Michael Hsing, CEO at MONOLITHIC POWER SYSTEMS INC (MPWR), sold 73,600 shares at $957.71 ($70.5M) on 2025-11-11, disclosed to the SEC on 2025-11-13.
Seasonal sale ($70.5M) by CEO — this insider has traded MPWR in November in at least three consecutive prior years. Pattern-driven, low signal.
Nothing distinguishes this filing.
| # | Price | Shares | Value | % of Total |
|---|---|---|---|---|
| 1 | $951.69 | 80 | $76K | 0.1% |
| 2 | $951.69 | 80 | $76K | 0.1% |
| 3 | $952.62 | 1,516 | $1.4M | 2.0% |
| 4 | $952.62 | 1,516 | $1.4M | 2.0% |
| 5 | $953.69 | 2,927 | $2.8M | 4.0% |
| 6 | $953.69 | 2,927 |
| $2.8M |
| 4.0% |
| 7 | $954.61 | 7,934 | $7.6M | 10.7% |
| 8 | $954.61 | 7,934 | $7.6M | 10.7% |
| 9 | $955.46 | 4,056 | $3.9M | 5.5% |
| 10 | $955.46 | 4,056 | $3.9M | 5.5% |
| 11 | $956.50 | 797 | $762K | 1.1% |
| 12 | $956.50 | 797 | $762K | 1.1% |
| 13 | $957.71 | 1,020 | $977K | 1.4% |
| 14 | $957.71 | 1,020 | $977K | 1.4% |
| 15 | $958.59 | 2,500 | $2.4M | 3.4% |
| 16 | $959.45 | 4,010 | $3.8M | 5.5% |
| 17 | $959.45 | 4,010 | $3.8M | 5.5% |
| 18 | $960.45 | 2,734 | $2.6M | 3.7% |
| 19 | $960.45 | 2,734 | $2.6M | 3.7% |
| 20 | $961.47 | 3,900 | $3.7M | 5.3% |
| 21 | $962.57 | 4,172 | $4.0M | 5.7% |
| 22 | $962.57 | 4,172 | $4.0M | 5.7% |
| 23 | $963.41 | 1,894 | $1.8M | 2.6% |
| 24 | $963.41 | 1,894 | $1.8M | 2.6% |
| 25 | $964.38 | 739 | $713K | 1.0% |
| 26 | $964.38 | 739 | $713K | 1.0% |
| 27 | $965.44 | 321 | $310K | 0.4% |
| 28 | $965.44 | 321 | $310K | 0.4% |
| 29 | $966.30 | 1,246 | $1.2M | 1.7% |
| 30 | $966.30 | 1,246 | $1.2M | 1.7% |
| 31 | $967.15 | 154 | $149K | 0.2% |
| 32 | $967.15 | 154 | $149K | 0.2% |
| Total | $958.22 avg | 73,600 | $70.5M | 100% |
| Filing → |
| MPWR | SELL | 2026-02-17 | $38.7M | — | Filing → |
| MPWR | SELL | 2026-02-13 | $39.2M | — | Filing → |
| MPWR | SELL | 2026-02-12 | $38.8M | — | Filing → |