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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: 4/10/24 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
$40.05 $67.66 $35.62 $1,926 48 441 0.0% 11.8% 71.21% 22.04%
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
    
 
PETERSEN FLOYD F
DIR
JB
---
2,716
---
6/5/23
---
---
82,833
3.4
D
R
6/7/23 - 8:12:37 pm
2
    
 
GERST DIANE G
DIR
JB
---
2,716
---
6/5/23
---
---
15,558
21.1
D
R
6/7/23 - 6:24:37 pm
3
    
 
ZASLOFF MICHAEL A
DIR
JB
---
2,716
---
6/5/23
---
---
46,585
6.2
D
R
6/7/23 - 5:20:38 pm
4
    
 
LEE HOWARD
DIR
JB
---
2,716
---
6/5/23
---
---
145,655
1.9
D
R
6/7/23 - 5:19:44 pm
5
    
 
DEFLIN GAYLE
DIR
JB
---
2,716
---
6/5/23
---
---
6,879
65.2
D
R
6/7/23 - 5:18:56 pm
6
    
 
LIAWATIDEWI YAKOB
VP,DIR
JS
$17,653
378
---
6/4/23
---
$46.70
69,669
-0.5
D
R
6/6/23 - 6:49:04 pm
7
1y
38
45%
7%
2
PETERS WILLIAM J
CFO,VP,TR,DIR
OS
$509,859
11,000
---
6/2/23
---
$46.35
105,603
-9.4
D
10b
6/5/23 - 5:06:59 pm
8
    
 
PETERS WILLIAM J
CFO,VP,TR,DIR
OE
$146,850
11,000
---
6/2/23
---
$13.35
116,603
10.4
D
10b
6/5/23 - 5:06:59 pm
9
1y
11
27%
28%
2
LEE HOWARD
DIR
OS
$750,960
16,679
---
6/1/23
---
$45.02
142,939
-10.4
D
---
6/5/23 - 4:18:06 pm
10
    
 
LEE HOWARD
DIR
OE
$278,373
16,679
---
6/1/23
---
$16.69
159,618
11.7
D
---
6/5/23 - 4:18:06 pm
11
1y
38
45%
7%
2
PETERS WILLIAM J
CFO,VP,TR,DIR
OS
$16,692
378
---
5/19/23
---
$44.16
104,770
-0.4
D
R,10b
5/22/23 - 6:49:13 pm
12
1y
38
45%
7%
2
PETERS WILLIAM J
CFO,VP,TR,DIR
OS
$465,675
10,500
---
5/18/23
---
$44.35
105,148
-9.1
D
R,10b
5/22/23 - 6:49:13 pm
13
    
 
PETERS WILLIAM J
CFO,VP,TR,DIR
OE
$140,175
10,500
---
5/18/23
---
$13.35
115,648
10.0
D
R,10b
5/22/23 - 6:49:13 pm
14
1y
17
47%
18%
1
ZHOU RONG
VP
OS
$442,050
10,000
---
5/18/23
---
$44.20
87,598
-10.2
D
---
5/19/23 - 6:36:25 pm
15
    
 
ZHOU RONG
VP
OE
$144,000
10,000
---
5/18/23
---
$14.40
97,598
11.4
D
---
5/19/23 - 6:36:25 pm
16
    
 
DEFLIN GAYLE
DIR
S
$198,888
4,519
---
5/18/23
---
$44.01
4,163
-52.1
D
---
5/19/23 - 6:30:35 pm
17
1y
36
39%
12%
1
PETERSEN FLOYD F
DIR
S
$215,655
5,000
---
5/17/23
---
$43.13
80,117
-5.9
D
---
5/18/23 - 4:52:35 pm
18
    
 
DEFLIN GAYLE
DIR
S
$64,728
1,500
---
5/15/23
---
$43.15
8,682
-14.7
D
---
5/17/23 - 4:05:15 pm
19
1y
12
25%
12%
1
ZASLOFF MICHAEL A
DIR
S
$316,335
7,500
---
5/15/23
---
$42.18
43,869
-14.6
D
---
5/16/23 - 8:01:53 pm
20
1y
27
37%
12%
3
PRINS RICHARD K
DIR
OS
$427,825
10,000
5/12/23
5/15/23
$42.06
$43.50
44,342
-18.4
D
---
5/16/23 - 7:59:39 pm
21
    
 
PRINS RICHARD K
DIR
OE
$166,900
10,000
5/12/23
5/15/23
---
$16.69
52,342
23.6
D
---
5/16/23 - 7:59:39 pm
22
    
 
PRINS RICHARD K
DIR
JS
---
3,000
---
5/12/23
---
---
44,342
-6.3
D
---
5/16/23 - 7:59:39 pm
23
1y
38
45%
7%
2
PETERS WILLIAM J
CFO,VP,TR,DIR
OS
$238,515
5,632
---
4/17/23
---
$42.35
105,148
-5.1
D
10b
4/18/23 - 8:07:05 pm
24
    
 
PETERS WILLIAM J
CFO,VP,TR,DIR
OE
$75,187
5,632
---
4/17/23
---
$13.35
110,780
5.4
D
10b
4/18/23 - 8:07:05 pm
25
1y
17
82%
6%
1
LIAWATIDEWI YAKOB
VP,DIR
OS
$477,748
11,494
---
4/13/23
$41.00
$42.00
69,215
-14.2
D
10b
4/14/23 - 5:50:00 pm
26
    
