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 S  AS  JS*  OS  OS*  3
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 JS
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Detailed Insider History for:
MONOLITHIC POWER SYSTEMS INC: MPWR
Price: 11/14/25 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
$920.19 $1,123.38 $438.86 $44,280 48 569 0.7% 4.1% 101.07% 3.93%
Exch Sector Industry Sub-Industry
NasdaqGS Manufacturing Electronic And Other Electrical Equipment And Components, Except Computer Equipment Semiconductors & Related Devices
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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
1y
312
14%
33%
1
XIAO DEMING
VP,OO
S
$1,000,220
1,300
---
5/22/24
---
$769.40
206,418
-0.6
D
---
5/22/24 - 8:20:47 pm
2
1y
88
30%
24%
2
CHANG KUO WEI HERBERT
DIR
S
$150,000
200
---
5/20/24
---
$750.00
741
-21.3
D
---
5/22/24 - 6:09:57 pm
3
1y
28
14%
36%
1
ZHOU JEFF
DIR
S
$150,000
200
---
5/20/24
---
$750.00
6,069
-3.2
D
---
5/22/24 - 6:01:04 pm
4
1y
88
30%
24%
2
CHANG KUO WEI HERBERT
DIR
S
$147,000
200
---
5/15/24
$730.00
$740.00
941
-17.5
D
---
5/15/24 - 6:52:40 pm
5
    
 
SCIAMMAS MAURICE
VP,SO
JS
---
5,072
---
5/13/24
---
---
13,424
-27.4
I
---
5/15/24 - 5:21:48 pm
6
    
 
SCIAMMAS MAURICE
VP,SO
JB
---
5,072
---
5/13/24
---
---
32,064
18.8
I
---
5/15/24 - 5:21:48 pm
7
    
 
XIAO DEMING
VP,OO
JS
---
29
---
5/10/24
---
---
207,718
-0.0
D
---
5/10/24 - 6:39:39 pm
8
1y
196
13%
38%
1
TSENG SARIA
VP,GC
S
$599,627
869
---
5/8/24
---
$690.02
203,521
-0.4
D
R
5/9/24 - 12:53:26 pm
9
1y
251
18%
29%
1
SCIAMMAS MAURICE
VP,SO
S
$599,610
869
---
5/8/24
---
$690.00
129,875
-0.7
D
R
5/9/24 - 12:52:07 pm
10
1y
140
20%
35%
1
BLEGEN THEODORE
VP,CFO
S
$508,515
737
---
5/8/24
---
$689.98
74,986
-1.0
D
R
5/9/24 - 12:50:40 pm
11
1y
291
32%
18%
1
HSING MICHAEL
CEO,DIR
S
$1,948,560
2,824
---
5/8/24
---
$690.00
888,408
-0.3
D
R
5/9/24 - 12:49:21 pm
12
1y
312
14%
33%
1
XIAO DEMING
VP,OO
S
$599,627
869
---
5/8/24
---
$690.02
207,747
-0.4
D
R
5/9/24 - 12:47:39 pm
13
1y
140
20%
35%
1
BLEGEN THEODORE
VP,CFO
S
$1,658,215
2,500
---
5/1/24
$658.90
$670.08
75,723
-3.2
D
---
5/3/24 - 11:41:39 am
14
1y
291
32%
18%
1
HSING MICHAEL
CEO,DIR
S
$5,294,840
8,000
---
5/1/24
$652.81
$670.09
891,232
-0.9
D
---
5/3/24 - 11:40:25 am
15
1y
251
18%
29%
1
SCIAMMAS MAURICE
VP,SO
S
$7,500,104
11,000
---
4/8/24
$668.76
$690.15
130,744
-7.8
D
---
4/9/24 - 11:14:56 am
16
1y
291
32%
18%
1
HSING MICHAEL
CEO,DIR
S
$5,419,521
8,000
---
4/1/24
$670.56
$687.45
899,232
-0.9
D
---
4/3/24 - 7:03:34 pm
17
    
 
SCIAMMAS MAURICE
VP,SO
JS
---
1,172
---
4/1/24
---
---
22,098
-5.0
I
---
4/3/24 - 6:31:04 pm
18
    
 
SCIAMMAS MAURICE
VP,SO
JB
---
1,172
---
4/1/24
---
---
26,992
4.5
I
---
4/3/24 - 6:31:04 pm
19
1y
140
20%
35%
1
BLEGEN THEODORE
VP,CFO
S
$1,693,493
2,500
---
4/1/24
$670.56
$687.44
78,223
-3.1
D
---
4/3/24 - 4:17:56 pm
20
1y
291
32%
18%
1
HSING MICHAEL
CEO,DIR
S
$5,665,208
7,800
---
3/1/24
$718.52
$733.37
907,232
-0.9
D
---
3/4/24 - 11:09:33 am
21
1y
291
32%
18%
1
HSING MICHAEL
CEO,DIR
JS*
$143,413
200
---
3/1/24
$716.82
$717.31
914,993
-0.0
D
---
3/4/24 - 11:09:33 am
22
1y
140
20%
35%
1
BLEGEN THEODORE
CFO
S
$1,670,718
2,300
---
3/1/24
$719.48
$733.37
80,723
-2.8
D
---
3/4/24 - 11:07:52 am
23
1y
140
20%
35%
1
BLEGEN THEODORE
CFO
JS*
$143,670
200
---
3/1/24
---
$718.35
82,973
-0.2
D
---
3/4/24 - 11:07:52 am
24
1y
88
30%
24%
2
CHANG KUO WEI HERBERT
DIR
S
$176,585
250
---
2/29/24
---
$706.34
1,141
-18.0
D
---
2/29/24 - 6:10:06 pm
25
1y
88
30%
24%
2
CHANG KUO WEI HERBERT
DIR
S
$187,500
250
---
2/22/24
---
$750.00
1,391
-15.2
D
---
2/23/24 - 11:25:10 am
26
    
