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Company profile

MONOLITHIC POWER SYSTEMS, INC. insider acquisitions

Company CIK 0001280452 · Reported insider acquisitions and filing context.

Company filings at SEC ↗
MPWR · Nasdaq

These are company listings. A transaction is linked to a particular security only when the filing provides enough information.

Company activity summary

By transaction date, as of October 23, 2026.

7 days30 days90 daysOverlapping periods · securities and currencies kept separate

No records are loaded for this 90-day transaction window. This does not establish that no transactions occurred.

Known purchase value sums available amounts for non-derivative purchases only. Missing amounts are excluded. “Currency not specified” does not establish that the amounts share a currency. These summaries use all matching loaded records, while the timeline below covers only the current page.

Transaction timeline

Who reported an acquisition, and when the transaction occurred.

Reported acquisitions by transaction dateEach row is a reporting owner. Select a marker to open its transaction details. Jointly reported transactions appear for each associated reporting owner, without dividing quantities or amounts.Tseng SariaTseng SariaSciammas MauriceSciammas MauriceBLEGEN THEODOREBLEGEN THEODOREHsing MichaelHsing MichaelXiao DemingXiao DemingTseng Saria · December 24, 2025 · Gift received · Common StockSciammas Maurice · November 13, 2025 · Gift received · Common StockTseng Saria · October 25, 2025 · Stock award · Common StockBLEGEN THEODORE · October 25, 2025 · Stock award · Common StockHsing Michael · October 25, 2025 · Stock award · Common StockXiao Deming · October 25, 2025 · Stock award · Common StockSciammas Maurice · October 25, 2025 · Stock award · Common StockOct 25, 2025Dec 24, 2025
PurchaseStock awardGift receivedExercise / conversionConversionOther acquisition

7 dated transactions · 5 of 5 reporting owners shown. Select one owner to focus the chart.

View timeline as a table
Transaction dateCompany / securityReporting ownersAcquisition type
Dec 24, 2025MONOLITHIC POWER SYSTEMS, INC.Common StockTseng SariaGift received
Nov 13, 2025MONOLITHIC POWER SYSTEMS, INC.Common StockSciammas MauriceGift received
Oct 25, 2025MONOLITHIC POWER SYSTEMS, INC.Common StockTseng SariaStock award
Oct 25, 2025MONOLITHIC POWER SYSTEMS, INC.Common StockBLEGEN THEODOREStock award
Oct 25, 2025MONOLITHIC POWER SYSTEMS, INC.Common StockHsing MichaelStock award
Oct 25, 2025MONOLITHIC POWER SYSTEMS, INC.Common StockXiao DemingStock award
Oct 25, 2025MONOLITHIC POWER SYSTEMS, INC.Common StockSciammas MauriceStock award

Only transactions on this page are shown. Date windows end on the latest transaction date in this sample. Joint filings may appear on more than one row. Sales are not included. Share-price charts use a separate data source.

Share price & reported acquisitions

Daily closing prices from a separate source. The date window above also filters prices; reporting-owner and transaction-type selections filter the markers.

Price history is not available

Market-price history is not connected yet.

MPWR · Currency not specified. A marker uses that day's closing price, not the reported transaction price. No price is substituted for a missing trading day.

Reported acquisitions

Filing-date filters apply to the list and timeline. The summary above uses transaction dates.

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Reported insider acquisitions, ordered by filing date, newest first. Currency is shown only when reported.
Filed / transactedReporting ownersType / securityQuantityPrice / reference valueDetails
Trade:
Tseng SariaEVP & General Counsel
Gift receivedCommon StockNon-derivative security · Code G1,0000Value: 0Currency not specifiedView ↗
Trade:
Sciammas MauriceEVP, WW Sales & Marketing
Gift receivedCommon StockNon-derivative security · Code G4,5300Value: 0Currency not specifiedView ↗
Trade:
Tseng SariaEVP & General Counsel
Stock awardCommon StockNon-derivative security · Code A135,5200Value: 0Currency not specifiedView ↗
Trade:
BLEGEN THEODOREEVP and CFO
Stock awardCommon StockNon-derivative security · Code A87,6900Value: 0Currency not specifiedView ↗
Trade:
Hsing MichaelCEO · Director
Stock awardCommon StockNon-derivative security · Code A302,9200Value: 0Currency not specifiedView ↗
Trade:
Xiao DemingEVP, Global Operations
Stock awardCommon StockNon-derivative security · Code A135,5200Value: 0Currency not specifiedView ↗
Trade:
Sciammas MauriceEVP, WW Sales & Marketing
Stock awardCommon StockNon-derivative security · Code A135,5200Value: 0Currency not specifiedView ↗

Reporting owners are associated with a filing. Jointly reported amounts are not allocated to individual owners. Historical coverage is still being built. Read the methodology →