Stocks · Technology · Semiconductors & Related Devices

Monolithic Power Systems

MPWR Clue Score76
United States Fiscal year ends December CIK 0001280452 Results filed 29 Oct 2026

What the insiders did Net selling

Insider
Date
Role
Action
Shares
Price
Amount
Michael Hsing
28 Sep 2026
CEO
Sold on a plan
130
$1,356.94
$176.40K
Michael Hsing
28 Sep 2026
CEO
Sold on a plan
10,967
$1,351.43
$14.82M
Michael Hsing
28 Sep 2026
CEO
Sold on a plan
6,343
$1,347.15
$8.54M
Michael Hsing
28 Sep 2026
CEO
Sold on a plan
5,783
$1,343.76
$7.77M
Michael Hsing
28 Sep 2026
CEO
Sold on a plan
2,949
$1,338.66
$3.95M
Michael Hsing
28 Sep 2026
CEO
Sold on a plan
1,111
$1,333.34
$1.48M
Michael Hsing
28 Sep 2026
CEO
Sold on a plan
2,121
$1,328.54
$2.82M
Michael Hsing
28 Sep 2026
CEO
Sold on a plan
596
$1,323.31
$788.69K
Maurice Sciammas
3 Aug 2026
EVP, WW Sales & Marketing
Sold on a plan indirect
30
$1,343.94
$40.32K
Maurice Sciammas
15 Jul 2026
EVP, WW Sales & Marketing
Sold on a plan
110
$1,405.71
$154.63K
Maurice Sciammas
15 Jul 2026
EVP, WW Sales & Marketing
Sold on a plan
117
$1,400.45
$163.85K
Maurice Sciammas
15 Jul 2026
EVP, WW Sales & Marketing
Sold on a plan
213
$1,396.16
$297.38K
Maurice Sciammas
15 Jul 2026
EVP, WW Sales & Marketing
Sold on a plan
50
$1,388.19
$69.41K
Maurice Sciammas
15 Jul 2026
EVP, WW Sales & Marketing
Sold on a plan
410
$1,384.11
$567.49K
Maurice Sciammas
15 Jul 2026
EVP, WW Sales & Marketing
Sold on a plan
418
$1,378.73
$576.31K
Maurice Sciammas
15 Jul 2026
EVP, WW Sales & Marketing
Sold on a plan
472
$1,375.47
$649.22K
Maurice Sciammas
15 Jul 2026
EVP, WW Sales & Marketing
Sold on a plan
240
$1,369.18
$328.60K
Maurice Sciammas
15 Jul 2026
EVP, WW Sales & Marketing
Sold on a plan
50
$1,359.36
$67.97K
Maurice Sciammas
15 Jul 2026
EVP, WW Sales & Marketing
Sold on a plan
5,640
$1,352.95
$7.63M
Maurice Sciammas
15 Jul 2026
EVP, WW Sales & Marketing
Sold on a plan
1,506
$1,348.91
$2.03M
Maurice Sciammas
15 Jul 2026
EVP, WW Sales & Marketing
Sold on a plan
1,864
$1,344.16
$2.51M
Maurice Sciammas
15 Jul 2026
EVP, WW Sales & Marketing
Sold on a plan
1,460
$1,339.59
$1.96M
Maurice Sciammas
15 Jul 2026
EVP, WW Sales & Marketing
Sold on a plan
776
$1,334.59
$1.04M
Maurice Sciammas
15 Jul 2026
EVP, WW Sales & Marketing
Sold on a plan
464
$1,329.30
$616.80K
Maurice Sciammas
15 Jul 2026
EVP, WW Sales & Marketing
Sold on a plan
409
$1,323.93
$541.49K
Maurice Sciammas
15 Jul 2026
EVP, WW Sales & Marketing
Sold on a plan
274
$1,318.42
$361.25K
Maurice Sciammas
15 Jul 2026
EVP, WW Sales & Marketing
