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:
MONOLITHIC POWER SYSTEMS INC: MPWR
Price: 8/8/25 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
$804.29 $959.64 $438.86 $38,519 48 608 0.8% 6.0% 101.22% 3.33%
Exch Sector Industry Sub-Industry
NasdaqGS Manufacturing Electronic And Other Electrical Equipment And Components, Except Computer Equipment Semiconductors & Related Devices
<<PREV
Page
1234
 NEXT>>
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
28
14%
36%
1
ZHOU JEFF
DIR
S
$166,000
200
---
8/12/25
---
$830.00
6,204
-3.1
D
---
8/13/25 - 5:47:38 pm
2
    
 
XIAO DEMING
VP,OO
JS
---
945
---
8/11/25
---
---
120,660
-0.8
D
---
8/12/25 - 5:45:36 pm
3
    
 
XIAO DEMING
VP,OO
JB
---
945
---
8/11/25
---
---
4,336
27.9
I
---
8/12/25 - 5:45:36 pm
4
    
 
SCIAMMAS MAURICE
VP,SO
JS
---
4,836
---
8/6/25
---
---
9,481
-33.8
I
---
8/8/25 - 12:40:45 pm
5
    
 
SCIAMMAS MAURICE
VP,SO
JB
---
4,836
---
8/6/25
---
---
44,930
12.1
I
---
8/8/25 - 12:40:45 pm
6
1y
309
14%
33%
1
XIAO DEMING
VP,OO
AS
$31,199,220
39,999
---
8/1/25
---
$780.00
121,605
-24.8
D
10b
8/4/25 - 7:58:34 pm
7
1y
136
20%
35%
1
BLEGEN THEODORE
VP,CFO
AS
$2,250,000
3,000
---
8/1/25
---
$750.00
43,939
-6.4
D
10b
8/4/25 - 7:31:55 pm
8
1y
136
20%
35%
1
BLEGEN THEODORE
VP,CFO
AS
$4,500,000
6,000
---
7/1/25
---
$750.00
46,939
-11.3
D
10b
7/2/25 - 11:46:44 am
9
    
 
SCIAMMAS MAURICE
VP,SO
JS
---
1,499
---
5/28/25
---
---
15,727
-8.7
I
---
5/30/25 - 4:32:48 pm
10
    
 
SCIAMMAS MAURICE
VP,SO
JB
---
1,499
---
5/28/25
---
---
1,499
New
I
---
5/30/25 - 4:32:48 pm
11
1y
88
30%
24%
2
CHANG KUO WEI HERBERT
DIR
S
$36,900
50
---
5/13/25
---
$738.00
626
-7.4
D
---
5/13/25 - 6:09:12 pm
12
1y
88
30%
24%
2
CHANG KUO WEI HERBERT
DIR
S
$69,800
100
---
5/12/25
---
$698.00
676
-12.9
D
---
5/12/25 - 8:24:13 pm
13
1y
249
18%
29%
1
SCIAMMAS MAURICE
VP,SO
AS
$8,412,000
12,000
---
5/12/25
---
$701.00
4,015
-74.9
I
10b
5/12/25 - 6:02:36 pm
14
    
 
SCIAMMAS MAURICE
VP,SO
JS
---
1,878
---
5/9/25
---
---
17,226
-9.8
I
---
5/9/25 - 7:55:15 pm
15
    
 
SCIAMMAS MAURICE
VP,SO
JB
---
1,878
---
5/9/25
---
---
40,094
4.9
I
---
5/9/25 - 7:55:15 pm
16
1y
88
30%
24%
2
CHANG KUO WEI HERBERT
DIR
S
$65,000
100
---
5/8/25
---
$650.00
776
-11.4
D
---
5/9/25 - 6:53:33 pm
17
    
 
SCIAMMAS MAURICE
VP,SO
JS
---
1,102
---
2/18/25
---
---
19,104
-5.5
I
---
2/20/25 - 7:02:07 pm
18
    
 
SCIAMMAS MAURICE
VP,SO
JB
---
1,102
---
2/18/25
---
---
38,216
3.0
I
---
2/20/25 - 7:02:07 pm
19
1y
290
32%
18%
1
HSING MICHAEL
CEO,DIR
S
$3,640,000
5,200
---
2/18/25
---
$700.00
834,898
-0.6
D
---
2/20/25 - 7:01:31 pm
20
    
 
SCIAMMAS MAURICE
VP,SO
JS
---
5,050
---
2/11/25
---
---
10,899
-31.7
I
---
2/13/25 - 6:00:59 pm
21
    
 
SCIAMMAS MAURICE
VP,SO
JB
---
5,050
---
2/11/25
---
---
37,114
15.7
I
---
2/13/25 - 6:00:59 pm
22
1y
309
14%
33%
1
XIAO DEMING
VP,OO
S
$474,721
662
---
2/10/25
---
$717.10
161,577
-0.4
D
R
2/12/25 - 3:45:56 pm
23
1y
195
13%
38%
1
TSENG SARIA
VP,GC
S
$475,438
663
---
2/10/25
---
$717.10
158,977
-0.4
D
R
2/12/25 - 3:45:28 pm
24
1y
249
18%
29%
1
SCIAMMAS MAURICE
VP,SO
S
$474,721
662
---
2/10/25
---
$717.10
102,301
-0.6
D
R
2/12/25 - 3:44:48 pm
25
1y
290
32%
18%
1
HSING MICHAEL
CEO,DIR
S
$1,860,157
2,594
---
2/10/25
---
$717.10
840,071
-0.3
D
R
2/12/25 - 3:44:10 pm
26
1y
136
20%
35%
1
BLEGEN THEODORE
VP,CFO
S
$381,498
532
---
2/10/25
---
$717.10
52,912
-1.0
D
R
2/12/25 - 3:43:39 pm
27
1y
290
32%
18%
1
HSING MICHAEL
CEO,DIR
S
$8,374,800
11,964
---
2/7/25
---
$700.00
842,665
-1.4
D
---
2/11/25 - 5:33:48 pm
28
1y
249
18%
29%
1
SCIAMMAS MAURICE
VP,SO
S
$4,913,852
7,000
---
2/7/25
$701.03
$704.91
16,015
-30.4
I
---
2/11/25 - 5:33:28 pm
29
    
