Livermore

MONOLITHIC POWER SYSTEMS, INC.

MPWR
Exchange
Nasdaq
Industry
Semiconductors & Related Devices
SEC CIK
0001280452

Insider trades

Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.

Insider trades
Filed (ET)Trade dateInsiderTransactionSharesAvg priceValueShares afterHolding changeFiling
Jul 6, 2021Jul 1, 2021Tseng SariaVP & General CounselSSaleCommon Stock−4.31K$370.45−$1.59M262.57K−1.6%SEC
Jul 6, 2021Jul 1, 2021Xiao DemingPres. of MPS Asia OperationsSSaleCommon Stock−4.31K$370.45−$1.59M316.76K−1.3%SEC
Jul 6, 2021Jul 1, 2021Hsing MichaelCEOSSaleCommon Stock−10.96K$370.45−$4.06M1M−1.1%SEC
Jul 6, 2021Jul 1, 2021BLEGEN THEODORECFOSSaleCommon Stock−905$370.45−$335.26K147.75K−0.6%SEC
Jul 6, 2021Jul 1, 2021Sciammas MauriceSr. V.P.of Sales and MarketingSSaleCommon Stock−4.31K$370.45−$1.59M284.01K−1.5%SEC
Jul 6, 2021Jul 6, 2021Xiao DemingPres. of MPS Asia OperationsSSaleCommon Stock−7.73K$380.00−$2.94M309.03K−2.4%SEC
Jul 6, 2021Jul 6, 2021Zhou JeffDirectorSSaleCommon Stock−500$380.00−$190K9.51K−5.0%SEC
Jul 8, 2021Jul 7, 2021Zhou JeffDirectorSSaleCommon Stock−500$387.27−$193.64K9.01K−5.3%SEC
Jul 16, 2021Jul 14, 2021Zhou JeffDirectorSSaleCommon Stock−1K$392.66−$392.66K8.01K−11.1%SEC
Jul 16, 2021Jul 16, 2021Moyer James CDirectorSSaleCommon Stock−12K$381.4106−$4.58M233.84K−4.9%SEC
Jul 21, 2021Jul 20, 2021BLEGEN THEODORECFOSSaleCommon Stock−1.9K$382.77−$726.11K145.85K−1.3%SEC
Jul 21, 2021Jul 21, 2021Zhou JeffDirectorSSaleCommon Stock−1K$402.51−$402.51K7.01K−12.5%SEC
Jul 26, 2021Jul 23, 2021Zhou JeffDirectorSSaleCommon Stock−500$410.00−$205K6.51K−7.1%SEC
Aug 4, 2021Aug 2, 2021Xiao DemingPres. of MPS Asia OperationsSSaleCommon Stock−6.5K$455.0898−$2.96M307.4K−2.1%SEC
Aug 5, 2021Aug 4, 2021Zhou JeffDirectorSSaleCommon Stock−400$465.22−$186.09K6.11K−6.1%SEC
Aug 10, 2021Aug 6, 2021Moyer James CDirectorSSaleCommon Stock−7K$460.8654−$3.23M66.82K−9.5%SEC
Aug 11, 2021Aug 9, 2021BLEGEN THEODORECFOSSaleCommon Stock−1.47K$459.12−$676.74K133.72K−1.1%SEC
Aug 11, 2021Aug 9, 2021Tseng SariaVP & General CounselSSaleCommon Stock−2.05K$459.12−$942.57K260.51K−0.8%SEC
Aug 11, 2021Aug 9, 2021Hsing MichaelCEOSSaleCommon Stock−7.93K$459.12−$3.64M992.76K−0.8%SEC
Aug 11, 2021Aug 9, 2021Sciammas MauriceSr. V.P.of Sales and MarketingSSaleCommon Stock−2.05K$459.12−$942.57K281.96K−0.7%SEC
Aug 11, 2021Aug 9, 2021Xiao DemingPres. of MPS Asia OperationsSSaleCommon Stock−2.05K$459.12−$942.57K305.35K−0.7%SEC
Aug 16, 2021Aug 12, 2021Tseng SariaVP & General CounselSSaleCommon Stock−1.65K$457.10−$754.67K258.86K−0.6%SEC
Aug 16, 2021Aug 12, 2021Sciammas MauriceSr. V.P.of Sales and MarketingSSaleCommon Stock−1.65K$457.10−$754.67K280.31K−0.6%SEC
Aug 16, 2021Aug 12, 2021Hsing MichaelCEOSSaleCommon Stock−6.37K$457.10−$2.91M986.39K−0.6%SEC
