Saria Tseng sold $18M of MPWR
EVP & General Counsel at MONOLITHIC POWER SYSTEMS INC. 20,000 shares at an average of $904.18, traded Nov 25, 2025, filed Nov 28, 2025.
Score components
- +15RoleOfficer
- +25Trade size$18.1M at market
- 0Share of holdings soldSold 9.6% of holdings
- +15Cluster5 insiders selling within 14 days
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 +2.0%, 3m +23.3%, 6m +69.4%.
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 0001214659-25-017303, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Nov 25, 2025 | SOpen-market sale Common Stock | -385 | $894.54 | $344k | 206,946 | Nov 28, 2025 |
| Nov 25, 2025 | SOpen-market sale Common Stock | -1,625 | $895.63 | $1.5M | 205,321 | Nov 28, 2025 |
| Nov 25, 2025 | SOpen-market sale Common Stock | -2,066 | $896.37 | $1.9M | 203,255 | Nov 28, 2025 |
| Nov 25, 2025 | SOpen-market sale Common Stock | -754 | $897.54 | $677k | 202,501 | Nov 28, 2025 |
| Nov 25, 2025 | SOpen-market sale Common Stock | -145 | $898.38 | $130k | 202,356 | Nov 28, 2025 |
| Nov 25, 2025 | SOpen-market sale Common Stock | -320 | $899.37 | $288k | 202,036 | Nov 28, 2025 |
| Nov 25, 2025 | SOpen-market sale Common Stock | -346 | $900.41 | $312k | 201,690 | Nov 28, 2025 |
| Nov 25, 2025 | SOpen-market sale Common Stock | -880 | $901.58 | $793k | 200,810 | Nov 28, 2025 |
| Nov 25, 2025 | SOpen-market sale Common Stock | -120 | $902.07 | $108k | 200,690 | Nov 28, 2025 |
| Nov 25, 2025 | SOpen-market sale Common Stock | -160 | $903.54 | $145k | 200,530 | Nov 28, 2025 |
| Nov 25, 2025 | SOpen-market sale Common Stock | -200 | $904.39 | $181k | 200,330 | Nov 28, 2025 |
| Nov 25, 2025 | SOpen-market sale Common Stock | -160 | $905.32 | $145k | 200,170 | Nov 28, 2025 |
| Nov 25, 2025 | SOpen-market sale Common Stock | -272 | $906.33 | $247k | 199,898 | Nov 28, 2025 |
| Nov 25, 2025 | SOpen-market sale Common Stock | -10,200 | $907.21 | $9.3M | 189,698 | Nov 28, 2025 |
| Nov 25, 2025 | SOpen-market sale Common Stock | -888 | $908.49 | $807k | 188,810 | Nov 28, 2025 |
| Nov 25, 2025 | SOpen-market sale Common Stock | -556 | $909.35 | $506k | 188,254 | Nov 28, 2025 |
| Nov 25, 2025 | SOpen-market sale Common Stock | -359 | $910.42 | $327k | 187,895 | Nov 28, 2025 |
| Nov 25, 2025 | SOpen-market sale Common Stock | -324 | $911.92 | $295k | 187,571 | Nov 28, 2025 |
| Nov 25, 2025 | SOpen-market sale Common Stock | -240 | $912.30 | $219k | 187,331 | Nov 28, 2025 |
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.