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MPWR

Monolithic Power Systems Inc
$1,376.41 +85.03 (+6.58%) At close · Jul 14
Market Cap
$66.46B
Shares
49,130,000

Trades by corporate insiders — officers, directors and holders of more than 10% of the shares — disclosed to the SEC on Forms 3, 4 and 5. Form 4 must be filed within two business days of the trade.

Insider Sentiment Score

Peer-relative 0–100 rank of how aggressively insiders accumulated over the trailing 90 days. See the full ranking.

6
Net buyers
-8
Net shares bought
-0.22%
Net buy value
-$172,014,742
Date Insider Type Shares
2026-07-01
Sciammas Maurice
Sell
30
2026-06-01
Sciammas Maurice
Sell
30
2026-05-29
Sciammas Maurice
Gift
12,472
2026-05-27
Tseng Saria
Sell
7,565
2026-05-26
Zhou Jeff
Sell
486
2026-05-26
DEAN ROBERT W II
Sell
22
2026-05-22
Tseng Saria
Gift
200
2026-05-22
Tseng Saria
Sell
5,000
2026-05-18
Hsing Michael
Sell
352
2026-05-18
Hsing Michael
Sell
4,082
2026-05-18
Hsing Michael
Sell
3,424
2026-05-18
Hsing Michael
Sell
608
2026-05-18
DEAN ROBERT W II
Sell
4
2026-05-18
Hsing Michael
Sell
862
2026-05-18
Hsing Michael
Sell
6,688
2026-05-18
Hsing Michael
Sell
130
2026-05-18
Hsing Michael
Sell
5,737
2026-05-18
Hsing Michael
Sell
5,819
2026-05-18
Hsing Michael
Sell
551
2026-05-18
Hsing Michael
Sell
5,049
2026-05-18
Hsing Michael
Sell
2,929
2026-05-18
Hsing Michael
Sell
3,769
2026-05-15
Sciammas Maurice
Sell
1,717
2026-05-15
Sciammas Maurice
Sell
50
2026-05-15
Sciammas Maurice
Sell
3,741
2026-05-15
Sciammas Maurice
Sell
2,010
2026-05-15
Sciammas Maurice
Sell
1,312
2026-05-15
Sciammas Maurice
Sell
447
2026-05-15
Sciammas Maurice
Sell
2,020
2026-05-15
Sciammas Maurice
Sell
703
2026-05-13
Sciammas Maurice
Gift
1,563
2026-05-13
Sciammas Maurice
Gift
1,563
2026-05-13
DEAN ROBERT W II
Other
2,156
2026-05-06
Xiao Deming
Sell
3,329
2026-05-06
Wynne Eileen
Sell
335
2026-05-06
Elmiger Eugen J
Sell
814
2026-05-06
Elmiger Eugen J
Sell
320
2026-05-06
Elmiger Eugen J
Sell
514
2026-05-06
Elmiger Eugen J
Sell
1,355
2026-05-06
Xiao Deming
Sell
11,597
2026-05-06
Xiao Deming
Sell
14,167
2026-05-06
Zhou Jeff
Sell
500
2026-05-06
Elmiger Eugen J
Sell
2,587
2026-05-06
Elmiger Eugen J
Sell
834
2026-05-06
Elmiger Eugen J
Sell
2,619
2026-05-06
Elmiger Eugen J
Sell
1,879
2026-05-06
Elmiger Eugen J
Sell
1,078
2026-05-06
Xiao Deming
Sell
907
2026-05-05
Sciammas Maurice
Sell
380
2026-05-05
Zhou Jeff
Sell
514
Legend Buy — open-market purchase Sell — open-market sale Shares acquired Shares disposed (gift, conversion, tax…)
Showing 1–50 of 1,628 transactions
Key facts CIK 1280452 CUSIP 609839105 13F (30d) 120 filings 96 filers Visit website Investor relations