211 filings
8-K
AMPH
Amphastar Pharmaceuticals Inc
8 May 24
Amphastar Pharmaceuticals Reports Financial Results for the Three Months Ended March 31, 2024
4:18pm
DEFA14A
AMPH
Amphastar Pharmaceuticals Inc
19 Apr 24
Additional proxy soliciting materials
4:21pm
ARS
2023 FY
AMPH
Amphastar Pharmaceuticals Inc
12 Apr 24
Annual report to shareholders
4:20pm
DEFA14A
AMPH
Amphastar Pharmaceuticals Inc
12 Apr 24
Additional proxy soliciting materials
4:14pm
DEF 14A
AMPH
Amphastar Pharmaceuticals Inc
Definitive proxy
12 Apr 24
4:08pm
S-8
2r8id
29 Feb 24
Registration of securities for employees
4:53pm
8-K
atl3qlr0b9fv086gg3
28 Feb 24
Amphastar Pharmaceuticals Reports Financial Results for the Three Months and Full-Year Ended December 31, 2023
4:38pm
8-K
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8 Nov 23
Amphastar Pharmaceuticals Reports Financial Results for the Three Months Ended September 30, 2023
4:14pm
8-K
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15 Sep 23
Amphastar Pharmaceuticals Announces Proposed Private Offering of $300.0 Million of Convertible Senior Notes
4:11pm
8-K/A
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16 Aug 23
Abbreviated Financial Statements
5:24pm
8-K
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8 Aug 23
Amphastar Pharmaceuticals Reports Financial Results for the Three Months Ended June 30, 2023
4:17pm
8-K
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30 Jun 23
Amphastar Pharmaceuticals Completes Acquisition of BAQSIMI from Lilly
4:21pm
8-K
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5 Jun 23
Submission of Matters to a Vote of Security Holders
6:32pm
8-K
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9 May 23
Amphastar Pharmaceuticals Reports Financial Results for the Three Months Ended March 31, 2023
4:19pm
8-K
ke19i493
24 Apr 23
Entry into a Material Definitive Agreement
7:17am
ARS
j9lch
14 Apr 23
Annual report to shareholders
4:21pm