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Transaction Types Key To InsiderInsights' Infobase
 B  AB  JB*  OB  OE*  OE
 S  AS  JS*  OS  OS*  3
 JB
 JS
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Detailed Insider History for:
AMPHASTAR PHARMACEUTICALS INC: AMPH
Price: 3/27/26 52-Wk
High		 52-Wk
Low		 Mkt Cap (mm) Shrs Out (mm) 3-Mth Ave
Vol (m)		 Ind. Yield Short Int
% Float		 Inst. Owned Insider Owned
$19.01 $31.26 $17.03 $874 45 469 0.0% 17.0% 76.66% 25.17%
Exch Sector Industry Sub-Industry
NasdaqGS Manufacturing Chemicals And Allied Products Pharmaceutical Preparations
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#
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Insider Statistics
T N H M S
Filer Name
Insider Title
Trans Type
Dollar Value
Shares Traded
Trans Date From
Trans Date To
Trans Price From
Trans Price To
Total Holdings
Delta % Owned
Owned
Other Info
Input Date
1
1y
13
62%
1%
1
ZHANG JACK Y
CEO,DIR,BO
OB
$1,469,000
100,000
---
6/10/24
---
$14.69
2,533,554
4.1
D
---
6/11/24 - 6:35:15 pm
2
1y
60
43%
11%
1
PETERSEN FLOYD F
DIR
S
$124,200
3,000
---
6/10/24
---
$41.40
78,409
-3.7
D
---
6/11/24 - 6:32:36 pm
3
    
 
LIAWATIDEWI YAKOB
VP,DIR
JS
$11,484
272
---
6/4/24
---
$42.22
74,938
-0.4
D
R
6/5/24 - 6:00:54 pm
4
    
 
GERST DIANE G
DIR
JB
---
3,076
---
6/3/24
---
---
18,634
19.8
D
R
6/5/24 - 7:03:10 pm
5
    
 
DEFLIN GAYLE
DIR
JB
---
3,076
---
6/3/24
---
---
5,792
113.3
D
R
6/5/24 - 6:56:31 pm
6
1y
60
43%
11%
1
PETERSEN FLOYD F
DIR
AS
$21,326
500
---
6/3/24
---
$42.65
78,333
-0.6
D
R,10b
6/5/24 - 6:54:30 pm
7
    
 
PETERSEN FLOYD F
DIR
JB
---
3,076
---
6/3/24
---
---
81,409
3.9
D
R,10b
6/5/24 - 6:54:30 pm
8
    
 
PRINS RICHARD K
DIR
JB
---
3,076
---
6/3/24
---
---
33,971
10.0
D
R
6/5/24 - 5:58:49 pm
9
    
 
ZASLOFF MICHAEL A
DIR
JB
---
3,076
---
6/3/24
---
---
24,402
14.4
D
R
6/5/24 - 5:56:54 pm
10
    
 
PETERS WILLIAM J
CFO,VP,TR,DIR
JS
$16,827
387
---
5/19/24
---
$43.48
97,268
-0.4
D
R
5/21/24 - 6:26:44 pm
11
1y
60
43%
11%
1
PETERSEN FLOYD F
DIR
AS
$20,837
500
---
5/1/24
---
$41.67
78,833
-0.6
D
10b
5/2/24 - 4:56:42 pm
12
1y
60
43%
11%
1
PETERSEN FLOYD F
DIR
AS
$21,714
500
---
4/1/24
---
$43.43
79,333
-0.6
D
10b
4/2/24 - 9:31:21 pm
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