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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: 11/21/25 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
$26.01 $46.43 $20.39 $1,209 46 438 0.0% 18.6% 73.81% 24.30%
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
    
 
ZHANG JACK Y
CEO,DIR,BO
JB
---
64,310
---
3/4/24
---
---
2,143,028
3.1
D
R
3/6/24 - 6:29:28 pm
2
    
 
LIAWATIDEWI YAKOB
VP,DIR
JB
---
10,754
---
3/4/24
---
---
80,423
15.4
D
R
3/6/24 - 5:54:00 pm
3
    
 
ZHOU RONG
VP
JB
---
12,521
---
3/4/24
---
---
124,941
11.1
D
R
3/6/24 - 5:51:48 pm
4
    
 
PETERS WILLIAM J
CFO,VP,TR,DIR
JB
---
19,440
---
3/4/24
---
---
120,800
19.2
D
R
3/6/24 - 5:49:35 pm
5
1y
59
42%
12%
1
PETERSEN FLOYD F
DIR
AS
$22,847
500
---
3/1/24
$45.60
$46.53
79,833
-0.6
D
10b
3/4/24 - 8:35:23 pm
6
1y
59
42%
12%
1
PETERSEN FLOYD F
DIR
AS
$26,548
500
---
2/1/24
$53.07
$53.64
80,333
-0.6
D
10b
2/2/24 - 7:37:11 pm
7
    
 
LUO MARY Z
COO,DIR,BO
AS
$7,171,768
131,386
---
1/10/24
$54.32
$57.00
1,104,416
-10.6
D
10b
1/11/24 - 4:37:53 pm
8
    
 
LUO MARY Z
COO,DIR,BO
AS
$12,798,708
219,800
1/8/24
1/9/24
$56.70
$58.35
1,235,802
-15.1
D
10b
1/10/24 - 6:27:18 pm
9
1y
59
42%
12%
1
PETERSEN FLOYD F
DIR
AS
$21,781
353
---
1/2/24
---
$61.70
80,833
-0.4
D
10b
1/3/24 - 7:25:01 pm
10
1y
59
42%
12%
1
PETERSEN FLOYD F
DIR
AS
$8,902
147
---
1/2/24
---
$60.56
81,186
-0.2
D
10b
1/3/24 - 7:25:01 pm
11
1y
23
61%
6%
1
ZHOU RONG
VP
OS
$462,195
7,830
12/1/23
12/4/23
$58.58
$59.58
112,420
-6.5
D
---
12/5/23 - 6:25:04 pm
12
    
 
ZHOU RONG
VP
OE
$119,042
7,830
12/1/23
12/4/23
$14.40
$16.19
116,736
7.2
D
---
12/5/23 - 6:25:04 pm
13
1y
59
42%
12%
1
PETERSEN FLOYD F
DIR
AS
$28,952
500
---
12/1/23
$57.24
$58.15
81,333
-0.6
D
10b
12/4/23 - 8:49:41 pm
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