 
LIAWATIDEWI YAKOB
VP,DIR
OE
$232,524
11,494
---
4/13/23
---
$20.23
80,709
16.6
D
10b
4/14/23 - 5:50:00 pm
27
1y
38
45%
7%
2
PETERS WILLIAM J
CFO,VP,TR,DIR
OS
$206,160
4,868
---
4/13/23
---
$42.35
105,148
-4.4
D
10b
4/14/23 - 5:48:03 pm
28
    
 
PETERS WILLIAM J
CFO,VP,TR,DIR
OE
$64,988
4,868
---
4/13/23
---
$13.35
110,016
4.6
D
10b
4/14/23 - 5:48:03 pm
29
1y
17
82%
6%
1
LIAWATIDEWI YAKOB
VP,DIR
OS
$200,000
5,000
---
4/10/23
---
$40.00
69,215
-6.7
D
10b
4/12/23 - 5:22:46 pm
30
    
 
LIAWATIDEWI YAKOB
VP,DIR
OE
$101,150
5,000
---
4/10/23
---
$20.23
74,215
7.2
D
10b
4/12/23 - 5:22:46 pm
31
1y
38
45%
7%
2
PETERS WILLIAM J
CFO,VP,TR,DIR
OS
$404,791
10,032
---
4/10/23
---
$40.35
105,148
-8.7
D
10b
4/12/23 - 5:21:12 pm
32
    
 
PETERS WILLIAM J
CFO,VP,TR,DIR
OE
$133,927
10,032
---
4/10/23
---
$13.35
115,180
9.5
D
10b
4/12/23 - 5:21:12 pm
33
1y
36
39%
12%
1
PETERSEN FLOYD F
DIR
AS
$18,519
491
---
4/3/23
---
$37.72
85,117
-0.6
D
10b
4/4/23 - 7:12:50 pm
34
    
 
LIAWATIDEWI YAKOB
VP
JS
$121,625
3,293
3/16/23
3/17/23
---
$36.29
69,215
-4.5
D
R
3/20/23 - 8:05:37 pm
35
    
 
ZHOU RONG
VP
JS
$154,828
4,184
3/16/23
3/17/23
---
$36.29
87,598
-4.6
D
R
3/20/23 - 8:04:47 pm
36
    
 
PETERS WILLIAM J
CFO,VP,TR
JS
$338,851
9,157
3/16/23
3/17/23
---
$36.29
105,148
-8.0
D
R
3/20/23 - 8:03:57 pm
37
    
 
ZHANG JACK Y
CEO,DIR,BO
JS
$1,521,282
41,009
3/16/23
3/17/23
---
$36.29
2,078,718
-1.9
D
R
3/20/23 - 8:02:27 pm
38
    
 
ZHANG JACK Y
CEO,DIR,BO
JS
$631,842
131,780
3/16/23
3/17/23
---
$36.29
---
All
I
R
3/20/23 - 8:02:27 pm
39
    
 
LIAWATIDEWI YAKOB
VP
JS
$68,191
1,851
---
3/15/23
---
$36.84
72,508
-2.5
D
R
3/17/23 - 7:07:26 pm
40
    
 
ZHOU RONG
VP
JS
$75,780
2,057
---
3/15/23
---
$36.84
91,782
-2.2
D
R
3/17/23 - 7:04:16 pm
41
1y
38
45%
7%
2
PETERS WILLIAM J
CFO,VP,TR
OS
$465,472
12,776
---
3/15/23
---
$36.43
118,451
-9.7
D
R,10b
3/17/23 - 7:03:06 pm
42
1y
38
45%
7%
2
PETERS WILLIAM J
CFO,VP,TR
OS
$152,739
4,146
---
3/15/23
---
$36.84
114,305
-3.5
D
R,10b
3/17/23 - 7:03:06 pm
43
    
 
PETERS WILLIAM J
CFO,VP,TR
OE
$99,986
6,688
---
3/15/23
---
$14.95
131,227
5.4
D
R,10b
3/17/23 - 7:03:06 pm
44
    
 
ZHANG JACK Y
CEO,DIR,BO
JS
$103,263
2,803
---
3/15/23
---
$36.84
1,530,017
-0.2
I
R
3/17/23 - 7:01:35 pm
45
    
 
ZHANG JACK Y
CEO,DIR,BO
JS
$310,709
8,434
---
3/15/23
---
$36.84
2,177,092
-0.4
D
R
3/17/23 - 7:01:35 pm
46
    
 
PETERS WILLIAM J
CFO,VP,TR
JB
---
23,925
---
3/6/23
---
---
124,539
23.8
D
R
3/8/23 - 4:38:03 pm
47
    
 
LIAWATIDEWI YAKOB
VP
JB
---
12,752
---
3/6/23
---
---
74,359
20.7
D
R
3/8/23 - 4:07:11 pm
48
    
 
ZHOU RONG
VP
JB
---
15,129
---
3/6/23
---
---
93,839
19.2
D
R
3/8/23 - 4:06:17 pm
49
    
 
ZHANG JACK Y
CEO,DIR,BO
JB
---
81,383
---
3/6/23
---
---
2,185,526
3.9
D
R
3/8/23 - 4:05:27 pm
50
    
 
ZHANG JACK Y
CEO,DIR,BO
JB
---
34,301
---
3/6/23
---
---
1,532,820
2.3
I
R
3/8/23 - 4:05:27 pm
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