 
MOYER JAMES C
DIR
JS
---
4,000
---
2/13/24
---
---
33,731
-10.6
I
---
2/14/24 - 5:37:55 pm
27
    
 
MOYER JAMES C
DIR
JB
---
4,000
---
2/13/24
---
---
4,000
New
I
---
2/14/24 - 5:37:55 pm
28
1y
28
14%
36%
1
ZHOU JEFF
DIR
S
$150,114
200
---
2/12/24
---
$750.57
6,269
-3.1
D
---
2/13/24 - 11:14:52 am
29
    
 
MOYER JAMES C
DIR
JS
---
4,000
---
2/12/24
---
---
37,731
-9.6
I
---
2/12/24 - 5:23:18 pm
30
    
 
MOYER JAMES C
DIR
JB
---
4,000
---
2/12/24
---
---
4,000
New
I
---
2/12/24 - 5:23:18 pm
31
1y
312
14%
33%
1
XIAO DEMING
PR,OO
S
$584,120
859
---
2/8/24
---
$680.00
208,580
-0.4
D
R
2/9/24 - 2:36:53 pm
32
1y
196
13%
38%
1
TSENG SARIA
VP,GC
S
$584,120
859
---
2/8/24
---
$680.00
204,339
-0.4
D
R
2/9/24 - 2:35:33 pm
33
1y
251
18%
29%
1
SCIAMMAS MAURICE
VP,SO
S
$584,120
859
---
2/8/24
---
$680.00
141,718
-0.6
D
R
2/9/24 - 2:34:32 pm
34
1y
291
32%
18%
1
HSING MICHAEL
CEO,DIR
S
$1,897,200
2,790
---
2/8/24
---
$680.00
915,193
-0.3
D
R
2/9/24 - 2:33:14 pm
35
1y
140
20%
35%
1
BLEGEN THEODORE
CFO
S
$495,040
728
---
2/8/24
---
$680.00
83,173
-0.9
D
R
2/9/24 - 2:02:07 pm
36
    
 
MOYER JAMES C
DIR
JB
---
348
---
2/6/24
---
---
348
New
D
R
2/8/24 - 11:36:15 am
37
    
 
ZHOU JEFF
DIR
JB
---
348
---
2/6/24
---
---
6,469
5.7
D
R
2/8/24 - 11:35:18 am
38
    
 
ELMIGER EUGEN J
DIR
JB
---
348
---
2/6/24
---
---
20,878
1.7
D
R
2/8/24 - 11:33:50 am
39
    
 
LEE VICTOR K
DIR
JB
---
348
---
2/6/24
---
---
30,232
1.2
D
R
2/8/24 - 11:32:47 am
40
    
 
WYNNE EILEEN
DIR
JB
---
348
---
2/6/24
---
---
818
74.0
D
R
2/8/24 - 11:31:54 am
41
    
 
MARTINEZ CARINTIA
DIR
JB
---
348
---
2/6/24
---
---
1,943
21.8
D
R
2/8/24 - 11:30:52 am
42
    
 
CHANG KUO WEI HERBERT
DIR
JB
---
348
---
2/6/24
---
---
1,641
26.9
D
R
2/8/24 - 11:29:45 am
43
1y
312
14%
33%
1
XIAO DEMING
PR,OO
S
$629,462
982
---
2/5/24
---
$641.00
209,439
-0.5
D
R
2/7/24 - 11:26:08 am
44
1y
196
13%
38%
1
TSENG SARIA
VP,GC
S
$629,462
982
---
2/5/24
---
$641.00
205,198
-0.5
D
R
2/7/24 - 11:24:18 am
45
1y
251
18%
29%
1
SCIAMMAS MAURICE
VP,SO
S
$629,462
982
---
2/5/24
---
$641.00
142,577
-0.7
D
R
2/7/24 - 11:22:12 am
46
1y
291
32%
18%
1
HSING MICHAEL
CEO,DIR
S
$2,430,031
3,791
---
2/5/24
---
$641.00
917,983
-0.4
D
R
2/7/24 - 11:19:45 am
47
1y
140
20%
35%
1
BLEGEN THEODORE
CFO
S
$555,747
867
---
2/5/24
---
$641.00
83,901
-1.0
D
R
2/7/24 - 11:17:59 am
48
1y
291
32%
18%
1
HSING MICHAEL
CEO,DIR
S
$4,816,044
8,000
---
2/1/24
$594.81
$609.39
921,774
-0.9
D
---
2/5/24 - 11:25:32 am
49
1y
140
20%
35%
1
BLEGEN THEODORE
CFO
S
$1,508,138
2,500
---
2/1/24
$600.37
$609.39
84,768
-2.9
D
---
2/5/24 - 11:19:04 am
50
1y
251
18%
29%
1
SCIAMMAS MAURICE
VP,SO
S
$6,403,239
11,000
---
1/12/24
$577.66
$589.29
143,559
-7.1
D
---
1/12/24 - 5:57:20 pm
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