Monolithic Power Systems Inc (MPWR) Insider Ownership

Historic Insider Ownership Trends

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).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
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.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
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