Michael Hsing sold $39M of MPWR
CEO at MONOLITHIC POWER SYSTEMS INC. 33,000 shares at an average of $1,188.92, traded Feb 11, 2026, filed Feb 13, 2026.
Score components
- +25RoleCEO
- +25Trade size$39.2M at market
- 0Share of holdings soldSold 3.5% of holdings
- +15Cluster6 insiders selling within 14 days
- -2010b5-1 planPre-scheduled under a 10b5-1 plan
What happened after comparable sells
Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.
This signal so far: 1m -10.1%, 3m +32.6%, 6m +20.1%.
Price around the trade, and since
From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™
Rows in this filing
Every transaction in Form 4 0001214659-26-001738, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Feb 11, 2026 | SOpen-market sale Common Stock10b5-1 | -363 | $1,158.71 | $421k | 953,871 | Feb 13, 2026 |
| Feb 11, 2026 | SOpen-market sale Common Stock10b5-1 | -1,366 | $1,163.71 | $1.6M | 952,505 | Feb 13, 2026 |
| Feb 11, 2026 | SOpen-market sale Common Stock10b5-1 | -1,533 | $1,167.62 | $1.8M | 950,972 | Feb 13, 2026 |
| Feb 11, 2026 | SOpen-market sale Common Stock10b5-1 | -1,987 | $1,172.92 | $2.3M | 948,985 | Feb 13, 2026 |
| Feb 11, 2026 | SOpen-market sale Common Stock10b5-1 | -2,799 | $1,177.67 | $3.3M | 946,186 | Feb 13, 2026 |
| Feb 11, 2026 | SOpen-market sale Common Stock10b5-1 | -1,542 | $1,182.82 | $1.8M | 944,644 | Feb 13, 2026 |
| Feb 11, 2026 | SOpen-market sale Common Stock10b5-1 | -2,104 | $1,188.17 | $2.5M | 942,540 | Feb 13, 2026 |
| Feb 11, 2026 | SOpen-market sale Common Stock10b5-1 | -6,079 | $1,192.67 | $7.3M | 936,461 | Feb 13, 2026 |
| Feb 11, 2026 | SOpen-market sale Common Stock10b5-1 | -14,578 | $1,197.20 | $17M | 921,883 | Feb 13, 2026 |
| Feb 11, 2026 | SOpen-market sale Common Stock10b5-1 | -649 | $1,202.28 | $780k | 921,234 | Feb 13, 2026 |
Related signals
Other insiders at MONOLITHIC POWER SYSTEMS INC and this insider’s other filings.
| Score | Company | Insider | Value | Holdings | Filed |
|---|---|---|---|---|---|
| 30Weak | MONOLITHIC POWER SYSTEMS INC | Michael Hsing CEO | $40M 30,000 shares | -4% | |
| 36Weak | MONOLITHIC POWER SYSTEMS INC | Robert W Dean II Interim CFO | $42k 32 shares | -0% | |
| 31Weak | MONOLITHIC POWER SYSTEMS INC | Kuo Wei Herbert Chang director | $64k 50 shares | -9% | |
| 37Weak | MONOLITHIC POWER SYSTEMS INC | Robert W Dean II Interim CFO | $8,482 6 shares | -0% | |
| 38Weak | MONOLITHIC POWER SYSTEMS INC | Kuo Wei Herbert Chang director | $71k 50 shares | -8% | |
| 48Moderate | MONOLITHIC POWER SYSTEMS INC | Robert W Dean II Interim CFO | $141k 105 shares | -1% | |
| 16Weak | MONOLITHIC POWER SYSTEMS INC | Maurice Sciammas EVP, WW Sales & Marketing | $40k 30 shares | -3% | |
| 20Weak | MONOLITHIC POWER SYSTEMS INC | Maurice Sciammas EVP, WW Sales & Marketing | $20M 15,000 shares | -9% | |
| 1Weak | MONOLITHIC POWER SYSTEMS INC | Maurice Sciammas EVP, WW Sales & Marketing | $41k 30 shares | -3% | |
| 16Weak | MONOLITHIC POWER SYSTEMS INC | Maurice Sciammas EVP, WW Sales & Marketing | $46k 30 shares | -2% |
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.