Monolithic Power Systems (MPWR) Insider Trading & Ownership $538.80 +5.67 (+1.06%) As of 04/14/2025 04:00 PM Eastern Add Compare Share Share Insider Trades Stock AnalysisAnalyst ForecastsChartCompetitorsDividendEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSustainabilityTrendsBuy This Stock Monolithic Power Systems (NASDAQ:MPWR) Insider Buying and Selling ActivityCurrentInsider OwnershipPercentage3.70%Number OfInsiders Buying(Last 12 Months)0Number OfInsiders Selling(Last 12 Months)8Amount OfInsider Selling(Last 12 Months)$124.13 M Get MPWR Insider Trade Alerts Want to know when executives and insiders are buying or selling Monolithic Power Systems stock? Sign up for InsiderTrades.com's daily newsletter to get the latest insider transactions delivered to your inbox daily. Email Address MPWR Insider Buying and Selling by Quarter Remove Ads Monolithic Power Systems Insider and Congressional Trades History Insiders and Members of Congress Insiders Only Members of Congress Only Transaction Type Custom Range 1 Month 3 Months 6 Months Year-to-Date 1 Year 2 Years 3 Years Time Frame * Start Date * End Date Export to Excel Transaction DateNameTitleBuy/SellNumber of SharesAverage Share PriceTotal TransactionDetails2/7/2025Maurice SciammasEVPSell7,000$701.98$4,913,860.00 1/13/2025Robert Bresnahan, Jr.U.S. Congress Member (R-PA)Sell$587.35$1,001 - $15,00012/9/2024Theodore BlegenCFOSell2,500$600.00$1,500,000.00 11/8/2024Deming XiaoEVPSell866$765.14$662,611.24 11/8/2024Theodore BlegenCFOSell734$765.15$561,620.10 11/1/2024Theodore BlegenCFOSell2,500$772.96$1,932,400.00 10/7/2024Maurice SciammasEVPSell11,000$929.59$10,225,490.00 10/1/2024Theodore BlegenCFOSell2,500$908.36$2,270,900.00 9/3/2024Theodore BlegenCFOSell2,500$904.20$2,260,500.00 8/27/2024Deming XiaoEVPSell9,259$950.00$8,796,050.00 8/22/2024Deming XiaoEVPSell10,000$950.00$9,500,000.00 Get Insider Trades Delivered To Your InboxEnter your email address below to receive a concise daily summary of insider buying activity, insider selling activity and changes in hedge fund holdings. 8/8/2024Deming XiaoEVPSell859$778.39$668,637.01 8/8/2024Michael HsingCEOSell2,790$778.39$2,171,708.10 8/8/2024Theodore BlegenCFOSell728$778.39$566,667.92 8/1/2024Theodore BlegenCFOSell2,500$852.51$2,131,275.00 7/22/2024Deming XiaoEVPSell3,205$831.58$2,665,213.90 7/22/2024Michael HsingCEOSell9,614$831.58$7,994,810.12 7/22/2024Theodore BlegenCFOSell2,580$831.58$2,145,476.40 7/8/2024Maurice SciammasEVPSell10,999$843.83$9,281,286.17 7/1/2024Michael HsingCEOSell2,672$804.57$2,149,811.04 7/1/2024Saria TsengEVPSell37,093$808.20$29,978,562.60 7/1/2024Theodore BlegenCFOSell2,500$804.19$2,010,475.00 6/28/2024Victor K LeeDirectorSell1,000$820.46$820,460.00 6/3/2024Michael HsingCEOSell8,000$731.08$5,848,640.00 6/3/2024Theodore BlegenCFOSell2,416$731.43$1,767,134.88 5/22/2024Deming XiaoEVPSell1,300$769.40$1,000,220.00 5/20/2024Jeff ZhouDirectorSell200$750.00$150,000.00 5/15/2024Kuo Wei Herbert ChangDirectorSell200$735.00$147,000.00 5/8/2024Michael HsingCEOSell2,824$690.00$1,948,560.00 5/8/2024Saria TsengEVPSell869$690.02$599,627.38 5/8/2024Theodore BlegenCFOSell737$689.98$508,515.26 5/3/2024Tommy TubervilleU.S. Congress Member (R-AL)Sell$707.22$1,001 - $15,0005/1/2024Michael