Aug 16, 2021Aug 12, 2021Xiao DemingPres. of MPS Asia OperationsSSaleCommon Stock−1.65K$457.10−$754.67K303.7K−0.5%SEC
Aug 16, 2021Aug 12, 2021BLEGEN THEODORECFOSSaleCommon Stock−1.38K$457.10−$630.34K132.34K−1.0%SEC
Aug 23, 2021Aug 20, 2021Zhou JeffDirectorSSaleCommon Stock−300$477.00−$143.1K5.81K−4.9%SEC
Aug 23, 2021Aug 20, 2021BLEGEN THEODORECFOSSaleCommon Stock−1.9K$469.24−$890.15K130.44K−1.4%SEC
Aug 23, 2021Aug 19, 2021Xiao DemingPres. of MPS Asia OperationsSSaleCommon Stock−4.74K$462.00−$2.19M298.99K−1.6%SEC
Aug 26, 2021Aug 26, 2021Xiao DemingPres. of MPS Asia OperationsSSaleCommon Stock−6.5K$489.00−$3.18M292.49K−2.2%SEC
Aug 26, 2021Aug 24, 2021Zhou JeffDirectorSSaleCommon Stock−300$490.00−$147K5.51K−5.2%SEC
Aug 30, 2021Aug 30, 2021Xiao DemingPres. of MPS Asia OperationsSSaleCommon Stock−4.89K$500.00−$2.44M287.61K−1.7%SEC
Sep 21, 2021Sep 20, 2021BLEGEN THEODORECFOSSaleCommon Stock−1.9K$482.9878−$916.23K128.55K−1.5%SEC
Oct 5, 2021Oct 1, 2021Sciammas MauriceSr. V.P.of Sales and MarketingSSaleCommon Stock−4.33K$476.16−$2.06M275.98K−1.5%SEC
Oct 5, 2021Oct 1, 2021BLEGEN THEODORECFOSSaleCommon Stock−910$476.16−$433.31K127.64K−0.7%SEC
Oct 5, 2021Oct 1, 2021Hsing MichaelCEOSSaleCommon Stock−11.02K$476.16−$5.25M975.37K−1.1%SEC
Oct 5, 2021Oct 1, 2021Tseng SariaVP & General CounselSSaleCommon Stock−4.33K$476.16−$2.06M254.55K−1.7%SEC
Oct 20, 2021Oct 20, 2021BLEGEN THEODORECFOSSaleCommon Stock−1.9K$496.59−$942.03K125.74K−1.5%SEC
Nov 10, 2021Nov 8, 2021Sciammas MauriceSr. V.P.of Sales and MarketingSSaleCommon Stock−2.02K$548.27−$1.11M278.83K−0.7%SEC
Nov 10, 2021Nov 8, 2021Xiao DemingPres. of MPS Asia OperationsSSaleCommon Stock−2.02K$548.27−$1.11M281.26K−0.7%SEC
Nov 10, 2021Nov 8, 2021BLEGEN THEODORECFOSSaleCommon Stock−1.46K$548.27−$800.47K127.09K−1.1%SEC
Nov 10, 2021Nov 8, 2021Hsing MichaelCEOSSaleCommon Stock−7.81K$548.27−$4.28M987.16K−0.8%SEC
Nov 16, 2021Nov 12, 2021BLEGEN THEODORECFOSSaleCommon Stock−1.36K$553.42−$754.86K122.91K−1.1%SEC
Nov 16, 2021Nov 12, 2021Sciammas MauriceSr. V.P.of Sales and MarketingSSaleCommon Stock−1.63K$553.42−$899.31K272.33K−0.6%SEC
Nov 16, 2021Nov 12, 2021Xiao DemingPres. of MPS Asia OperationsSSaleCommon Stock−1.63K$553.42−$899.31K279.63K−0.6%SEC
Nov 16, 2021Nov 12, 2021Hsing MichaelCEOSSaleCommon Stock−6.27K$553.42−$3.47M961.29K−0.6%SEC
Nov 16, 2021Nov 12, 2021Tseng SariaVP & General CounselSSaleCommon Stock−1.63K$553.42−$899.31K250.91K−0.6%SEC
Nov 18, 2021Nov 12, 2021Moyer James CDirectorSSaleCommon Stock−2K$555.31−$1.11M64.82K−3.0%SEC
Nov 23, 2021Nov 22, 2021Xiao DemingPres. of MPS Asia OperationsSSaleCommon Stock−427$580.00−$247.66K279.2K−0.2%SEC
Nov 23, 2021Nov 22, 2021BLEGEN THEODORECFOSSaleCommon Stock−1.9K$567.5425−$1.08M121.02K−1.5%SEC