MONOLITHIC POWER SYSTEMS, INC.
MPWRReported to SECin USCIK 0001280452Filings at SEC EDGAR
No score on this page, by design. Everything here is a fact from a public U.S. register: insider filings at the SEC (Form 4), lobbying filings under the Lobbying Disclosure Act, trades reported by members of Congress under the STOCK Act, and fund holdings in 13F filings. Our scores, percentiles and signals run on the Dutch register only, because that is the only register the model has been validated on.
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The most recent filings
Most recent filing first: every line of every Form 4 at this company that passed our review, the same lines as on the register. Reported is the day the filing reached the SEC, usually within two business days of the trade. Amounts are in U.S. dollars, as the form states them.
| Filed by | Type | Value | Reported | Filed by | Value | Type | Shares | Reported |
|---|---|---|---|---|---|---|---|---|
| Hsing MichaelCEO | Open-market sell | $176,402130 shares | Sep 30, 2026 | Hsing MichaelCEO | $176,402 | Open-market sell | 130 | Sep 30, 2026 |
| Hsing MichaelCEO | Open-market sell | $14,821,13310,967 shares | Sep 30, 2026 | Hsing MichaelCEO | $14,821,133 | Open-market sell | 10,967 | Sep 30, 2026 |
| Hsing MichaelCEO | Open-market sell | $8,544,9726,343 shares | Sep 30, 2026 | Hsing MichaelCEO | $8,544,972 | Open-market sell | 6,343 | Sep 30, 2026 |
| Hsing MichaelCEO | Open-market sell | $7,770,9645,783 shares | Sep 30, 2026 | Hsing MichaelCEO | $7,770,964 | Open-market sell | 5,783 | Sep 30, 2026 |
| Hsing MichaelCEO | Open-market sell | $3,947,7082,949 shares | Sep 30, 2026 | Hsing MichaelCEO | $3,947,708 | Open-market sell | 2,949 | Sep 30, 2026 |