Victor K. Lee is Director at MONOLITHIC POWER SYSTEMS INC (MPWR). They have made 17 open-market trades across 1 company since 2012, most recently 2026-02-09.
CIK 0001292133
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
0 open-market purchases, against 17 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| MPWR | 27,756 | $33.6M |
Shares reported on the most recent Form 4, priced at the 2026-02-11 close.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| MPWR | SELL · 10b5-1 | 2026-02-09 | 2026-02-11 | $1212.16 | $485K | +0.6% | -12.7% | +32.7% |
| MPWR | SELL · 10b5-1 | 2026-01-02 | 2026-01-06 | $930.86 | $559K | +4.3% | +16.7% | +19.2% |
| MPWR | SELL · 10b5-1 | 2025-12-24 | 2025-12-29 | $951.49 | $1.6M | +3.2% | +25.0% | +7.8% |
| MPWR | SELL · 10b5-1 | 2024-06-28 | 2024-07-01 | $820.46 | $820K | +4.5% | +5.4% | +12.9% |
| MPWR | SELL | 2016-11-22 | 2016-11-23 | $83.74 | $377K | -6.7% | +0.8% | +5.2% |
| MPWR | SELL | 2016-11-22 | 2016-11-23 | $83.74 | $754K | -6.7% | +0.8% | +5.2% |
| MPWR | SELL | 2016-11-18 | 2016-11-22 | $82.56 | $283K | -7.3% | +0.2% | +4.8% |
| MPWR | SELL | 2016-05-27 | 2016-05-27 | $68.56 | $274K | +3.1% | -7.7% | +9.8% |
| MPWR | SELL | 2016-05-26 | 2016-05-27 | $67.61 | $338K | +3.1% | -7.7% | +9.8% |
| MPWR | SELL | 2016-05-26 | 2016-05-27 | $68.03 | $637K | +3.1% | -7.7% | +9.8% |
| MPWR | SELL | 2016-05-23 | 2016-05-25 | $65.48 | $982K | +4.9% | -1.1% | +13.5% |
| MPWR | SELL | 2015-11-24 | 2015-11-24 | $67.05 | $173K | -6.8% | -2.4% | -5.9% |
| MPWR | SELL | 2015-11-05 | 2015-11-06 | $63.48 | $952K | -6.8% | -2.4% | -6.7% |
| MPWR | SELL | 2015-10-30 | 2015-11-02 | $62.61 | $225K | -6.8% | -2.4% | -0.2% |
| MPWR | SELL | 2015-05-14 | 2015-05-18 | $53.30 | $304K | -6.8% | -2.4% | -2.4% |
| MPWR | SELL | 2015-02-24 | 2015-02-25 | $52.50 | $263K | -6.8% | -2.4% | -2.4% |
| MPWR | SELL | 2015-02-13 | 2015-02-17 | $50.25 | $251K | -6.8% | -2.4% | -2.4% |
| MPWR | SELL | 2014-02-14 | 2014-02-18 | $35.09 | $376K | -6.8% | -2.4% | -2.4% |
| MPWR | SELL | 2013-05-29 | 2013-05-31 | $24.43 | $262K | -6.8% | -2.4% | -2.4% |
| MPWR | SELL | 2013-02-28 | 2013-03-04 | $24.75 | $124K | -6.8% | -2.4% | -2.4% |
| MPWR | SELL | 2012-11-29 | 2012-12-03 | $21.11 | $317K | -6.8% | -2.4% | -2.4% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.