Maurice Sciammas sold $20M of MPWR
EVP, WW Sales & Marketing at MONOLITHIC POWER SYSTEMS INC. 15,000 shares at an average of $1,349.73, traded Jul 15, 2026, filed Jul 17, 2026.
Score components
- +15RoleOfficer
- +25Trade size$20.2M at market
- 0Share of holdings soldSold 9.0% of holdings
- 0ClusterNo other insider 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.
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 0001214659-26-008703, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Jul 15, 2026 | SOpen-market sale Common Stock10b5-1 | -527 | $1,314.03 | $692k | 166,117 | Jul 17, 2026 |
| Jul 15, 2026 | SOpen-market sale Common Stock10b5-1 | -274 | $1,318.42 | $361k | 165,843 | Jul 17, 2026 |
| Jul 15, 2026 | SOpen-market sale Common Stock10b5-1 | -409 | $1,323.93 | $541k | 165,434 | Jul 17, 2026 |
| Jul 15, 2026 | SOpen-market sale Common Stock10b5-1 | -464 | $1,329.30 | $617k | 164,970 | Jul 17, 2026 |
| Jul 15, 2026 | SOpen-market sale Common Stock10b5-1 | -776 | $1,334.59 | $1.0M | 164,194 | Jul 17, 2026 |
| Jul 15, 2026 | SOpen-market sale Common Stock10b5-1 | -1,460 | $1,339.59 | $2.0M | 162,734 | Jul 17, 2026 |
| Jul 15, 2026 | SOpen-market sale Common Stock10b5-1 | -1,864 | $1,344.16 | $2.5M | 160,870 | Jul 17, 2026 |
| Jul 15, 2026 | SOpen-market sale Common Stock10b5-1 | -1,506 | $1,348.91 | $2.0M | 159,364 | Jul 17, 2026 |
| Jul 15, 2026 | SOpen-market sale Common Stock10b5-1 | -5,640 | $1,352.95 | $7.6M | 153,724 | Jul 17, 2026 |
| Jul 15, 2026 | SOpen-market sale Common Stock10b5-1 | -50 | $1,359.36 | $68k | 153,674 | Jul 17, 2026 |
| Jul 15, 2026 | SOpen-market sale Common Stock10b5-1 | -240 | $1,369.18 | $329k | 153,434 | Jul 17, 2026 |
| Jul 15, 2026 | SOpen-market sale Common Stock10b5-1 | -472 | $1,375.47 | $649k | 152,962 | Jul 17, 2026 |
| Jul 15, 2026 | SOpen-market sale Common Stock10b5-1 | -418 | $1,378.73 | $576k | 152,544 | Jul 17, 2026 |
| Jul 15, 2026 | SOpen-market sale Common Stock10b5-1 | -410 | $1,384.11 | $567k | 152,134 | Jul 17, 2026 |
| Jul 15, 2026 | SOpen-market sale Common Stock10b5-1 | -50 | $1,388.19 | $69k | 152,084 | Jul 17, 2026 |
| Jul 15, 2026 | SOpen-market sale Common Stock10b5-1 | -213 | $1,396.16 | $297k | 151,871 | Jul 17, 2026 |
| Jul 15, 2026 | SOpen-market sale Common Stock10b5-1 | -117 | $1,400.45 | $164k | 151,754 | Jul 17, 2026 |
| Jul 15, 2026 | SOpen-market sale Common Stock10b5-1 | -110 | $1,405.71 | $155k | 151,644 | Jul 17, 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% | |
| 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% | |
| 55Moderate | MONOLITHIC POWER SYSTEMS INC | Saria Tseng EVP & General Counsel | $13M 7,565 shares | -5% |
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.