Monolithic Power Systems's top three insider shareholders as of May 30, 2026 are Michael Hsing (Ceo, 996.75K shares), Michael Hsing (Ceo, 888.23K shares), Deming Xiao (Pres. Of Mps Asia Operations, 295.05K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Kuo Wei Herbert Chang | - | 615 | 0 | 03 Feb, 2026 |
| Victor K Lee | - | 27,756 | 0 | 11 Feb, 2026 |
| Deming Xiao | Pres. Of Mps Asia Operations | 295,047 | 0 | 05 Apr, 2022 |
| James C Moyer | Chief Ic Design Engineer | 0 | 64,823 | 18 Nov, 2021 |
| Michael Hsing | Ceo | 996,746 | 0 | 15 Nov, 2022 |
| Saria Tseng | Vp General Counsel | 261,383 | 0 | 04 Oct, 2022 |
| Maurice Sciammas | Sr. V.P.Of Sales And Marketing | 269,232 | 0 | 05 Apr, 2022 |
| Theodore Blegen | Cfo | 143,492 | 0 | 04 Feb, 2022 |
| Jeff Zhou | - | 5,800 | 0 | 03 Feb, 2026 |
| Eugen J Elmiger | - | 17,402 | 0 | 03 Feb, 2026 |
| Eileen Wynne | - | 1,342 | 0 | 03 Feb, 2026 |
| Carintia Martinez | - | 1,067 | 0 | 03 Feb, 2026 |
* 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 |
|---|---|---|---|---|---|---|---|---|
| 08 Apr, 2026 | Saria Tseng | Common Stock | D | 560 | $1,266.48 | 165,386 | D | S |
| 08 Apr, 2026 | Saria Tseng | Common Stock | D | 360 | $1,270.29 | 165,026 | D | S |
| 08 Apr, 2026 | Saria Tseng | Common Stock | D | 240 | $1,279.55 | 164,786 | D | S |
| 08 Apr, 2026 | Saria Tseng | Common Stock | D | 120 | $1,287.12 | 164,666 | D | S |
| 08 Apr, 2026 | Saria Tseng | Common Stock | D | 400 | $1,292.08 | 164,266 | D | S |
| 08 Apr, 2026 | Saria Tseng | Common Stock | D | 800 | $1,302.52 | 163,466 | D | S |
| 08 Apr, 2026 | Saria Tseng | Common Stock | D | 1,279 | $1,308.30 | 162,187 | D | S |
| 08 Apr, 2026 | Saria Tseng | Common Stock | D | 4,244 | $1,312.82 | 157,943 | D | S |
| 08 Apr, 2026 | Saria Tseng | Common Stock | D | 840 | $1,319.25 | 157,103 | D | S |
| 08 Apr, 2026 | Saria Tseng | Common Stock | D | 120 | $1,321.94 | 156,983 | D | S |
| 06 Apr, 2026 | Saria Tseng | Common Stock | D | 244 | $1,139.96 | 173,338 | D | S |
| 06 Apr, 2026 | Saria Tseng | Common Stock | D | 556 | $1,144.42 | 172,782 | D | S |
| 06 Apr, 2026 | Saria Tseng | Common Stock | D | 480 | $1,149.05 | 172,302 | D | S |
| 06 Apr, 2026 | Saria Tseng | Common Stock | D | 560 | $1,159.62 | 171,742 | D | S |
| 06 Apr, 2026 | Saria Tseng | Common Stock | D | 684 | $1,165.66 | 171,058 | D | S |
| 06 Apr, 2026 | Saria Tseng | Common Stock | D | 2,036 | $1,170.38 | 169,022 | D | S |
| 06 Apr, 2026 | Saria Tseng | Common Stock | D | 1,680 | $1,176.35 | 167,342 | D | S |
| 06 Apr, 2026 | Saria Tseng | Common Stock | D | 1,396 | $1,179.50 | 165,946 | D | S |
| 01 Apr, 2026 | Saria Tseng | Common Stock | D | 576 | $1,131.24 | 174,406 | D | S |
| 01 Apr, 2026 | Maurice Sciammas | Common Stock | D | 30 | $1,116.44 | 1,239 | I | S |