51 PM | Amphastar Pharmaceuticals (Issuer) Zhou Rong (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
03/06/2024 9:23 AM | Amphastar Pharmaceuticals (Subject) FEDERATED HERMES, INC. (Filed by) FEDERATED HERMES, INC. (Filed by)
| Form SC 13G/A | |
03/05/2024 12:21 PM | Amphastar Pharmaceuticals (Subject) ZASLOFF MICHAEL A (Reporting)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
03/04/2024 7:35 PM | Amphastar Pharmaceuticals (Issuer) Petersen Floyd F. (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
02/29/2024 3:53 PM | Amphastar Pharmaceuticals (Filer)
| Form S-8 Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans | |
02/28/2024 3:38 PM | Amphastar Pharmaceuticals (Filer)
| Form 8-K Current report pursuant to Section 13 or 15(d) | |
02/09/2024 4:21 PM | Amphastar Pharmaceuticals (Subject) Zhang Jack Y. (Filed by)
| Form SC 13G/A | |
02/02/2024 6:37 PM | Amphastar Pharmaceuticals (Issuer) Petersen Floyd F. (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
01/23/2024 10:53 AM | Amphastar Pharmaceuticals (Subject) BlackRock Inc. (Filed by)
| Form SC 13G/A | |
01/17/2024 1:36 PM | Amphastar Pharmaceuticals (Subject) FEDERATED HERMES, INC. (Filed by) FEDERATED HERMES, INC. (Filed by)
| Form SC 13G/A | |
01/11/2024 3:37 PM | Amphastar Pharmaceuticals (Issuer) Luo Mary Z. (Reporting) Zhang Jack Y. (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
01/10/2024 5:27 PM | Amphastar Pharmaceuticals (Issuer) Luo Mary Z. (Reporting) Zhang Jack Y. (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
01/10/2024 3:25 PM | Amphastar Pharmaceuticals (Subject) Luo Mary Z. (Reporting)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
01/09/2024 3:22 PM | Amphastar Pharmaceuticals (Subject) Luo Mary Z. (Reporting)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
01/08/2024 3:23 PM | Amphastar Pharmaceuticals (Subject) Luo Mary Z. (Reporting)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
01/03/2024 6:25 PM | Amphastar Pharmaceuticals (Issuer) Petersen Floyd F. (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
12/05/2023 5:25 PM | Amphastar Pharmaceuticals (Issuer) Zhou Rong (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
12/04/2023 7:49 PM | Amphastar Pharmaceuticals (Issuer) Petersen Floyd F. (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
12/01/2023 3:11 PM | Amphastar Pharmaceuticals (Subject) Petersen Floyd F. (Reporting)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
11/20/2023 4:23 PM | Amphastar Pharmaceuticals (Issuer) PRINS RICHARD K (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
11/17/2023 11:34 AM | Amphastar Pharmaceuticals (Subject) Zhou Rong (Reporting)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
11/15/2023 3:30 PM | Amphastar Pharmaceuticals (Issuer) Deflin Gayle (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
11/15/2023 3:31 PM | Amphastar Pharmaceuticals (Issuer) PRINS RICHARD K (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
11/13/2023 11:38 AM | Amphastar Pharmaceuticals (Subject) PRINS RICHARD K (Reporting)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
11/13/2023 11:38 AM | Amphastar Pharmaceuticals (Subject) Deflin Gayle (Reporting)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
$21,000 in profits in six weeks? (Ad) On Wednesday, May 8, the legendary Jonathan Rose is holding his first ever Masters in Trading Summit.
Jonathan is one of the sharpest traders I’ve ever met. He made millions trading in the pits of the world’s largest exchanges. Click here for details. |
11/02/2023 7:37 PM | Amphastar Pharmaceuticals (Issuer) Petersen Floyd F. (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
10/03/2023 5:38 PM | Amphastar Pharmaceuticals (Issuer) Petersen Floyd F. (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
10/02/2023 3:01 PM | Amphastar Pharmaceuticals (Subject) Petersen Floyd F. (Reporting)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
09/15/2023 3:11 PM | Amphastar Pharmaceuticals (Filer)
| Form 8-K Current report pursuant to Section 13 or 15(d) | |
08/29/2023 5:54 PM | Amphastar Pharmaceuticals (Issuer) Liawatidewi Yakob (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
08/16/2023 7:22 PM | Amphastar Pharmaceuticals (Issuer) PRINS RICHARD K (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
08/16/2023 7:23 PM | Amphastar Pharmaceuticals (Issuer) ZASLOFF MICHAEL A (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
08/16/2023 4:24 PM | Amphastar Pharmaceuticals (Filer)
| Form 8-K/A | |
08/15/2023 1:14 PM | Amphastar Pharmaceuticals (Subject) PRINS RICHARD K (Reporting)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
08/15/2023 11:54 AM | Amphastar Pharmaceuticals (Subject) ZASLOFF MICHAEL A (Reporting)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
06/30/2023 3:21 PM | Amphastar Pharmaceuticals (Filer)
| Form 8-K Current report pursuant to Section 13 or 15(d) | |
06/21/2023 4:05 PM | Amphastar Pharmaceuticals (Issuer) Zhou Rong (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
06/20/2023 3:05 PM | Amphastar Pharmaceuticals (Issuer) Zhou Rong (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
06/14/2023 4:36 PM | Amphastar Pharmaceuticals (Issuer) Zhou Rong (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
06/07/2023 7:12 PM | Amphastar Pharmaceuticals (Issuer) Petersen Floyd F. (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
06/07/2023 7:13 PM | Amphastar Pharmaceuticals (Issuer) PRINS RICHARD K (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
06/07/2023 5:24 PM | Amphastar Pharmaceuticals (Issuer) Gerst Diane G. (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
06/07/2023 4:18 PM | Amphastar Pharmaceuticals (Issuer) Deflin Gayle (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
06/07/2023 4:19 PM | Amphastar Pharmaceuticals (Issuer) Lee Howard (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
06/07/2023 4:20 PM | Amphastar Pharmaceuticals (Issuer) ZASLOFF MICHAEL A (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
06/06/2023 5:49 PM | Amphastar Pharmaceuticals (Issuer) Liawatidewi Yakob (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
06/01/2023 11:27 AM | Amphastar Pharmaceuticals (Subject) Lee Howard (Reporting)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
05/22/2023 5:49 PM | Amphastar Pharmaceuticals (Issuer) PETERS WILLIAM J (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
05/19/2023 5:30 PM | Amphastar Pharmaceuticals (Issuer) Deflin Gayle (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
05/19/2023 5:36 PM | Amphastar Pharmaceuticals (Issuer) Zhou Rong (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
05/18/2023 2:37 PM | Amphastar Pharmaceuticals (Subject) PETERS WILLIAM J (Reporting)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
05/17/2023 2:28 PM | Amphastar Pharmaceuticals (Subject) Petersen Floyd F. (Reporting)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
05/17/2023 11:46 AM | Amphastar Pharmaceuticals (Subject) Zhou Rong (Reporting)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
05/16/2023 6:59 PM | Amphastar Pharmaceuticals (Issuer) PRINS RICHARD K (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
05/16/2023 7:01 PM | Amphastar Pharmaceuticals (Issuer) ZASLOFF MICHAEL A (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
05/15/2023 12:39 PM | Amphastar Pharmaceuticals (Subject) ZASLOFF MICHAEL A (Reporting)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
05/12/2023 10:22 AM | Amphastar Pharmaceuticals (Subject) PRINS RICHARD K (Reporting)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |