NASDAQ:AMPH - Amphastar Pharmaceuticals SEC Filings & 10K Form

$19.93
-0.10 (-0.50 %)
(As of 07/18/2019 01:01 PM ET)
Today's Range
$19.84
Now: $19.93
$20.03
50-Day Range
$18.85
MA: $20.26
$21.36
52-Week Range
$16.18
Now: $19.93
$25.43
Volume2,167 shs
Average Volume171,607 shs
Market Capitalization$937.91 million
P/E Ratio95.00
Dividend YieldN/A
Beta1.39

SEC Filings

Amphastar Pharmaceuticals (NASDAQ:AMPH) SEC Filings

DateFilerForm TypeView
07/12/2019
6:05 PM
Amphastar Pharmaceuticals (Issuer)
Shandell Jason B. (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
06/18/2019
8:29 PM
Amphastar Pharmaceuticals (Filer)
Form 8-K
Current report pursuant to Section 13 or 15(d)  
View Filing
06/17/2019
6:00 PM
Amphastar Pharmaceuticals (Issuer)
Zhou Rong (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
06/17/2019
5:58 PM
Amphastar Pharmaceuticals (Issuer)
Liawatidewi Yakob (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
06/13/2019
7:04 PM
Amphastar Pharmaceuticals (Issuer)
ZASLOFF MICHAEL A (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
06/13/2019
7:02 PM
Amphastar Pharmaceuticals (Issuer)
PRINS RICHARD K (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
06/13/2019
7:00 PM
Amphastar Pharmaceuticals (Issuer)
Petersen Floyd F. (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
06/13/2019
6:58 PM
Amphastar Pharmaceuticals (Issuer)
Lee Howard (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
06/13/2019
6:57 PM
Amphastar Pharmaceuticals (Issuer)
Koo Richard (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
06/13/2019
6:54 PM
Amphastar Pharmaceuticals (Issuer)
Gerst Diane G. (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
06/13/2019
6:51 PM
Amphastar Pharmaceuticals (Issuer)
Gerst Diane G. (Reporting)
Form 3
Initial statement of beneficial ownership of securities  
View Filing
06/13/2019
5:38 AM
Amphastar Pharmaceuticals (Filer)
Form 8-K
Current report pursuant to Section 13 or 15(d)  
View Filing
06/10/2019
3:55 PM
Amphastar Pharmaceuticals (Issuer)
Lee Howard (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
05/07/2019
7:25 PM
Amphastar Pharmaceuticals (Issuer)
Zhou Rong (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
04/18/2019
3:15 PM
Amphastar Pharmaceuticals (Filer)
Form DEFA14A
View Filing
04/18/2019
3:11 PM
Amphastar Pharmaceuticals (Filer)
Form DEF 14A
View Filing
04/18/2019
3:05 PM
Amphastar Pharmaceuticals (Issuer)
Shandell Jason B. (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
03/28/2019
3:58 PM
Amphastar Pharmaceuticals (Issuer)
Zhou Rong (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
03/27/2019
8:56 PM
Amphastar Pharmaceuticals (Issuer)
Liawatidewi Yakob (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
03/27/2019
8:54 PM
Amphastar Pharmaceuticals (Issuer)
PETERS WILLIAM J (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
03/27/2019
8:53 PM
Amphastar Pharmaceuticals (Issuer)
Shandell Jason B. (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
03/19/2019
3:05 PM
Amphastar Pharmaceuticals (Issuer)
Liawatidewi Yakob (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
03/19/2019
5:06 AM
Amphastar Pharmaceuticals (Issuer)
PETERS WILLIAM J (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
03/18/2019
7:52 PM
Amphastar Pharmaceuticals (Issuer)
Zhou Rong (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
03/18/2019
6:56 PM
Amphastar Pharmaceuticals (Issuer)
Shandell Jason B. (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
03/18/2019
6:53 PM
Amphastar Pharmaceuticals (Issuer)
Luo Mary Z. (Reporting)
Zhang Jack Y. (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
03/15/2019
3:15 PM
Amphastar Pharmaceuticals (Filer)
Form S-8
Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans  
View Filing
03/14/2019
3:58 PM
Amphastar Pharmaceuticals (Filer)
Form 8-K
Current report pursuant to Section 13 or 15(d)  
View Filing
03/06/2019
4:20 PM
Amphastar Pharmaceuticals (Issuer)
PETERS WILLIAM J (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
03/04/2019
7:44 PM
Amphastar Pharmaceuticals (Issuer)
Zhou Rong (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
03/04/2019
7:43 PM
Amphastar Pharmaceuticals (Issuer)
Zhou Rong (Reporting)
Form 4/A
View Filing
03/01/2019
7:01 PM
Amphastar Pharmaceuticals (Issuer)
Shandell Jason B. (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
