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Detailed Insider History for:
MONOLITHIC POWER SYSTEMS INC: MPWR
Price: 12/27/24 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
$612.70 $959.64 $546.71 $29,888 49 924 0.8% 5.8% 97.31% 3.37%
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
186
11%
40%
1
TSENG SARIA
VP,GC
S
$1,604,810
3,462
---
5/3/23
---
$463.55
275,253
-1.2
D
R
5/4/23 - 4:42:33 pm
2
1y
240
17%
30%
1
SCIAMMAS MAURICE
VP,SO
S
$1,604,810
3,462
---
5/3/23
---
$463.55
206,197
-1.7
D
R
5/4/23 - 4:42:23 pm
3
1y
122
15%
40%
1
BLEGEN THEODORE
CFO
S
$1,330,389
2,870
---
5/3/23
---
$463.55
133,966
-2.1
D
R
5/4/23 - 4:42:11 pm
4
1y
301
12%
34%
1
XIAO DEMING
PR,OO
S
$1,604,810
3,462
---
5/3/23
---
$463.55
274,400
-1.2
D
R
5/4/23 - 4:41:59 pm
5
1y
276
31%
20%
1
HSING MICHAEL
CEO,DIR
S
$5,211,229
11,242
---
5/3/23
---
$463.55
1,067,017
-1.0
D
R
5/4/23 - 4:41:51 pm
6
    
 
TSENG SARIA
VP,GC
JB
---
8,685
---
5/2/23
---
---
278,715
3.2
D
R
5/4/23 - 4:42:33 pm
7
    
 
SCIAMMAS MAURICE
VP,SO
JB
---
8,685
---
5/2/23
---
---
209,659
4.3
D
R
5/4/23 - 4:42:23 pm
8
    
 
BLEGEN THEODORE
CFO
JB
---
5,714
---
5/2/23
---
---
136,836
4.4
D
R
5/4/23 - 4:42:11 pm
9
    
 
XIAO DEMING
PR,OO
JB
---
8,685
---
5/2/23
---
---
277,862
3.2
D
R
5/4/23 - 4:41:59 pm
10
    
 
HSING MICHAEL
CEO,DIR
JB
---
28,210
---
5/2/23
---
---
1,078,259
2.7
D
R
5/4/23 - 4:41:51 pm
11
1y
186
11%
40%
1
TSENG SARIA
VP,GC
S
$2,127,637
4,360
---
4/3/23
---
$487.99
270,030
-1.6
D
R
4/6/23 - 4:49:55 pm
12
1y
301
12%
34%
1
XIAO DEMING
PR,OO
S
$2,127,637
4,360
---
4/3/23
---
$487.99
269,177
-1.6
D
R
4/6/23 - 4:49:33 pm
13
1y
240
17%
30%
1
SCIAMMAS MAURICE
VP,SO
S
$2,127,637
4,360
---
4/3/23
---
$487.99
200,974
-2.1
D
R
4/6/23 - 4:49:02 pm
14
1y
122
15%
40%
1
BLEGEN THEODORE
CFO
S
$448,951
920
---
4/3/23
---
$487.99
131,122
-0.7
D
R
4/6/23 - 4:48:38 pm
15
1y
276
31%
20%
1
HSING MICHAEL
CEO,DIR
S
$5,416,689
11,100
---
4/3/23
---
$487.99
1,050,049
-1.0
D
R
4/6/23 - 4:48:13 pm
16
1y
122
15%
40%
1
BLEGEN THEODORE
CFO
S
$2,605,651
5,000
---
2/16/23
$520.94
$521.44
132,042
-3.6
D
---
2/21/23 - 4:23:51 pm
17
1y
240
17%
30%
1
SCIAMMAS MAURICE
VP,SO
S
$6,754,010
13,000
---
2/15/23
$517.68
$520.90
205,334
-6.0
D
---
2/17/23 - 5:25:11 pm
18
1y
301
12%
34%
1
XIAO DEMING
PR,OO
AS
$793,410
1,497
---
2/15/23
---
$530.00
273,537
-0.5
D
10b
2/17/23 - 4:03:08 pm
19
1y
122
15%
40%
1
BLEGEN THEODORE
CFO
S
$675,942
1,373
---
2/13/23
---
$492.31
136,995
-1.0
D
R
2/13/23 - 7:37:47 pm
20
1y
276
31%
20%
1
HSING MICHAEL
CEO,DIR
S
$3,117,799
6,333
---
2/13/23
---
$492.31
1,061,116
-0.6
D
R
2/13/23 - 7:37:10 pm
21
1y
240
17%
30%
1
SCIAMMAS MAURICE
VP,SO
S
$806,896
1,639
---
2/13/23
---
$492.31
218,312
-0.7
D
R
2/13/23 - 7:36:54 pm
22
1y
301
12%
34%
1
XIAO DEMING
PR,OO
S
$806,896
1,639
---
2/13/23
---
$492.31
275,004
-0.6
D
R
2/13/23 - 7:36:44 pm
23
1y
186
11%
40%
1
TSENG SARIA
VP,GC
S
$806,896
1,639
---
2/13/23
---
$492.31
274,360
-0.6
D
R
2/13/23 - 7:36:21 pm
24
1y
301
12%
34%
1
XIAO DEMING
PR,OO
AS
$1,107,080
2,129
---
2/9/23
---
$520.00
276,643
-0.8
D
10b
2/10/23 - 4:14:26 pm
25
1y
240
17%
30%
1
SCIAMMAS MAURICE
VP,SO
S
$3,200,802
6,922
---
2/8/23
---
$462.41
219,951
-3.1
D
R
2/10/23 - 4:14:17 pm
26
1y
276
31%
20%
1
HSING MICHAEL
CEO,DIR
S
$10,396,364
22,483
---
2/8/23
---
$462.41
1,067,449
-2.1
D
R
2/10/23 - 4:13:56 pm
27
1y
122
15%
40%
1
BLEGEN THEODORE
CFO
S
$2,628,339
5,684
---
2/8/23
---
$462.41
138,368
-3.9
D
R
2/10/23 - 4:13:33 pm
28
1y
186
11%
40%
1
TSENG SARIA
VP,GC
S
$3,200,802
6,922
---
2/8/23
---
$462.41
275,999
-2.4
D
R
2/10/23 - 4:13:24 pm
29
1y
301
12%
34%
1
XIAO DEMING
PR,OO
S
$3,200,802
6,922
---
2/8/23
---
$462.41
278,772
-2.4
D
R
2/10/23 - 4:13:01 pm
30
    
