MPWR · Monolithic Power Systems, Inc.
$1,402.01
+39.46 (+2.90%)
At close · Aug 14
Market Cap
$70.03B
Shares
49.14M
Notices of intent to sell restricted or control shares, filed with the SEC on Form 144 by insiders and affiliates. A Form 144 signals a planned sale — it does not confirm the shares were actually sold.
| Filed | Seller | Relationship | Shares | Approx. Sale | Broker |
|---|---|---|---|---|---|
| 2026-08-11 | Kuo Wei Chang | Director | 100 | 2026-08-11 | UBS Financial Services Inc |
| 2026-08-05 | ROBERT DEAN | Officer | 105 | 2026-08-05 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-07-15 | MAURICE SCIAMMAS | Officer | 15,000 | 2026-07-15 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-06-01 | THEODORE BERNHARD BLEGEN | Officer | 3,001 | 2026-06-01 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-05-28 | SARIA TSENG | Officer | 7,565 | 2026-05-27 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-05-26 | JEFF ZHOU | Director | 486 | 2026-05-26 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-05-26 | DEAN ROBERT W II | Officer | 22 | 2026-05-26 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-05-22 | SARIA TSENG | Officer | 5,000 | 2026-05-22 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-05-18 | MICHAEL HSING | Officer, Director | 40,000 | 2026-05-18 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-05-18 | DEAN ROBERT W II | Officer | 4 | 2026-05-18 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-05-15 | MAURICE SCIAMMAS | Officer | 12,000 | 2026-05-15 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-05-06 | JEFF ZHOU | Director | 500 | 2026-05-06 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-05-06 | Elmiger Eugen J | Director | 12,000 | 2026-05-07 | Luzerner Kantonalbank AG |
| 2026-05-06 | EILEEN WYNNE | Director | 335 | 2026-05-06 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-05-06 | DEMING XIAO | Officer | 30,000 | 2026-05-06 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-05-05 | JEFF ZHOU | Director | 1,014 | 2026-05-05 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-05-05 | Rosalind Sciammas | Member of immediate family of any of the foregoing | 400 | 2026-05-05 | UBS Financial Services Inc |
| 2026-05-01 | THEODORE BERNHARD BLEGEN | Officer | 3,000 | 2026-05-01 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-04-08 | SARIA TSENG | Officer | 8,964 | 2026-04-08 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-04-06 | SARIA TSENG | Officer | 7,636 | 2026-04-06 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-04-01 | THEODORE BERNHARD BLEGEN | Officer | 3,000 | 2026-04-01 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-04-01 | SARIA TSENG | Officer | 1,400 | 2026-04-01 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-03-30 | SARIA TSENG | Officer | 25,674 | 2026-03-30 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-03-20 | Sciammas Maurice | Officer | 120 | 2026-03-20 | UBS Financial Services, Inc. |
| 2026-03-02 | THEODORE BERNHARD BLEGEN | Officer | 3,000 | 2026-03-02 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-02-12 | MICHAEL HSING | Officer, Director | 33,000 | 2026-02-12 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-02-11 | MICHAEL HSING | Officer, Director | 33,000 | 2026-02-11 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-02-10 | The Sciammas Trust DTD 06/08/2018 | Member of immediate family of any of the foregoing | 200 | 2026-02-10 | UBS Financial Services Inc |
| 2026-02-10 | MICHAEL HSING | Officer, Director | 34,000 | 2026-02-10 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-02-06 | BLEGEN THEODORE | Officer | 995 | 2026-02-06 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-02-06 | Tseng Saria | Officer | 1,286 | 2026-02-06 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-02-06 | Hsing Michael | Officer, Director | 3,082 | 2026-02-06 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-02-06 | Sciammas Maurice | Officer | 1,286 | 2026-02-06 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-02-06 | Xiao Deming | Officer | 1,286 | 2026-02-06 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-02-04 | BLEGEN THEODORE | Officer | 20,730 | 2026-02-04 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-02-04 | Xiao Deming | Officer | 21,590 | 2026-02-04 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-02-04 | Sciammas Maurice | Officer | 21,590 | 2026-02-04 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-02-04 | Tseng Saria | Officer | 21,590 | 2026-02-04 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-02-04 | Hsing Michael | Officer, Director | 51,841 | 2026-02-04 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-02-02 | THEODORE BERNHARD BLEGEN | Officer | 3,000 | 2026-02-02 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-01-02 | THEODORE BERNHARD BLEGEN | Officer | 3,000 | 2026-01-02 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-12-29 | VICTOR LEE | Director | 2,000 | 2025-12-24 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-12-01 | BERNIE BLEGEN | Officer | 3,000 | 2025-12-01 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-11-26 | SARIA TSENG | Officer | 20,000 | 2025-11-26 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-11-25 | SARIA TSENG | Officer | 20,000 | 2025-11-25 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-11-24 | MAURICE SCIAMMAS | Officer | 3,976 | 2025-11-24 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-11-21 | Kuo Wei Chang | Director | 200 | 2025-11-21 | UBS Financial Services Inc |
| 2025-11-19 | MAURICE SCIAMMAS | Officer | 35,000 | 2025-11-19 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-11-12 | Michael Hsing | Officer, Director | 30,000 | 2025-11-12 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-11-12 | Michael Hsing | Officer, Director | 40,000 | 2025-11-11 | Morgan Stanley Smith Barney LLC Executive Financial Services |
Showing 1–50 of 220 filings
Key facts
CIK
1280452
CUSIP
609839105
13F (30d)
1141 filings
1110 filers
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