Luo Mary Z.

Related Filers (3)

Other (3)

144
Wednesday, 1/10/2024
Filing for proposed sale of securities under Rule 144
144
Tuesday, 1/9/2024
Filing for proposed sale of securities under Rule 144
144
Monday, 1/8/2024
Filing for proposed sale of securities under Rule 144
Show More

Ownership (48)

4
Thursday, 1/11/2024
Amphastar Pharmaceuticals, Inc.: Statement of changes in beneficial ownership of securities
4
Wednesday, 1/10/2024
Amphastar Pharmaceuticals, Inc.: Statement of changes in beneficial ownership of securities
4
Monday, 3/20/2023
Amphastar Pharmaceuticals, Inc.: Statement of changes in beneficial ownership of securities
4
Friday, 3/17/2023
Amphastar Pharmaceuticals, Inc.: Statement of changes in beneficial ownership of securities
4
Wednesday, 3/8/2023
Amphastar Pharmaceuticals, Inc.: Statement of changes in beneficial ownership of securities
4
Monday, 5/23/2022
Amphastar Pharmaceuticals, Inc.: Statement of changes in beneficial ownership of securities
4
Friday, 5/20/2022
Amphastar Pharmaceuticals, Inc.: Statement of changes in beneficial ownership of securities
4
Wednesday, 5/18/2022
Amphastar Pharmaceuticals, Inc.: Statement of changes in beneficial ownership of securities
4
Friday, 3/18/2022
Amphastar Pharmaceuticals, Inc.: Statement of changes in beneficial ownership of securities
4
Thursday, 3/17/2022
Amphastar Pharmaceuticals, Inc.: Statement of changes in beneficial ownership of securities
4
Thursday, 3/18/2021
Amphastar Pharmaceuticals, Inc.: Statement of changes in beneficial ownership of securities
4
Wednesday, 3/17/2021
Amphastar Pharmaceuticals, Inc.: Statement of changes in beneficial ownership of securities
4
Thursday, 2/18/2021
Amphastar Pharmaceuticals, Inc.: Statement of changes in beneficial ownership of securities
4
Friday, 2/12/2021
Amphastar Pharmaceuticals, Inc.: Statement of changes in beneficial ownership of securities
4
Tuesday, 2/9/2021
Amphastar Pharmaceuticals, Inc.: Statement of changes in beneficial ownership of securities
4
Friday, 2/5/2021
Amphastar Pharmaceuticals, Inc.: Statement of changes in beneficial ownership of securities
4
Wednesday, 2/3/2021
Amphastar Pharmaceuticals, Inc.: Statement of changes in beneficial ownership of securities
4
Wednesday, 3/18/2020
Amphastar Pharmaceuticals, Inc.: Statement of changes in beneficial ownership of securities
4
Tuesday, 3/17/2020
Amphastar Pharmaceuticals, Inc.: Statement of changes in beneficial ownership of securities
4
Thursday, 9/12/2019
Amphastar Pharmaceuticals, Inc.: Statement of changes in beneficial ownership of securities
4
Monday, 3/18/2019
Amphastar Pharmaceuticals, Inc.: Statement of changes in beneficial ownership of securities
4
Monday, 12/17/2018
Amphastar Pharmaceuticals, Inc.: Statement of changes in beneficial ownership of securities
4
Thursday, 12/13/2018
Amphastar Pharmaceuticals, Inc.: Statement of changes in beneficial ownership of securities
4
Tuesday, 7/3/2018
Amphastar Pharmaceuticals, Inc.: Statement of changes in beneficial ownership of securities
4
Thursday, 5/17/2018
Amphastar Pharmaceuticals, Inc.: Statement of changes in beneficial ownership of securities
4
Wednesday, 3/28/2018
Amphastar Pharmaceuticals, Inc.: Statement of changes in beneficial ownership of securities
4
Tuesday, 3/20/2018
Amphastar Pharmaceuticals, Inc.: Statement of changes in beneficial ownership of securities
4
Friday, 3/16/2018
Amphastar Pharmaceuticals, Inc.: Statement of changes in beneficial ownership of securities
4
Tuesday, 12/19/2017
Amphastar Pharmaceuticals, Inc.: Statement of changes in beneficial ownership of securities
4
Tuesday, 11/14/2017
Amphastar Pharmaceuticals, Inc.: Statement of changes in beneficial ownership of securities
4
Friday, 9/15/2017
Amphastar Pharmaceuticals, Inc.: Statement of changes in beneficial ownership of securities
4
Thursday, 5/25/2017
Amphastar Pharmaceuticals, Inc.: Statement of changes in beneficial ownership of securities
4
Tuesday, 3/28/2017
Amphastar Pharmaceuticals, Inc.: Statement of changes in beneficial ownership of securities
4
Monday, 3/20/2017
Amphastar Pharmaceuticals, Inc.: Statement of changes in beneficial ownership of securities
4
Thursday, 9/22/2016
Amphastar Pharmaceuticals, Inc.: Statement of changes in beneficial ownership of securities
4
Tuesday, 3/29/2016
Amphastar Pharmaceuticals, Inc.: Statement of changes in beneficial ownership of securities
4
Monday, 3/21/2016
Amphastar Pharmaceuticals, Inc.: Statement of changes in beneficial ownership of securities
4/A
Wednesday, 2/3/2016
Amphastar Pharmaceuticals, Inc.: Statement of changes in beneficial ownership of securities
4/A
Wednesday, 2/3/2016
Amphastar Pharmaceuticals, Inc.: Statement of changes in beneficial ownership of securities
4
Friday, 12/11/2015
Amphastar Pharmaceuticals, Inc.: Statement of changes in beneficial ownership of securities
4
Tuesday, 12/8/2015
Amphastar Pharmaceuticals, Inc.: Statement of changes in beneficial ownership of securities
4
Thursday, 12/3/2015
Amphastar Pharmaceuticals, Inc.: Statement of changes in beneficial ownership of securities
4
Wednesday, 8/19/2015
Amphastar Pharmaceuticals, Inc.: Statement of changes in beneficial ownership of securities
4
Wednesday, 6/17/2015
Amphastar Pharmaceuticals, Inc.: Statement of changes in beneficial ownership of securities
4
Friday, 6/12/2015
Amphastar Pharmaceuticals, Inc.: Statement of changes in beneficial ownership of securities
4
Tuesday, 6/9/2015
Amphastar Pharmaceuticals, Inc.: Statement of changes in beneficial ownership of securities
4
Monday, 3/30/2015
Amphastar Pharmaceuticals, Inc.: Statement of changes in beneficial ownership of securities
3
Tuesday, 6/24/2014
Amphastar Pharmaceuticals, Inc.: Initial statement of beneficial ownership of securities
Show More