| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
Director
1 company
Zhou Jeff is a Director at MPWR. Recent filings cover 0 purchases and 41 sales. Those positions are worth an estimated $5.3M at current prices.
Our model assigns Zhou Jeff a middling insider score of 50/100, based on 16 past trades. Over a 12-month horizon, 30.8% of those trades were profitable, with an average 12-month return of -3.3%.
Zhou Jeff's largest disclosed position is in MPWR as Director, worth about $5.3M. The recent filings there lean toward selling, a net 19,642 shares.
| Date | Ticker | Role | Type | Shares | Price | Value | Chg% | 3M | 12M | SEC |
|---|---|---|---|---|---|---|---|---|---|---|
| May 26, 2026 | MPWR Monolithic Power Systems, Inc. | Director | Sell | 486 | $1,680.00 | $816,480.00 | -11.3% | - | - | |
| Aug 27, 2025 | MPWR Monolithic Power Systems Inc | Director | Sell | 193 | $870.00 | $167,910.00 | -3.3% | +4.9% | - | |
| Aug 13, 2025 | MPWR Monolithic Power Systems Inc | Director | Sell | 400 | $850.00 | $340,000.00 | -6.4% | +10.8% | - | |
| Aug 12, 2025 | MPWR Monolithic Power Systems Inc | Director | Sell | 200 | $830.00 | $166,000.00 | -3.1% | +16.1% | - | |
| May 20, 2024 | MPWR Monolithic Power Systems Inc | Director | Sell | 200 | $750.00 | $150,000.00 | -3.2% | +21.3% | -7.4% | |
| Feb 12, 2024 | MPWR Monolithic Power Systems Inc | Director | Sell | 200 | $750.57 | $150,114.00 | -3.1% | -3.7% | -4.2% | |
| Aug 11, 2022 | MPWR Monolithic Power Systems Inc | Director | Sell | 200 | $540.00 | $108,000.00 | -3.4% | -33.5% | -2.9% | |
| Aug 3, 2022 | MPWR Monolithic Power Systems Inc | Director | Sell | 200 | $520.00 | $104,000.00 | -3.3% | -33.6% | +1.4% | |
| Aug 24, 2021 | MPWR Monolithic Power Systems Inc | Director | Sell | 300 | $490.00 | $147,000.00 | -5.2% | +15.1% | +3.0% | |
| Aug 20, 2021 | MPWR Monolithic Power Systems Inc | Director | Sell | 300 | $477.00 | $143,100.00 | -4.9% | +17.9% | +8.1% |