Victor K Lee sold $952k of MPWR
director at MONOLITHIC POWER SYSTEMS INC. 1,000 shares at an average of $951.72, traded Dec 24, 2025, filed Dec 29, 2025.
Score components
- +15RoleDirector
- +24Trade size$952k at market
- 0Share of holdings soldSold 3.4% of holdings
- +8Cluster2 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.
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 0001214659-25-018478, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Dec 24, 2025 | SOpen-market sale Common Stock10b5-1 | -197 | $949.70 | $187k | 29,370 | Dec 29, 2025 |
| Dec 24, 2025 | SOpen-market sale Common Stock10b5-1 | -280 | $950.64 | $266k | 29,090 | Dec 29, 2025 |
| Dec 24, 2025 | SOpen-market sale Common Stock10b5-1 | -160 | $951.60 | $152k | 28,930 | Dec 29, 2025 |
| Dec 24, 2025 | SOpen-market sale Common Stock10b5-1 | -83 | $952.37 | $79k | 28,847 | Dec 29, 2025 |
| Dec 24, 2025 | SOpen-market sale Common Stock10b5-1 | -200 | $953.70 | $191k | 28,647 | Dec 29, 2025 |
| Dec 24, 2025 | SOpen-market sale Common Stock10b5-1 | -80 | $955.08 | $76k | 28,567 | Dec 29, 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% | |
| 38Weak | MONOLITHIC POWER SYSTEMS INC | Michael Hsing CEO | $39M 33,000 shares | -4% | |
| 38Weak | MONOLITHIC POWER SYSTEMS INC | Michael Hsing CEO | $39M 33,000 shares | -3% | |
| 38Weak | MONOLITHIC POWER SYSTEMS INC | Michael Hsing CEO | $39M 34,000 shares | -3% | |
| 60Notable | MONOLITHIC POWER SYSTEMS INC | Theodore Blegen EVP and CFO | $25M 21,725 shares | -21% | |
| 58Moderate | MONOLITHIC POWER SYSTEMS INC | Michael Hsing CEO | $64M 54,923 shares | -5% | |
| 35Weak | MONOLITHIC POWER SYSTEMS INC | Theodore Blegen EVP and CFO | $3.4M 3,000 shares | -4% | |
| 35Weak | MONOLITHIC POWER SYSTEMS INC | Theodore Blegen EVP and CFO | $2.8M 3,000 shares | -4% | |
| 42Moderate | MONOLITHIC POWER SYSTEMS INC | Theodore Blegen EVP and CFO | $2.7M 3,000 shares | -4% | |
| 55Moderate | MONOLITHIC POWER SYSTEMS INC | Saria Tseng EVP & General Counsel | $18M 20,000 shares | -10% |
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.