MPWR Stock: Insider Activity, Filings & Research
Drillr aggregates AI research, SEC filings, earnings signals and alt-data for MPWR.
Insider Activity
Over the past 90 days, MPWR insiders executed 76 open-market sales with no offsetting purchases, resulting in net selling of $219.2M and an insider sentiment score of 0/100. Notable transactions included Xiao Deming, EVP of Global Operations, selling $23.4M and $19.2M on 2026-05-08, and Saria Tseng, EVP & General Counsel, selling $12.9M on 2026-05-29. The stock returned 51.3% during this period, and institutional holders have been accumulating positions via 13F filings, contrasting with the sustained insider selling activity.
Updated Jun 4, 2026 · based on SEC Form 4 filings · not investment advice
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| May 29, 2026 | Tseng Sariaofficer: EVP & General Counsel | Sell | 7,565 | $1700.00 |
| May 28, 2026 | DEAN ROBERT W IIofficer: Interim CFO | Sell | 22 | $1649.56 |
| May 27, 2026 | Tseng Sariaofficer: EVP & General Counsel | Sell | 5,000 | $1586.43 |
| May 27, 2026 | Zhou Jeffdirector | Sell | 486 | $1680.00 |
| May 20, 2026 | Hsing Michaeldirector, officer: CEO | Sell | 3,424 | $1462.61 |
| May 20, 2026 | Hsing Michaeldirector, officer: CEO | Sell | 5,819 | $1467.62 |
| May 20, 2026 | Hsing Michaeldirector, officer: CEO | Sell | 352 | $1518.15 |
| May 20, 2026 | Hsing Michaeldirector, officer: CEO | Sell | 5,737 | $1482.51 |
| May 20, 2026 | Hsing Michaeldirector, officer: CEO | Sell | 5,049 | $1472.84 |
| May 20, 2026 | Hsing Michaeldirector, officer: CEO | Sell | 130 | $1521.43 |
| May 20, 2026 | Hsing Michaeldirector, officer: CEO | Sell | 3,769 | $1507.70 |
| May 20, 2026 | DEAN ROBERT W IIofficer: Interim CFO | Sell | 4 | $1563.28 |
| May 20, 2026 | Hsing Michaeldirector, officer: CEO | Sell | 551 | $1513.11 |
| May 20, 2026 | Hsing Michaeldirector, officer: CEO | Sell | 2,929 | $1503.05 |
| May 20, 2026 | Hsing Michaeldirector, officer: CEO | Sell | 608 | $1499.46 |
Source: MPWR SEC Form 4 filings, latest May 29, 2026. For informational purposes only — not investment advice.
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