Theodore Blegen sold $2.4M of MPWR
EVP and CFO at MONOLITHIC POWER SYSTEMS INC. 3,000 shares at an average of $814.34, traded Sep 2, 2025, filed Sep 3, 2025.
Score components
- +22RoleCFO
- +25Trade size$2.4M at market
- 0Share of holdings soldSold 6.8% 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.
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 0001214659-25-013303, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Sep 2, 2025 | SOpen-market sale Common Stock10b5-1 | -100 | $803.43 | $80k | 43,839 | Sep 3, 2025 |
| Sep 2, 2025 | SOpen-market sale Common Stock10b5-1 | -100 | $804.64 | $80k | 43,739 | Sep 3, 2025 |
| Sep 2, 2025 | SOpen-market sale Common Stock10b5-1 | -200 | $806.57 | $161k | 43,539 | Sep 3, 2025 |
| Sep 2, 2025 | SOpen-market sale Common Stock10b5-1 | -100 | $808.53 | $81k | 43,439 | Sep 3, 2025 |
| Sep 2, 2025 | SOpen-market sale Common Stock10b5-1 | -500 | $811.45 | $406k | 42,939 | Sep 3, 2025 |
| Sep 2, 2025 | SOpen-market sale Common Stock10b5-1 | -100 | $812.84 | $81k | 42,839 | Sep 3, 2025 |
| Sep 2, 2025 | SOpen-market sale Common Stock10b5-1 | -100 | $813.09 | $81k | 42,739 | Sep 3, 2025 |
| Sep 2, 2025 | SOpen-market sale Common Stock10b5-1 | -200 | $814.75 | $163k | 42,539 | Sep 3, 2025 |
| Sep 2, 2025 | SOpen-market sale Common Stock10b5-1 | -400 | $815.39 | $326k | 42,139 | Sep 3, 2025 |
| Sep 2, 2025 | SOpen-market sale Common Stock10b5-1 | -574 | $816.47 | $469k | 41,565 | Sep 3, 2025 |
| Sep 2, 2025 | SOpen-market sale Common Stock10b5-1 | -100 | $818.44 | $82k | 41,465 | Sep 3, 2025 |
| Sep 2, 2025 | SOpen-market sale Common Stock10b5-1 | -200 | $820.70 | $164k | 41,265 | Sep 3, 2025 |
| Sep 2, 2025 | SOpen-market sale Common Stock10b5-1 | -200 | $821.75 | $164k | 41,065 | Sep 3, 2025 |
| Sep 2, 2025 | SOpen-market sale Common Stock10b5-1 | -126 | $822.59 | $104k | 40,939 | Sep 3, 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% | |
| 19Weak | MONOLITHIC POWER SYSTEMS INC | Victor K Lee director | $952k 1,000 shares | -3% | |
| 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% | |
| 60Notable | MONOLITHIC POWER SYSTEMS INC | Saria Tseng EVP & General Counsel | $19M 20,000 shares | -11% | |
| 44Moderate | MONOLITHIC POWER SYSTEMS INC | Kuo Wei Herbert Chang director | $90k 100 shares | -19% | |
| 55Moderate | MONOLITHIC POWER SYSTEMS INC | Maurice Sciammas EVP, WW Sales & Marketing | $3.6M 3,976 shares | -3% | |
| 44Moderate | MONOLITHIC POWER SYSTEMS INC | Kuo Wei Herbert Chang director | $87k 100 shares | -16% | |
| 55Moderate | MONOLITHIC POWER SYSTEMS INC | Maurice Sciammas EVP, WW Sales & Marketing | $6.1M 7,034 shares | -4% | |
| 60Notable | MONOLITHIC POWER SYSTEMS INC | Maurice Sciammas EVP, WW Sales & Marketing | $25M 27,966 shares | -16% |
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.