02/15/2019
7:09 PM
Amphastar Pharmaceuticals (Issuer)
PETERS WILLIAM J (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
02/15/2019
3:56 PM
Amphastar Pharmaceuticals (Issuer)
Shandell Jason B. (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
02/14/2019
5:30 PM
Amphastar Pharmaceuticals (Issuer)
Liawatidewi Yakob (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
02/13/2019
3:05 PM
Amphastar Pharmaceuticals (Subject)
Zhang Jack Y. (Filed by)
Form SC 13G/A
View Filing
02/06/2019
7:12 PM
Amphastar Pharmaceuticals (Issuer)
Liawatidewi Yakob (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
01/25/2019
3:11 PM
Amphastar Pharmaceuticals (Issuer)
Shandell Jason B. (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
01/24/2019
7:47 PM
Amphastar Pharmaceuticals (Issuer)
Liawatidewi Yakob (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
01/24/2019
12:46 PM
Amphastar Pharmaceuticals (Subject)
BlackRock Inc. (Filed by)
Form SC 13G/A
View Filing
01/16/2019
6:10 PM
Amphastar Pharmaceuticals (Issuer)
Liawatidewi Yakob (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
01/04/2019
4:04 PM
Amphastar Pharmaceuticals (Issuer)
PETERS WILLIAM J (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
12/17/2018
7:05 PM
Amphastar Pharmaceuticals (Issuer)
PRINS RICHARD K (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
12/17/2018
7:02 PM
Amphastar Pharmaceuticals (Issuer)
Luo Mary Z. (Reporting)
Zhang Jack Y. (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
12/13/2018
7:08 PM
Amphastar Pharmaceuticals (Issuer)
Luo Mary Z. (Reporting)
Zhang Jack Y. (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
12/13/2018
7:05 PM
Amphastar Pharmaceuticals (Issuer)
Applied Physics & Chemistry Laboratories, Inc. (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
12/12/2018
7:39 PM
Amphastar Pharmaceuticals (Issuer)
Koo Richard (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
12/12/2018
7:37 PM
Amphastar Pharmaceuticals (Issuer)
Shohet Stephen B. (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
12/07/2018
5:36 PM
Amphastar Pharmaceuticals (Issuer)
Lee Howard (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
12/06/2018
2:56 PM
Amphastar Pharmaceuticals (Issuer)
Zhou Rong (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
12/06/2018
2:54 PM
Amphastar Pharmaceuticals (Issuer)
Shandell Jason B. (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
12/04/2018
8:01 PM
Amphastar Pharmaceuticals (Issuer)
Petersen Floyd F. (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
12/04/2018
8:00 PM
Amphastar Pharmaceuticals (Issuer)
PETERS WILLIAM J (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
12/03/2018
7:08 PM
Amphastar Pharmaceuticals (Issuer)
Liawatidewi Yakob (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
11/30/2018
3:15 PM
Amphastar Pharmaceuticals (Issuer)
PRINS RICHARD K (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
11/29/2018
5:12 PM
Amphastar Pharmaceuticals (Issuer)
Liawatidewi Yakob (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
11/26/2018
7:48 PM
Amphastar Pharmaceuticals (Issuer)
Liawatidewi Yakob (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
11/20/2018
11:15 PM
Amphastar Pharmaceuticals (Filer)
Form EFFECT
View Filing
11/15/2018
6:23 PM
Amphastar Pharmaceuticals (Issuer)
ZASLOFF MICHAEL A (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
11/15/2018
6:21 PM
Amphastar Pharmaceuticals (Issuer)
PRINS RICHARD K (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
11/15/2018
6:20 PM
Amphastar Pharmaceuticals (Issuer)
Shandell Jason B. (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
11/13/2018
4:10 PM
Amphastar Pharmaceuticals (Issuer)
Zhou Rong (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
11/13/2018
4:09 PM
Amphastar Pharmaceuticals (Issuer)
PETERS WILLIAM J (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
11/13/2018
4:08 PM
Amphastar Pharmaceuticals (Issuer)
Liawatidewi Yakob (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
11/09/2018
8:52 PM
Amphastar Pharmaceuticals (Issuer)
Shandell Jason B. (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
11/09/2018
3:26 PM
Amphastar Pharmaceuticals (Filer)
Form S-3
Registration statement under Securities Act of 1933  
View Filing
11/08/2018
3:30 PM
Amphastar Pharmaceuticals (Filer)
Form 8-K
