Theodore Blegen sold $2.7M of MPWR
EVP and CFO at MONOLITHIC POWER SYSTEMS INC. 3,000 shares at an average of $913.22, traded Oct 1, 2025, filed Oct 1, 2025.
Score components
- +22RoleCFO
- +25Trade size$2.7M at market
- 0Share of holdings soldSold 7.3% of holdings
- +15Cluster3 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 +9.7%, 3m -0.9%, 6m +22.7%.
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 0001214659-25-014464, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Oct 1, 2025 | SOpen-market sale Common Stock10b5-1 | -6 | $902.61 | $5,416 | 40,933 | Oct 1, 2025 |
| Oct 1, 2025 | SOpen-market sale Common Stock10b5-1 | -40 | $903.82 | $36k | 40,893 | Oct 1, 2025 |
| Oct 1, 2025 | SOpen-market sale Common Stock10b5-1 | -60 | $904.00 | $54k | 40,833 | Oct 1, 2025 |
| Oct 1, 2025 | SOpen-market sale Common Stock10b5-1 | -115 | $905.37 | $104k | 40,718 | Oct 1, 2025 |
| Oct 1, 2025 | SOpen-market sale Common Stock10b5-1 | -250 | $907.36 | $227k | 40,468 | Oct 1, 2025 |
| Oct 1, 2025 | SOpen-market sale Common Stock10b5-1 | -80 | $909.52 | $73k | 40,388 | Oct 1, 2025 |
| Oct 1, 2025 | SOpen-market sale Common Stock10b5-1 | -65 | $911.27 | $59k | 40,323 | Oct 1, 2025 |
| Oct 1, 2025 | SOpen-market sale Common Stock10b5-1 | -676 | $912.73 | $617k | 39,647 | Oct 1, 2025 |
| Oct 1, 2025 | SOpen-market sale Common Stock10b5-1 | -138 | $913.87 | $126k | 39,509 | Oct 1, 2025 |
| Oct 1, 2025 | SOpen-market sale Common Stock10b5-1 | -390 | $914.71 | $357k | 39,119 | Oct 1, 2025 |
| Oct 1, 2025 | SOpen-market sale Common Stock10b5-1 | -440 | $915.43 | $403k | 38,679 | Oct 1, 2025 |
| Oct 1, 2025 | SOpen-market sale Common Stock10b5-1 | -580 | $916.37 | $531k | 38,099 | Oct 1, 2025 |
| Oct 1, 2025 | SOpen-market sale Common Stock10b5-1 | -160 | $917.17 | $147k | 37,940 | Oct 1, 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.