211 filings
Page 4 of 11
DEFA14A
shlkj0tdzyzn
14 Apr 21
Additional proxy soliciting materials
4:14pm
S-8
wuzgmtsu
15 Mar 21
Registration of securities for employees
4:40pm
8-K
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15 Mar 21
Amphastar Pharmaceuticals Reports Financial Results for the Three Months and Full-Year Ended December 31, 2020
4:14pm
8-K
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12 Jan 21
Regulation FD Disclosure
4:05pm
8-K
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6 Nov 20
Departure of Directors or Certain Officers
4:18pm
8-K
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6 Nov 20
Amphastar Pharmaceuticals Reports Financial Results for the Three Months Ended September 30, 2020
7:00am
8-K/A
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10 Aug 20
Submission of Matters to a Vote of Security Holders
4:07pm
8-K
8uyoz1f 56wvn
6 Aug 20
Amphastar Pharmaceuticals Reports Financial Results for the Three Months Ended June 30, 2020
4:11pm
8-K
unvp3cv5l4r podgaa
9 Jun 20
Submission of Matters to a Vote of Security Holders
4:10pm
8-K
kmg6dl3j1682dzd
7 May 20
Results of Operations and Financial Condition
4:20pm
DEFA14A
go1z0ppyj zsa4k4
15 Apr 20
Additional proxy soliciting materials
4:34pm
8-K/A
jfw1vmicefsaz0pbv5aq
14 Apr 20
Amphastar Pharmaceuticals, Inc. Announces Simplification of Management Structure
6:39am
8-K
r859nio5jr
13 Apr 20
Amphastar Pharmaceuticals, Inc. Announces Simplification of Management Structure
5:20pm
S-8
zoyy8
16 Mar 20
Registration of securities for employees
5:27pm