Theodore Blegen sold $3.4M of MPWR
EVP and CFO at MONOLITHIC POWER SYSTEMS INC. 3,000 shares at an average of $1,129.76, traded Feb 2, 2026, filed Feb 4, 2026.
Score components
- +22RoleCFO
- +25Trade size$3.4M at market
- 0Share of holdings soldSold 4.4% of holdings
- 0ClusterNo other insider 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 0001214659-26-001149, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Feb 2, 2026 | SOpen-market sale Common Stock10b5-1 | -220 | $1,110.58 | $244k | 68,112 | Feb 4, 2026 |
| Feb 2, 2026 | SOpen-market sale Common Stock10b5-1 | -40 | $1,117.11 | $45k | 68,072 | Feb 4, 2026 |
| Feb 2, 2026 | SOpen-market sale Common Stock10b5-1 | -80 | $1,120.77 | $90k | 67,992 | Feb 4, 2026 |
| Feb 2, 2026 | SOpen-market sale Common Stock10b5-1 | -40 | $1,122.56 | $45k | 67,952 | Feb 4, 2026 |
| Feb 2, 2026 | SOpen-market sale Common Stock10b5-1 | -200 | $1,126.58 | $225k | 67,752 | Feb 4, 2026 |
| Feb 2, 2026 | SOpen-market sale Common Stock10b5-1 | -80 | $1,127.39 | $90k | 67,672 | Feb 4, 2026 |
| Feb 2, 2026 | SOpen-market sale Common Stock10b5-1 | -240 | $1,128.43 | $271k | 67,432 | Feb 4, 2026 |
| Feb 2, 2026 | SOpen-market sale Common Stock10b5-1 | -240 | $1,129.28 | $271k | 67,192 | Feb 4, 2026 |
| Feb 2, 2026 | SOpen-market sale Common Stock10b5-1 | -320 | $1,130.48 | $362k | 66,872 | Feb 4, 2026 |
| Feb 2, 2026 | SOpen-market sale Common Stock10b5-1 | -198 | $1,131.70 | $224k | 66,674 | Feb 4, 2026 |
| Feb 2, 2026 | SOpen-market sale Common Stock10b5-1 | -322 | $1,132.67 | $365k | 66,352 | Feb 4, 2026 |
| Feb 2, 2026 | SOpen-market sale Common Stock10b5-1 | -379 | $1,133.47 | $430k | 65,973 | Feb 4, 2026 |
| Feb 2, 2026 | SOpen-market sale Common Stock10b5-1 | -241 | $1,134.41 | $273k | 65,732 | Feb 4, 2026 |
| Feb 2, 2026 | SOpen-market sale Common Stock10b5-1 | -120 | $1,135.49 | $136k | 65,612 | Feb 4, 2026 |
| Feb 2, 2026 | SOpen-market sale Common Stock10b5-1 | -120 | $1,136.35 | $136k | 65,492 | Feb 4, 2026 |
| Feb 2, 2026 | SOpen-market sale Common Stock10b5-1 | -80 | $1,137.81 | $91k | 65,412 | Feb 4, 2026 |
| Feb 2, 2026 | SOpen-market sale Common Stock10b5-1 | -80 | $1,139.49 | $91k | 65,333 | Feb 4, 2026 |
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% | |
| 52Moderate | MPWRsell MONOLITHIC POWER SYSTEMS INC | Theodore Blegen EVP and CFO | $25M 21,725 shares | -21% | |
| 35Weak | MONOLITHIC POWER SYSTEMS INC | Theodore Blegen EVP and CFO | $2.8M 3,000 shares | -4% | |
| 27Weak | 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% |
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.