 
LEE VICTOR K
DIR
JB
---
335
---
2/4/25
---
---
29,567
1.1
D
R
2/6/25 - 3:58:49 pm
30
    
 
ELMIGER EUGEN J
DIR
JB
---
335
---
2/4/25
---
---
21,213
1.6
D
R
2/6/25 - 3:58:21 pm
31
    
 
CHANG KUO WEI HERBERT
DIR
JB
---
335
---
2/4/25
---
---
876
61.9
D
R
2/6/25 - 3:57:52 pm
32
    
 
MARTINEZ CARINTIA
DIR
JB
---
335
---
2/4/25
---
---
2,278
17.2
D
R
2/6/25 - 3:57:31 pm
33
    
 
ZHOU JEFF
DIR
JB
---
335
---
2/4/25
---
---
6,404
5.5
D
R
2/6/25 - 3:57:08 pm
34
    
 
WYNNE EILEEN
DIR
JB
---
335
---
2/4/25
---
---
1,153
41.0
D
R
2/6/25 - 3:56:39 pm
35
1y
290
32%
18%
1
HSING MICHAEL
CEO,DIR
S
$2,545,200
3,636
---
1/24/25
---
$700.00
854,629
-0.4
D
---
1/28/25 - 5:52:21 pm
36
1y
136
20%
35%
1
BLEGEN THEODORE
VP,CFO
S
$1,500,000
2,500
---
12/9/24
---
$600.00
53,444
-4.5
D
---
12/11/24 - 7:21:40 pm
37
1y
309
14%
33%
1
XIAO DEMING
VP,OO
S
$662,611
866
---
11/8/24
---
$765.14
162,239
-0.5
D
R
11/13/24 - 5:16:26 pm
38
1y
195
13%
38%
1
TSENG SARIA
VP,GC
S
$662,611
866
---
11/8/24
---
$765.14
159,640
-0.5
D
R
11/13/24 - 5:15:28 pm
39
1y
249
18%
29%
1
SCIAMMAS MAURICE
VP,SO
S
$662,611
866
---
11/8/24
---
$765.14
102,963
-0.8
D
R
11/13/24 - 5:14:30 pm
40
1y
136
20%
35%
1
BLEGEN THEODORE
VP,CFO
S
$561,620
734
---
11/8/24
---
$765.15
55,944
-1.3
D
R
11/13/24 - 5:13:31 pm
41
1y
290
32%
18%
1
HSING MICHAEL
CEO,DIR
S
$2,151,602
2,812
---
11/8/24
---
$765.15
858,265
-0.3
D
R
11/13/24 - 5:12:25 pm
42
1y
136
20%
35%
1
BLEGEN THEODORE
VP,CFO
S
$1,932,405
2,500
---
11/1/24
$764.54
$779.79
56,678
-4.2
D
---
11/5/24 - 5:31:31 pm
43
1y
249
18%
29%
1
SCIAMMAS MAURICE
VP,SO
S
$10,225,485
11,000
---
10/7/24
$922.72
$935.00
103,829
-9.6
D
---
10/8/24 - 1:14:04 pm
44
1y
136
20%
35%
1
BLEGEN THEODORE
VP,CFO
S
$2,270,901
2,500
---
10/1/24
$892.66
$925.12
59,178
-4.1
D
---
10/2/24 - 11:08:20 am
45
1y
136
20%
35%
1
BLEGEN THEODORE
VP,CFO
S
$2,260,506
2,500
---
9/3/24
$893.29
$919.73
61,678
-3.9
D
---
9/3/24 - 7:40:49 pm
46
    
 
MOYER JAMES C
DIR
JS
---
11,731
---
8/29/24
---
---
---
All
I
---
8/29/24 - 5:38:24 pm
47
1y
309
14%
33%
1
XIAO DEMING
VP,OO
S
$8,796,050
9,259
---
8/27/24
---
$950.00
20,455
-31.2
I
---
8/29/24 - 5:05:09 pm
48
1y
309
14%
33%
1
XIAO DEMING
VP,OO
S
$9,500,000
10,000
---
8/22/24
---
$950.00
29,714
-25.2
I
---
8/22/24 - 7:48:19 pm
49
    
 
XIAO DEMING
VP,OO
JS
---
8,968
---
8/22/24
---
---
163,105
-5.2
D
---
8/22/24 - 7:48:19 pm
50
    
 
XIAO DEMING
VP,OO
JB
---
8,968
---
8/22/24
---
---
39,714
29.2
I
---
8/22/24 - 7:48:19 pm
<<PREV
Page
1234
 NEXT>>
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