Sold on a plan
527
$1,314.03
$692.49K
Maurice Sciammas
1 Jul 2026
EVP, WW Sales & Marketing
Sold on a plan indirect
30
$1,351.61
$40.55K
Maurice Sciammas
1 Jun 2026
EVP, WW Sales & Marketing
Sold on a plan indirect
30
$1,533.95
$46.02K
Maurice Sciammas
15 May 2026
EVP, WW Sales & Marketing
Sold on a plan
50
$1,585.51
$79.28K
Maurice Sciammas
15 May 2026
EVP, WW Sales & Marketing
Sold on a plan
447
$1,582.21
$707.25K
Maurice Sciammas
15 May 2026
EVP, WW Sales & Marketing
Sold on a plan
703
$1,577.75
$1.11M
Maurice Sciammas
15 May 2026
EVP, WW Sales & Marketing
Sold on a plan
1,312
$1,571.49
$2.06M
Maurice Sciammas
15 May 2026
EVP, WW Sales & Marketing
Sold on a plan
2,020
$1,567.15
$3.17M
Maurice Sciammas
15 May 2026
EVP, WW Sales & Marketing
Sold on a plan
2,010
$1,562.01
$3.14M
Maurice Sciammas
15 May 2026
EVP, WW Sales & Marketing
Sold on a plan
1,717
$1,557.48
$2.67M
Maurice Sciammas
15 May 2026
EVP, WW Sales & Marketing
Sold on a plan
3,741
$1,550.36
$5.80M
Maurice Sciammas
4 May 2026
EVP, WW Sales & Marketing
Sold on a plan indirect
30
$1,588.73
$47.66K
Saria Tseng
8 Apr 2026
EVP & General Counsel
Sold on a plan
120
$1,321.94
$158.63K
Saria Tseng
8 Apr 2026
EVP & General Counsel
Sold on a plan
840
$1,319.25
$1.11M
Saria Tseng
8 Apr 2026
EVP & General Counsel
Sold on a plan
4,244
$1,312.82
$5.57M
Saria Tseng
8 Apr 2026
EVP & General Counsel
Sold on a plan
1,279
$1,308.30
$1.67M
Saria Tseng
8 Apr 2026
EVP & General Counsel
Sold on a plan
800
$1,302.52
$1.04M
Saria Tseng
8 Apr 2026
EVP & General Counsel
Sold on a plan
400
$1,292.08
$516.83K
Saria Tseng
8 Apr 2026
EVP & General Counsel
Sold on a plan
120
$1,287.12
$154.45K
Saria Tseng
8 Apr 2026
EVP & General Counsel
Sold on a plan
240
$1,279.55
$307.09K
Saria Tseng
8 Apr 2026
EVP & General Counsel
Sold on a plan
360
$1,270.29
$457.30K
Saria Tseng
8 Apr 2026
EVP & General Counsel
Sold on a plan
560
$1,266.48
$709.23K
Saria Tseng
6 Apr 2026
EVP & General Counsel
Sold on a plan
1,396
$1,179.50
$1.65M
Saria Tseng
6 Apr 2026
EVP & General Counsel
Sold on a plan
1,680
$1,176.35
$1.98M
Saria Tseng
6 Apr 2026
EVP & General Counsel
Sold on a plan
2,036
$1,170.38
$2.38M
Saria Tseng
6 Apr 2026
EVP & General Counsel
Sold on a plan
684
$1,165.66
$797.31K
Saria Tseng
6 Apr 2026
EVP & General Counsel
Sold on a plan
560
$1,159.62
$649.39K
Saria Tseng
6 Apr 2026
EVP & General Counsel
Sold on a plan
480
$1,149.05
$551.54K
Saria Tseng
6 Apr 2026
EVP & General Counsel
Sold on a plan
556
$1,144.42
$636.30K
Saria Tseng
6 Apr 2026
EVP & General Counsel
