MPWR
Monolithic Power Systems, Inc.
38 disclosed insider filings · 5 distinct insiders · latest Sep 30, 2026
Total filings
38
5 insiders
Insider buys
0
$0
Insider sells
32
$61M
Grants & other
0
$0
All disclosed filings
Same-day tranches are grouped per insider - the Lots column shows how many individual executions a row covers; Price is the value-weighted average.
| Filed | Tx date | Insider | Type | Qty | Avg price | Value | Lots | Source |
|---|---|---|---|---|---|---|---|---|
| Sep 30, 2026 | Sep 28, 2026 | Michael Hsing INSIDER | SELL | 30,000 | $1,344.97 | $40M | 8 | EDGAR |
| Sep 2, 2026 | Aug 31, 2026 | Saria Tseng INSIDER | GIFT | 4,000 | — | — | 2 | EDGAR |
| Aug 26, 2026 | Aug 24, 2026 | Robert W II Dean INSIDER | SELL | 32 | $1,297.72 | $42K | — | EDGAR |
| Aug 26, 2026 | Aug 24, 2026 | Robert W II Dean INSIDER | OTHER | 5 | — | — | — | EDGAR |
| Aug 25, 2026 | Aug 24, 2026 | Kuo Wei Herbert Chang INSIDER | SELL | 50 | $1,281.57 | $64K | — | EDGAR |
| Aug 19, 2026 | Aug 17, 2026 | Robert W II Dean INSIDER | SELL | 6 | $1,413.64 | $8K | — | EDGAR |
| Aug 13, 2026 | Aug 11, 2026 | Kuo Wei Herbert Chang INSIDER | SELL | 50 | $1,420 | $71K | — | EDGAR |
| Aug 6, 2026 | Aug 5, 2026 | Robert W II Dean INSIDER | SELL | 105 | $1,344.27 | $141K | — | EDGAR |
| Aug 6, 2026 | Aug 4, 2026 | Maurice Sciammas INSIDER | GIFT | 50,000 | — | — | 2 | EDGAR |
| Aug 5, 2026 | Aug 3, 2026 | Maurice Sciammas INSIDER | SELL | 30 | $1,343.94 | $40K | — | EDGAR |
| Jul 28, 2026 | Jul 25, 2026 | Robert W II Dean INSIDER | OTHER | 1,359 | — | — | — | EDGAR |
| Jul 17, 2026 | Jul 15, 2026 | Maurice Sciammas INSIDER | SELL | 15,000 | $1,349.73 | $20M | 18 | EDGAR |