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Monolithic Power Systems (MPWR) Insider Trading & Ownership

Monolithic Power Systems logo
$1,468.11 -18.22 (-1.23%)
Closing price 05/19/2026 04:00 PM Eastern
Extended Trading
$1,484.63 +16.52 (+1.12%)
As of 07:39 AM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Massive. Learn more.

Monolithic Power Systems (NASDAQ:MPWR) Insider Buying and Selling Activity

Current
Insider Ownership
Percentage
3.40%
Number Of
Insiders Buying
(Last 12 Months)
0
Number Of
Insiders Selling
(Last 12 Months)
10
Amount Of
Insider Selling
(Last 12 Months)
$389.40M
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MPWR Insider Buying and Selling by Quarter

Monolithic Power Systems Insider and Congressional Trades History

Transaction DateInsiderBuy/SellNumber of SharesAverage Share PriceTotal TransactionDetails
5/15/2026Sell12,000$1,561.40$18,736,800.00  
5/6/2026Sell30,000$1,654.55$49,636,500.00  
5/6/2026
Eileen Wynne
Eileen Wynne
Director
Sell335$1,582.68$530,197.80  
5/6/2026Sell12,000$1,584.96$19,019,520.00  
5/6/2026
Jeff Zhou
Jeff Zhou
Director
Sell500$1,650.00$825,000.00  
5/5/2026
Jeff Zhou
Jeff Zhou
Director
Sell1,014$1,587.06$1,609,278.84  
5/5/2026Sell380$1,583.81$601,847.80  
5/4/2026Sell30$1,588.73$47,661.90  
4/8/2026Sell8,963$1,305.22$11,698,686.86  
4/6/2026Sell7,636$1,167.95$8,918,466.20  
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4/1/2026Sell30$1,116.44$33,493.20  
4/1/2026Sell1,400$1,133.52$1,586,928.00  
3/30/2026Sell25,674$1,010.50$25,943,577.00  
3/20/2026Sell30$1,095.07$32,852.10  
3/10/2026
Ro Khanna
Ro Khanna
House (D-CA)
Sell$1,055.82$1,001 - $15,000
2/11/2026Sell200$1,179.97$235,994.00  
2/9/2026
Victor K Lee
Victor K Lee
Director
Sell400$1,212.16$484,864.00  
2/6/2026Sell22,875$1,171.16$26,790,285.00  
2/6/2026Sell22,875$1,171.16$26,790,285.00  
2/6/2026Sell22,875$1,171.16$26,790,285.00  
2/6/2026Sell21,725$1,171.16$25,443,451.00  
2/5/2026
Ro Khanna
Ro Khanna
House (D-CA)
Buy$1,155.99$1,001 - $15,000
2/4/2026
Markwayne Mullin
Markwayne Mullin
Senate (R-OK)
Buy$1,136.83$15,001 - $50,000
2/2/2026Sell3,000$1,129.76$3,389,280.00  
1/5/2026
Markwayne Mullin
Markwayne Mullin
Senate (R-OK)
Buy$955.03$15,001 - $50,000
1/2/2026Sell3,000$940.47$2,821,410.00  
1/2/2026
Victor K Lee
Victor K Lee
Director
Sell600$930.86$558,516.00  
12/24/2025
Victor K Lee
Victor K Lee
Director
Sell1,000$951.72$951,720.00  
12/1/2025Sell3,000$908.21$2,724,630.00  
11/26/2025Sell20,000$926.47$18,529,400.00  
11/25/2025Sell100$896.97$89,697.00  
11/24/2025Sell3,976$895.23$3,559,434.48  
11/21/2025Sell100$873.97$87,397.00  
11/19/2025Sell27,966$881.66$24,656,503.56  
11/19/2025Sell7,034$870.21$6,121,057.14  
11/5/2025Sell200$986.81$197,362.00  
11/3/2025Sell3,000$1,024.43$3,073,290.00  
10/24/2025Sell1,300$1,087.62$1,413,906.00  
10/20/2025
Michael Guest
Michael Guest
House (R-MS)
Buy$1,031.59$1,001 - $15,000
10/16/2025Sell2,812$1,025.72$2,884,324.64  
10/15/2025Sell14,028$1,016.18$14,254,973.04  
10/1/2025Sell3,000$913.22$2,739,660.00  
9/18/2025Sell1,400$900.00$1,260,000.00  
9/18/2025Sell14,510$914.45$13,268,669.50  
9/2/2025Sell3,000$814.34$2,443,020.00  
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8/27/2025
Jeff Zhou
Jeff Zhou
Director
Sell193$870.00$167,910.00  
8/13/2025
Jeff Zhou
Jeff Zhou
Director
Sell400$850.00$340,000.00  
8/12/2025
Jeff Zhou
Jeff Zhou
Director
Sell200$830.00$166,000.00  
8/1/2025Sell39,999$780.00$31,199,220.00  
8/1/2025Sell3,000$750.00$2,250,000.00  
7/1/2025Sell6,000$750.00$4,500,000.00  
(Data available from 1/1/2013 forward)

MPWR Insider Trading Activity - Frequently Asked Questions

3.40% of Monolithic Power Systems stock is owned by insiders. Learn more on MPWR's insider holdings.

The following insiders have sold MPWR shares in the last 24 months: Carintia Martinez ($1,260,000.00), Deming Xiao ($130,918,737.15), Eileen Wynne ($530,197.80), Eugen J Elmiger ($19,019,520.00), Jeff Zhou ($3,258,188.84), Kuo Wei Herbert Chang ($311,894.00), Maurice Sciammas ($113,845,927.35), Michael Hsing ($18,164,969.26), Saria Tseng ($155,267,778.84), Theodore Blegen ($66,531,190.30), and Victor K Lee ($2,815,560.00).

Insiders have sold a total of 503,275 Monolithic Power Systems shares in the last 24 months for a total of $511,923,963.54 sold.

Ro Khanna (D-CA), Markwayne Mullin (R-OK), and Michael Guest (R-MS) have bought shares of Monolithic Power Systems in the last year totaling $81,000. Ro Khanna (D-CA) has sold shares totaling $8,000.



This page (NASDAQ:MPWR) was last updated on 5/20/2026 by MarketBeat.com Staff.
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