sec filings
Insider trades
Open-market buys and sales that company insiders report to the SEC on .
Side
Planned sales
Role
MPWR
Updated 10/6/2026, 8:11 AM ET.
| Stock | Side | Value | Insider | Shares | Avg price | Filed | Tags | Filing |
|---|---|---|---|---|---|---|---|---|
| MPWR MONOLITHIC POWER SYSTEMS, INC. | Sale | $40,349,047 | Hsing Michael CEO, Director | 30,000 sh | at $1,344.97 | Filed Sep 30, 5:21 PM ET | Filing | |
| MPWR MONOLITHIC POWER SYSTEMS, INC. | Sale | $41,527 | DEAN ROBERT W II Interim CFO | 32 sh | at $1,297.72 | Filed Aug 26, 7:22 PM ET | Filing | |
| MPWR MONOLITHIC POWER SYSTEMS, INC. | Sale | $64,079 | CHANG KUO WEI HERBERT Director | 50 sh | at $1,281.57 | Filed Aug 25, 7:13 PM ET | Filing | |
| MPWR MONOLITHIC POWER SYSTEMS, INC. | Sale | $8,482 | DEAN ROBERT W II Interim CFO | 6 sh | at $1,413.64 | Filed Aug 19, 8:44 PM ET | Filing | |
| MPWR MONOLITHIC POWER SYSTEMS, INC. | Sale | $71,000 | CHANG KUO WEI HERBERT Director | 50 sh | at $1,420.00 | Filed Aug 13, 5:23 PM ET | Filing | |
| MPWR MONOLITHIC POWER SYSTEMS, INC. | Sale | $141,148 | DEAN ROBERT W II Interim CFO | 105 sh | at $1,344.27 | Filed Aug 6, 6:20 PM ET | Filing | |
| MPWR MONOLITHIC POWER SYSTEMS, INC. | Sale | $40,318 | Sciammas Maurice EVP, WW Sales & Marketing | 30 sh | at $1,343.94 | Filed Aug 5, 5:33 PM ET | Filing | |
| MPWR MONOLITHIC POWER SYSTEMS, INC. | Sale | $20,245,937 | Sciammas Maurice EVP, WW Sales & Marketing | 15,000 sh | at $1,349.73 | Filed Jul 17, 5:43 PM ET | Filing |