210 filings
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
AMPH
Amphastar Pharmaceuticals Inc
29 Feb 24
Registration of securities for employees
4:53pm
8-K
1x2s pj7f
28 Feb 24
Amphastar Pharmaceuticals Reports Financial Results for the Three Months and Full-Year Ended December 31, 2023
4:38pm
8-K
0269ws261 mwvjc9
8 Nov 23
Amphastar Pharmaceuticals Reports Financial Results for the Three Months Ended September 30, 2023
4:14pm
8-K
r4jp4ldpsg lv
15 Sep 23
Amphastar Pharmaceuticals Announces Proposed Private Offering of $300.0 Million of Convertible Senior Notes
4:11pm
8-K/A
z3pssht
16 Aug 23
Abbreviated Financial Statements
5:24pm
8-K
pnodw
8 Aug 23
Amphastar Pharmaceuticals Reports Financial Results for the Three Months Ended June 30, 2023
4:17pm
8-K
zdukwt03
30 Jun 23
Amphastar Pharmaceuticals Completes Acquisition of BAQSIMI from Lilly
4:21pm
8-K
losb0h1ft
5 Jun 23
Submission of Matters to a Vote of Security Holders
6:32pm
8-K
xmhf67
9 May 23
Amphastar Pharmaceuticals Reports Financial Results for the Three Months Ended March 31, 2023
4:19pm
8-K
n04w 97oe
24 Apr 23
Entry into a Material Definitive Agreement
7:17am
ARS
3jf0b9
14 Apr 23
Annual report to shareholders
4:21pm
DEFA14A
tw9nagj scrg9
14 Apr 23
Additional proxy soliciting materials
4:17pm