Monolithic Power Systems's three largest insider shareholders as of March 23, 2026 are Michael Hsing (Ceo, 888.23K shares), Deming Xiao (Evp, Global Operations, 235.93K shares), Saria Tseng (Evp General Counsel, 200.63K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Michael Hsing | Ceo | 888,234 | 0 | 17 Feb, 2026 |
| Deming Xiao | Evp, Global Operations | 235,932 | 0 | 10 Feb, 2026 |
| Saria Tseng | Evp General Counsel | 200,626 | 0 | 10 Feb, 2026 |
| Maurice Sciammas | Evp, Ww Sales Marketing | 178,625 | 0 | 10 Feb, 2026 |
| Theodore Blegen | Evp And Cfo | 82,353 | 0 | 10 Feb, 2026 |
| Victor K Lee | 27,756 | 0 | 11 Feb, 2026 | |
| Eugen J Elmiger | 17,402 | 0 | 03 Feb, 2026 | |
| Jeff Zhou | 5,800 | 0 | 03 Feb, 2026 | |
| Theodore Blegen | Cfo | 0 | 5,331 | 11 Aug, 2021 |
| Deming Xiao | Evp, Global Operations | 0 | 4,336 | 11 Aug, 2025 |
| Eileen Wynne | 1,342 | 0 | 03 Feb, 2026 | |
| Maurice Sciammas | Evp, Ww Sales Marketing | 0 | 1,299 | 12 Feb, 2026 |
| Carintia Martinez | 1,067 | 0 | 03 Feb, 2026 | |
| Saria Tseng | Evp General Counsel | 0 | 1,000 | 24 Dec, 2025 |
| James C Moyer | 348 | 0 | 08 Feb, 2024 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 12 Feb, 2026 | Michael Hsing | Common Stock | D | 12,731 | $1,155.71 | 908,503 | D | S |
| 12 Feb, 2026 | Michael Hsing | Common Stock | D | 4,992 | $1,159.84 | 903,511 | D | S |
| 12 Feb, 2026 | Michael Hsing | Common Stock | D | 4,001 | $1,164.92 | 899,510 | D | S |
| 12 Feb, 2026 | Michael Hsing | Common Stock | D | 2,076 | $1,168.80 | 897,434 | D | S |
| 12 Feb, 2026 | Michael Hsing | Common Stock | D | 200 | $1,173.39 | 897,234 | D | S |
| 12 Feb, 2026 | Michael Hsing | Common Stock | D | 480 | $1,180.79 | 896,754 | D | S |
| 12 Feb, 2026 | Michael Hsing | Common Stock | D | 160 | $1,188.23 | 896,594 | D | S |
| 12 Feb, 2026 | Michael Hsing | Common Stock | D | 600 | $1,194.34 | 895,994 | D | S |
| 12 Feb, 2026 | Michael Hsing | Common Stock | D | 1,440 | $1,200.81 | 894,554 | D | S |
| 12 Feb, 2026 | Michael Hsing | Common Stock | D | 3,640 | $1,205.82 | 890,914 | D | S |
| 12 Feb, 2026 | Michael Hsing | Common Stock | D | 1,240 | $1,210.11 | 889,674 | D | S |
| 12 Feb, 2026 | Michael Hsing | Common Stock | D | 1,440 | $1,217.12 | 888,234 | D | S |
| 11 Feb, 2026 | Michael Hsing | Common Stock | D | 363 | $1,158.71 | 953,871 | D | S |
| 11 Feb, 2026 | Michael Hsing | Common Stock | D | 1,366 | $1,163.71 | 952,505 | D | S |
| 11 Feb, 2026 | Michael Hsing | Common Stock | D | 1,533 | $1,167.62 | 950,972 | D | S |
| 11 Feb, 2026 | Michael Hsing | Common Stock | D | 1,987 | $1,172.92 | 948,985 | D | S |
| 11 Feb, 2026 | Michael Hsing | Common Stock | D | 2,799 | $1,177.67 | 946,186 | D | S |
| 11 Feb, 2026 | Michael Hsing | Common Stock | D | 1,542 | $1,182.82 | 944,644 | D | S |
| 11 Feb, 2026 | Michael Hsing | Common Stock | D | 2,104 | $1,188.17 | 942,540 | D | S |
| 11 Feb, 2026 | Michael Hsing | Common Stock | D | 6,079 | $1,192.67 | 936,461 | D | S |