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AMPH   Amphastar Pharmaceuticals, Inc.   |  1297184

Available Fillings Total Fillings:844
Form Type Form Count
8-K 87
UPLOAD 9
10-Q 32
S-8 11
CORRESP 10
8-A12B 1
RW 1
CT ORDER 3
3/A 1
SC 13G 6
DRS 1
DRSLTR 1
8-K/A 3
ARS 4
10-K 10
4/A 3
S-1MEF 1
S-1/A 10
144 46
SC 13G/A 26
DEFA14A 14
424B4 1
FWP 1
DRS/A 3
REGDEX 1
4 517
DEF 14A 11
3 19
EFFECT 4
S-1 2
S-3 3
CERTNAS 1
PRE 14A 1
Financials Total:132
Form Type Act Filing Date Report Date Action
8-K 34 09/18/2025 09/15/2025 |    |  
8-K 34 08/12/2025 08/08/2025 |    |  
10-Q 34 08/07/2025 06/30/2025 |    |  
8-K 34 08/07/2025 08/07/2025 |    |  
8-K 34 07/21/2025 07/18/2025 |    |  
10-K 34 03/03/2025 12/31/2024 |    |  
8-K 34 02/27/2025 02/27/2025 |    |  
10-Q 34 11/07/2024 09/30/2024 |    |  
8-K 34 11/06/2024 11/06/2024 |    |  
8-K 34 08/30/2024 08/28/2024 |    |  
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Ipos Total:24
Form Type Act Filing Date Report Date Action
CORRESP 11/17/2021 09/19/2025
UPLOAD 11/15/2021 09/19/2025
S-3 33 11/09/2021 09/19/2025
CORRESP 11/16/2018 09/19/2025
UPLOAD 11/15/2018 09/19/2025
S-3 33 11/09/2018 09/19/2025
UPLOAD 11/03/2016 09/19/2025
CORRESP 10/14/2016 09/19/2025
UPLOAD 09/27/2016 09/19/2025
CORRESP 07/14/2015 09/19/2025
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Form Type Act Filing Date Report Date Action
4 08/04/2025 08/01/2025
4 07/22/2025 07/18/2025
3 07/22/2025 07/18/2025
4 07/03/2025 07/02/2025
4 06/04/2025 06/02/2025
4 06/04/2025 06/02/2025
4 06/04/2025 06/02/2025
4 06/04/2025 06/02/2025
4 06/04/2025 06/02/2025
4 06/04/2025 06/02/2025
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Form Type Act Filing Date Report Date Action
DEF 14A 34 04/14/2025 06/02/2025
DEF 14A 34 04/12/2024 06/03/2024
DEF 14A 34 04/14/2023 09/19/2025
DEF 14A 34 04/14/2022 06/10/2022
DEF 14A 34 04/14/2021 06/07/2021
SC 13G 34 02/12/2021 09/19/2025
DEF 14A 34 04/15/2020 06/08/2020
SC 13G 34 02/11/2020 09/19/2025
DEF 14A 34 04/18/2019 06/12/2019
DEF 14A 34 04/18/2018 06/07/2018
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Form Type Act Filing Date Report Date Action
8-K 34 09/18/2025 09/15/2025 |    |  
8-K 34 08/12/2025 08/08/2025 |    |  
8-K 34 08/07/2025 08/07/2025 |    |  
8-K 34 07/21/2025 07/18/2025 |    |  
8-K 34 02/27/2025 02/27/2025 |    |  
8-K 34 11/06/2024 11/06/2024 |    |  
8-K 34 08/30/2024 08/28/2024 |    |  
8-K 34 06/04/2024 06/03/2024 |    |  
8-K 34 05/08/2024 05/08/2024 |    |  
8-K 34 02/28/2024 02/28/2024 |    |  
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Form Type Act Filing Date Report Date Action
DEF 14A 34 04/14/2025 06/02/2025
PRE 14A 34 04/02/2025 06/02/2025
DEF 14A 34 04/12/2024 06/03/2024
DEF 14A 34 04/14/2023 09/19/2025
DEF 14A 34 04/14/2022 06/10/2022
DEF 14A 34 04/14/2021 06/07/2021
DEF 14A 34 04/15/2020 06/08/2020
DEF 14A 34 04/18/2019 06/12/2019
DEF 14A 34 04/18/2018 06/07/2018
DEF 14A 34 04/21/2017 06/08/2017
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Form Type Act Filing Date Report Date Action
S-1/A 33 06/18/2014 09/19/2025
S-1/A 33 06/13/2014 09/19/2025
S-1/A 33 06/05/2014 09/19/2025
S-1 33 05/20/2014 09/19/2025
S-1/A 33 04/03/2006 09/19/2025
S-1/A 33 11/23/2005 09/19/2025
S-1/A 33 10/27/2005 09/19/2025
S-1/A 33 08/15/2005 09/19/2025
S-1/A 33 07/01/2005 09/19/2025
S-1/A 33 06/23/2005 09/19/2025
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