Sold on a plan
244
$1,139.96
$278.15K
Maurice Sciammas
1 Apr 2026
EVP, WW Sales & Marketing
Sold on a plan indirect
30
$1,116.44
$33.49K
Saria Tseng
1 Apr 2026
EVP & General Counsel
Sold on a plan
292
$1,136.99
$332.00K
Saria Tseng
1 Apr 2026
EVP & General Counsel
Sold on a plan
188
$1,135.91
$213.55K
Saria Tseng
1 Apr 2026
EVP & General Counsel
Sold on a plan
160
$1,134.14
$181.46K
Saria Tseng
1 Apr 2026
EVP & General Counsel
Sold on a plan
184
$1,132.15
$208.32K
Saria Tseng
1 Apr 2026
EVP & General Counsel
Sold on a plan
576
$1,131.24
$651.59K
Saria Tseng
30 Mar 2026
EVP & General Counsel
Sold on a plan
80
$1,041.12
$83.29K
Saria Tseng
30 Mar 2026
EVP & General Counsel
Sold on a plan
166
$1,035.60
$171.91K
Saria Tseng
30 Mar 2026
EVP & General Counsel
Sold on a plan
2,440
$1,029.21
$2.51M
Saria Tseng
30 Mar 2026
EVP & General Counsel
Sold on a plan
2,200
$1,023.00
$2.25M
Saria Tseng
30 Mar 2026
EVP & General Counsel
Sold on a plan
3,194
$1,017.22
$3.25M
Saria Tseng
30 Mar 2026
EVP & General Counsel
Sold on a plan
3,360
$1,009.63
$3.39M
Saria Tseng
30 Mar 2026
EVP & General Counsel
Sold on a plan
9,080
$1,005.18
$9.13M
Saria Tseng
30 Mar 2026
EVP & General Counsel
Sold on a plan
5,154
$1,000.81
$5.16M
Maurice Sciammas
20 Mar 2026
EVP, WW Sales & Marketing
Sold on a plan indirect
30
$1,095.07
$32.85K
Michael Hsing
12 Feb 2026
CEO
Sold on a plan
1,440
$1,217.12
$1.75M
Michael Hsing
12 Feb 2026
CEO
Sold on a plan
1,240
$1,210.11
$1.50M
Michael Hsing
12 Feb 2026
CEO
Sold on a plan
3,640
$1,205.82
$4.39M
Michael Hsing
12 Feb 2026
CEO
Sold on a plan
1,440
$1,200.81
$1.73M
Michael Hsing
12 Feb 2026
CEO
Sold on a plan
600
$1,194.34
$716.60K
Michael Hsing
12 Feb 2026
CEO
Sold on a plan
160
$1,188.23
$190.12K
Michael Hsing
12 Feb 2026
CEO
Sold on a plan
480
$1,180.79
$566.78K
Michael Hsing
12 Feb 2026
CEO
Sold on a plan
200
$1,173.39
$234.68K
Michael Hsing
12 Feb 2026
CEO
Sold on a plan
2,076
$1,168.80
$2.43M
Michael Hsing
12 Feb 2026
CEO
Sold on a plan
4,001
$1,164.92
$4.66M
Michael Hsing
12 Feb 2026
CEO
Sold on a plan
4,992
$1,159.84
$5.79M
Michael Hsing
12 Feb 2026
CEO
Sold on a plan
12,731
$1,155.71
$14.71M
Michael Hsing
11 Feb 2026
CEO
Sold on a plan
649
$1,202.28
$780.28K
Michael Hsing
11 Feb 2026
CEO
Sold on a plan
14,578
$1,197.20
$17.45M
Michael Hsing
11 Feb 2026
CEO
Sold on a plan
6,079
$1,192.67
$7.25M
Michael Hsing
11 Feb 2026
CEO
Sold on a plan
2,104
$1,188.17
$2.50M
Michael Hsing
11 Feb 2026
CEO
Sold on a plan
1,542
$1,182.82
$1.82M
Michael Hsing
11 Feb 2026
CEO
Sold on a plan
