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 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: 5/29/26 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
$18.85 $31.26 $16.65 $831 44 621 0.0% 17.9% 76.38% 29.63%
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
24
63%
4%
1
ZHOU RONG
VP
OS
$193,400
4,000
---
8/26/24
---
$48.35
118,388
-3.3
D
---
8/27/24 - 9:33:05 pm
2
    
 
ZHOU RONG
VP
OE
$59,800
4,000
---
8/26/24
---
$14.95
122,388
3.4
D
---
8/27/24 - 9:33:05 pm
3
    
 
PRINS RICHARD K
DIR
JS
---
1,500
---
8/19/24
---
---
29,455
-4.8
D
R
6/3/26 - 9:22:11 pm
4
1y
35
51%
4%
3
PRINS RICHARD K
DIR
OS
$736,550
17,101
---
8/12/24
---
$43.07
33,971
-33.5
D
---
8/13/24 - 5:58:37 pm
5
    
 
PRINS RICHARD K
DIR
OE
$339,170
17,101
---
8/12/24
---
$19.52
51,072
50.3
D
---
8/13/24 - 5:58:37 pm
6
1y
59
53%
4%
2
PETERS WILLIAM J
CFO,VP,TR,DIR
OS
$454,773
10,282
---
7/31/24
---
$44.23
94,103
-9.9
D
10b
8/2/24 - 4:32:54 pm
7
    
 
PETERS WILLIAM J
CFO,VP,TR,DIR
OE
$208,005
10,282
---
7/31/24
---
$20.23
104,385
10.9
D
10b
8/2/24 - 4:32:54 pm
8
1y
59
53%
4%
2
PETERS WILLIAM J
CFO,VP,TR,DIR
AS
$147,169
3,596
---
6/27/24
$40.85
$41.29
94,103
-3.7
D
10b
6/28/24 - 4:26:52 pm
9
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
10
1y
62
45%
10%
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
11
    
 
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
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