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 | ||||||
|---|---|---|---|---|---|---|
| EVP, WW Sales & Marketing | Sale | 30 | $41K | Jul 6 | SEC ↗ | |
Tseng SariaFirst filing | EVP & General Counsel | Sale | 7,565 | $12.9M | May 29 | SEC ↗ |
| Interim CFO | Sale | 22 | $36K | May 28 | SEC ↗ | |
| Director | Sale | 486 | $816K | May 27 | SEC ↗ | |
DEAN ROBERT W IIFirst filing | Interim CFO | Sale | 4 | $6K | May 20 | SEC ↗ |
Elmiger Eugen JFirst filing | Director | Sale | 12,000 | $19.0M | May 8 | SEC ↗ |
Xiao DemingFirst filing | EVP, Global Operations | Sale | 30,000 | $49.6M | May 8 | SEC ↗ |
Wynne EileenFirst filing | Director | Sale | 335 | $530K | May 8 | SEC ↗ |
Zhou JeffFirst filing | Director | Sale | 1,014 | $1.6M | May 6 | SEC ↗ |
Zhou JeffFirst filing | Director | Sale | 500 | $825K | May 6 | SEC ↗ |
| EVP, WW Sales & Marketing | Sale | 380 | $602K | May 6 | SEC ↗ | |
Sciammas MauriceFirst filing | EVP, WW Sales & Marketing | Sale | 30 | $48K | May 6 | SEC ↗ |
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.