Home About FAQ Contact Key Subscribe
 
Transaction Types Key To InsiderInsights' Infobase
 B  AB  JB*  OB  OE*  OE
 S  AS  JS*  OS  OS*  3
 JB
 JS
Reduced Version of Subscription Insider Search
Check all filing types
Uncheck all filing types
Remove The Noise What is the 'Remove The Noise' function?
Insider Portfolio Alerts
Free real time insider alerts
Top Trade Alerts
Free insider trades intra-day
Special Screens Report
Free insider special screens report
Our Input Date Search is an excellent tool to examine the latest insider trades for new long and short investment ideas, but it is only available to paid subscribers.

Click Here to Subscribe

close window
Feature available to paying subscribers only. Subscriber output is also not separated on different pages, so that print outs and Excel downloads contain all of a search's information.

Click Here to Subscribe

close window

Detailed Insider History for:
AMPHASTAR PHARMACEUTICALS INC: AMPH
Price: 10/10/25 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
$23.63 $53.96 $20.39 $1,099 47 508 0.0% 17.2% 72.01% 24.01%
Exch Sector Industry Sub-Industry
NasdaqGS Manufacturing Chemicals And Allied Products Pharmaceutical Preparations
click column headers to sort
#
View Form
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
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
2
    
 
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
3
    
 
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
4
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
5
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
6
1y
22
59%
8%
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
7
    
 
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
8
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
9
1y
33
48%
6%
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
10
    
 
PRINS RICHARD K
DIR
JS
---
1,000
---
11/17/23
---
---
30,895
-3.1
D
---
11/20/23 - 5:23:35 pm
11
1y
56
50%
6%
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
12
    
 
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
13
    
 
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
14
1y
33
48%
6%
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
15
1y
59
42%
12%
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
Subscribe Data Module Screens Alerts Newsletter Daily Ratings Reports Free Stuff
Home About FAQ Contact Disclaimer & Terms Of Use Privacy Transaction Codes
© 2025 InsiderInsights.com