2,799
$1,177.67
$3.30M
Michael Hsing
11 Feb 2026
CEO
Sold on a plan
1,987
$1,172.92
$2.33M
Michael Hsing
11 Feb 2026
CEO
Sold on a plan
1,533
$1,167.62
$1.79M
Michael Hsing
11 Feb 2026
CEO
Sold on a plan
1,366
$1,163.71
$1.59M
Michael Hsing
11 Feb 2026
CEO
Sold on a plan
363
$1,158.71
$420.61K
Michael Hsing
10 Feb 2026
CEO
Sold on a plan
280
$1,197.26
$335.23K
Michael Hsing
10 Feb 2026
CEO
Sold on a plan
880
$1,176.04
$1.03M
Michael Hsing
10 Feb 2026
CEO
Sold on a plan
360
$1,161.41
$418.11K
Michael Hsing
10 Feb 2026
CEO
Sold on a plan
694
$1,154.96
$801.54K
Michael Hsing
10 Feb 2026
CEO
Sold on a plan
1,215
$1,151.11
$1.40M
Michael Hsing
10 Feb 2026
CEO
Sold on a plan
3,864
$1,145.90
$4.43M
Michael Hsing
10 Feb 2026
CEO
Sold on a plan
16,080
$1,141.88
$18.36M
Michael Hsing
10 Feb 2026
CEO
Sold on a plan
6,325
$1,136.75
$7.19M
Michael Hsing
10 Feb 2026
CEO
Sold on a plan
4,302
$1,132.01
$4.87M
Victor K Lee
9 Feb 2026
Director
Sold on a plan
400
$1,212.16
$484.86K
Theodore Blegen
2 Feb 2026
EVP and CFO
Sold on a plan
80
$1,139.49
$91.16K
Theodore Blegen
2 Feb 2026
EVP and CFO
Sold on a plan
80
$1,137.81
$91.02K
Theodore Blegen
2 Feb 2026
EVP and CFO
Sold on a plan
120
$1,136.35
$136.36K
Theodore Blegen
2 Feb 2026
EVP and CFO
Sold on a plan
120
$1,135.49
$136.26K
Theodore Blegen
2 Feb 2026
EVP and CFO
Sold on a plan
241
$1,134.41
$273.39K
Theodore Blegen
2 Feb 2026
EVP and CFO
Sold on a plan
379
$1,133.47
$429.59K
Theodore Blegen
2 Feb 2026
EVP and CFO
Sold on a plan
322
$1,132.67
$364.72K
Theodore Blegen
2 Feb 2026
EVP and CFO
Sold on a plan
198
$1,131.70
$224.08K
Theodore Blegen
2 Feb 2026
EVP and CFO
Sold on a plan
320
$1,130.48
$361.75K
Theodore Blegen
2 Feb 2026
EVP and CFO
Sold on a plan
240
$1,129.28
$271.03K
Theodore Blegen
2 Feb 2026
EVP and CFO
Sold on a plan
240
$1,128.43
$270.82K
Theodore Blegen
2 Feb 2026
EVP and CFO
Sold on a plan
80
$1,127.39
$90.19K
Theodore Blegen
2 Feb 2026
EVP and CFO
Sold on a plan
200
$1,126.58
$225.32K
Theodore Blegen
2 Feb 2026
EVP and CFO
Sold on a plan
40
$1,122.56
$44.90K
Theodore Blegen
2 Feb 2026
EVP and CFO
Sold on a plan
80
$1,120.77
$89.66K
Theodore Blegen
2 Feb 2026
EVP and CFO
Sold on a plan
40
$1,117.11
$44.68K
Theodore Blegen
2 Feb 2026
EVP and CFO
Sold on a plan
220
$1,110.58
$244.33K
Theodore Blegen
2 Jan 2026
EVP and CFO
Sold on a plan
80
$946.62
$75.73K
Theodore Blegen
2 Jan 2026
EVP and CFO
Sold on a plan
40
$945.00
$37.80K
Theodore Blegen
2 Jan 2026
EVP and CFO
Sold on a plan
650
$944.35
$613.83K
Theodore Blegen
2 Jan 2026
EVP and CFO
