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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: 3/13/26 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
$18.18 $31.26 $17.03 $835 45 448 0.0% 16.6% 76.65% 25.20%
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
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
2
    
 
PETERSEN FLOYD F
DIR
JB
---
3,076
---
6/3/24
---
---
81,409
3.9
D
R,10b
6/5/24 - 6:54:30 pm
3
    
 
PRINS RICHARD K
DIR
JB
---
3,076
---
6/3/24
---
---
33,971
10.0
D
R
6/5/24 - 5:58:49 pm
4
    
 
ZASLOFF MICHAEL A
DIR
JB
---
3,076
---
6/3/24
---
---
24,402
14.4
D
R
6/5/24 - 5:56:54 pm
5
    
 
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
6
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
7
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
8
1y
34
38%
12%
1
ZHANG JACK Y
CEO,DIR,BO
OS
$9,028,016
209,710
3/15/24
3/17/24
---
$43.05
1,229,756
-14.6
I
R
3/19/24 - 6:55:31 pm
9
1y
34
38%
12%
1
ZHANG JACK Y
CEO,DIR,BO
OS
$18,274,252
424,489
3/15/24
3/17/24
---
$43.05
2,433,554
-14.9
D
R
3/19/24 - 6:55:31 pm
10
    
 
LIAWATIDEWI YAKOB
VP,DIR
JS
$190,453
4,424
3/15/24
3/17/24
---
$43.05
74,778
-5.6
D
R
3/19/24 - 5:17:54 pm
11
    
 
ZHOU RONG
VP
JS
$238,282
5,535
3/15/24
3/17/24
---
$43.05
118,016
-4.5
D
R
3/19/24 - 5:15:22 pm
12
    
 
PETERS WILLIAM J
CFO,VP,TR,DIR
JS
$501,317
11,645
3/15/24
3/17/24
---
$43.05
97,655
-10.7
D
R
3/19/24 - 5:10:25 pm
13
1y
12
67%
4%
1
ZHANG JACK Y
CEO,DIR,BO
OB
$8,996,693
722,046
---
3/15/24
---
$12.46
2,858,043
33.8
D
R
3/19/24 - 6:55:31 pm
14
    
 
ZHANG JACK Y
CEO,DIR,BO
OE
$3,874,188
310,930
---
3/15/24
---
$12.46
1,439,466
27.6
I
R
3/19/24 - 6:55:31 pm
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