HsingCEOSell8,000$661.85$5,294,800.00 5/1/2024Theodore BlegenCFOSell2,500$663.29$1,658,225.00 (Data available from 1/1/2013 forward) MPWR Insider Trading Activity - Frequently Asked Questions Who is on Monolithic Power Systems's Insider Roster? The list of insiders at Monolithic Power Systems includes Deming Xiao, James C Moyer, Jeff Zhou, Kuo Wei Herbert Chang, Maurice Sciammas, Michael Hsing, Saria Tseng, Theodore Blegen, and Victor K Lee. Learn more on insiders at MPWR. What percentage of Monolithic Power Systems stock is owned by insiders? 3.70% of Monolithic Power Systems stock is owned by insiders. Learn more on MPWR's insider holdings. Which Monolithic Power Systems insiders have been selling company stock? The following insiders have sold MPWR shares in the last 24 months: Deming Xiao ($39,054,535.84), James C Moyer ($2,047,972.00), Jeff Zhou ($300,114.00), Kuo Wei Herbert Chang ($812,085.00), Maurice Sciammas ($46,791,257.27), Michael Hsing ($116,981,662.33), Saria Tseng ($59,464,807.80), Theodore Blegen ($50,519,873.84), and Victor K Lee ($820,460.00). How much insider selling is happening at Monolithic Power Systems? Insiders have sold a total of 492,223 Monolithic Power Systems shares in the last 24 months for a total of $316,792,768.08 sold. Which members of congress are trading Monolithic Power Systems? Robert Bresnahan, Jr. (R-PA) and Tommy Tuberville (R-AL) have sold shares of Monolithic Power Systems in the last year totaling $16,000. Monolithic Power Systems Key ExecutivesMr. Michael R. Hsing (Age 64)Founder, Chairman, President & CEO Compensation: $2.33MMr. Theodore Bernie Blegen (Age 66)Executive VP & CFO Compensation: $1.13MMr. Deming Xiao (Age 61)Executive Vice President of Global Operations Compensation: $1.23M1 recent tradesMs. Saria Tseng (Age 53)EVP of Strategic Corporate Development, General Counsel & Corporate Secretary Compensation: $1.23MMr. Maurice Sciammas (Age 64)Executive Vice President of Worldwide Sales & Marketing Compensation: $1.23M1 recent tradesMs. Genevieve CunninghamSenior Manager of Marketing Communications More Insider Trading Tools from MarketBeat Related Companies ADI Insider Trading INTC Insider Trading MU Insider Trading MRVL Insider Trading MCHP Insider Trading FSLR Insider Trading ALTR Insider Trading SWKS Insider Trading MTSI Insider Trading LSCC Insider Trading Insider Tracking Tools CEO Purchases/Sales CFO Purchases/Sales Top Insider Buying Stocks Top Insider Selling Stocks Insider Trades Screener Insider Trades Newsletter Congressional Stock Trades Insider Trading By Country U.S. Insider Trading Activity Canadian Insider Trading Activity U.K. Insider Trading Activity Australia Insider Trading Activity Latest Articles Top 3 Large Cap Stocks Insiders Bought in Q1: Buy, Sell, or HoldJoby Aviation: Operational Momentum vs. Market SentimentMicroStrategy Sees Insider Buy-Sell Action in Q1Casey’s General Stores Insider Buys Shares of This Must-Own StockNVIDIA Insiders Sell: This Is What It Means for the Market This page (NASDAQ:MPWR) was last updated on 4/15/2025 by MarketBeat.com Staff From Our Partners[Action Required] Claim Your FREE IRS Loophole GuideThis shouldn't surprise anyone who's been paying attention, but... 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