Theodore Blegen sold $3.1M of MPWR
EVP and CFO at MONOLITHIC POWER SYSTEMS INC. 3,000 shares at an average of $1,024.43, traded Nov 3, 2025, filed Nov 4, 2025.
Score components
- +22RoleCFO
- +25Trade size$3.1M at market
- 0Share of holdings soldSold 3.9% of holdings
- +15Cluster4 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 0001214659-25-015933, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Nov 3, 2025 | SOpen-market sale Common Stock10b5-1 | -204 | $1,013.62 | $207k | 77,128 | Nov 4, 2025 |
| Nov 3, 2025 | SOpen-market sale Common Stock10b5-1 | -135 | $1,014.47 | $137k | 76,993 | Nov 4, 2025 |
| Nov 3, 2025 | SOpen-market sale Common Stock10b5-1 | -80 | $1,016.51 | $81k | 76,913 | Nov 4, 2025 |
| Nov 3, 2025 | SOpen-market sale Common Stock10b5-1 | -6 | $1,017.78 | $6,107 | 76,907 | Nov 4, 2025 |
| Nov 3, 2025 | SOpen-market sale Common Stock10b5-1 | -180 | $1,018.01 | $183k | 76,727 | Nov 4, 2025 |
| Nov 3, 2025 | SOpen-market sale Common Stock10b5-1 | -181 | $1,019.49 | $185k | 76,546 | Nov 4, 2025 |
| Nov 3, 2025 | SOpen-market sale Common Stock10b5-1 | -160 | $1,020.30 | $163k | 76,386 | Nov 4, 2025 |
| Nov 3, 2025 | SOpen-market sale Common Stock10b5-1 | -168 | $1,021.28 | $172k | 76,218 | Nov 4, 2025 |
| Nov 3, 2025 | SOpen-market sale Common Stock10b5-1 | -40 | $1,022.28 | $41k | 76,178 | Nov 4, 2025 |
| Nov 3, 2025 | SOpen-market sale Common Stock10b5-1 | -291 | $1,023.32 | $298k | 75,887 | Nov 4, 2025 |
| Nov 3, 2025 | SOpen-market sale Common Stock10b5-1 | -208 | $1,024.86 | $213k | 75,679 | Nov 4, 2025 |
| Nov 3, 2025 | SOpen-market sale Common Stock10b5-1 | -43 | $1,025.91 | $44k | 75,636 | Nov 4, 2025 |
| Nov 3, 2025 | SOpen-market sale Common Stock10b5-1 | -200 | $1,027.49 | $205k | 75,436 | Nov 4, 2025 |
| Nov 3, 2025 | SOpen-market sale Common Stock10b5-1 | -240 | $1,028.43 | $247k | 75,196 | Nov 4, 2025 |
| Nov 3, 2025 | SOpen-market sale Common Stock10b5-1 | -246 | $1,029.45 | $253k | 74,950 | Nov 4, 2025 |
| Nov 3, 2025 | SOpen-market sale Common Stock10b5-1 | -210 | $1,030.00 | $216k | 74,740 | Nov 4, 2025 |
| Nov 3, 2025 | SOpen-market sale Common Stock10b5-1 | -17 | $1,031.86 | $18k | 74,723 | Nov 4, 2025 |
| Nov 3, 2025 | SOpen-market sale Common Stock10b5-1 | -184 | $1,032.07 | $190k | 74,539 | Nov 4, 2025 |
| Nov 3, 2025 | SOpen-market sale Common Stock10b5-1 | -80 | $1,033.00 | $83k | 74,459 | Nov 4, 2025 |
| Nov 3, 2025 | SOpen-market sale Common Stock10b5-1 | -40 | $1,034.99 | $41k | 74,419 | Nov 4, 2025 |
| Nov 3, 2025 | SOpen-market sale Common Stock10b5-1 | -40 | $1,035.25 | $41k | 74,379 | Nov 4, 2025 |
| Nov 3, 2025 | SOpen-market sale Common Stock10b5-1 | -47 | $1,038.41 | $49k | 74,332 | Nov 4, 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% | |
| 1Weak | MONOLITHIC POWER SYSTEMS INC | Maurice Sciammas EVP, WW Sales & Marketing | $33k 30 shares | -2% | |
| 45Moderate | MONOLITHIC POWER SYSTEMS INC | Michael Hsing CEO | $39M 33,000 shares | -4% | |
| 45Moderate | MONOLITHIC POWER SYSTEMS INC | Michael Hsing CEO | $39M 33,000 shares | -3% | |
| 45Moderate | MONOLITHIC POWER SYSTEMS INC | Michael Hsing CEO | $39M 34,000 shares | -3% | |
| 48Moderate | MONOLITHIC POWER SYSTEMS INC | Maurice Sciammas EVP, WW Sales & Marketing | $236k 200 shares | -13% | |
| 28Weak | MONOLITHIC POWER SYSTEMS INC | Victor K Lee director | $485k 400 shares | -1% | |
| 67Notable | MONOLITHIC POWER SYSTEMS INC | Theodore Blegen EVP and CFO | $25M 21,725 shares | -21% | |
| 65Notable | MONOLITHIC POWER SYSTEMS INC | Michael Hsing CEO | $64M 54,923 shares | -5% | |
| 60Notable | MONOLITHIC POWER SYSTEMS INC | Maurice Sciammas EVP, WW Sales & Marketing | $27M 22,875 shares | -11% |
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.