Sold on a plan
539
$943.71
$508.66K
Theodore Blegen
2 Jan 2026
EVP and CFO
Sold on a plan
74
$942.42
$69.74K
Theodore Blegen
2 Jan 2026
EVP and CFO
Sold on a plan
406
$941.60
$382.29K
Theodore Blegen
2 Jan 2026
EVP and CFO
Sold on a plan
40
$940.03
$37.60K
Theodore Blegen
2 Jan 2026
EVP and CFO
Sold on a plan
117
$939.75
$109.95K
Theodore Blegen
2 Jan 2026
EVP and CFO
Sold on a plan
460
$938.52
$431.72K
Theodore Blegen
2 Jan 2026
EVP and CFO
Sold on a plan
120
$936.50
$112.38K
Theodore Blegen
2 Jan 2026
EVP and CFO
Sold on a plan
80
$935.33
$74.83K
Theodore Blegen
2 Jan 2026
EVP and CFO
Sold on a plan
40
$934.74
$37.39K
Theodore Blegen
2 Jan 2026
EVP and CFO
Sold on a plan
80
$933.64
$74.69K
Theodore Blegen
2 Jan 2026
EVP and CFO
Sold on a plan
194
$930.86
$180.59K
Theodore Blegen
2 Jan 2026
EVP and CFO
Sold on a plan
80
$927.61
$74.21K
Victor K Lee
2 Jan 2026
Director
Sold on a plan
600
$930.86
$558.52K
Victor K Lee
24 Dec 2025
Director
Sold on a plan
80
$955.08
$76.41K
Victor K Lee
24 Dec 2025
Director
Sold on a plan
200
$953.70
$190.74K
Victor K Lee
24 Dec 2025
Director
Sold on a plan
83
$952.37
$79.05K
Victor K Lee
24 Dec 2025
Director
Sold on a plan
160
$951.60
$152.26K
Victor K Lee
24 Dec 2025
Director
Sold on a plan
280
$950.64
$266.18K
Victor K Lee
24 Dec 2025
Director
Sold on a plan
197
$949.70
$187.09K
Theodore Blegen
1 Dec 2025
EVP and CFO
Sold on a plan
56
$911.59
$51.05K
Theodore Blegen
1 Dec 2025
EVP and CFO
Sold on a plan
1,984
$909.00
$1.80M
Theodore Blegen
1 Dec 2025
EVP and CFO
Sold on a plan
480
$908.69
$436.17K
Theodore Blegen
1 Dec 2025
EVP and CFO
Sold on a plan
80
$907.59
$72.61K
Theodore Blegen
1 Dec 2025
EVP and CFO
Sold on a plan
80
$906.84
$72.55K
Theodore Blegen
1 Dec 2025
EVP and CFO
Sold on a plan
120
$904.38
$108.53K
Theodore Blegen
1 Dec 2025
EVP and CFO
Sold on a plan
40
$902.31
$36.09K
Theodore Blegen
1 Dec 2025
EVP and CFO
Sold on a plan
80
$901.88
$72.15K
Theodore Blegen
1 Dec 2025
EVP and CFO
Sold on a plan
40
$900.88
$36.04K
Theodore Blegen
1 Dec 2025
EVP and CFO
Sold on a plan
40
$899.73
$35.99K
Showing 250 of 1,775 transactions. The figures above use every one of them.

What was left out

Form 4 filings counted 905
Amendments (4/A) skipped 1
Filings about a different issuer 0
Unreadable filings 0
Joint filings 0
Sales on a Rule 10b5-1 plan 572
Sales straight out of an exercise 4
Sales at will 1,199
Transactions with no price 0
Shares from compensation/vesting 6,418,151
Sales filed before the plan box existed 924
History held since 30 Oct 2006