| 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
Chang Kuo Wei Herbert is a Director at MPWR. Recent filings cover 0 purchases and 34 sales. Those positions are worth an estimated $784K at current prices.
Our model assigns Chang Kuo Wei Herbert a below-average insider score of 49/100, based on 13 past trades. Over a 12-month horizon, 50.0% of those trades were profitable, with an average 12-month return of -27.3%.
Chang Kuo Wei Herbert's largest disclosed position is in MPWR as Director, worth about $784K. The recent filings there lean toward selling, a net 15,602 shares.
| Date | Ticker | Role | Type | Shares | Price | Value | Chg% | 3M | 12M | SEC |
|---|---|---|---|---|---|---|---|---|---|---|
| Aug 11, 2026 | MPWR Monolithic Power Systems, Inc. | Director | Sell | 50 | $1,420.00 | $71,000.00 | -8.1% | - | - | |
| Nov 25, 2025 | MPWR Monolithic Power Systems Inc | Director | Sell | 100 | $896.97 | $89,697.00 | -19.0% | +31.0% | - | |
| Nov 21, 2025 | MPWR Monolithic Power Systems Inc | Director | Sell | 100 | $873.97 | $87,397.00 | -16.0% | +34.7% | - | |
| May 13, 2025 | MPWR Monolithic Power Systems Inc | Director | Sell | 50 | $738.00 | $36,900.00 | -7.4% | +8.1% | +123.7% | |
| May 12, 2025 | MPWR Monolithic Power Systems Inc | Director | Sell | 100 | $698.00 | $69,800.00 | -12.9% | +12.4% | +125.5% | |
| May 8, 2025 | MPWR Monolithic Power Systems Inc | Director | Sell | 100 | $650.00 | $65,000.00 | -11.4% | +25.9% | - | |
| Aug 15, 2024 | MPWR Monolithic Power Systems Inc | Director | Sell | 200 | $893.44 | $178,688.00 | -14.5% | -34.7% | -10.2% | |
| May 20, 2024 | MPWR Monolithic Power Systems Inc | Director | Sell | 200 | $750.00 | $150,000.00 | -21.3% | +21.3% | -7.4% | |
| May 15, 2024 | MPWR Monolithic Power Systems Inc | Director | Sell | 200 | $735.00 | $147,000.00 | -9.2% | +17.1% | -4.2% | |
| Feb 29, 2024 | MPWR Monolithic Power Systems Inc | Director | Sell | 250 | $706.34 | $176,585.00 | -18.0% | +3.7% | -15.1% |