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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: 6/13/25 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
$25.82 $53.96 $22.64 $1,217 47 588 0.0% 17.2% 72.75% 23.25%
Exch Sector Industry Sub-Industry
NasdaqGS Services Engineering, Accounting, Research, Management, And Related Services Services- Management Services
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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
    
 
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
2
1y
58
41%
13%
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
3
1y
32
47%
8%
3
PRINS RICHARD K
DIR
S
$223,446
4,000
---
11/17/23
---
$55.86
31,895
-11.1
D
---
11/20/23 - 5:23:35 pm
4
    
 
PRINS RICHARD K
DIR
JS
---
1,000
---
11/17/23
---
---
30,895
-3.1
D
---
11/20/23 - 5:23:35 pm
5
1y
54
48%
8%
2
PETERS WILLIAM J
CFO,VP,TR,DIR
OS
$3,298,475
59,250
---
11/14/23
$54.76
$56.53
101,360
-36.9
D
10b
11/16/23 - 4:05:15 pm
6
    
 
PETERS WILLIAM J
CFO,VP,TR,DIR
OE
$925,028
59,250
---
11/14/23
---
$13.03
160,610
58.5
D
10b
11/16/23 - 4:05:15 pm
7
    
 
DEFLIN GAYLE
DIR
S
$230,838
4,163
---
11/14/23
---
$55.45
2,716
-60.5
D
---
11/15/23 - 4:30:11 pm
8
1y
32
47%
8%
3
PRINS RICHARD K
DIR
S
$262,500
5,000
---
11/13/23
---
$52.50
35,895
-12.2
D
---
11/15/23 - 4:31:26 pm
9
1y
58
41%
13%
1
PETERSEN FLOYD F
DIR
AS
$22,651
500
---
11/1/23
---
$45.30
81,833
-0.6
D
10b
11/2/23 - 8:37:19 pm
10
1y
58
41%
13%
1
PETERSEN FLOYD F
DIR
AS
$22,890
500
---
10/2/23
---
$45.78
82,333
-0.6
D
10b
10/3/23 - 6:38:33 pm
11
1y
54
48%
8%
2
PETERS WILLIAM J
CFO,VP,TR,DIR
OS
$3,143,195
60,743
---
9/6/23
$51.75
$52.26
101,360
-37.5
D
10b
9/8/23 - 4:08:31 pm
12
    
 
PETERS WILLIAM J
CFO,VP,TR,DIR
OE
$956,795
56,500
---
9/6/23
---
$13.03
162,103
53.5
D
10b
9/8/23 - 4:08:31 pm
13
1y
22
73%
10%
1
LIAWATIDEWI YAKOB
VP,DIR
OS
$1,530,994
28,816
---
8/28/23
---
$53.13
69,669
-29.3
D
10b
8/29/23 - 6:54:15 pm
14
    
 
LIAWATIDEWI YAKOB
VP,DIR
OE
$428,095
28,816
---
8/28/23
---
$13.03
98,485
41.4
D
10b
8/29/23 - 6:54:15 pm
15
1y
32
47%
8%
3
PRINS RICHARD K
DIR
S
$105,006
2,000
---
8/18/23
---
$52.50
40,895
-4.7
D
---
8/21/23 - 4:05:21 pm
16
1y
15
40%
6%
1
ZASLOFF MICHAEL A
DIR
S
$730,025
12,759
---
8/15/23
---
$57.22
33,826
-27.4
D
---
8/16/23 - 8:23:43 pm
17
1y
32
47%
8%
3
PRINS RICHARD K
DIR
S
$238,911
4,163
---
8/15/23
---
$57.39
42,895
-8.8
D
---
8/16/23 - 8:22:39 pm
18
1y
2
50%
-8%
1
ZHOU RONG
VP
OB
$109,346
9,651
---
6/20/23
---
$11.33
112,341
9.4
D
---
6/21/23 - 5:05:43 pm
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