MPWR

MONOLITHIC POWER SYSTEMS INC

MONOLITHIC POWER SYSTEMS INC (MPWR) has 12 SEC Form 4 filings (26 transaction rows) in the rolling window, disclosed by 7 distinct insiders. Most recent filing: Jul 6, 2026.

The most active filer is EVP, WW Sales & Marketing Sciammas Maurice with 3 filings. Insiders have net sold $86.0M over the trailing 6 months.

  • Industry:Semiconductors
  • CEO:Michael R. Hsing
  • Employees:4,017
  • HQ:West Palm Beach, FL, US
  • IPO:2004-11-19

Insider Buying

$0

reported purchases (SEC code P)

Insider Selling

$86.0M

reported sales (SEC code S)

Unique Insiders

7

in the rolling window

Market Cap

$64.1B

latest known value

Source
Sale$41KJul 6SEC ↗
Tseng SariaFirst filing
Sale$12.9MMay 29SEC ↗
Sale$36KMay 28SEC ↗
Sale$816KMay 27SEC ↗
DEAN ROBERT W IIFirst filing
Sale$6KMay 20SEC ↗
Elmiger Eugen JFirst filing
Sale$19.0MMay 8SEC ↗
Xiao DemingFirst filing
Sale$49.6MMay 8SEC ↗
Wynne EileenFirst filing
Sale$530KMay 8SEC ↗
Zhou JeffFirst filing
Sale$1.6MMay 6SEC ↗
Zhou JeffFirst filing
Sale$825KMay 6SEC ↗
Sale$602KMay 6SEC ↗
Sciammas MauriceFirst filing
Sale$48KMay 6SEC ↗

Congress trading MPWR

See timeline →
  • RRep. Byron DonaldsSale$1,001 - $15,0002026-06-05
  • RRep. Byron DonaldsSale$1,001 - $15,0002026-06-05

STOCK Act disclosures are filed up to 45 days after the trade. Amount is a disclosed range, not an exact figure.

Related companies

MONOLITHIC POWER SYSTEMS INC is in the Technology sector.