 
WYNNE EILEEN
DIR
JB
---
470
---
2/7/23
---
---
470
New
D
R
2/9/23 - 6:06:31 pm
31
    
 
WYNNE EILEEN
DIR
3
---
---
---
2/7/23
---
---
---
---
---
---
2/9/23 - 5:59:21 pm
32
    
 
MOYER JAMES C
DIR
JB
---
470
---
2/7/23
---
---
2,593
22.1
D
R
2/8/23 - 7:53:19 pm
33
    
 
ZHOU JEFF
DIR
JB
---
470
---
2/7/23
---
---
6,121
8.3
D
R
2/8/23 - 7:53:03 pm
34
    
 
MARTINEZ CARINTIA
DIR
JB
---
470
---
2/7/23
---
---
1,595
41.8
D
R
2/8/23 - 7:52:49 pm
35
    
 
LEE VICTOR K
DIR
JB
---
470
---
2/7/23
---
---
29,884
1.6
D
R
2/8/23 - 7:52:37 pm
36
    
 
CHANG KUO WEI HERBERT
DIR
JB
---
470
---
2/7/23
---
---
2,293
25.8
D
R
2/8/23 - 7:52:12 pm
37
    
 
ELMIGER EUGEN J
DIR
JB
---
470
---
2/7/23
---
---
20,530
2.3
D
R
2/8/23 - 7:51:55 pm
38
    
 
XIAO DEMING
PR,OO
JB
---
34,740
---
2/7/23
---
---
285,694
13.8
D
R
2/8/23 - 6:55:27 pm
39
    
 
TSENG SARIA
VP,GC
JB
---
34,740
---
2/7/23
---
---
282,921
14.0
D
R
2/8/23 - 6:55:06 pm
40
    
 
SCIAMMAS MAURICE
VP,SO
JB
---
34,740
---
2/7/23
---
---
226,873
18.1
D
R
2/8/23 - 6:54:42 pm
41
    
 
HSING MICHAEL
CEO,DIR
JB
---
112,839
---
2/7/23
---
---
1,089,932
11.5
D
R
2/8/23 - 6:54:19 pm
42
    
 
BLEGEN THEODORE
CFO
JB
---
22,857
---
2/7/23
---
---
144,052
18.9
D
R
2/8/23 - 6:54:03 pm
43
1y
301
12%
34%
1
XIAO DEMING
PR,OO
S
$323,094
723
---
2/6/23
---
$446.88
250,954
-0.3
D
R
2/8/23 - 6:55:27 pm
44
1y
186
11%
40%
1
TSENG SARIA
VP,GC
S
$323,094
723
---
2/6/23
---
$446.88
248,181
-0.3
D
R
2/8/23 - 6:55:06 pm
45
1y
240
17%
30%
1
SCIAMMAS MAURICE
VP,SO
S
$323,087
723
---
2/6/23
---
$446.87
192,133
-0.4
D
R
2/8/23 - 6:54:42 pm
46
1y
276
31%
20%
1
HSING MICHAEL
CEO,DIR
S
$1,649,434
3,691
---
2/6/23
---
$446.88
977,093
-0.4
D
R
2/8/23 - 6:54:19 pm
47
1y
122
15%
40%
1
BLEGEN THEODORE
CFO
S
$271,697
608
---
2/6/23
---
$446.87
121,195
-0.5
D
R
2/8/23 - 6:54:03 pm
48
1y
301
12%
34%
1
XIAO DEMING
PR,OO
AS
$4,404,490
10,243
---
1/24/23
---
$430.00
251,677
-3.9
D
10b
1/25/23 - 4:21:18 pm
49
1y
301
12%
34%
1
XIAO DEMING
PR,OO
AS
$1,192,000
2,980
---
1/12/23
---
$400.00
261,920
-1.1
D
10b
1/17/23 - 4:51:27 pm
50
1y
186
11%
40%
1
TSENG SARIA
VP,GC
S
$1,906,939
5,528
---
1/3/23
---
$344.96
248,904
-2.2
D
R
1/5/23 - 4:53:28 pm
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