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Detailed Insider History for:
MONOLITHIC POWER SYSTEMS INC: MPWR
Price: 11/21/25 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
$872.35 $1,123.38 $438.86 $41,792 48 589 0.7% 4.1% 101.37% 3.86%
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
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
2
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
3
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
4
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
5
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
6
1y
312
14%
33%
1
XIAO DEMING
PR,OO
S
$6,786,331
11,515
---
1/10/24
$584.39
$596.19
210,421
-5.2
D
---
1/11/24 - 11:37:13 am
7
1y
196
13%
38%
1
TSENG SARIA
VP,GC
S
$834,000
1,390
---
1/9/24
---
$600.00
206,180
-0.7
D
---
1/10/24 - 11:34:48 am
8
1y
291
32%
18%
1
HSING MICHAEL
CEO,DIR
S
$4,578,223
8,000
---
1/5/24
$568.36
$577.01
929,772
-0.9
D
---
1/9/24 - 12:42:32 pm
9
1y
196
13%
38%
1
TSENG SARIA
VP,GC
S
$14,761,606
25,314
---
1/4/24
---
$583.14
207,570
-10.9
D
R
1/8/24 - 2:48:37 pm
10
1y
312
14%
33%
1
XIAO DEMING
PR,OO
S
$14,761,606
25,314
---
1/4/24
---
$583.14
221,936
-10.2
D
R
1/8/24 - 2:46:51 pm
11
1y
251
18%
29%
1
SCIAMMAS MAURICE
VP,SO
S
$16,129,069
27,659
---
1/4/24
---
$583.14
154,559
-15.2
D
R
1/8/24 - 2:44:58 pm
12
1y
140
20%
35%
1
BLEGEN THEODORE
CFO
S
$16,102,245
27,613
---
1/4/24
---
$583.14
87,268
-24.0
D
R
1/8/24 - 2:41:55 pm
13
1y
291
32%
18%
1
HSING MICHAEL
CEO,DIR
S
$34,203,492
58,654
---
1/4/24
---
$583.14
937,772
-5.9
D
R
1/8/24 - 2:39:27 pm
14
1y
140
20%
35%
1
BLEGEN THEODORE
CFO
S
$1,539,272
2,500
---
1/2/24
$610.93
$620.50
114,881
-2.1
D
---
1/3/24 - 11:18:11 am
15
1y
140
20%
35%
1
BLEGEN THEODORE
CFO
S
$1,578,398
2,500
---
12/18/23
$627.99
$634.67
117,381
-2.1
D
---
12/19/23 - 12:13:48 pm
16
1y
196
13%
38%
1
TSENG SARIA
VP,GC
S
$11,166,000
18,610
---
12/13/23
---
$600.00
232,884
-7.4
D
---
12/14/23 - 2:03:28 pm
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