Current report pursuant to Section 13 or 15(d)  
View Filing
11/08/2018
5:03 AM
Amphastar Pharmaceuticals (Filer)
Form 8-K
Current report pursuant to Section 13 or 15(d)  
View Filing
08/15/2018
3:29 PM
Amphastar Pharmaceuticals (Issuer)
PRINS RICHARD K (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
08/08/2018
3:24 PM
Amphastar Pharmaceuticals (Filer)
Form 8-K
Current report pursuant to Section 13 or 15(d)  
View Filing
07/12/2018
4:53 PM
Amphastar Pharmaceuticals (Issuer)
Shandell Jason B. (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
07/11/2018
3:03 PM
Amphastar Pharmaceuticals (Issuer)
PETERS WILLIAM J (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
07/09/2018
3:09 PM
Amphastar Pharmaceuticals (Filer)
Form 8-K
Current report pursuant to Section 13 or 15(d)  
View Filing
07/03/2018
4:06 PM
Amphastar Pharmaceuticals (Issuer)
Luo Mary Z. (Reporting)
Zhang Jack Y. (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
06/18/2018
3:59 PM
Amphastar Pharmaceuticals (Issuer)
Zhou Rong (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
06/18/2018
3:57 PM
Amphastar Pharmaceuticals (Issuer)
Liawatidewi Yakob (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
06/18/2018
3:56 PM
Amphastar Pharmaceuticals (Issuer)
Liawatidewi Yakob (Reporting)
Form 3
Initial statement of beneficial ownership of securities  
View Filing
06/13/2018
3:05 PM
Amphastar Pharmaceuticals (Issuer)
ZASLOFF MICHAEL A (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
06/11/2018
7:17 PM
Amphastar Pharmaceuticals (Issuer)
ZASLOFF MICHAEL A (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
06/11/2018
7:15 PM
Amphastar Pharmaceuticals (Issuer)
Shohet Stephen B. (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
06/11/2018
7:11 PM
Amphastar Pharmaceuticals (Issuer)
PRINS RICHARD K (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
06/11/2018
7:10 PM
Amphastar Pharmaceuticals (Issuer)
Petersen Floyd F. (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
06/11/2018
7:08 PM
Amphastar Pharmaceuticals (Issuer)
Lee Howard (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
06/11/2018
7:05 PM
Amphastar Pharmaceuticals (Issuer)
Koo Richard (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
06/07/2018
7:33 PM
Amphastar Pharmaceuticals (Filer)
Form 8-K
Current report pursuant to Section 13 or 15(d)  
View Filing
05/17/2018
6:05 PM
Amphastar Pharmaceuticals (Issuer)
Luo Mary Z. (Reporting)
Zhang Jack Y. (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
05/09/2018
3:57 PM
Amphastar Pharmaceuticals (Filer)
Form 8-K
Current report pursuant to Section 13 or 15(d)  
View Filing
04/23/2018
4:11 PM
Amphastar Pharmaceuticals (Issuer)
PETERS WILLIAM J (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
04/18/2018
3:14 PM
Amphastar Pharmaceuticals (Filer)
Form DEFA14A
View Filing
04/18/2018
3:09 PM
Amphastar Pharmaceuticals (Filer)
Form DEF 14A
View Filing
03/28/2018
4:23 PM
Amphastar Pharmaceuticals (Issuer)
Zhou Rong (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
03/28/2018
4:22 PM
Amphastar Pharmaceuticals (Issuer)
PETERS WILLIAM J (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
03/28/2018
4:22 PM
Amphastar Pharmaceuticals (Issuer)
Shandell Jason B. (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
03/28/2018
4:21 PM
Amphastar Pharmaceuticals (Issuer)
Luo Mary Z. (Reporting)
Zhang Jack Y. (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
03/21/2018
5:15 AM
Amphastar Pharmaceuticals (Filer)
Form 8-K
Current report pursuant to Section 13 or 15(d)  
View Filing
03/20/2018
7:06 PM
Amphastar Pharmaceuticals (Issuer)
Zhou Rong (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
03/20/2018
7:04 PM
Amphastar Pharmaceuticals (Issuer)
PETERS WILLIAM J (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
03/20/2018
7:02 PM
Amphastar Pharmaceuticals (Issuer)
Shandell Jason B. (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
03/20/2018
7:00 PM
Amphastar Pharmaceuticals (Issuer)
Luo Mary Z. (Reporting)
Zhang Jack Y. (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
03/16/2018
5:19 PM
Amphastar Pharmaceuticals (Issuer)
PRINS RICHARD K (Reporting)
Form 4
Statement of changes in beneficial ownership of securities  
View Filing
This page was last updated on 7/18/2019 by MarketBeat.com Staff

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